Archived
3637 lines
166 KiB
TypeScript
3637 lines
166 KiB
TypeScript
import { statSync } from "node:fs";
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import { join } from "node:path";
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import { open, readFile, writeFile } from "node:fs/promises";
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import type { ImageContent } from "@earendil-works/pi-ai";
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import type { StreamFn } from "@earendil-works/pi-agent-core";
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import {
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createAgentSessionFromServices,
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createAgentSessionRuntime,
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createAgentSessionServices,
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createEditToolDefinition,
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defineTool,
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readStoredCredential,
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SessionManager,
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type AgentSessionRuntimeDiagnostic,
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type AgentSessionServices,
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type CreateAgentSessionRuntimeFactory,
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type EditToolDetails,
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type ExtensionUIContext,
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type ModelRuntime,
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type ResourceDiagnostic,
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} from "@earendil-works/pi-coding-agent";
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import type { ClientArchiveSessionsResponse, ClientCommand, ClientCommandResult, ClientMessagePage, ClientSession, ClientSessionCleanupExecuteResponse, ClientSessionCleanupPreviewResponse, ClientSessionModel, ClientSessionStatus, ClientSessionTreeNavigateRequest, ClientSessionTreeNavigateResult, ClientThinkingLevel, SessionStreamSnapshot, SessionUiEvent } from "../types.js";
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import { projectBrowserMessage } from "../browserMessageProjection.js";
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import { pageMessagesAtSafeBoundary } from "./messagePaging.js";
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import type { SessionEventHub } from "../realtime/sessionEventHub.js";
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import { BUILTIN_COMMANDS } from "./builtinCommands.js";
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import { SessionCommandService } from "./sessionCommandService.js";
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import { projectSessionTree, type ProjectableSessionTreeNode } from "./sessionTreeProjection.js";
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import { SessionArchiveStore, type ArchivedSessionRecord, type ArchiveSessionInput } from "./sessionArchiveStore.js";
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import { findArchiveCandidateByIdOrPrefix, planSessionArchiveTree, type SessionArchiveTreeCandidate } from "./sessionArchiveTree.js";
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import type { ActiveSession } from "./sessionRuntimeStore.js";
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import { deterministicSessionName, fallbackSessionName, generateShortSessionName } from "./sessionNameGenerator.js";
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import { computeEditPreview, type EditPreviewResult } from "./editPreview.js";
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import { attachmentsToInlineImages, saveAttachmentsToWorkspace } from "./attachmentService.js";
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import { parsePromptAttachments } from "../../shared/promptAttachments.js";
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import { SESSION_TREE_CUSTOM_INSTRUCTIONS_MAX_LENGTH, SESSION_UNREAD_LIMIT } from "../../shared/apiTypes.js";
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import type {
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SavedPromptAttachment,
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SessionBulkArchiveResponse,
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SessionBulkDeleteArchivedResponse,
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SessionBulkFailure,
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SessionBulkMutationRef,
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SessionNotificationCatalogSnapshot,
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SessionNotificationClearReason,
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SessionNotificationDismissAllRequest,
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SessionNotificationDismissRequest,
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SessionNotificationInboxSnapshot,
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SessionUnreadAcknowledgeRequest,
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SessionUnreadCatalogSnapshot,
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SessionWarning,
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} from "../../shared/apiTypes.js";
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import type { SessionRouteLookup, SessionRouteRef, SessionRouteService } from "./sessionService.js";
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import { type AuthChange } from "./authService.js";
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import { canonicalizeStoredCwd, cwdPathsEqual } from "../workingDirectory.js";
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import type { WorkspaceActivityService } from "../activity/workspaceActivityService.js";
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import { createSpawnSessionToolDefinition, type SpawnSessionInvocation, type SpawnSessionResult } from "./spawnSessionTool.js";
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import { createSubsessionToolDefinitions, type SpawnSubsessionInvocation, type SpawnSubsessionResult, type SubsessionCheckResult, type SubsessionReadQuery, type SubsessionReadResult, type SubsessionStatus, type SubsessionSummary, type SubsessionToolDeps } from "./spawnSubsessionTool.js";
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import { buildTranscriptView } from "./subsessionTranscript.js";
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import { planSessionCleanup, summarizeSessionCleanupExecution, type NormalizedSessionCleanupRequest, type SessionCleanupPlan } from "./sessionCleanup.js";
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import type { SpawnTargetDecision, SpawnTargetResolver } from "./spawnTargetResolver.js";
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import {
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SessionNotificationStore,
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type SessionNotificationGeneration,
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type SessionNotificationMutation,
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} from "./sessionNotificationStore.js";
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import { plainTextTheme } from "./plainTextTheme.js";
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import { SessionUnreadStore, type SessionUnreadMutation } from "./sessionUnreadStore.js";
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/**
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* Minimal structured-logging seam, shaped like Fastify's logger so sessiond can
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* pass `app.log` directly. Defaults to a no-op so the service stays usable
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* without booting a server (e.g. in tests).
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*/
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export interface PiSessionLogger {
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info(details: Record<string, unknown>, message: string): void;
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}
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const noopLogger: PiSessionLogger = { info() { /* no-op */ } };
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const DEFAULT_UNREAD_PUBLICATION_RETRY_MS = 1_000;
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const MAX_UNREAD_PUBLICATION_RETRY_MS = 30_000;
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const MAX_PENDING_UNREAD_MUTATIONS = SESSION_UNREAD_LIMIT + 1;
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function noop(): void {
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// Intentionally empty default unsubscribe callback.
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}
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function spawnTargetError(decision: Extract<SpawnTargetDecision, { allowed: false }>): Error {
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if (decision.reason === "not-registered") return new Error("Spawning session is not in a registered project");
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return new Error(`cwd must be a workspace of this project. Allowed: ${decision.allowedCwds.join(", ")}`);
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}
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function authLossWarningKey(sessionId: string, provider: string, modelId: string): string {
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return `${sessionId}:${provider}/${modelId}`;
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}
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function sessionIdFromLookup(ref: PiSessionLookup): string {
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return typeof ref === "string" ? ref : ref.id;
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}
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function isPiSessionRef(ref: PiSessionLookup): ref is PiSessionRef {
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return typeof ref !== "string";
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}
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function lookupMatchesActiveSession(ref: PiSessionLookup, active: ActiveSession<PiSessionRuntime>): boolean {
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return !isPiSessionRef(ref) || cwdPathsEqual(active.runtime.cwd, ref.cwd);
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}
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type QueuedPromptKind = "steer" | "followUp";
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interface QueuedPrompt {
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kind: QueuedPromptKind;
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text: string;
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images?: ImageContent[];
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echoUserMessage?: boolean;
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}
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interface DeferredSubsessionNotification {
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parentId: string;
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childId: string;
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text: string;
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}
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interface TreeExclusiveOperationTarget {
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sessionId: string;
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session?: PiAgentSession;
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runtime?: PiSessionRuntime;
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}
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type PiTreeNavigationOptions =
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| { summarize: false }
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| { summarize: true; customInstructions?: string };
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function sessionTreeNavigationOptions(request: ClientSessionTreeNavigateRequest): PiTreeNavigationOptions {
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switch (request.summary.mode) {
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case "none":
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return { summarize: false };
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case "default":
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return { summarize: true };
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case "custom": {
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const customInstructions = request.summary.instructions.trim();
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if (customInstructions === "") throw new Error("Custom branch-summary instructions are required");
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if (customInstructions.length > SESSION_TREE_CUSTOM_INSTRUCTIONS_MAX_LENGTH) {
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throw new Error(`Custom branch-summary instructions must be at most ${String(SESSION_TREE_CUSTOM_INSTRUCTIONS_MAX_LENGTH)} characters`);
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}
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return { summarize: true, customInstructions };
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}
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}
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}
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function decrementWeakCount<Key extends object>(counts: WeakMap<Key, number>, key: Key): void {
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const remaining = (counts.get(key) ?? 1) - 1;
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if (remaining <= 0) counts.delete(key);
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else counts.set(key, remaining);
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}
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function decrementMapCount<Key>(counts: Map<Key, number>, key: Key): void {
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const remaining = (counts.get(key) ?? 1) - 1;
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if (remaining <= 0) counts.delete(key);
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else counts.set(key, remaining);
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}
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interface TrackedSubsessionLink {
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parentSessionId: string;
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childSessionId: string;
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childSessionFile?: string;
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parentSessionFile?: string;
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cwd?: string;
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}
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interface PersistedParentSubsessionLink {
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spawnedBySessionId: string;
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spawnedSessionId: string;
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spawnedSessionFile?: string;
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cwd?: string;
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}
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interface PersistedChildSubsessionLink {
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spawnedBySessionId: string;
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spawnedSessionId: string;
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}
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type SessionCreationProvenance = "tracked-subsession";
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interface StartSessionOptions {
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parentSession?: string;
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initialModel?: AgentModel;
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}
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interface InternalStartSessionOptions extends StartSessionOptions {
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creationProvenance?: SessionCreationProvenance;
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}
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function requirePromptText(value: unknown): string {
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if (typeof value !== "string") throw new Error("Prompt text is required");
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return value;
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}
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function parsePromptStreamingBehavior(value: unknown): QueuedPromptKind | undefined {
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if (value === undefined) return undefined;
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if (value === "steer" || value === "followUp") return value;
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throw new Error('Prompt streamingBehavior must be "steer" or "followUp"');
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}
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type SessionArchiveRepository = Pick<SessionArchiveStore, "list" | "get" | "archive" | "restore" | "isArchived"> & {
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archiveMany?: (sessions: readonly ArchiveSessionInput[]) => Promise<ArchivedSessionRecord[]>;
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deleteArchived?: (sessionId: string) => Promise<void>;
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deleteArchivedMany?: (sessionIds: readonly string[]) => Promise<string[]>;
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};
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export type PiSessionRef = SessionRouteRef;
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type PiSessionLookup = SessionRouteLookup;
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export interface PiSessionListEntry {
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id: string;
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path: string;
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cwd: string;
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created: Date;
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modified: Date;
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messageCount: number;
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firstMessage: string;
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allMessagesText: string;
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name?: string;
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parentSessionPath?: string;
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}
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interface WorkspaceArchiveCandidate extends SessionArchiveTreeCandidate {
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cwd: string;
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listEntry?: PiSessionListEntry;
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activeSession?: PiAgentSession;
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}
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interface BulkSessionLookupContext {
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sessionsByCwd: Map<string, PiSessionListEntry[]>;
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allSessions?: readonly PiSessionListEntry[];
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}
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interface BulkArchivePlanItem {
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input: ArchiveSessionInput;
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}
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interface BulkDeletePlanItem {
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record: ArchivedSessionRecord;
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}
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type AgentModel = NonNullable<SpawnSessionInvocation["model"]>;
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export interface PiSessionManager {
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getCwd(): string;
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getSessionId(): string;
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getSessionFile(): string | undefined;
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getBranch(): unknown[];
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getEntries?(): readonly unknown[];
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getTree?(): readonly ProjectableSessionTreeNode[];
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getLeafId(): string | null;
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getHeader?(): { parentSession?: string } | null | undefined;
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appendCustomEntry?(customType: string, data?: unknown): string;
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}
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export interface PiSessionManagerGateway {
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list(cwd: string): Promise<PiSessionListEntry[]>;
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create(cwd: string, options?: { parentSession?: string }): PiSessionManager;
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/**
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* Legacy id-only lookup surface for older clients. This intentionally searches
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* only Pi's default session store, because custom session directories require
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* a cwd-scoped lookup.
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*/
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listAll?(): Promise<PiSessionListEntry[]>;
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open(path: string): PiSessionManager;
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}
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interface PiExtensionError {
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extensionPath: string;
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event: string;
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error: string;
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stack?: string;
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}
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interface PiExtensionBindings {
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uiContext?: ExtensionUIContext;
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mode?: "rpc";
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onError?: (error: PiExtensionError) => void;
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}
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export interface PiAgentSession {
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modelRuntime: ModelRuntime;
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/**
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* Narrow read/write of the SDK `SettingsManager`, exposing only the warning
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* suppression flags consumed here (e.g. `anthropicExtraUsage`). Used to gate
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* the Anthropic subscription-auth billing warning the same way the TUI does,
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* and to durably suppress it when the user dismisses the warning.
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*/
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settingsManager: {
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getWarnings(): { anthropicExtraUsage?: boolean };
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setWarnings(warnings: { anthropicExtraUsage?: boolean }): void;
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};
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sessionManager: PiSessionManager;
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scopedModels: readonly { model: AgentModel; thinkingLevel?: ClientThinkingLevel }[];
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sessionId: string;
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sessionFile: string | undefined;
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sessionName: string | undefined;
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messages: readonly unknown[];
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/**
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* Narrow read of the SDK `AgentState`. Only the in-flight partial is consumed
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* here: `state.streamingMessage` is the current streamed assistant message
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* (an `AssistantMessage`) while a turn is mid-stream, and `undefined`
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* otherwise (idle, or during post-message tool execution). Used by
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* {@link PiSessionService.streamSnapshot} to seed a joining client.
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*/
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readonly state: { readonly streamingMessage?: unknown };
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model: AgentModel | undefined;
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thinkingLevel: ClientThinkingLevel;
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isStreaming: boolean;
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isCompacting: boolean;
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isBashRunning: boolean;
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pendingMessageCount: number;
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extensionRunner: {
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getRegisteredCommands(): readonly { invocationName: string; description?: string }[];
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getUIContext(): ExtensionUIContext;
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setUIContext(uiContext?: ExtensionUIContext, mode?: "rpc"): void;
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};
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promptTemplates: readonly { name: string; description?: string }[];
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resourceLoader: { getSkills(): { skills: readonly { name: string; description?: string }[] } };
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subscribe(listener: (event: unknown) => void): () => void;
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bindExtensions(bindings: PiExtensionBindings): Promise<void>;
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compact(instructions?: string): Promise<{ summary: string; tokensBefore: number }>;
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getUserMessagesForForking(): readonly { entryId: string; text: string }[];
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getSessionStats(): { sessionId: string; totalMessages: number; userMessages: number; assistantMessages: number; toolCalls: number; tokens: ClientSessionStatus["tokens"]; cost: number };
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reload(options?: { beforeSessionStart?: () => void | Promise<void> }): Promise<void>;
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getContextUsage(): ClientSessionStatus["contextUsage"] | undefined;
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prompt(text: string, options?: { streamingBehavior?: "steer" | "followUp"; images?: ImageContent[] }): Promise<void>;
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sendCustomMessage(message: { customType: string; content: string; display: boolean; details?: unknown }, options?: { triggerTurn?: boolean; deliverAs?: "steer" | "followUp" | "nextTurn" }): Promise<void>;
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executeBash(command: string, onChunk?: (chunk: string) => void, options?: { excludeFromContext?: boolean }): Promise<{ output: string; exitCode: number | undefined; cancelled: boolean; truncated: boolean; fullOutputPath?: string }>;
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navigateTree?(targetId: string, options?: { summarize?: boolean; customInstructions?: string }): Promise<{ editorText?: string; cancelled: boolean; aborted?: boolean; summaryEntry?: unknown }>;
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abortBranchSummary?(): void;
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abort(): Promise<void>;
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clearQueue(): { steering: string[]; followUp: string[] };
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getSteeringMessages(): readonly string[];
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getFollowUpMessages(): readonly string[];
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setModel(model: AgentModel): Promise<void>;
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cycleModel(direction?: "forward" | "backward"): Promise<{ model: AgentModel } | undefined>;
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getAvailableThinkingLevels(): ClientThinkingLevel[];
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setThinkingLevel(level: ClientThinkingLevel): void;
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cycleThinkingLevel(): ClientThinkingLevel | undefined;
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setSessionName(name: string): void;
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/**
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* Narrow re-expression of `AgentSession.agent` (an `@earendil-works/pi-agent-core`
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* `Agent`), exposing only `streamFn` — the resolved-auth/headers/retry "call this
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* model" function pi's own compaction/branch-summarization code uses internally.
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* Lets callers (e.g. session title generation) issue one-off model calls without
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* depending on pi-ai's deprecated `/compat` provider registry or leaking the full
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* `Agent`/`AgentSession` surface.
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*/
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agent: { streamFn: StreamFn };
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}
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export interface PiSessionRuntime {
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readonly cwd: string;
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readonly session: PiAgentSession;
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/**
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* Live, runtime-scoped diagnostics/services used to compute session warnings.
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*
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* These mirror the SDK runtime and are recomputed whenever the runtime is
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* (re)built. `undefined` on lightweight/test runtimes that do not carry SDK
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* services; callers must treat missing sources as "no warnings".
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*/
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readonly diagnostics?: readonly AgentSessionRuntimeDiagnostic[];
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readonly services?: AgentSessionServices;
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setRebindSession(rebindSession?: (session: PiAgentSession) => Promise<void>): void;
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fork(entryId: string, options?: { position?: "before" | "at" }): Promise<{ cancelled: boolean; selectedText?: string }>;
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dispose(): Promise<void>;
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}
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interface PendingSessionOpen {
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sessionId: string;
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promise: Promise<ActiveSession<PiSessionRuntime>>;
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}
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interface CreateSessionRuntimeOptions extends Pick<InternalStartSessionOptions, "initialModel" | "creationProvenance"> {
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notificationGeneration?: SessionNotificationGeneration;
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notifications?: "enabled" | "disabled";
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}
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type NotificationClosePolicy =
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| { kind: "clear"; reason: SessionNotificationClearReason }
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| { kind: "defer" };
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const CLEAR_RUNTIME_NOTIFICATIONS: NotificationClosePolicy = { kind: "clear", reason: "runtime-close" };
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const DEFER_RUNTIME_NOTIFICATIONS: NotificationClosePolicy = { kind: "defer" };
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function resourceDiagnosticToWarning(diagnostic: ResourceDiagnostic, source: string): SessionWarning {
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return {
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severity: diagnostic.type === "error" ? "error" : "warning",
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message: diagnostic.message,
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source,
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...(diagnostic.path === undefined ? {} : { path: diagnostic.path }),
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};
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}
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function runtimeDiagnosticToWarning(diagnostic: AgentSessionRuntimeDiagnostic): SessionWarning {
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return { severity: diagnostic.type, message: diagnostic.message, source: "runtime" };
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}
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/**
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* Minimal structural view of a runtime's warning sources: the runtime setup
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* diagnostics plus the resource loader's per-collection diagnostics and
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* extension load errors. Narrowed to just what {@link collectRuntimeWarnings}
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* reads so the real SDK runtime and lightweight test doubles both satisfy it.
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*/
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export interface RuntimeWarningSources {
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readonly diagnostics?: readonly AgentSessionRuntimeDiagnostic[];
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readonly services?: {
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resourceLoader: {
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getSkills(): { diagnostics: readonly ResourceDiagnostic[] };
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getPrompts(): { diagnostics: readonly ResourceDiagnostic[] };
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getThemes(): { diagnostics: readonly ResourceDiagnostic[] };
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getExtensions(): { errors: readonly { path: string; error: string }[] };
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};
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};
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}
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|
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/**
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* Compute the live warnings for a runtime by re-reading its current resource
|
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* loader diagnostics, extension load errors, and runtime setup diagnostics.
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*
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* This mimics the TUI recomputing warnings on every (re)bind: it reads the
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* runtime's current state rather than a cached snapshot, so a rebuilt runtime
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* yields fresh warnings. Runtimes without SDK services (e.g. test fakes)
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* contribute no warnings.
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*/
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export function collectRuntimeWarnings(runtime: RuntimeWarningSources): SessionWarning[] {
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const warnings: SessionWarning[] = [];
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for (const diagnostic of runtime.diagnostics ?? []) warnings.push(runtimeDiagnosticToWarning(diagnostic));
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const resourceLoader = runtime.services?.resourceLoader;
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if (resourceLoader !== undefined) {
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for (const diagnostic of resourceLoader.getSkills().diagnostics) warnings.push(resourceDiagnosticToWarning(diagnostic, "skill"));
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for (const diagnostic of resourceLoader.getPrompts().diagnostics) warnings.push(resourceDiagnosticToWarning(diagnostic, "prompt"));
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for (const diagnostic of resourceLoader.getThemes().diagnostics) warnings.push(resourceDiagnosticToWarning(diagnostic, "theme"));
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for (const error of resourceLoader.getExtensions().errors) {
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warnings.push({ severity: "error", message: `${error.path}: ${error.error}`, source: "extension", path: error.path });
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}
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}
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return warnings;
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}
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|
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/**
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* Verbatim TUI wording for the Anthropic subscription-auth billing notice. Kept
|
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* character-for-character in sync with `ANTHROPIC_SUBSCRIPTION_AUTH_WARNING` in
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* the SDK's interactive mode so the browser shows the same message the TUI does.
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*/
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const ANTHROPIC_SUBSCRIPTION_AUTH_WARNING =
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"Anthropic subscription auth is active. Third-party harness usage draws from extra usage and is billed per token, not your Claude plan limits. Manage extra usage at https://claude.ai/settings/usage.";
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/** Mirror of the SDK TUI `isAnthropicSubscriptionAuthKey` (subscription API keys start with `sk-ant-oat`). */
|
|
function isAnthropicSubscriptionAuthKey(apiKey: string | undefined): boolean {
|
|
return typeof apiKey === "string" && apiKey.startsWith("sk-ant-oat");
|
|
}
|
|
|
|
/**
|
|
* Dismiss id for the Anthropic subscription-auth billing notice. This is `pi`'s
|
|
* own `WarningSettings` key verbatim (`anthropicExtraUsage`): we carry the
|
|
* coupling `pi` already defines rather than inventing a parallel vocabulary, and
|
|
* {@link dismissSessionWarning} maps it back to `setWarnings`.
|
|
*/
|
|
const ANTHROPIC_EXTRA_USAGE_DISMISS_ID = "anthropicExtraUsage";
|
|
|
|
/**
|
|
* Port of the TUI `maybeWarnAboutAnthropicSubscriptionAuth` gate/trigger, computed
|
|
* live from the session's current model, stored Anthropic credential, and warning
|
|
* settings. Returns the billing warning when the active provider is `anthropic`
|
|
* and auth is a subscription credential (stored `oauth`, or an `sk-ant-oat` API
|
|
* key), unless suppressed via `getWarnings().anthropicExtraUsage === false`.
|
|
*
|
|
* The stored credential is read synchronously (matching the TUI's `oauth` branch
|
|
* and the documented `sk-ant-oat` key trigger) so warnings stay part of the
|
|
* synchronous live status computation.
|
|
*/
|
|
export function anthropicSubscriptionWarning(
|
|
session: Pick<PiAgentSession, "model" | "settingsManager">,
|
|
authPath?: string,
|
|
): SessionWarning | undefined {
|
|
if (session.settingsManager.getWarnings().anthropicExtraUsage === false) return undefined;
|
|
if (session.model?.provider !== "anthropic") return undefined;
|
|
const credential = readStoredCredential("anthropic", authPath);
|
|
if (credential === undefined) return undefined;
|
|
const isSubscriptionAuth = credential.type === "oauth"
|
|
? true
|
|
: isAnthropicSubscriptionAuthKey(credential.key);
|
|
if (!isSubscriptionAuth) return undefined;
|
|
return {
|
|
severity: "warning",
|
|
message: ANTHROPIC_SUBSCRIPTION_AUTH_WARNING,
|
|
source: "anthropic",
|
|
dismiss: { id: ANTHROPIC_EXTRA_USAGE_DISMISS_ID },
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Durably suppress a dismissable session warning by mapping its opaque dismiss
|
|
* id back to the concrete `pi` suppression it represents. Only known ids are
|
|
* honored; unknown ids throw so a stale/forged client cannot silently no-op.
|
|
*
|
|
* This is the single place provider-specific suppression lives: the wire type,
|
|
* parser, and UI stay agnostic. Adding a future dismissable warning is a
|
|
* server-only change here plus a `dismiss` id on its producer.
|
|
*/
|
|
export function dismissSessionWarning(
|
|
session: Pick<PiAgentSession, "settingsManager">,
|
|
dismissId: string,
|
|
): void {
|
|
if (dismissId !== ANTHROPIC_EXTRA_USAGE_DISMISS_ID) {
|
|
throw new Error(`Unknown session warning dismiss id: ${dismissId}`);
|
|
}
|
|
session.settingsManager.setWarnings({ ...session.settingsManager.getWarnings(), anthropicExtraUsage: false });
|
|
}
|
|
|
|
interface CreateAgentRuntimeOptions {
|
|
cwd: string;
|
|
agentDir: string;
|
|
sessionManager: PiSessionManager;
|
|
delegationToolsEnabled: boolean;
|
|
initialModel?: AgentModel;
|
|
}
|
|
|
|
type PiWebRuntimeFactoryOptions = Parameters<CreateAgentSessionRuntimeFactory>[0] & {
|
|
delegationToolsEnabled?: boolean;
|
|
initialModel?: AgentModel;
|
|
};
|
|
|
|
type PiWebCreateAgentSessionRuntimeFactory = (
|
|
options: PiWebRuntimeFactoryOptions
|
|
) => ReturnType<CreateAgentSessionRuntimeFactory>;
|
|
|
|
type CreateAgentRuntime = (createRuntime: PiWebCreateAgentSessionRuntimeFactory, options: CreateAgentRuntimeOptions) => Promise<PiSessionRuntime>;
|
|
|
|
function defaultCreateAgentRuntime(createRuntime: PiWebCreateAgentSessionRuntimeFactory, options: CreateAgentRuntimeOptions): Promise<PiSessionRuntime> {
|
|
if (!(options.sessionManager instanceof SessionManager)) throw new Error("Default runtime creation requires an SDK SessionManager");
|
|
const runtimeFactory = createRuntimeWithOneShotSessionOptions(createRuntime, options.initialModel, options.delegationToolsEnabled);
|
|
return createAgentSessionRuntime(runtimeFactory, {
|
|
cwd: options.cwd,
|
|
agentDir: options.agentDir,
|
|
sessionManager: options.sessionManager,
|
|
});
|
|
}
|
|
|
|
function createRuntimeWithOneShotSessionOptions(
|
|
createRuntime: PiWebCreateAgentSessionRuntimeFactory,
|
|
initialModel: AgentModel | undefined,
|
|
delegationToolsEnabled: boolean,
|
|
): CreateAgentSessionRuntimeFactory {
|
|
// These inputs belong only to the session being opened. A later runtime
|
|
// replacement resolves its own model and delegation capability.
|
|
let pendingInitialModel = initialModel;
|
|
let pendingDelegationToolsEnabled: boolean | undefined = delegationToolsEnabled;
|
|
return async (options) => {
|
|
const model = pendingInitialModel;
|
|
const toolsEnabled = pendingDelegationToolsEnabled;
|
|
pendingInitialModel = undefined;
|
|
pendingDelegationToolsEnabled = undefined;
|
|
return createRuntime({
|
|
...options,
|
|
...(model === undefined ? {} : { initialModel: model }),
|
|
...(toolsEnabled === undefined ? {} : { delegationToolsEnabled: toolsEnabled }),
|
|
});
|
|
};
|
|
}
|
|
|
|
type SpawnSessionFn = (input: SpawnSessionInvocation) => Promise<SpawnSessionResult>;
|
|
|
|
export function createPiWebCustomToolDefinitions(
|
|
cwd: string,
|
|
delegationEnabled: boolean,
|
|
spawn?: SpawnSessionFn,
|
|
subsessions?: SubsessionToolDeps,
|
|
) {
|
|
return [
|
|
createPiWebEditToolDefinition(cwd),
|
|
...(delegationEnabled && spawn !== undefined ? [createSpawnSessionToolDefinition(cwd, { spawn })] : []),
|
|
...(delegationEnabled && subsessions !== undefined ? createSubsessionToolDefinitions(cwd, subsessions) : []),
|
|
];
|
|
}
|
|
|
|
function createDefaultRuntimeFactory(
|
|
modelRuntime: ModelRuntime,
|
|
sessionManagers: Pick<PiSessionManagerGateway, "open">,
|
|
spawn?: SpawnSessionFn,
|
|
subsessions?: SubsessionToolDeps,
|
|
): PiWebCreateAgentSessionRuntimeFactory {
|
|
return async ({ cwd, agentDir, sessionManager, sessionStartEvent, initialModel, delegationToolsEnabled }) => {
|
|
const services = await createAgentSessionServices({ cwd, agentDir, modelRuntime });
|
|
const resolvedDelegationToolsEnabled = delegationToolsEnabled
|
|
?? await sessionAllowsDelegationTools(sessionManager, sessionManagers);
|
|
const customTools = createPiWebCustomToolDefinitions(cwd, resolvedDelegationToolsEnabled, spawn, subsessions);
|
|
const result = await createAgentSessionFromServices({
|
|
services,
|
|
sessionManager,
|
|
customTools,
|
|
...(sessionStartEvent === undefined ? {} : { sessionStartEvent }),
|
|
...(initialModel === undefined ? {} : { model: initialModel }),
|
|
});
|
|
return { ...result, services, diagnostics: services.diagnostics };
|
|
};
|
|
}
|
|
|
|
type PiWebEditToolDetails = EditToolDetails | { preview: EditPreviewResult } | undefined;
|
|
|
|
function createPiWebEditToolDefinition(cwd: string) {
|
|
const editTool = createEditToolDefinition(cwd);
|
|
return defineTool<typeof editTool.parameters, PiWebEditToolDetails>({
|
|
name: editTool.name,
|
|
label: editTool.label,
|
|
description: editTool.description,
|
|
...(editTool.promptSnippet === undefined ? {} : { promptSnippet: editTool.promptSnippet }),
|
|
...(editTool.promptGuidelines === undefined ? {} : { promptGuidelines: editTool.promptGuidelines }),
|
|
parameters: editTool.parameters,
|
|
...(editTool.renderShell === undefined ? {} : { renderShell: editTool.renderShell }),
|
|
...(editTool.prepareArguments === undefined ? {} : { prepareArguments: editTool.prepareArguments }),
|
|
...(editTool.executionMode === undefined ? {} : { executionMode: editTool.executionMode }),
|
|
async execute(toolCallId, params, signal, onUpdate, ctx) {
|
|
const preview = await computeEditPreview(params.path, params.edits, cwd);
|
|
if (signal?.aborted !== true) {
|
|
onUpdate?.({ content: [{ type: "text", text: "Edit preview computed." }], details: { preview } });
|
|
}
|
|
return editTool.execute(toolCallId, params, signal, onUpdate, ctx);
|
|
},
|
|
});
|
|
}
|
|
|
|
export interface PiSessionServiceDependencies {
|
|
agentDir: string;
|
|
sessionManager: PiSessionManagerGateway;
|
|
archiveStore?: SessionArchiveRepository;
|
|
createRuntime?: PiWebCreateAgentSessionRuntimeFactory;
|
|
createAgentRuntime?: CreateAgentRuntime;
|
|
modelRuntime: ModelRuntime;
|
|
heartbeatIntervalMs?: number;
|
|
workspaceActivity?: Pick<WorkspaceActivityService, "applySessionStatus" | "applySessionActivity" | "removeSession" | "reconcileSessionActivity">;
|
|
/**
|
|
* When provided, `spawn_session` is available to sessions whose creation
|
|
* provenance permits delegation, scoped to the project's workspaces.
|
|
* Omit to keep the capability disabled.
|
|
*/
|
|
spawnTargets?: SpawnTargetResolver;
|
|
/**
|
|
* Beta: when true (and `spawnTargets` is provided), the tracked-subsession
|
|
* tools are available to sessions whose creation provenance permits
|
|
* delegation. Off by default so the capability can ship in main without
|
|
* being exposed in releases.
|
|
*/
|
|
subsessionsEnabled?: boolean;
|
|
/** Structured logger for notable runtime events (e.g. spawns). */
|
|
logger?: PiSessionLogger;
|
|
/** Clock seam for cleanup planning tests. */
|
|
now?: () => Date;
|
|
/** Daemon-lifetime notification state, injected by sessiond in production. */
|
|
notificationStore?: SessionNotificationStore;
|
|
/** Durable daemon-owned unread state; defaults to an in-memory store in tests. */
|
|
unreadStore?: SessionUnreadStore;
|
|
/** Initial retry delay for durable unread publication failures. */
|
|
unreadPublicationRetryDelayMs?: number;
|
|
}
|
|
|
|
export class PiSessionService implements SessionRouteService {
|
|
private readonly active = new Map<string, ActiveSession<PiSessionRuntime>>();
|
|
private readonly pendingSessionOpens = new Map<string, PendingSessionOpen>();
|
|
private readonly activities = new Map<string, { phase: "active" | "idle" | "error"; label: string; detail?: string; at: string }>();
|
|
private readonly heartbeat: NodeJS.Timeout;
|
|
private readonly commandService: SessionCommandService<PiAgentSession>;
|
|
/** Runtime-identity gate held while Pi may await abandoned-branch summarization. */
|
|
private readonly treeNavigations = new WeakSet<PiAgentSession>();
|
|
/** Counts async operations that may append an entry before they settle. */
|
|
private readonly sessionEntryMutationCounts = new WeakMap<PiAgentSession, number>();
|
|
/** Runtime/session-identity reservations for operations that must not overlap tree navigation. */
|
|
private readonly treeExclusiveRuntimeOperationCounts = new WeakMap<PiSessionRuntime, number>();
|
|
private readonly treeExclusiveSessionOperationCounts = new Map<string, number>();
|
|
private readonly deferredSubsessionNotifications = new WeakMap<PiAgentSession, DeferredSubsessionNotification[]>();
|
|
private readonly deferredGeneratedSessionNames = new WeakMap<PiAgentSession, string>();
|
|
private readonly compactionPromptQueues = new Map<string, QueuedPrompt[]>();
|
|
private readonly compactionDrainTimers = new Map<string, NodeJS.Timeout>();
|
|
private readonly authLossWarnings = new Set<string>();
|
|
/** Tracked subsession id -> the parent session id that spawned it. */
|
|
private readonly subsessionParents = new Map<string, string>();
|
|
/** Parent session id -> the set of tracked subsession ids it spawned. */
|
|
private readonly subsessionChildren = new Map<string, Set<string>>();
|
|
/** Tracked subsession id -> persisted recovery details for the child. */
|
|
private readonly subsessionLinks = new Map<string, TrackedSubsessionLink>();
|
|
/** Parent id/file identities whose persisted links have already been loaded. */
|
|
private readonly subsessionHydratedParents = new Set<string>();
|
|
/**
|
|
* Tracked subsession id -> whether a completion notification is armed.
|
|
* Armed when the child starts working; firing on completion disarms it so a
|
|
* child that works again (and stops again) notifies the parent each time.
|
|
*/
|
|
private readonly subsessionNotifyArmed = new Map<string, boolean>();
|
|
private readonly archiveStore: SessionArchiveRepository;
|
|
private readonly agentDir: string;
|
|
private readonly sessionManager: PiSessionManagerGateway;
|
|
private readonly createRuntime: PiWebCreateAgentSessionRuntimeFactory;
|
|
private readonly createAgentRuntime: CreateAgentRuntime;
|
|
private readonly modelRuntime: ModelRuntime;
|
|
private readonly workspaceActivity: Pick<WorkspaceActivityService, "applySessionStatus" | "applySessionActivity" | "removeSession" | "reconcileSessionActivity"> | undefined;
|
|
private readonly spawnTargets: SpawnTargetResolver | undefined;
|
|
private readonly logger: PiSessionLogger;
|
|
private readonly now: () => Date;
|
|
private readonly notificationStore: SessionNotificationStore;
|
|
private readonly notificationGenerationBySession = new WeakMap<PiAgentSession, SessionNotificationGeneration>();
|
|
private readonly unreadStore: SessionUnreadStore;
|
|
private readonly unreadPublicationRetryInitialMs: number;
|
|
private readonly pendingUnreadMutations: SessionUnreadMutation[] = [];
|
|
private unreadPublication: Promise<void> | undefined;
|
|
private unreadPublicationFailure: unknown;
|
|
private unreadPublicationFlushRequested = false;
|
|
private unreadPublicationRetryTimer: NodeJS.Timeout | undefined;
|
|
private unreadPublicationRetryDelayMs: number;
|
|
private unreadPublicationStopped = false;
|
|
|
|
constructor(private readonly events: SessionEventHub, deps: PiSessionServiceDependencies) {
|
|
this.archiveStore = deps.archiveStore ?? new SessionArchiveStore();
|
|
this.agentDir = deps.agentDir;
|
|
this.sessionManager = deps.sessionManager;
|
|
this.modelRuntime = deps.modelRuntime;
|
|
this.spawnTargets = deps.spawnTargets;
|
|
this.logger = deps.logger ?? noopLogger;
|
|
this.now = deps.now ?? (() => new Date());
|
|
this.notificationStore = deps.notificationStore ?? new SessionNotificationStore();
|
|
this.unreadStore = deps.unreadStore ?? new SessionUnreadStore();
|
|
this.unreadPublicationRetryInitialMs = Math.max(
|
|
0,
|
|
deps.unreadPublicationRetryDelayMs ?? DEFAULT_UNREAD_PUBLICATION_RETRY_MS,
|
|
);
|
|
this.unreadPublicationRetryDelayMs = this.unreadPublicationRetryInitialMs;
|
|
// Subsessions are a beta capability gated behind their own flag, and they
|
|
// also require the spawn capability (they share its project-scope resolver).
|
|
const subsessionsActive = this.spawnTargets !== undefined && deps.subsessionsEnabled === true;
|
|
this.createRuntime = deps.createRuntime ?? createDefaultRuntimeFactory(
|
|
this.modelRuntime,
|
|
this.sessionManager,
|
|
this.spawnTargets === undefined ? undefined : (input) => this.spawnSession(input),
|
|
!subsessionsActive ? undefined : {
|
|
spawn: (input) => this.spawnSubsession(input),
|
|
list: (parentSessionId, parentSessionFile) => this.listSubsessions(parentSessionId, parentSessionFile),
|
|
check: (parentSessionId, sessionId, parentSessionFile) => this.checkSubsession(parentSessionId, sessionId, parentSessionFile),
|
|
read: (parentSessionId, sessionId, query, parentSessionFile) => this.readSubsession(parentSessionId, sessionId, query, parentSessionFile),
|
|
},
|
|
);
|
|
this.createAgentRuntime = deps.createAgentRuntime ?? defaultCreateAgentRuntime;
|
|
this.workspaceActivity = deps.workspaceActivity;
|
|
this.heartbeat = setInterval(() => { this.publishHeartbeats(); }, deps.heartbeatIntervalMs ?? 2000);
|
|
this.commandService = new SessionCommandService(
|
|
(sessionId) => this.getActive(sessionId),
|
|
(sessionId, text) => this.prompt(sessionId, text, undefined, undefined, { echoUserMessage: false }),
|
|
events,
|
|
{
|
|
onCompactionStart: (session) => {
|
|
this.beginSessionEntryMutation(session, "compact the session");
|
|
this.publishActivity(session, "compacting", "active");
|
|
this.publishStatus(session);
|
|
},
|
|
onCompactionEnd: (session, result, detail) => {
|
|
this.endSessionEntryMutation(session);
|
|
this.publishActivity(session, result === "success" ? "compaction complete" : "compaction failed", result === "success" ? "idle" : "error", detail);
|
|
this.publishStatus(session);
|
|
},
|
|
reloadSession: (session) => this.reloadSessionRuntime(session),
|
|
getSessionTree: (session) => {
|
|
if (typeof session.sessionManager.getTree !== "function" || typeof session.navigateTree !== "function") return undefined;
|
|
return projectSessionTree(session.sessionManager.getTree(), session.sessionManager.getLeafId());
|
|
},
|
|
hasActiveWork: (session) => this.hasActiveWork(session),
|
|
isTreeNavigationActive: (session) => this.treeNavigations.has(session),
|
|
runSessionReplacement: (session, operation) => this.runTreeExclusiveOperation(
|
|
[{ sessionId: session.sessionId, session }],
|
|
"Stop current session activity before replacing the session",
|
|
operation,
|
|
),
|
|
},
|
|
{ listSessionNames: (cwd) => this.listSessionNames(cwd) },
|
|
);
|
|
}
|
|
|
|
activeCount(): number {
|
|
return this.active.size;
|
|
}
|
|
|
|
notificationCatalog(): SessionNotificationCatalogSnapshot {
|
|
return this.notificationStore.catalogSnapshot();
|
|
}
|
|
|
|
async unreadCatalog(): Promise<SessionUnreadCatalogSnapshot> {
|
|
await this.publishUnreadMutations([]);
|
|
return this.unreadStore.durableCatalogSnapshot();
|
|
}
|
|
|
|
async acknowledgeUnread(sessionId: string, request: SessionUnreadAcknowledgeRequest): Promise<SessionUnreadCatalogSnapshot> {
|
|
const result = this.unreadStore.acknowledge(sessionId, {
|
|
...request,
|
|
cwd: canonicalizeStoredCwd(request.cwd),
|
|
});
|
|
await this.publishUnreadMutations(result.mutations);
|
|
return this.unreadStore.durableCatalogSnapshot();
|
|
}
|
|
|
|
notificationInbox(ref: PiSessionRef): SessionNotificationInboxSnapshot {
|
|
return this.notificationStore.inboxSnapshot(ref.id, canonicalizeStoredCwd(ref.cwd));
|
|
}
|
|
|
|
dismissNotification(
|
|
ref: PiSessionRef,
|
|
request: Omit<SessionNotificationDismissRequest, "cwd">,
|
|
): SessionNotificationInboxSnapshot {
|
|
const result = this.notificationStore.dismissNotification(
|
|
ref.id,
|
|
canonicalizeStoredCwd(ref.cwd),
|
|
request.daemonInstanceId,
|
|
request.notificationId,
|
|
);
|
|
this.publishNotificationMutations(result.mutations);
|
|
return result.snapshot;
|
|
}
|
|
|
|
dismissAllNotifications(
|
|
ref: PiSessionRef,
|
|
request: Omit<SessionNotificationDismissAllRequest, "cwd">,
|
|
): SessionNotificationInboxSnapshot {
|
|
const result = this.notificationStore.dismissAll(
|
|
ref.id,
|
|
canonicalizeStoredCwd(ref.cwd),
|
|
request.daemonInstanceId,
|
|
request.throughOrder,
|
|
request.throughOverflowWatermark,
|
|
);
|
|
this.publishNotificationMutations(result.mutations);
|
|
return result.snapshot;
|
|
}
|
|
|
|
async cleanupPreview(request: NormalizedSessionCleanupRequest): Promise<ClientSessionCleanupPreviewResponse> {
|
|
return previewResponseFromPlan(await this.cleanupPlan(request));
|
|
}
|
|
|
|
async cleanup(request: NormalizedSessionCleanupRequest): Promise<ClientSessionCleanupExecuteResponse> {
|
|
const plan = await this.cleanupPlan(request);
|
|
if (plan.deleteRecords.length > 0 && this.archiveStore.deleteArchived === undefined && this.archiveStore.deleteArchivedMany === undefined) throw new Error("Archive store does not support deletion");
|
|
|
|
const archiveInputs: ArchiveSessionInput[] = [];
|
|
const readyArchiveInputs: ArchiveSessionInput[] = [];
|
|
const deleteRecords: ArchivedSessionRecord[] = [];
|
|
const readyDeleteRecords: ArchivedSessionRecord[] = [];
|
|
const skippedBusySessionIds = new Set(plan.skippedBusySessionIds);
|
|
|
|
for (const input of plan.archiveInputs) {
|
|
if (this.activeSessionHasWork(input.sessionId)) {
|
|
skippedBusySessionIds.add(input.sessionId);
|
|
continue;
|
|
}
|
|
await this.closeActive(input.sessionId, { kind: "clear", reason: "archive" });
|
|
readyArchiveInputs.push(input);
|
|
}
|
|
await this.archiveStoreArchiveMany(readyArchiveInputs);
|
|
archiveInputs.push(...readyArchiveInputs);
|
|
await this.forgetUnreadSessions(readyArchiveInputs);
|
|
|
|
for (const record of plan.deleteRecords) {
|
|
if (this.activeSessionHasWork(record.sessionId)) {
|
|
skippedBusySessionIds.add(record.sessionId);
|
|
continue;
|
|
}
|
|
await this.closeActive(record.sessionId, { kind: "clear", reason: "delete" });
|
|
readyDeleteRecords.push(record);
|
|
}
|
|
await this.ensureArchivedRecordsMoved(readyDeleteRecords);
|
|
const deletedSessionIds = new Set(await this.archiveStoreDeleteArchivedMany(readyDeleteRecords.map((record) => record.sessionId)));
|
|
deleteRecords.push(...readyDeleteRecords.filter((record) => deletedSessionIds.has(record.sessionId)));
|
|
await this.forgetUnreadSessions(deleteRecords);
|
|
|
|
return summarizeSessionCleanupExecution({
|
|
archiveInputs,
|
|
deleteRecords,
|
|
thresholds: plan.thresholds,
|
|
generatedAt: plan.generatedAt,
|
|
skippedBusySessionIds: [...skippedBusySessionIds],
|
|
});
|
|
}
|
|
|
|
async dispose(): Promise<void> {
|
|
this.unreadPublicationStopped = true;
|
|
this.clearUnreadPublicationRetry();
|
|
clearInterval(this.heartbeat);
|
|
this.clearCompactionDrainTimers();
|
|
const pendingOpens = this.pendingSessionOpenPromises();
|
|
if (pendingOpens.length > 0) await Promise.allSettled(pendingOpens);
|
|
const activeSessions = Array.from(new Set(this.active.values()));
|
|
for (const active of activeSessions) this.forgetUnreadActivity(active.runtime.session);
|
|
this.active.clear();
|
|
this.pendingSessionOpens.clear();
|
|
this.activities.clear();
|
|
this.compactionPromptQueues.clear();
|
|
this.authLossWarnings.clear();
|
|
this.subsessionParents.clear();
|
|
this.subsessionChildren.clear();
|
|
this.subsessionLinks.clear();
|
|
this.subsessionHydratedParents.clear();
|
|
this.subsessionNotifyArmed.clear();
|
|
this.notificationStore.clearAll("service-dispose");
|
|
await Promise.all(activeSessions.map(async (active) => {
|
|
active.unsubscribe();
|
|
active.runtime.setRebindSession(undefined);
|
|
this.workspaceActivity?.removeSession(active.runtime.session.sessionId, active.runtime.session.sessionManager.getCwd());
|
|
try {
|
|
await this.abortSessionOperations(active.runtime.session);
|
|
} finally {
|
|
await active.runtime.dispose();
|
|
}
|
|
}));
|
|
await this.publishUnreadMutations([]);
|
|
}
|
|
|
|
async list(cwd: string): Promise<ClientSession[]> {
|
|
const [sessions, archivedRecords] = await Promise.all([this.sessionManager.list(cwd), this.archiveStore.list()]);
|
|
const sessionsById = new Map(sessions.map((session) => [session.id, session]));
|
|
const archivedForCwd = await Promise.all(
|
|
archivedRecords
|
|
.filter((record) => record.cwd === cwd)
|
|
.map((record) => this.ensureArchivedSessionMoved(record, sessionsById.get(record.sessionId))),
|
|
);
|
|
const archivedById = new Map(archivedForCwd.map((record) => [record.sessionId, record]));
|
|
for (const record of archivedForCwd) {
|
|
this.publishNotificationMutations(this.notificationStore.clearSession(record.sessionId, "archive-reconcile"));
|
|
}
|
|
const unarchivedSessions = sessions.filter((session) => !archivedById.has(session.id)).map(clientSessionFromListEntry);
|
|
const reconcilableSessionIds = this.reconcilableSessionIds(cwd, unarchivedSessions.map((session) => session.id), archivedById);
|
|
this.workspaceActivity?.reconcileSessionActivity(cwd, reconcilableSessionIds);
|
|
await this.publishUnreadMutations(this.unreadStore.reconcileCwd(canonicalizeStoredCwd(cwd), reconcilableSessionIds));
|
|
const archivedSessions = archivedForCwd
|
|
.sort(compareArchivedRecords)
|
|
.map((record) => clientSessionFromArchivedRecord(record, sessionsById.get(record.sessionId)))
|
|
.filter(isDefined);
|
|
return [...unarchivedSessions, ...archivedSessions];
|
|
}
|
|
|
|
async start(cwd: string, options: StartSessionOptions = {}): Promise<ClientSession> {
|
|
return this.startSession(cwd, options);
|
|
}
|
|
|
|
private async startSession(cwd: string, options: InternalStartSessionOptions): Promise<ClientSession> {
|
|
const active = await this.create(
|
|
this.sessionManager.create(cwd, options.parentSession === undefined ? undefined : { parentSession: options.parentSession }),
|
|
cwd,
|
|
{
|
|
...(options.initialModel === undefined ? {} : { initialModel: options.initialModel }),
|
|
...(options.creationProvenance === undefined ? {} : { creationProvenance: options.creationProvenance }),
|
|
},
|
|
);
|
|
const { session } = active.runtime;
|
|
const created: ClientSession = {
|
|
id: session.sessionId,
|
|
path: session.sessionFile ?? "",
|
|
cwd,
|
|
persisted: sessionFileExists(session.sessionFile),
|
|
created: new Date().toISOString(),
|
|
modified: new Date().toISOString(),
|
|
messageCount: session.messages.length,
|
|
firstMessage: "",
|
|
// Include the parent so listeners can nest the new session in the tree
|
|
// immediately, instead of showing it flat until the next reload.
|
|
...(options.parentSession === undefined ? {} : { parentSessionPath: options.parentSession }),
|
|
};
|
|
// Broadcast so other clients (and the spawning agent's UI) can add the new
|
|
// session to their list without a manual reload.
|
|
this.events.publishGlobal({ type: "session.created", session: created });
|
|
return created;
|
|
}
|
|
|
|
/**
|
|
* Start a new session on behalf of a LLM and deliver an initial prompt to it.
|
|
* The target cwd is constrained to a workspace of the same registered project
|
|
* as the spawning session so the new session is visible in the web UI.
|
|
*/
|
|
async spawnSession(input: SpawnSessionInvocation): Promise<SpawnSessionResult> {
|
|
if (this.spawnTargets === undefined) throw new Error("Spawning sessions is disabled");
|
|
const decision = await this.spawnTargets.resolveSpawnTarget(input.spawningCwd, input.cwd);
|
|
if (!decision.allowed) throw spawnTargetError(decision);
|
|
const created = await this.start(decision.cwd, input.model === undefined ? {} : { initialModel: input.model });
|
|
await this.prompt(created.id, input.prompt);
|
|
this.logger.info(
|
|
{ spawningCwd: input.spawningCwd, sessionId: created.id, cwd: decision.cwd, promptLength: input.prompt.length },
|
|
"spawn_session started a new session",
|
|
);
|
|
return { sessionId: created.id, cwd: decision.cwd };
|
|
}
|
|
|
|
/**
|
|
* Start a *tracked* child session on behalf of a LLM. Identical to
|
|
* {@link spawnSession} in how the target cwd is resolved, but the child
|
|
* records its parent (so it shows in the session tree) and is registered so
|
|
* the parent is notified when it stops working and can inspect it later.
|
|
*/
|
|
async spawnSubsession(input: SpawnSubsessionInvocation): Promise<SpawnSubsessionResult> {
|
|
if (this.spawnTargets === undefined) throw new Error("Spawning sessions is disabled");
|
|
const decision = await this.spawnTargets.resolveSpawnTarget(input.spawningCwd, input.cwd);
|
|
if (!decision.allowed) throw spawnTargetError(decision);
|
|
const created = await this.startSession(decision.cwd, {
|
|
...(input.parentSessionFile === undefined ? {} : { parentSession: input.parentSessionFile }),
|
|
...(input.model === undefined ? {} : { initialModel: input.model }),
|
|
creationProvenance: "tracked-subsession",
|
|
});
|
|
const parentSessionFile = nonEmptyString(input.parentSessionFile);
|
|
const link: TrackedSubsessionLink = {
|
|
parentSessionId: input.parentSessionId,
|
|
childSessionId: created.id,
|
|
...(created.path === "" ? {} : { childSessionFile: created.path }),
|
|
...(parentSessionFile === undefined ? {} : { parentSessionFile }),
|
|
cwd: decision.cwd,
|
|
};
|
|
await this.registerVerifiedSubsession(link);
|
|
this.persistSubsessionLink(link);
|
|
this.persistSubsessionChildMarker(input.parentSessionId, created.id);
|
|
await this.prompt(created.id, input.prompt);
|
|
this.logger.info(
|
|
{ parentSessionId: input.parentSessionId, sessionId: created.id, cwd: decision.cwd, promptLength: input.prompt.length },
|
|
"spawn_subsession started a tracked child session",
|
|
);
|
|
return { sessionId: created.id, cwd: decision.cwd };
|
|
}
|
|
|
|
/** Summaries of the tracked subsessions spawned by `parentSessionId`. */
|
|
async listSubsessions(parentSessionId: string, parentSessionFile?: string): Promise<SubsessionSummary[]> {
|
|
const parentFile = nonEmptyString(parentSessionFile);
|
|
await this.hydrateSubsessionsForParent(parentSessionId, parentFile);
|
|
const childIds = this.subsessionChildren.get(parentSessionId);
|
|
if (childIds === undefined) return [];
|
|
const authorizedChildIds = [...childIds].filter((childId) => this.subsessionLinkBelongsToParent(parentSessionId, parentFile, childId));
|
|
return Promise.all(authorizedChildIds.map(async (childId) => ({ sessionId: childId, ...(await this.subsessionSummaryFields(childId)) })));
|
|
}
|
|
|
|
/** Status and final result of a subsession, scoped to the caller's children. */
|
|
async checkSubsession(parentSessionId: string, sessionId: string, parentSessionFile?: string): Promise<SubsessionCheckResult> {
|
|
const session = await this.openSubsession(parentSessionId, sessionId, parentSessionFile);
|
|
const messages = historyMessages(session);
|
|
return {
|
|
sessionId,
|
|
cwd: session.sessionManager.getCwd(),
|
|
status: this.subsessionStatus(session),
|
|
finalText: finalAssistantText(messages),
|
|
messageCount: messages.length,
|
|
};
|
|
}
|
|
|
|
/** Filtered, paginated transcript of a subsession, scoped to the caller's children. */
|
|
async readSubsession(parentSessionId: string, sessionId: string, query: SubsessionReadQuery, parentSessionFile?: string): Promise<SubsessionReadResult> {
|
|
const session = await this.openSubsession(parentSessionId, sessionId, parentSessionFile);
|
|
const view = buildTranscriptView(historyMessages(session), query);
|
|
return {
|
|
sessionId,
|
|
cwd: session.sessionManager.getCwd(),
|
|
status: this.subsessionStatus(session),
|
|
...view,
|
|
};
|
|
}
|
|
|
|
/** Open a session after verifying it is one of the caller's tracked children. */
|
|
private async openSubsession(parentSessionId: string, sessionId: string, parentSessionFile?: string): Promise<PiAgentSession> {
|
|
const parentFile = nonEmptyString(parentSessionFile);
|
|
await this.hydrateSubsessionsForParent(parentSessionId, parentFile);
|
|
if (this.subsessionParents.get(sessionId) !== parentSessionId || !this.subsessionLinkBelongsToParent(parentSessionId, parentFile, sessionId)) {
|
|
throw new Error(`Session ${sessionId} is not one of your subsessions`);
|
|
}
|
|
return this.getOrOpenTrackedSubsession(sessionId);
|
|
}
|
|
|
|
private subsessionLinkBelongsToParent(parentSessionId: string, parentSessionFile: string | undefined, childSessionId: string): boolean {
|
|
const link = this.subsessionLinks.get(childSessionId);
|
|
if (link?.parentSessionId !== parentSessionId) return false;
|
|
return parentSessionFile === undefined || trackedLinkParentFileMatches(link, parentSessionFile);
|
|
}
|
|
|
|
private activeChildForSubsessionLink(link: TrackedSubsessionLink): ActiveSession<PiSessionRuntime> | undefined {
|
|
const active = this.active.get(link.childSessionId);
|
|
if (active === undefined) return undefined;
|
|
return activeSessionFileMatches(active, link.childSessionFile) ? active : undefined;
|
|
}
|
|
|
|
private activeParentForSubsessionLink(link: TrackedSubsessionLink): ActiveSession<PiSessionRuntime> | undefined {
|
|
const active = this.active.get(link.parentSessionId);
|
|
if (active === undefined) return undefined;
|
|
return activeSessionFileMatches(active, link.parentSessionFile) ? active : undefined;
|
|
}
|
|
|
|
private subsessionLinkForActiveChild(session: PiAgentSession): TrackedSubsessionLink | undefined {
|
|
const childId = session.sessionId;
|
|
const parentId = this.subsessionParents.get(childId);
|
|
const link = this.subsessionLinks.get(childId);
|
|
if (parentId === undefined || link?.parentSessionId !== parentId) return undefined;
|
|
return sessionFileMatches(session, link.childSessionFile) ? link : undefined;
|
|
}
|
|
|
|
private async registerVerifiedSubsession(link: TrackedSubsessionLink): Promise<void> {
|
|
const { childSessionId, parentSessionId } = link;
|
|
const previousParentId = this.subsessionParents.get(childSessionId);
|
|
if (previousParentId !== undefined && previousParentId !== parentSessionId) {
|
|
const previousChildren = this.subsessionChildren.get(previousParentId);
|
|
previousChildren?.delete(childSessionId);
|
|
if (previousChildren?.size === 0) this.subsessionChildren.delete(previousParentId);
|
|
}
|
|
|
|
this.subsessionParents.set(childSessionId, parentSessionId);
|
|
const children = this.subsessionChildren.get(parentSessionId) ?? new Set<string>();
|
|
children.add(childSessionId);
|
|
this.subsessionChildren.set(parentSessionId, children);
|
|
|
|
this.subsessionLinks.set(childSessionId, link);
|
|
if (!this.subsessionNotifyArmed.has(childSessionId)) this.subsessionNotifyArmed.set(childSessionId, false);
|
|
|
|
const cwd = this.cwdForVerifiedSubsession(link);
|
|
await this.publishUnreadMutations(this.unreadStore.excludeSession(childSessionId, cwd));
|
|
}
|
|
|
|
private cwdForVerifiedSubsession(link: TrackedSubsessionLink): string {
|
|
const activeCwd = this.activeChildForSubsessionLink(link)?.runtime.session.sessionManager.getCwd();
|
|
const linkedCwd = nonEmptyString(activeCwd) ?? nonEmptyString(link.cwd);
|
|
if (linkedCwd !== undefined) return canonicalizeStoredCwd(linkedCwd);
|
|
|
|
const childSessionFile = link.childSessionFile;
|
|
if (childSessionFile !== undefined) {
|
|
try {
|
|
return canonicalizeStoredCwd(this.sessionManager.open(childSessionFile).getCwd());
|
|
} catch (error: unknown) {
|
|
throw new Error("Could not resolve cwd for verified tracked sub-session", { cause: error });
|
|
}
|
|
}
|
|
throw new Error("Could not resolve cwd for verified tracked sub-session");
|
|
}
|
|
|
|
private unregisterSubsession(childSessionId: string): void {
|
|
const parentSessionId = this.subsessionParents.get(childSessionId);
|
|
this.subsessionParents.delete(childSessionId);
|
|
this.subsessionLinks.delete(childSessionId);
|
|
this.subsessionNotifyArmed.delete(childSessionId);
|
|
if (parentSessionId === undefined) return;
|
|
const children = this.subsessionChildren.get(parentSessionId);
|
|
children?.delete(childSessionId);
|
|
if (children?.size === 0) this.subsessionChildren.delete(parentSessionId);
|
|
}
|
|
|
|
private persistSubsessionLink(link: TrackedSubsessionLink): void {
|
|
const parent = this.activeParentForSubsessionLink(link)?.runtime.session;
|
|
if (parent === undefined) return;
|
|
if (parent.sessionManager.appendCustomEntry === undefined) return;
|
|
try {
|
|
parent.sessionManager.appendCustomEntry(SUBSESSION_LINK_CUSTOM_TYPE, persistedParentSubsessionLinkData(link));
|
|
} catch (error: unknown) {
|
|
this.logger.info(
|
|
{ parentSessionId: link.parentSessionId, sessionId: link.childSessionId, error: error instanceof Error ? error.message : String(error) },
|
|
"failed to persist subsession link",
|
|
);
|
|
}
|
|
}
|
|
|
|
private persistSubsessionChildMarker(parentSessionId: string, childSessionId: string): void {
|
|
const child = this.active.get(childSessionId)?.runtime.session;
|
|
if (child === undefined) return;
|
|
if (child.sessionManager.appendCustomEntry === undefined) return;
|
|
try {
|
|
child.sessionManager.appendCustomEntry(SUBSESSION_CHILD_LINK_CUSTOM_TYPE, persistedChildSubsessionLinkData(parentSessionId, childSessionId));
|
|
} catch (error: unknown) {
|
|
this.logger.info(
|
|
{ parentSessionId, sessionId: childSessionId, error: error instanceof Error ? error.message : String(error) },
|
|
"failed to persist subsession child marker",
|
|
);
|
|
}
|
|
}
|
|
|
|
private async hydrateSubsessionsForParent(parentSessionId: string, parentSessionFile?: string): Promise<void> {
|
|
const hydrationKey = subsessionHydratedParentKey(parentSessionId, parentSessionFile);
|
|
if (this.subsessionHydratedParents.has(hydrationKey)) return;
|
|
|
|
const activeParent = this.active.get(parentSessionId);
|
|
if (activeParent !== undefined && (parentSessionFile === undefined || activeSessionFileMatches(activeParent, parentSessionFile))) {
|
|
const activeParentFile = nonEmptyString(activeParent.runtime.session.sessionFile);
|
|
const complete = await this.registerPersistedSubsessionLinks(
|
|
parentSessionId,
|
|
activeParent.runtime.session.sessionManager,
|
|
activeParentFile,
|
|
);
|
|
if (complete) this.subsessionHydratedParents.add(hydrationKey);
|
|
return;
|
|
}
|
|
|
|
if (parentSessionFile === undefined) return;
|
|
if ((await readSessionHeaderSummary(parentSessionFile))?.id !== parentSessionId) return;
|
|
|
|
let parentManager: PiSessionManager;
|
|
try {
|
|
parentManager = this.sessionManager.open(parentSessionFile);
|
|
} catch {
|
|
return;
|
|
}
|
|
const complete = await this.registerPersistedSubsessionLinks(parentSessionId, parentManager, parentSessionFile);
|
|
if (complete) this.subsessionHydratedParents.add(hydrationKey);
|
|
}
|
|
|
|
private async registerPersistedSubsessionLinks(parentSessionId: string, parentManager: PiSessionManager, parentSessionFile: string | undefined): Promise<boolean> {
|
|
// Parent custom links are the authoritative recovery record: verify the
|
|
// exact live child file/header before tracking. Do not negatively cache a
|
|
// scan while a candidate child is temporarily unavailable.
|
|
const entries = parentManager.getEntries?.() ?? parentManager.getBranch();
|
|
let complete = true;
|
|
for (const entry of entries) {
|
|
const link = parsePersistedParentSubsessionLink(entry);
|
|
if (link?.spawnedBySessionId !== parentSessionId) continue;
|
|
const verified = await this.verifiedSubsessionLinkFromParentLink(parentSessionId, parentSessionFile, link);
|
|
if (verified === undefined) {
|
|
complete = false;
|
|
continue;
|
|
}
|
|
await this.registerVerifiedSubsession(verified);
|
|
}
|
|
return complete;
|
|
}
|
|
|
|
private async verifiedSubsessionLinkFromParentLink(parentSessionId: string, parentSessionFile: string | undefined, link: PersistedParentSubsessionLink): Promise<TrackedSubsessionLink | undefined> {
|
|
if (parentSessionFile === undefined) return undefined;
|
|
if (link.spawnedBySessionId !== parentSessionId) return undefined;
|
|
if (!(await this.parentLinkHasValidChildTarget(parentSessionFile, link))) return undefined;
|
|
return trackedSubsessionLinkFromParentLink(parentSessionId, link, parentSessionFile);
|
|
}
|
|
|
|
private async parentLinkHasValidChildTarget(parentSessionFile: string, link: PersistedParentSubsessionLink): Promise<boolean> {
|
|
return link.spawnedSessionFile !== undefined
|
|
&& await sessionFileHeaderMatches(link.spawnedSessionFile, { sessionId: link.spawnedSessionId, parentSessionFile });
|
|
}
|
|
|
|
private async recoverSubsessionTrackingForOpenedSession(session: PiAgentSession): Promise<void> {
|
|
const link = await this.verifiedSubsessionLinkFromOpenedChild(session);
|
|
if (link === undefined) return;
|
|
await this.registerVerifiedSubsession(link);
|
|
}
|
|
|
|
private verifiedSubsessionLinkFromOpenedChild(session: PiAgentSession): Promise<TrackedSubsessionLink | undefined> {
|
|
return verifiedTrackedSubsessionLink(this.sessionManager, {
|
|
sessionId: session.sessionId,
|
|
sessionFile: session.sessionFile,
|
|
sessionManager: session.sessionManager,
|
|
cwd: session.sessionManager.getCwd(),
|
|
});
|
|
}
|
|
|
|
private async getOrOpenTrackedSubsession(sessionId: string): Promise<PiAgentSession> {
|
|
const link = this.subsessionLinks.get(sessionId);
|
|
if (link === undefined) throw new Error("Session not found");
|
|
|
|
const active = this.activeChildForSubsessionLink(link);
|
|
if (active !== undefined) return active.runtime.session;
|
|
|
|
if (link.childSessionFile !== undefined) {
|
|
if (!(await sessionFileHeaderMatches(link.childSessionFile, { sessionId, parentSessionFile: link.parentSessionFile }))) throw new Error("Session not found");
|
|
const sessionManager = this.sessionManager.open(link.childSessionFile);
|
|
return (await this.create(sessionManager, link.cwd ?? sessionManager.getCwd())).runtime.session;
|
|
}
|
|
|
|
throw new Error("Session not found");
|
|
}
|
|
|
|
private async subsessionSummaryFields(childSessionId: string): Promise<{ cwd: string; status: SubsessionStatus }> {
|
|
const link = this.subsessionLinks.get(childSessionId);
|
|
const active = link === undefined ? undefined : this.activeChildForSubsessionLink(link);
|
|
if (active !== undefined) {
|
|
return { cwd: active.runtime.cwd, status: this.subsessionStatus(active.runtime.session) };
|
|
}
|
|
if (link?.childSessionFile !== undefined && (await sessionFileHeaderMatches(link.childSessionFile, { sessionId: childSessionId, parentSessionFile: link.parentSessionFile }))) {
|
|
return { cwd: link.cwd ?? "", status: "idle" };
|
|
}
|
|
if (link?.cwd !== undefined) return { cwd: link.cwd, status: "unknown" };
|
|
return { cwd: "", status: "unknown" };
|
|
}
|
|
|
|
private subsessionStatus(session: PiAgentSession): SubsessionStatus {
|
|
if (this.hasActiveWork(session)) return "working";
|
|
if (this.activities.get(session.sessionId)?.phase === "error") return "error";
|
|
return "idle";
|
|
}
|
|
|
|
private workingSubsessionIds(parentSessionId: string): string[] {
|
|
const childIds = this.subsessionChildren.get(parentSessionId);
|
|
if (childIds === undefined) return [];
|
|
return [...childIds].filter((childId) => {
|
|
const link = this.subsessionLinks.get(childId);
|
|
const active = link === undefined ? undefined : this.activeChildForSubsessionLink(link);
|
|
return active !== undefined && this.hasActiveWork(active.runtime.session);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Drive parent notifications from a tracked child's status. Arms a pending
|
|
* notification while the child is working, and when it stops fires a single
|
|
* follow-up message to the parent via {@link prompt} (which queues if the
|
|
* parent is busy and delivers immediately when it is idle).
|
|
*/
|
|
private updateSubsessionTracking(session: PiAgentSession): void {
|
|
const link = this.subsessionLinkForActiveChild(session);
|
|
if (link === undefined) return;
|
|
const childId = link.childSessionId;
|
|
if (this.hasActiveWork(session)) {
|
|
this.subsessionNotifyArmed.set(childId, true);
|
|
return;
|
|
}
|
|
if (this.subsessionNotifyArmed.get(childId) !== true) return;
|
|
this.subsessionNotifyArmed.set(childId, false);
|
|
const status: SubsessionStatus = this.activities.get(childId)?.phase === "error" ? "error" : "idle";
|
|
const finalText = finalAssistantText(historyMessages(session));
|
|
const outputSection = formatSubsessionNotificationOutput(childId, finalText);
|
|
const workingIds = this.workingSubsessionIds(link.parentSessionId);
|
|
const next = workingIds.length === 0
|
|
? "No other tracked subsessions are working."
|
|
: `Still working: ${workingIds.join(", ")}. Continue working, or call yield_to_subsessions alone and last at the next join point. Further completion notices arrive automatically; do not poll.`;
|
|
const text = `Subsession ${childId} stopped working (${status}).\n${next}\n\n${outputSection}`;
|
|
void this.notifyParentOfSubsession(link.parentSessionId, childId, text);
|
|
}
|
|
|
|
private async getOrOpenParentForSubsession(parentSessionId: string, childSessionId: string): Promise<PiAgentSession> {
|
|
const link = this.subsessionLinks.get(childSessionId);
|
|
if (link?.parentSessionId !== parentSessionId) throw new Error(`Parent session ${parentSessionId} is not available for subsession notification`);
|
|
|
|
const active = this.activeParentForSubsessionLink(link);
|
|
if (active !== undefined) return active.runtime.session;
|
|
|
|
const parentSessionFile = link.parentSessionFile;
|
|
if (parentSessionFile === undefined) throw new Error(`Parent session ${parentSessionId} is not available for subsession notification`);
|
|
if ((await readSessionHeaderSummary(parentSessionFile))?.id !== parentSessionId) {
|
|
throw new Error(`Parent session ${parentSessionId} is not available for subsession notification`);
|
|
}
|
|
const sessionManager = this.sessionManager.open(parentSessionFile);
|
|
return (await this.create(sessionManager, sessionManager.getCwd())).runtime.session;
|
|
}
|
|
|
|
/**
|
|
* Deliver a subsession-completion notice to the parent as a system-authored
|
|
* custom message rather than a user message, so it is not attributed to the
|
|
* human in the transcript. It still wakes an idle parent (`triggerTurn`) and
|
|
* queues behind in-flight work (`deliverAs: "followUp"`), preserving the
|
|
* established "queue if busy, send and act if idle" behavior.
|
|
*/
|
|
private async notifyParentOfSubsession(parentId: string, childId: string, text: string): Promise<void> {
|
|
try {
|
|
const session = await this.getOrOpenParentForSubsession(parentId, childId);
|
|
if (this.treeNavigations.has(session)) {
|
|
const pending = this.deferredSubsessionNotifications.get(session) ?? [];
|
|
pending.push({ parentId, childId, text });
|
|
this.deferredSubsessionNotifications.set(session, pending);
|
|
return;
|
|
}
|
|
await this.deliverSubsessionNotification(session, { parentId, childId, text });
|
|
} catch (error: unknown) {
|
|
this.logSubsessionNotificationFailure(parentId, childId, error);
|
|
}
|
|
}
|
|
|
|
private async deliverSubsessionNotification(session: PiAgentSession, notification: DeferredSubsessionNotification): Promise<void> {
|
|
await this.runSessionEntryMutation(session, "deliver a subsession notification", () => session.sendCustomMessage(
|
|
{ customType: SUBSESSION_NOTIFICATION_CUSTOM_TYPE, content: notification.text, display: true, details: { sessionId: notification.childId } },
|
|
{ triggerTurn: true, deliverAs: "followUp" },
|
|
));
|
|
this.publishStatus(session);
|
|
}
|
|
|
|
private logSubsessionNotificationFailure(parentId: string, childId: string, error: unknown): void {
|
|
this.logger.info(
|
|
{ parentSessionId: parentId, sessionId: childId, error: error instanceof Error ? error.message : String(error) },
|
|
"failed to notify parent of subsession completion",
|
|
);
|
|
}
|
|
|
|
async messages(ref: PiSessionLookup, page?: { before?: number; limit?: number }): Promise<unknown[] | ClientMessagePage> {
|
|
const session = await this.getOrOpen(ref);
|
|
return pageMessagesAtSafeBoundary(historyMessages(session), page);
|
|
}
|
|
|
|
async status(ref: PiSessionLookup): Promise<ClientSessionStatus> {
|
|
return this.statusFromSession(await this.getOrOpen(ref));
|
|
}
|
|
|
|
/**
|
|
* Join-time snapshot of the in-flight assistant stream. The `seq` watermark and
|
|
* the partial are read together in one synchronous tick (no await between the
|
|
* `currentSeq` read and the `state.streamingMessage` read) so a joining client
|
|
* can seed the partial and then apply only buffered live events with
|
|
* `seq > snapshot.seq`. The partial is browser-projected to strip thinking
|
|
* signatures; it is `null` when no assistant message is mid-stream.
|
|
*/
|
|
async streamSnapshot(ref: PiSessionLookup): Promise<SessionStreamSnapshot> {
|
|
const session = await this.getOrOpen(ref);
|
|
// Single consistent tick: capture the watermark and the partial together so
|
|
// the seq matches the partial the client seeds against.
|
|
const seq = this.events.currentSeq(session.sessionId);
|
|
const streamingMessage = session.state.streamingMessage;
|
|
const partial = streamingMessage === undefined || streamingMessage === null
|
|
? null
|
|
: projectBrowserMessage(streamingMessage);
|
|
return { seq, partial };
|
|
}
|
|
|
|
async availableModels(ref: PiSessionLookup): Promise<ClientSessionModel[]> {
|
|
const session = await this.getOrOpen(ref);
|
|
await session.modelRuntime.reloadConfig();
|
|
const models = session.scopedModels.length > 0
|
|
? session.scopedModels.map((scoped) => scoped.model)
|
|
: session.modelRuntime.getAvailableSnapshot();
|
|
return models.map(modelToClientModel);
|
|
}
|
|
|
|
async setModel(ref: PiSessionLookup, provider: string, modelId: string): Promise<ClientSessionStatus> {
|
|
await this.assertWritable(ref);
|
|
const session = await this.getOrOpen(ref);
|
|
this.assertTreeNavigationInactive(session, "change models");
|
|
await session.modelRuntime.reloadConfig();
|
|
this.assertTreeNavigationInactive(session, "change models");
|
|
const candidates = session.scopedModels.length > 0
|
|
? session.scopedModels.map((scoped) => scoped.model)
|
|
: session.modelRuntime.getAvailableSnapshot();
|
|
const model = candidates.find((candidate) => candidate.provider === provider && candidate.id === modelId)
|
|
?? session.modelRuntime.getModel(provider, modelId);
|
|
if (model === undefined) throw new Error(`Model not found: ${provider}/${modelId}`);
|
|
await this.runSessionEntryMutation(session, "change models", () => session.setModel(model));
|
|
this.publishActivity(session, `model: ${model.id}`, "idle", model.provider);
|
|
this.publishStatus(session);
|
|
return this.statusFromSession(session);
|
|
}
|
|
|
|
async cycleModel(ref: PiSessionLookup, direction: "forward" | "backward"): Promise<ClientSessionStatus> {
|
|
await this.assertWritable(ref);
|
|
const session = await this.getOrOpen(ref);
|
|
const result = await this.runSessionEntryMutation(session, "change models", () => session.cycleModel(direction));
|
|
if (result === undefined) throw new Error(session.scopedModels.length > 0 ? "Only one model in scope" : "Only one model available");
|
|
this.publishActivity(session, `model: ${result.model.id}`, "idle", result.model.provider);
|
|
this.publishStatus(session);
|
|
return this.statusFromSession(session);
|
|
}
|
|
|
|
async availableThinkingLevels(ref: PiSessionLookup): Promise<ClientThinkingLevel[]> {
|
|
const session = await this.getOrOpen(ref);
|
|
return session.getAvailableThinkingLevels();
|
|
}
|
|
|
|
async setThinkingLevel(ref: PiSessionLookup, level: string): Promise<ClientSessionStatus> {
|
|
await this.assertWritable(ref);
|
|
const session = await this.getOrOpen(ref);
|
|
this.assertTreeNavigationInactive(session, "change the thinking level");
|
|
// pi owns the valid set; validate against the session's live levels rather
|
|
// than a hardcoded union so this stays correct if pi changes the set.
|
|
const available = session.getAvailableThinkingLevels();
|
|
const match = available.find((candidate) => candidate === level);
|
|
if (match === undefined) throw new Error(`Invalid thinking level: ${level}`);
|
|
session.setThinkingLevel(match);
|
|
this.publishActivity(session, `thinking: ${session.thinkingLevel}`, "idle");
|
|
this.publishStatus(session);
|
|
return this.statusFromSession(session);
|
|
}
|
|
|
|
async cycleThinkingLevel(ref: PiSessionLookup): Promise<ClientSessionStatus> {
|
|
await this.assertWritable(ref);
|
|
const session = await this.getOrOpen(ref);
|
|
this.assertTreeNavigationInactive(session, "change the thinking level");
|
|
const level = session.cycleThinkingLevel();
|
|
if (level === undefined) throw new Error("Current model does not support thinking");
|
|
this.publishActivity(session, `thinking: ${level}`, "idle");
|
|
this.publishStatus(session);
|
|
return this.statusFromSession(session);
|
|
}
|
|
|
|
async commands(ref: PiSessionLookup): Promise<ClientCommand[]> {
|
|
const session = await this.getOrOpen(ref);
|
|
const commands: ClientCommand[] = [...BUILTIN_COMMANDS];
|
|
for (const command of session.extensionRunner.getRegisteredCommands()) {
|
|
commands.push({ name: command.invocationName, ...(command.description === undefined ? {} : { description: command.description }), source: "extension" });
|
|
}
|
|
for (const template of session.promptTemplates) {
|
|
commands.push({ name: template.name, ...(template.description === undefined ? {} : { description: template.description }), source: "prompt" });
|
|
}
|
|
for (const skill of session.resourceLoader.getSkills().skills) {
|
|
commands.push({ name: `skill:${skill.name}`, ...(skill.description === undefined ? {} : { description: skill.description }), source: "skill" });
|
|
}
|
|
return commands.sort((a, b) => a.name.localeCompare(b.name));
|
|
}
|
|
|
|
async prompt(ref: PiSessionLookup, text: unknown, streamingBehavior?: unknown, attachments?: unknown, options?: { echoUserMessage?: boolean }): Promise<void> {
|
|
const promptText = requirePromptText(text);
|
|
// Command-forwarded prompts (e.g. /skill:*) are expanded by the agent, which
|
|
// streams the canonical message back. The client doesn't render the raw
|
|
// command text, so the server must not echo it either, or it would show up
|
|
// as a transient line that vanishes on reload.
|
|
const echoUserMessage = options?.echoUserMessage !== false;
|
|
const requestedBehavior = parsePromptStreamingBehavior(streamingBehavior);
|
|
const parsedAttachments = parsePromptAttachments(attachments, { enforceInlineSizeLimit: false });
|
|
const images = (await attachmentsToInlineImages(parsedAttachments)).map((entry) => entry.image);
|
|
await this.assertWritable(ref);
|
|
const session = await this.getOrOpen(ref);
|
|
this.assertTreeNavigationInactive(session, "send a prompt");
|
|
this.maybeGenerateSessionName(session, promptText);
|
|
const isQueued = session.isStreaming || session.isCompacting;
|
|
const behavior = isQueued ? requestedBehavior ?? "followUp" : undefined;
|
|
if (isQueued && images.length === 0 && this.hasQueuedMessageText(session, promptText)) {
|
|
this.publishActivity(session, "duplicate queued message ignored", "active");
|
|
this.publishStatus(session);
|
|
return;
|
|
}
|
|
if (session.isCompacting) {
|
|
this.enqueuePromptDuringCompaction(session, promptText, behavior ?? "followUp", images, echoUserMessage);
|
|
return;
|
|
}
|
|
void this.submitPrompt(session, promptText, behavior, images, echoUserMessage);
|
|
}
|
|
|
|
private submitPrompt(session: PiAgentSession, text: string, behavior: QueuedPromptKind | undefined, images: ImageContent[] = [], echoUserMessage = true): Promise<void> {
|
|
this.publishActivity(session, behavior === "steer" ? "steering queued" : behavior === "followUp" ? "message queued" : "prompt accepted", "active");
|
|
if (behavior === undefined && echoUserMessage) this.events.publish(session.sessionId, { type: "message.append", message: userMessage(text, images) });
|
|
const promptOptions = buildPromptOptions(behavior, images);
|
|
const promptPromise = this.runSessionEntryMutation(session, "send a prompt", () => session.prompt(text, promptOptions)).catch((error: unknown) => {
|
|
const message = error instanceof Error ? error.message : String(error);
|
|
this.publishActivity(session, "error", "error", message);
|
|
this.events.publish(session.sessionId, { type: "session.error", message });
|
|
});
|
|
void promptPromise;
|
|
return promptPromise;
|
|
}
|
|
|
|
private enqueuePromptDuringCompaction(session: PiAgentSession, text: string, kind: QueuedPromptKind, images: ImageContent[] = [], echoUserMessage = true): void {
|
|
const queue = this.compactionPromptQueues.get(session.sessionId) ?? [];
|
|
queue.push({ kind, text, ...(images.length > 0 ? { images } : {}), ...(echoUserMessage ? {} : { echoUserMessage: false }) });
|
|
this.compactionPromptQueues.set(session.sessionId, queue);
|
|
this.publishActivity(session, "message queued during compaction", "active");
|
|
this.publishStatus(session);
|
|
}
|
|
|
|
async saveAttachments(ref: PiSessionLookup, attachments: unknown, folder?: string): Promise<SavedPromptAttachment[]> {
|
|
const parsed = parsePromptAttachments(attachments, { enforceInlineSizeLimit: false, allowFileAttachments: true });
|
|
if (parsed.length === 0) return [];
|
|
await this.assertWritable(ref);
|
|
const active = await this.getActive(ref);
|
|
return saveAttachmentsToWorkspace(active.runtime.cwd, parsed, folder === undefined ? {} : { folder });
|
|
}
|
|
|
|
async shell(ref: PiSessionLookup, text: string): Promise<void> {
|
|
await this.assertWritable(ref);
|
|
const active = await this.getActive(ref);
|
|
const { session } = active.runtime;
|
|
this.assertTreeNavigationInactive(session, "run a shell command");
|
|
const isExcluded = text.startsWith("!!");
|
|
const command = (isExcluded ? text.slice(2) : text.slice(1)).trim();
|
|
if (!command) throw new Error("Usage: !<shell command>");
|
|
if (session.isBashRunning) throw new Error("A bash command is already running");
|
|
|
|
this.publishActivity(session, "running bash", "active", command);
|
|
this.events.publish(session.sessionId, { type: "shell.start", command, excludeFromContext: isExcluded });
|
|
void this.runSessionEntryMutation(session, "run a shell command", () => session.executeBash(command, (chunk) => {
|
|
this.events.publish(session.sessionId, { type: "shell.chunk", chunk });
|
|
this.publishActivity(session, "running bash", "active", command);
|
|
this.publishStatus(session);
|
|
}, { excludeFromContext: isExcluded })).then((result) => {
|
|
this.events.publish(session.sessionId, {
|
|
type: "shell.end",
|
|
output: result.output,
|
|
...(result.exitCode === undefined ? {} : { exitCode: result.exitCode }),
|
|
cancelled: result.cancelled,
|
|
truncated: result.truncated,
|
|
...(result.fullOutputPath === undefined ? {} : { fullOutputPath: result.fullOutputPath }),
|
|
});
|
|
this.publishActivity(session, "bash complete", result.exitCode === 0 ? "idle" : "error", command);
|
|
this.publishStatus(session);
|
|
}).catch((error: unknown) => {
|
|
const message = error instanceof Error ? error.message : String(error);
|
|
this.events.publish(session.sessionId, { type: "shell.end", output: message, isError: true });
|
|
this.events.publish(session.sessionId, { type: "session.error", message });
|
|
this.publishActivity(session, "bash failed", "error", message);
|
|
this.publishStatus(session);
|
|
});
|
|
}
|
|
|
|
async runCommand(ref: PiSessionLookup, text: string): Promise<ClientCommandResult> {
|
|
await this.assertWritable(ref);
|
|
const active = await this.getActive(ref);
|
|
return this.commandService.run(active.runtime.session.sessionId, text);
|
|
}
|
|
|
|
async respondToCommand(ref: PiSessionLookup, requestId: string, value: string): Promise<ClientCommandResult> {
|
|
await this.assertWritable(ref);
|
|
const active = await this.getActive(ref);
|
|
return this.commandService.respond(active.runtime.session.sessionId, requestId, value);
|
|
}
|
|
|
|
async navigateTree(ref: PiSessionLookup, request: ClientSessionTreeNavigateRequest): Promise<ClientSessionTreeNavigateResult> {
|
|
if (request.targetId.trim() === "") throw new Error("Session tree target is required");
|
|
if (this.isTreeExclusiveSessionIdentityActive(sessionIdFromLookup(ref))) {
|
|
throw new Error("Stop current session activity before navigating the session tree");
|
|
}
|
|
await this.assertWritable(ref);
|
|
const options = sessionTreeNavigationOptions(request);
|
|
const session = await this.getOrOpen(ref);
|
|
if (typeof session.navigateTree !== "function") throw new Error("Session tree navigation is not supported by this Pi runtime");
|
|
if (this.hasActiveWork(session)) throw new Error("Stop current session activity before navigating the session tree");
|
|
|
|
// Acquire synchronously after the active-work check. No leaf-producing work
|
|
// may enter this runtime until Pi's potentially asynchronous summary settles.
|
|
this.treeNavigations.add(session);
|
|
try {
|
|
if (session.sessionManager.getLeafId() !== request.expectedLeafId) {
|
|
throw new Error("The session changed since /tree was opened. Reopen /tree and try again.");
|
|
}
|
|
|
|
this.publishActivity(session, options.summarize ? "summarizing branch" : "navigating session tree", "active");
|
|
this.publishStatus(session);
|
|
const result = await session.navigateTree(request.targetId, options);
|
|
if (result.cancelled) {
|
|
if (this.isCurrentActiveSession(session)) {
|
|
this.publishActivity(session, result.aborted === true ? "branch summary aborted" : "tree navigation cancelled", "idle");
|
|
}
|
|
return { cancelled: true, ...(result.aborted === undefined ? {} : { aborted: result.aborted }) };
|
|
}
|
|
|
|
if (this.isCurrentActiveSession(session)) this.publishActivity(session, "session tree navigated", "idle");
|
|
return { cancelled: false, ...(result.editorText === undefined ? {} : { editorText: result.editorText }) };
|
|
} catch (error: unknown) {
|
|
const message = error instanceof Error ? error.message : String(error);
|
|
if (this.isCurrentActiveSession(session)) {
|
|
this.publishActivity(session, "tree navigation failed", "error", message);
|
|
this.events.publish(session.sessionId, { type: "session.error", message });
|
|
}
|
|
throw error;
|
|
} finally {
|
|
this.treeNavigations.delete(session);
|
|
if (this.isCurrentActiveSession(session)) {
|
|
this.flushDeferredTreeNavigationWork(session);
|
|
this.publishStatus(session);
|
|
} else {
|
|
this.deferredGeneratedSessionNames.delete(session);
|
|
this.deferredSubsessionNotifications.delete(session);
|
|
}
|
|
}
|
|
}
|
|
|
|
private async reloadSessionRuntime(session: PiAgentSession): Promise<void> {
|
|
if (this.hasActiveWork(session)) throw new Error("Stop current session activity before reloading");
|
|
await this.runTreeExclusiveOperation(
|
|
[{ sessionId: session.sessionId, session }],
|
|
"Stop current session activity before reloading",
|
|
async () => {
|
|
this.publishActivity(session, "reloading resources", "active");
|
|
const priorGeneration = this.notificationGenerationBySession.get(session);
|
|
let candidateGeneration: SessionNotificationGeneration | undefined;
|
|
try {
|
|
await session.reload(priorGeneration === undefined ? undefined : {
|
|
beforeSessionStart: () => {
|
|
candidateGeneration = this.notificationStore.beginReplacement(priorGeneration, notificationIdentityForSession(session));
|
|
this.notificationGenerationBySession.set(session, candidateGeneration);
|
|
this.replaceSessionNotificationContext(session, candidateGeneration);
|
|
},
|
|
});
|
|
if (candidateGeneration !== undefined) {
|
|
this.publishNotificationMutations(this.notificationStore.commitReplacement(candidateGeneration));
|
|
}
|
|
this.publishActivity(session, "resources reloaded", "idle");
|
|
this.publishStatus(session);
|
|
} catch (error: unknown) {
|
|
if (candidateGeneration !== undefined) {
|
|
this.publishNotificationMutations(this.notificationStore.abortReplacement(candidateGeneration, "candidate"));
|
|
this.notificationGenerationBySession.set(session, candidateGeneration);
|
|
}
|
|
const message = error instanceof Error ? error.message : String(error);
|
|
this.publishActivity(session, "reload failed", "error", message);
|
|
this.events.publish(session.sessionId, { type: "session.error", message });
|
|
this.publishStatus(session);
|
|
throw error;
|
|
}
|
|
},
|
|
);
|
|
}
|
|
|
|
async archive(ref: PiSessionLookup): Promise<void> {
|
|
const session = await this.getOrOpen(ref);
|
|
if (this.hasActiveWork(session)) throw new Error("Stop current session activity before archiving");
|
|
await this.runTreeExclusiveOperation(
|
|
[{ sessionId: session.sessionId, session }],
|
|
"Stop current session activity before archiving",
|
|
async () => {
|
|
const archiveInput = await this.archiveInputForSession(session);
|
|
await this.closeActive(session.sessionId, { kind: "clear", reason: "archive" });
|
|
await this.archiveStore.archive(archiveInput);
|
|
await this.forgetUnreadSessions([archiveInput]);
|
|
},
|
|
);
|
|
}
|
|
|
|
async archiveMany(refs: readonly SessionBulkMutationRef[]): Promise<SessionBulkArchiveResponse> {
|
|
const uniqueRefs = uniqueBulkSessionRefs(refs);
|
|
const [archivedRecords, sessionContext] = await Promise.all([
|
|
this.archiveStore.list(),
|
|
this.bulkSessionLookupContext(uniqueRefs),
|
|
]);
|
|
const failures: SessionBulkFailure[] = [];
|
|
const alreadyArchivedSessionIds: string[] = [];
|
|
const unreadArchivedIdentities: { sessionId: string; cwd: string }[] = [];
|
|
const planItems: BulkArchivePlanItem[] = [];
|
|
|
|
for (const ref of uniqueRefs) {
|
|
const archived = findArchivedRecordForBulkRef(archivedRecords, ref);
|
|
if (archived !== undefined) {
|
|
this.publishNotificationMutations(this.notificationStore.clearSession(archived.sessionId, "archive"));
|
|
alreadyArchivedSessionIds.push(archived.sessionId);
|
|
unreadArchivedIdentities.push(archived);
|
|
continue;
|
|
}
|
|
|
|
const active = this.activeForLookup(bulkRefToLookup(ref));
|
|
const listed = findListedSessionForBulkRef(sessionContext, ref);
|
|
const resolvedSessionId = active?.runtime.session.sessionId ?? listed?.id ?? ref.id;
|
|
if (active !== undefined && this.hasActiveWork(active.runtime.session)) {
|
|
failures.push({ sessionId: resolvedSessionId, error: "Stop current session activity before archiving" });
|
|
continue;
|
|
}
|
|
|
|
try {
|
|
if (listed !== undefined) {
|
|
planItems.push({ input: archiveInputFromListEntry(listed) });
|
|
} else if (active !== undefined) {
|
|
planItems.push({ input: archiveInputFromActiveSession(active.runtime.session) });
|
|
} else {
|
|
failures.push({ sessionId: ref.id, error: "Session not found" });
|
|
}
|
|
} catch (error: unknown) {
|
|
failures.push({ sessionId: resolvedSessionId, error: errorMessage(error) });
|
|
}
|
|
}
|
|
|
|
const readyPlanItems: { input: ArchiveSessionInput; active?: ActiveSession<PiSessionRuntime> }[] = [];
|
|
for (const item of planItems) {
|
|
const active = this.activeForLookup({ id: item.input.sessionId, cwd: item.input.cwd });
|
|
if (active !== undefined && this.hasActiveWork(active.runtime.session)) {
|
|
failures.push({ sessionId: item.input.sessionId, error: "Stop current session activity before archiving" });
|
|
continue;
|
|
}
|
|
readyPlanItems.push(active === undefined ? item : { ...item, active });
|
|
}
|
|
|
|
const readyInputs: ArchiveSessionInput[] = [];
|
|
const archivedSessionIds = [...alreadyArchivedSessionIds];
|
|
await this.runTreeExclusiveOperation(
|
|
readyPlanItems.map(({ input, active }) => ({
|
|
sessionId: input.sessionId,
|
|
...(active === undefined ? {} : { session: active.runtime.session, runtime: active.runtime }),
|
|
})),
|
|
"Stop current session activity before archiving",
|
|
async () => {
|
|
for (const item of readyPlanItems) {
|
|
try {
|
|
await this.closeActive(item.input.sessionId, { kind: "clear", reason: "archive" });
|
|
readyInputs.push(item.input);
|
|
} catch (error: unknown) {
|
|
failures.push({ sessionId: item.input.sessionId, error: errorMessage(error) });
|
|
}
|
|
}
|
|
|
|
try {
|
|
const archived = await this.archiveStoreArchiveMany(readyInputs);
|
|
archivedSessionIds.push(...archived.map((record) => record.sessionId));
|
|
unreadArchivedIdentities.push(...archived);
|
|
} catch (error: unknown) {
|
|
for (const input of readyInputs) failures.push({ sessionId: input.sessionId, error: errorMessage(error) });
|
|
}
|
|
},
|
|
);
|
|
await this.forgetUnreadSessions(unreadArchivedIdentities);
|
|
|
|
return {
|
|
archived: true,
|
|
archivedSessionIds: uniqueStrings(archivedSessionIds),
|
|
failures,
|
|
generatedAt: new Date().toISOString(),
|
|
};
|
|
}
|
|
|
|
async archiveTree(ref: PiSessionLookup): Promise<ClientArchiveSessionsResponse> {
|
|
const session = await this.getOrOpen(ref);
|
|
const catalog = await this.workspaceArchiveCandidates(session.sessionManager.getCwd());
|
|
const root = findArchiveCandidateByIdOrPrefix(catalog, session.sessionId) ?? archiveCandidateFromActiveSession(session, false);
|
|
const plan = planSessionArchiveTree(root, catalog);
|
|
const busy = plan.targets.map((target) => target.activeSession).find((target) => target !== undefined && this.hasActiveWork(target));
|
|
if (busy !== undefined) throw new Error(`Stop current session activity before archiving ${sessionDisplayName(busy)}`);
|
|
|
|
const archiveInputs = plan.unarchivedTargets.map((target) => archiveInputFromCandidate(target));
|
|
await this.runTreeExclusiveOperation(
|
|
plan.unarchivedTargets.map((target) => ({
|
|
sessionId: target.id,
|
|
...(target.activeSession === undefined ? {} : { session: target.activeSession }),
|
|
})),
|
|
`Stop current session activity before archiving ${sessionDisplayName(session)}`,
|
|
async () => {
|
|
for (const target of plan.targets) {
|
|
if (target.archived) this.publishNotificationMutations(this.notificationStore.clearSession(target.id, "archive"));
|
|
}
|
|
for (const input of archiveInputs) await this.closeActive(input.sessionId, { kind: "clear", reason: "archive" });
|
|
await this.archiveStoreArchiveMany(archiveInputs);
|
|
},
|
|
);
|
|
await this.forgetUnreadSessions(plan.targets.map((target) => ({ sessionId: target.id, cwd: target.cwd })));
|
|
|
|
return {
|
|
archived: true,
|
|
sessionIds: archiveInputs.map((input) => input.sessionId),
|
|
archivedCount: archiveInputs.length,
|
|
skippedAlreadyArchivedCount: plan.skippedAlreadyArchivedCount,
|
|
};
|
|
}
|
|
|
|
async restore(ref: PiSessionLookup): Promise<void> {
|
|
const archived = await this.getArchived(ref);
|
|
if (archived === undefined) throw new Error("Session not found");
|
|
await this.closeActive(archived.sessionId, { kind: "clear", reason: "restore" });
|
|
await this.archiveStore.restore(archived.sessionId);
|
|
await this.forgetUnreadSessions([archived]);
|
|
}
|
|
|
|
async deleteArchived(ref: PiSessionLookup): Promise<void> {
|
|
const record = await this.getArchived(ref);
|
|
if (record === undefined) throw new Error("Archived session not found");
|
|
if (this.archiveStore.deleteArchived === undefined) throw new Error("Archive store does not support deletion");
|
|
|
|
await this.closeActive(record.sessionId, { kind: "clear", reason: "delete" });
|
|
if (record.archivePath === undefined) await this.ensureArchivedRecordMoved(record);
|
|
await this.archiveStore.deleteArchived(record.sessionId);
|
|
await this.forgetUnreadSessions([record]);
|
|
}
|
|
|
|
async deleteArchivedMany(refs: readonly SessionBulkMutationRef[]): Promise<SessionBulkDeleteArchivedResponse> {
|
|
if (this.archiveStore.deleteArchived === undefined && this.archiveStore.deleteArchivedMany === undefined) throw new Error("Archive store does not support deletion");
|
|
|
|
const uniqueRefs = uniqueBulkSessionRefs(refs);
|
|
const archivedRecords = await this.archiveStore.list();
|
|
const failures: SessionBulkFailure[] = [];
|
|
const planItems: BulkDeletePlanItem[] = [];
|
|
|
|
for (const ref of uniqueRefs) {
|
|
const record = findArchivedRecordForBulkRef(archivedRecords, ref);
|
|
if (record === undefined) {
|
|
failures.push({ sessionId: ref.id, error: "Archived session not found" });
|
|
continue;
|
|
}
|
|
|
|
const active = this.activeForLookup({ id: record.sessionId, cwd: record.cwd });
|
|
if (active !== undefined && this.hasActiveWork(active.runtime.session)) {
|
|
failures.push({ sessionId: record.sessionId, error: "Stop current session activity before deleting archived session" });
|
|
continue;
|
|
}
|
|
planItems.push({ record });
|
|
}
|
|
|
|
const readyRecords: ArchivedSessionRecord[] = [];
|
|
for (const item of planItems) {
|
|
try {
|
|
await this.closeActive(item.record.sessionId, { kind: "clear", reason: "delete" });
|
|
readyRecords.push(item.record);
|
|
} catch (error: unknown) {
|
|
failures.push({ sessionId: item.record.sessionId, error: errorMessage(error) });
|
|
}
|
|
}
|
|
|
|
const moveFailures = await this.moveLegacyArchivedRecordsForDelete(readyRecords);
|
|
failures.push(...moveFailures);
|
|
const moveFailureIds = new Set(moveFailures.map((failure) => failure.sessionId));
|
|
const deleteIds = readyRecords
|
|
.map((record) => record.sessionId)
|
|
.filter((sessionId) => !moveFailureIds.has(sessionId));
|
|
|
|
let deletedSessionIds: string[] = [];
|
|
try {
|
|
deletedSessionIds = await this.archiveStoreDeleteArchivedMany(deleteIds);
|
|
} catch (error: unknown) {
|
|
for (const sessionId of deleteIds) failures.push({ sessionId, error: errorMessage(error) });
|
|
}
|
|
const deletedIdSet = new Set(deletedSessionIds);
|
|
await this.forgetUnreadSessions(readyRecords.filter((record) => deletedIdSet.has(record.sessionId)));
|
|
|
|
return {
|
|
deleted: true,
|
|
deletedSessionIds,
|
|
failures,
|
|
generatedAt: new Date().toISOString(),
|
|
};
|
|
}
|
|
|
|
async reload(ref: PiSessionLookup): Promise<void> {
|
|
await this.assertWritable(ref);
|
|
const session = await this.getOrOpen(ref);
|
|
if (this.hasActiveWork(session)) throw new Error("Stop current session activity before reloading");
|
|
|
|
const reopenedSession = await this.runTreeExclusiveOperation(
|
|
[{ sessionId: session.sessionId, session }],
|
|
"Stop current session activity before reloading",
|
|
async () => {
|
|
const priorGeneration = this.notificationGenerationBySession.get(session);
|
|
const { sessionId, cwd } = notificationIdentityForSession(session);
|
|
let candidateGeneration: SessionNotificationGeneration | undefined;
|
|
try {
|
|
await this.closeActive(
|
|
sessionId,
|
|
priorGeneration === undefined ? CLEAR_RUNTIME_NOTIFICATIONS : DEFER_RUNTIME_NOTIFICATIONS,
|
|
);
|
|
candidateGeneration = priorGeneration === undefined
|
|
? undefined
|
|
: this.notificationStore.beginReplacement(priorGeneration, { sessionId, cwd });
|
|
const reopened = await this.getActive(ref, candidateGeneration === undefined ? {} : { notificationGeneration: candidateGeneration });
|
|
if (candidateGeneration !== undefined) {
|
|
this.publishNotificationMutations(this.notificationStore.commitReplacement(candidateGeneration));
|
|
}
|
|
return reopened.runtime.session;
|
|
} catch (error: unknown) {
|
|
if (candidateGeneration !== undefined) {
|
|
this.publishNotificationMutations(this.notificationStore.abortReplacement(candidateGeneration));
|
|
}
|
|
throw error;
|
|
}
|
|
},
|
|
);
|
|
this.publishStatus(reopenedSession);
|
|
}
|
|
|
|
async detachParent(ref: PiSessionLookup): Promise<void> {
|
|
const session = await this.getOrOpen(ref);
|
|
const sessionFile = session.sessionFile;
|
|
if (sessionFile === undefined || sessionFile === "") throw new Error("Session is not persisted");
|
|
await clearParentSession(sessionFile);
|
|
clearParentSessionHeader(session.sessionManager);
|
|
this.unregisterSubsession(session.sessionId);
|
|
await this.forgetUnreadSessions([{ sessionId: session.sessionId, cwd: session.sessionManager.getCwd() }]);
|
|
}
|
|
|
|
async clearQueue(ref: PiSessionLookup): Promise<ClientSessionStatus> {
|
|
await this.assertWritable(ref);
|
|
const session = await this.getOrOpen(ref);
|
|
this.clearCompactionPromptQueue(session.sessionId);
|
|
clearSessionQueue(session);
|
|
this.publishStatus(session);
|
|
return this.statusFromSession(session);
|
|
}
|
|
|
|
async dismissWarning(ref: PiSessionLookup, dismissId: string): Promise<ClientSessionStatus> {
|
|
const session = await this.getOrOpen(ref);
|
|
dismissSessionWarning(session, dismissId);
|
|
this.publishStatus(session);
|
|
return this.statusFromSession(session);
|
|
}
|
|
|
|
async abort(ref: PiSessionLookup): Promise<void> {
|
|
const active = this.activeForLookup(ref);
|
|
if (active === undefined) return;
|
|
const sessionId = active.runtime.session.sessionId;
|
|
this.clearCompactionPromptQueue(sessionId);
|
|
clearSessionQueue(active.runtime.session);
|
|
try {
|
|
await this.abortSessionOperations(active.runtime.session);
|
|
this.publishActivity(active.runtime.session, "stopped", "idle");
|
|
} catch (error: unknown) {
|
|
const message = error instanceof Error ? error.message : String(error);
|
|
this.publishActivity(active.runtime.session, "stop failed", "error", message);
|
|
throw error;
|
|
} finally {
|
|
this.publishStatus(active.runtime.session);
|
|
}
|
|
}
|
|
|
|
async stop(ref: PiSessionLookup): Promise<void> {
|
|
const active = this.activeForLookup(ref);
|
|
if (active !== undefined) {
|
|
await this.closeActive(active.runtime.session.sessionId);
|
|
return;
|
|
}
|
|
if (isPiSessionRef(ref)) {
|
|
this.publishNotificationMutations(this.notificationStore.clearSessionIdentity(ref.id, canonicalizeStoredCwd(ref.cwd), "runtime-close"));
|
|
return;
|
|
}
|
|
await this.closeActive(ref);
|
|
}
|
|
|
|
private async bulkSessionLookupContext(refs: readonly SessionBulkMutationRef[]): Promise<BulkSessionLookupContext> {
|
|
const cwdSet = new Set<string>();
|
|
let needsAllSessions = false;
|
|
for (const ref of refs) {
|
|
if (ref.cwd === undefined) needsAllSessions = true;
|
|
else cwdSet.add(ref.cwd);
|
|
}
|
|
|
|
const [sessionsByCwd, allSessions] = await Promise.all([
|
|
this.listSessionsByCwd([...cwdSet]),
|
|
needsAllSessions ? this.sessionManager.listAll?.() ?? Promise.resolve([]) : Promise.resolve(undefined),
|
|
]);
|
|
return allSessions === undefined ? { sessionsByCwd } : { sessionsByCwd, allSessions };
|
|
}
|
|
|
|
private async listSessionsByCwd(cwds: readonly string[]): Promise<Map<string, PiSessionListEntry[]>> {
|
|
const uniqueCwds = uniqueStrings(cwds);
|
|
const entries = await Promise.all(uniqueCwds.map(async (cwd) => [cwd, await this.sessionManager.list(cwd)] as const));
|
|
return new Map(entries);
|
|
}
|
|
|
|
private async archiveStoreArchiveMany(inputs: readonly ArchiveSessionInput[]): Promise<ArchivedSessionRecord[]> {
|
|
if (inputs.length === 0) return [];
|
|
if (this.archiveStore.archiveMany !== undefined) return this.archiveStore.archiveMany(inputs);
|
|
const records: ArchivedSessionRecord[] = [];
|
|
for (const input of inputs) records.push(await this.archiveStore.archive(input));
|
|
return records;
|
|
}
|
|
|
|
private async archiveStoreDeleteArchivedMany(sessionIds: readonly string[]): Promise<string[]> {
|
|
if (sessionIds.length === 0) return [];
|
|
if (this.archiveStore.deleteArchivedMany !== undefined) return this.archiveStore.deleteArchivedMany(sessionIds);
|
|
if (this.archiveStore.deleteArchived === undefined) throw new Error("Archive store does not support deletion");
|
|
for (const sessionId of sessionIds) await this.archiveStore.deleteArchived(sessionId);
|
|
return [...sessionIds];
|
|
}
|
|
|
|
private async moveLegacyArchivedRecordsForDelete(records: readonly ArchivedSessionRecord[]): Promise<SessionBulkFailure[]> {
|
|
const legacyRecords = records.filter((record) => record.archivePath === undefined);
|
|
if (legacyRecords.length === 0) return [];
|
|
|
|
let sessionsByCwd: Map<string, PiSessionListEntry[]>;
|
|
try {
|
|
sessionsByCwd = await this.listSessionsByCwd(legacyRecords.map((record) => record.cwd));
|
|
} catch (error: unknown) {
|
|
return legacyRecords.map((record) => ({ sessionId: record.sessionId, error: errorMessage(error) }));
|
|
}
|
|
|
|
const moveInputs = legacyRecords
|
|
.map((record) => findSessionByIdOrPrefix(sessionsByCwd.get(record.cwd) ?? [], record.sessionId))
|
|
.filter(isDefined)
|
|
.map(archiveInputFromListEntry);
|
|
if (moveInputs.length === 0) return [];
|
|
|
|
try {
|
|
await this.archiveStoreArchiveMany(moveInputs);
|
|
return [];
|
|
} catch (error: unknown) {
|
|
const failedIds = new Set(moveInputs.map((input) => input.sessionId));
|
|
return legacyRecords
|
|
.filter((record) => failedIds.has(record.sessionId))
|
|
.map((record) => ({ sessionId: record.sessionId, error: errorMessage(error) }));
|
|
}
|
|
}
|
|
|
|
private async cleanupPlan(request: NormalizedSessionCleanupRequest) {
|
|
const [sessions, archivedRecords] = await Promise.all([this.sessionManager.listAll?.() ?? [], this.archiveStore.list()]);
|
|
return planSessionCleanup({
|
|
sessions,
|
|
archivedRecords,
|
|
activeSessions: this.cleanupActiveSessionStatuses(),
|
|
thresholds: request.thresholds,
|
|
...(request.projectCwds === undefined ? {} : { projectCwds: request.projectCwds }),
|
|
now: this.now(),
|
|
});
|
|
}
|
|
|
|
private cleanupActiveSessionStatuses(): { sessionId: string; hasActiveWork: boolean }[] {
|
|
return [...new Set(this.active.values())].map((active) => ({
|
|
sessionId: active.runtime.session.sessionId,
|
|
hasActiveWork: this.hasActiveWork(active.runtime.session),
|
|
}));
|
|
}
|
|
|
|
private activeSessionHasWork(sessionId: string): boolean {
|
|
const active = this.active.get(sessionId);
|
|
return active !== undefined && this.hasActiveWork(active.runtime.session);
|
|
}
|
|
|
|
private reconcilableSessionIds(cwd: string, listedSessionIds: string[], archivedById: Map<string, ArchivedSessionRecord>): string[] {
|
|
const sessionIds = new Set(listedSessionIds);
|
|
for (const active of new Set(this.active.values())) {
|
|
const session = active.runtime.session;
|
|
if (session.sessionManager.getCwd() === cwd && !archivedById.has(session.sessionId)) sessionIds.add(session.sessionId);
|
|
}
|
|
return [...sessionIds];
|
|
}
|
|
|
|
private async ensureArchivedSessionMoved(record: ArchivedSessionRecord, session: PiSessionListEntry | undefined): Promise<ArchivedSessionRecord> {
|
|
if (session === undefined || this.active.has(record.sessionId)) return record;
|
|
try {
|
|
return await this.archiveStore.archive(archiveInputFromListEntry(session));
|
|
} catch {
|
|
return record;
|
|
}
|
|
}
|
|
|
|
private async ensureArchivedRecordMoved(record: ArchivedSessionRecord): Promise<ArchivedSessionRecord> {
|
|
const session = (await this.sessionManager.list(record.cwd)).find((candidate) => candidate.id === record.sessionId);
|
|
if (session === undefined) return record;
|
|
const [moved] = await this.archiveStoreArchiveMany([archiveInputFromListEntry(session)]);
|
|
return moved ?? record;
|
|
}
|
|
|
|
private async ensureArchivedRecordsMoved(records: readonly ArchivedSessionRecord[]): Promise<void> {
|
|
const legacyRecords = records.filter((record) => record.archivePath === undefined);
|
|
if (legacyRecords.length === 0) return;
|
|
|
|
const sessionsByCwd = await this.listSessionsByCwd(legacyRecords.map((record) => record.cwd));
|
|
const moveInputs = legacyRecords
|
|
.map((record) => sessionsByCwd.get(record.cwd)?.find((candidate) => candidate.id === record.sessionId))
|
|
.filter(isDefined)
|
|
.map(archiveInputFromListEntry);
|
|
await this.archiveStoreArchiveMany(moveInputs);
|
|
}
|
|
|
|
private async archiveInputForSession(session: PiAgentSession): Promise<ArchiveSessionInput> {
|
|
const cwd = session.sessionManager.getCwd();
|
|
const sessionFile = session.sessionFile;
|
|
if (sessionFile === undefined || sessionFile === "") throw new Error("Session is not persisted");
|
|
const listed = (await this.sessionManager.list(cwd)).find((candidate) => candidate.id === session.sessionId);
|
|
if (listed !== undefined) return archiveInputFromListEntry(listed);
|
|
return archiveInputFromActiveSession(session);
|
|
}
|
|
|
|
private async workspaceArchiveCandidates(cwd: string): Promise<WorkspaceArchiveCandidate[]> {
|
|
const [sessions, archivedRecords] = await Promise.all([this.sessionManager.list(cwd), this.archiveStore.list()]);
|
|
const candidates = new Map<string, WorkspaceArchiveCandidate>();
|
|
const archivedById = new Map<string, ArchivedSessionRecord>();
|
|
|
|
for (const record of archivedRecords) {
|
|
if (record.cwd === cwd) archivedById.set(record.sessionId, record);
|
|
}
|
|
|
|
for (const session of sessions) {
|
|
const archived = archivedById.get(session.id);
|
|
if (archived === undefined) candidates.set(session.id, archiveCandidateFromListEntry(session));
|
|
else {
|
|
const candidate = archiveCandidateFromArchivedRecord(archived, session);
|
|
if (candidate !== undefined) candidates.set(candidate.id, candidate);
|
|
}
|
|
}
|
|
|
|
for (const record of archivedById.values()) {
|
|
if (candidates.has(record.sessionId)) continue;
|
|
const candidate = archiveCandidateFromArchivedRecord(record, undefined);
|
|
if (candidate !== undefined) candidates.set(candidate.id, candidate);
|
|
}
|
|
|
|
for (const active of new Set(this.active.values())) {
|
|
const session = active.runtime.session;
|
|
if (session.sessionManager.getCwd() !== cwd || archivedById.has(session.sessionId)) continue;
|
|
const existing = candidates.get(session.sessionId);
|
|
candidates.set(session.sessionId, { ...(existing ?? archiveCandidateFromActiveSession(session, false)), activeSession: session });
|
|
}
|
|
|
|
return [...candidates.values()];
|
|
}
|
|
|
|
private async listSessionNames(cwd: string): Promise<string[]> {
|
|
const [sessions, archivedRecords] = await Promise.all([this.sessionManager.list(cwd), this.archiveStore.list()]);
|
|
const names = new Set<string>();
|
|
for (const session of sessions) addSessionName(names, session.name);
|
|
for (const record of archivedRecords) {
|
|
if (record.cwd === cwd) addSessionName(names, record.name);
|
|
}
|
|
for (const active of new Set(this.active.values())) {
|
|
const session = active.runtime.session;
|
|
if (session.sessionManager.getCwd() === cwd) addSessionName(names, session.sessionName);
|
|
}
|
|
return [...names];
|
|
}
|
|
|
|
private async closeActive(sessionId: string, notificationPolicy: NotificationClosePolicy = CLEAR_RUNTIME_NOTIFICATIONS): Promise<void> {
|
|
const pendingOpens = this.pendingSessionOpenPromises(sessionId);
|
|
if (pendingOpens.length > 0) await Promise.allSettled(pendingOpens);
|
|
const active = this.active.get(sessionId);
|
|
if (notificationPolicy.kind === "clear") {
|
|
const generation = active === undefined ? undefined : this.notificationGenerationBySession.get(active.runtime.session);
|
|
const mutations = generation === undefined
|
|
? this.notificationStore.clearSession(sessionId, notificationPolicy.reason)
|
|
: this.notificationStore.clearGeneration(generation, notificationPolicy.reason);
|
|
this.publishNotificationMutations(mutations);
|
|
}
|
|
if (!active) return;
|
|
this.forgetUnreadActivity(active.runtime.session);
|
|
this.active.delete(sessionId);
|
|
this.activities.delete(sessionId);
|
|
this.workspaceActivity?.removeSession(sessionId, active.runtime.session.sessionManager.getCwd());
|
|
this.clearAuthLossWarningsForSession(sessionId);
|
|
this.clearCompactionPromptQueue(sessionId);
|
|
// Disarm subsession notification before teardown so the abort below cannot
|
|
// emit a "stopped working" event that notifies the parent (e.g. on archive).
|
|
// The parent/children link is kept so the parent can still see the child.
|
|
if (this.subsessionLinkForActiveChild(active.runtime.session) !== undefined) this.subsessionNotifyArmed.delete(sessionId);
|
|
clearSessionQueue(active.runtime.session);
|
|
active.unsubscribe();
|
|
active.runtime.setRebindSession(undefined);
|
|
try {
|
|
await this.abortSessionOperations(active.runtime.session);
|
|
} finally {
|
|
await active.runtime.dispose();
|
|
}
|
|
}
|
|
|
|
private async abortSessionOperations(session: PiAgentSession): Promise<void> {
|
|
let branchSummaryAbortFailed = false;
|
|
let branchSummaryAbortError: unknown;
|
|
try {
|
|
session.abortBranchSummary?.();
|
|
} catch (error: unknown) {
|
|
branchSummaryAbortFailed = true;
|
|
branchSummaryAbortError = error;
|
|
}
|
|
|
|
try {
|
|
await session.abort();
|
|
} catch (abortError: unknown) {
|
|
if (branchSummaryAbortFailed) {
|
|
throw new AggregateError([branchSummaryAbortError, abortError], "Failed to abort session operations", { cause: abortError });
|
|
}
|
|
throw abortError;
|
|
}
|
|
if (branchSummaryAbortFailed) throw branchSummaryAbortError;
|
|
}
|
|
|
|
private async assertWritable(ref: PiSessionLookup): Promise<void> {
|
|
if (await this.getArchived(ref) !== undefined) throw new Error("Archived sessions are read-only. Restore the session to continue.");
|
|
}
|
|
|
|
private async getOrOpen(ref: PiSessionLookup): Promise<PiAgentSession> {
|
|
return (await this.getActive(ref)).runtime.session;
|
|
}
|
|
|
|
private async getActive(ref: PiSessionLookup, options: Pick<CreateSessionRuntimeOptions, "notificationGeneration"> = {}): Promise<ActiveSession<PiSessionRuntime>> {
|
|
const active = this.activeForLookup(ref);
|
|
if (active !== undefined) return active;
|
|
|
|
const archived = await this.getArchived(ref);
|
|
if (archived?.archivePath !== undefined) {
|
|
const { archivePath } = archived;
|
|
return this.openExistingSession(
|
|
archived.sessionId,
|
|
archived.cwd,
|
|
() => this.sessionManager.open(archivePath),
|
|
{ notifications: "disabled" },
|
|
);
|
|
}
|
|
|
|
const match = isPiSessionRef(ref)
|
|
? (await this.sessionManager.list(ref.cwd)).find((s) => s.id === ref.id || s.id.startsWith(ref.id))
|
|
: (await this.sessionManager.listAll?.() ?? []).find((s) => s.id === ref || s.id.startsWith(ref));
|
|
if (!match) throw new Error("Session not found");
|
|
return this.openExistingSession(match.id, match.cwd, () => this.sessionManager.open(match.path), options);
|
|
}
|
|
|
|
private openExistingSession(
|
|
sessionId: string,
|
|
cwd: string,
|
|
openSessionManager: () => PiSessionManager,
|
|
options: Pick<CreateSessionRuntimeOptions, "notificationGeneration" | "notifications"> = {},
|
|
): Promise<ActiveSession<PiSessionRuntime>> {
|
|
const active = this.activeForLookup({ id: sessionId, cwd });
|
|
if (active !== undefined) return Promise.resolve(active);
|
|
|
|
const key = JSON.stringify([canonicalizeStoredCwd(cwd), sessionId]);
|
|
const existing = this.pendingSessionOpens.get(key);
|
|
if (existing !== undefined) return existing.promise;
|
|
|
|
const pending: PendingSessionOpen = {
|
|
sessionId,
|
|
promise: this.create(openSessionManager(), cwd, options),
|
|
};
|
|
pending.promise = pending.promise.finally(() => {
|
|
if (this.pendingSessionOpens.get(key) === pending) this.pendingSessionOpens.delete(key);
|
|
});
|
|
this.pendingSessionOpens.set(key, pending);
|
|
return pending.promise;
|
|
}
|
|
|
|
private pendingSessionOpenPromises(sessionId?: string): Promise<ActiveSession<PiSessionRuntime>>[] {
|
|
return [...this.pendingSessionOpens.values()]
|
|
.filter((pending) => sessionId === undefined || pending.sessionId === sessionId)
|
|
.map((pending) => pending.promise);
|
|
}
|
|
|
|
private async getArchived(ref: PiSessionLookup): Promise<ArchivedSessionRecord | undefined> {
|
|
const archived = await this.archiveStore.get(sessionIdFromLookup(ref));
|
|
if (archived === undefined) return undefined;
|
|
if (isPiSessionRef(ref) && archived.cwd !== ref.cwd) return undefined;
|
|
return archived;
|
|
}
|
|
|
|
private isCurrentActiveSession(session: PiAgentSession): boolean {
|
|
return this.active.get(session.sessionId)?.runtime.session === session;
|
|
}
|
|
|
|
private activeForLookup(ref: PiSessionLookup): ActiveSession<PiSessionRuntime> | undefined {
|
|
const sessionId = sessionIdFromLookup(ref);
|
|
const exact = this.active.get(sessionId);
|
|
if (exact !== undefined && lookupMatchesActiveSession(ref, exact)) return exact;
|
|
for (const [candidateId, active] of this.active.entries()) {
|
|
if (candidateId.startsWith(sessionId) && lookupMatchesActiveSession(ref, active)) return active;
|
|
}
|
|
return undefined;
|
|
}
|
|
|
|
private async create(
|
|
sessionManager: PiSessionManager,
|
|
cwd: string,
|
|
options: CreateSessionRuntimeOptions = {},
|
|
): Promise<ActiveSession<PiSessionRuntime>> {
|
|
const delegationToolsEnabled = options.creationProvenance !== "tracked-subsession"
|
|
&& await sessionAllowsDelegationTools(sessionManager, this.sessionManager);
|
|
const runtime = await this.createAgentRuntime(this.createRuntime, {
|
|
cwd,
|
|
agentDir: this.agentDir,
|
|
sessionManager,
|
|
delegationToolsEnabled,
|
|
...(options.initialModel === undefined ? {} : { initialModel: options.initialModel }),
|
|
});
|
|
const active: ActiveSession<PiSessionRuntime> = { runtime, unsubscribe: noop };
|
|
let boundSession = runtime.session;
|
|
let notificationGeneration = options.notificationGeneration;
|
|
let notificationOwnership: "disabled" | "external" | "registered" | "replacement" = options.notifications === "disabled"
|
|
? "disabled"
|
|
: notificationGeneration === undefined
|
|
? "registered"
|
|
: "external";
|
|
|
|
if (notificationOwnership === "registered") {
|
|
const notificationIdentity = notificationIdentityForSession(runtime.session);
|
|
const existingCandidate = this.notificationStore.beginReplacementForSession(
|
|
notificationIdentity.sessionId,
|
|
notificationIdentity.cwd,
|
|
);
|
|
if (existingCandidate !== undefined) {
|
|
notificationGeneration = existingCandidate;
|
|
notificationOwnership = "replacement";
|
|
} else {
|
|
const registration = this.notificationStore.registerSession(
|
|
notificationIdentity.sessionId,
|
|
notificationIdentity.cwd,
|
|
);
|
|
notificationGeneration = registration.generation;
|
|
this.publishNotificationMutations(registration.mutations);
|
|
}
|
|
}
|
|
if (notificationGeneration !== undefined) this.notificationGenerationBySession.set(runtime.session, notificationGeneration);
|
|
|
|
try {
|
|
if (options.creationProvenance === "tracked-subsession") {
|
|
await this.publishUnreadMutations(this.unreadStore.excludeSession(
|
|
runtime.session.sessionId,
|
|
canonicalizeStoredCwd(runtime.session.sessionManager.getCwd()),
|
|
));
|
|
} else {
|
|
await this.recoverSubsessionTrackingForOpenedSession(runtime.session);
|
|
}
|
|
await this.bindSessionExtensions(runtime.session, notificationGeneration);
|
|
this.bindRuntime(active);
|
|
runtime.setRebindSession(async (session) => {
|
|
const priorGeneration = notificationGeneration;
|
|
let candidateGeneration: SessionNotificationGeneration | undefined;
|
|
try {
|
|
await this.prepareUnreadRuntimeRebind(boundSession, session);
|
|
await this.recoverSubsessionTrackingForOpenedSession(session);
|
|
if (priorGeneration !== undefined) {
|
|
candidateGeneration = this.notificationStore.beginReplacement(priorGeneration, notificationIdentityForSession(session));
|
|
this.notificationGenerationBySession.set(session, candidateGeneration);
|
|
}
|
|
this.bindRuntime(active, session);
|
|
boundSession = session;
|
|
await this.bindSessionExtensions(session, candidateGeneration);
|
|
if (candidateGeneration !== undefined) {
|
|
this.publishNotificationMutations(this.notificationStore.commitReplacement(candidateGeneration));
|
|
notificationGeneration = candidateGeneration;
|
|
}
|
|
} catch (error: unknown) {
|
|
if (candidateGeneration !== undefined) {
|
|
this.publishNotificationMutations(this.notificationStore.abortReplacement(candidateGeneration, "candidate"));
|
|
notificationGeneration = candidateGeneration;
|
|
this.notificationGenerationBySession.set(session, candidateGeneration);
|
|
}
|
|
throw error;
|
|
}
|
|
});
|
|
this.active.set(runtime.session.sessionId, active);
|
|
if (notificationOwnership === "replacement" && notificationGeneration !== undefined) {
|
|
this.publishNotificationMutations(this.notificationStore.commitReplacement(notificationGeneration));
|
|
notificationOwnership = "external";
|
|
}
|
|
this.publishStatus(runtime.session);
|
|
return active;
|
|
} catch (error: unknown) {
|
|
if (notificationGeneration !== undefined) {
|
|
if (notificationOwnership === "registered") {
|
|
this.publishNotificationMutations(this.notificationStore.clearSession(runtime.session.sessionId, "initialization-failed"));
|
|
} else if (notificationOwnership === "replacement") {
|
|
this.publishNotificationMutations(this.notificationStore.abortReplacement(notificationGeneration));
|
|
}
|
|
}
|
|
active.unsubscribe();
|
|
this.forgetUnreadActivity(boundSession);
|
|
let removedActive = false;
|
|
for (const [sessionId, candidate] of this.active.entries()) {
|
|
if (candidate !== active) continue;
|
|
this.active.delete(sessionId);
|
|
this.activities.delete(sessionId);
|
|
this.clearAuthLossWarningsForSession(sessionId);
|
|
this.clearCompactionPromptQueue(sessionId);
|
|
removedActive = true;
|
|
}
|
|
if (removedActive) {
|
|
this.workspaceActivity?.removeSession(runtime.session.sessionId, runtime.session.sessionManager.getCwd());
|
|
}
|
|
try {
|
|
await runtime.session.abort();
|
|
} finally {
|
|
await runtime.dispose();
|
|
}
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
private async bindSessionExtensions(
|
|
session: PiAgentSession,
|
|
generation: SessionNotificationGeneration | undefined,
|
|
): Promise<void> {
|
|
const uiContext = this.sessionUiContext(session, generation);
|
|
await session.bindExtensions({
|
|
uiContext,
|
|
mode: "rpc",
|
|
onError: (error) => {
|
|
const message = `${error.extensionPath}: ${error.error}`;
|
|
this.publishActivity(session, "extension error", "error", message);
|
|
this.events.publish(session.sessionId, { type: "session.error", message });
|
|
},
|
|
});
|
|
}
|
|
|
|
private replaceSessionNotificationContext(session: PiAgentSession, generation: SessionNotificationGeneration): void {
|
|
session.extensionRunner.setUIContext(this.sessionUiContext(session, generation), "rpc");
|
|
}
|
|
|
|
private sessionUiContext(
|
|
session: PiAgentSession,
|
|
generation: SessionNotificationGeneration | undefined,
|
|
): ExtensionUIContext {
|
|
const baseUiContext = session.extensionRunner.getUIContext();
|
|
const notify: ExtensionUIContext["notify"] = (message, type) => {
|
|
if (generation === undefined) {
|
|
this.events.publish(session.sessionId, {
|
|
type: "command.output",
|
|
level: type === "error" ? "error" : "info",
|
|
message,
|
|
});
|
|
return;
|
|
}
|
|
const added = this.notificationStore.addNotification(generation, message, type);
|
|
this.publishNotificationMutations(added.mutations);
|
|
if (added.notification === undefined) return;
|
|
this.events.publish(session.sessionId, {
|
|
type: "command.output",
|
|
level: type === "error" ? "error" : "info",
|
|
message,
|
|
notificationId: added.notification.id,
|
|
});
|
|
};
|
|
// PI WEB owns the browser-facing notification and text-formatting
|
|
// boundaries. Delegate every other UI method to Pi's headless defaults so
|
|
// unsupported dialogs cancel safely instead of hanging.
|
|
return new Proxy(baseUiContext, {
|
|
get(target, property, receiver): unknown {
|
|
if (property === "notify") return notify;
|
|
if (property === "theme") return plainTextTheme;
|
|
const value: unknown = Reflect.get(target, property, receiver);
|
|
return value;
|
|
},
|
|
});
|
|
}
|
|
|
|
private publishNotificationMutations(mutations: readonly SessionNotificationMutation[]): void {
|
|
for (const mutation of mutations) {
|
|
this.events.publish(mutation.sessionId, mutation.inboxEvent);
|
|
this.events.publishNotificationSummary(mutation.summaryEvent);
|
|
}
|
|
}
|
|
|
|
private async prepareUnreadRuntimeRebind(previous: PiAgentSession, next: PiAgentSession): Promise<void> {
|
|
const previousCwd = canonicalizeStoredCwd(previous.sessionManager.getCwd());
|
|
this.unreadStore.forgetActivity(previous.sessionId, previousCwd);
|
|
const nextCwd = canonicalizeStoredCwd(next.sessionManager.getCwd());
|
|
if (previous.sessionId === next.sessionId && cwdPathsEqual(previousCwd, nextCwd)) return;
|
|
await this.publishUnreadMutations(this.unreadStore.forgetSession(previous.sessionId, previousCwd));
|
|
}
|
|
|
|
private forgetUnreadActivity(session: PiAgentSession): void {
|
|
this.unreadStore.forgetActivity(
|
|
session.sessionId,
|
|
canonicalizeStoredCwd(session.sessionManager.getCwd()),
|
|
);
|
|
}
|
|
|
|
private async forgetUnreadSessions(identities: readonly { sessionId: string; cwd: string }[]): Promise<void> {
|
|
const mutations: SessionUnreadMutation[] = [];
|
|
for (const identity of identities) {
|
|
mutations.push(...this.unreadStore.forgetSession(
|
|
identity.sessionId,
|
|
canonicalizeStoredCwd(identity.cwd),
|
|
));
|
|
}
|
|
await this.publishUnreadMutations(mutations);
|
|
}
|
|
|
|
private observeUnreadActivityState(session: PiAgentSession): void {
|
|
const mutations = this.unreadStore.observeActivityState(
|
|
session.sessionId,
|
|
canonicalizeStoredCwd(session.sessionManager.getCwd()),
|
|
this.hasActiveWork(session),
|
|
);
|
|
if (mutations.length === 0) return;
|
|
void this.publishUnreadMutations(mutations).catch(() => undefined);
|
|
}
|
|
|
|
private publishUnreadMutations(mutations: readonly SessionUnreadMutation[]): Promise<void> {
|
|
this.enqueueUnreadMutations(mutations);
|
|
this.unreadPublicationFlushRequested = true;
|
|
if (this.unreadPublication === undefined && this.unreadPublicationRetryTimer !== undefined) {
|
|
const failure = this.unreadPublicationFailure;
|
|
return Promise.reject(failure instanceof Error
|
|
? failure
|
|
: new Error("Session unread publication is awaiting retry", { cause: failure }));
|
|
}
|
|
return this.ensureUnreadPublication();
|
|
}
|
|
|
|
private ensureUnreadPublication(): Promise<void> {
|
|
const existing = this.unreadPublication;
|
|
if (existing !== undefined) return existing;
|
|
|
|
const publication = this.drainUnreadPublication();
|
|
this.unreadPublication = publication;
|
|
void publication.then(
|
|
() => {
|
|
if (this.unreadPublication === publication) this.unreadPublication = undefined;
|
|
},
|
|
(error: unknown) => {
|
|
if (this.unreadPublication === publication) this.unreadPublication = undefined;
|
|
this.unreadPublicationFailure = error;
|
|
this.logger.info(
|
|
{ error: error instanceof Error ? error.message : String(error) },
|
|
"failed to publish durable session unread mutations",
|
|
);
|
|
this.scheduleUnreadPublicationRetry();
|
|
},
|
|
);
|
|
return publication;
|
|
}
|
|
|
|
private async drainUnreadPublication(): Promise<void> {
|
|
while (this.unreadPublicationFlushRequested || this.pendingUnreadMutations.length > 0) {
|
|
this.unreadPublicationFlushRequested = false;
|
|
const batch = this.pendingUnreadMutations.splice(0);
|
|
let publishedCount = 0;
|
|
try {
|
|
await this.unreadStore.flush();
|
|
for (const mutation of batch) {
|
|
this.events.publishGlobal(mutation.event);
|
|
publishedCount += 1;
|
|
}
|
|
} catch (error: unknown) {
|
|
this.prependUnreadMutations(batch.slice(publishedCount));
|
|
this.unreadPublicationFlushRequested = true;
|
|
throw error;
|
|
}
|
|
this.unreadPublicationFailure = undefined;
|
|
this.clearUnreadPublicationRetry();
|
|
}
|
|
}
|
|
|
|
private enqueueUnreadMutations(mutations: readonly SessionUnreadMutation[]): void {
|
|
this.pendingUnreadMutations.push(...mutations);
|
|
this.trimPendingUnreadMutations();
|
|
}
|
|
|
|
private prependUnreadMutations(mutations: readonly SessionUnreadMutation[]): void {
|
|
this.pendingUnreadMutations.unshift(...mutations);
|
|
this.trimPendingUnreadMutations();
|
|
}
|
|
|
|
private trimPendingUnreadMutations(): void {
|
|
const excess = this.pendingUnreadMutations.length - MAX_PENDING_UNREAD_MUTATIONS;
|
|
if (excess > 0) this.pendingUnreadMutations.splice(0, excess);
|
|
}
|
|
|
|
private scheduleUnreadPublicationRetry(): void {
|
|
if (this.unreadPublicationStopped || this.unreadPublicationRetryTimer !== undefined) return;
|
|
const delay = this.unreadPublicationRetryDelayMs;
|
|
this.unreadPublicationRetryDelayMs = Math.min(
|
|
Math.max(delay * 2, this.unreadPublicationRetryInitialMs),
|
|
Math.max(MAX_UNREAD_PUBLICATION_RETRY_MS, this.unreadPublicationRetryInitialMs),
|
|
);
|
|
this.unreadPublicationRetryTimer = setTimeout(() => {
|
|
this.unreadPublicationRetryTimer = undefined;
|
|
void this.ensureUnreadPublication().catch(() => undefined);
|
|
}, delay);
|
|
this.unreadPublicationRetryTimer.unref();
|
|
}
|
|
|
|
private clearUnreadPublicationRetry(): void {
|
|
if (this.unreadPublicationRetryTimer !== undefined) clearTimeout(this.unreadPublicationRetryTimer);
|
|
this.unreadPublicationRetryTimer = undefined;
|
|
this.unreadPublicationRetryDelayMs = this.unreadPublicationRetryInitialMs;
|
|
}
|
|
|
|
private bindRuntime(active: ActiveSession<PiSessionRuntime>, session: PiAgentSession = active.runtime.session): void {
|
|
active.unsubscribe();
|
|
for (const [sessionId, candidate] of this.active.entries()) {
|
|
if (candidate === active) {
|
|
this.active.delete(sessionId);
|
|
if (sessionId !== session.sessionId) this.clearCompactionPromptQueue(sessionId);
|
|
}
|
|
}
|
|
active.unsubscribe = session.subscribe((event) => {
|
|
this.events.publish(session.sessionId, toClientEvent(event));
|
|
this.publishActivityForEvent(session, event);
|
|
const eventType = getString(event, "type");
|
|
if (eventType === "compaction_end") this.scheduleCompactionQueueDrain(session.sessionId);
|
|
if (eventType === "agent_start" || eventType === "agent_end") this.scheduleCompactionQueueDrain(session.sessionId);
|
|
this.publishStatus(session);
|
|
this.updateSubsessionTracking(session);
|
|
});
|
|
this.active.set(session.sessionId, active);
|
|
}
|
|
|
|
private scheduleCompactionQueueDrain(sessionId: string, delayMs = 0): void {
|
|
if (!this.compactionPromptQueues.has(sessionId) || this.compactionDrainTimers.has(sessionId)) return;
|
|
const timer = setTimeout(() => {
|
|
this.compactionDrainTimers.delete(sessionId);
|
|
this.drainCompactionPromptQueue(sessionId);
|
|
}, delayMs);
|
|
this.compactionDrainTimers.set(sessionId, timer);
|
|
}
|
|
|
|
private drainCompactionPromptQueue(sessionId: string): void {
|
|
const active = this.active.get(sessionId);
|
|
if (active === undefined) return;
|
|
const { session } = active.runtime;
|
|
if (session.isCompacting) {
|
|
this.scheduleCompactionQueueDrain(sessionId, 100);
|
|
return;
|
|
}
|
|
|
|
if (session.isStreaming) {
|
|
const queued = this.takeCompactionPromptQueue(sessionId);
|
|
if (queued.length === 0) return;
|
|
this.publishStatus(session);
|
|
for (const prompt of queued) void this.submitPrompt(session, prompt.text, prompt.kind, prompt.images, prompt.echoUserMessage ?? true);
|
|
return;
|
|
}
|
|
|
|
const prompt = this.shiftCompactionPrompt(sessionId);
|
|
if (prompt === undefined) return;
|
|
this.publishStatus(session);
|
|
const submitted = this.submitPrompt(session, prompt.text, undefined, prompt.images, prompt.echoUserMessage ?? true);
|
|
void submitted.finally(() => { this.scheduleCompactionQueueDrain(sessionId); });
|
|
}
|
|
|
|
private takeCompactionPromptQueue(sessionId: string): QueuedPrompt[] {
|
|
const queued = this.compactionPromptQueues.get(sessionId) ?? [];
|
|
this.compactionPromptQueues.delete(sessionId);
|
|
return queued;
|
|
}
|
|
|
|
private shiftCompactionPrompt(sessionId: string): QueuedPrompt | undefined {
|
|
const queue = this.compactionPromptQueues.get(sessionId);
|
|
const prompt = queue?.shift();
|
|
if (queue === undefined || queue.length === 0) this.compactionPromptQueues.delete(sessionId);
|
|
return prompt;
|
|
}
|
|
|
|
private clearCompactionPromptQueue(sessionId: string): void {
|
|
this.compactionPromptQueues.delete(sessionId);
|
|
const timer = this.compactionDrainTimers.get(sessionId);
|
|
if (timer !== undefined) {
|
|
clearTimeout(timer);
|
|
this.compactionDrainTimers.delete(sessionId);
|
|
}
|
|
}
|
|
|
|
private clearCompactionDrainTimers(): void {
|
|
for (const timer of this.compactionDrainTimers.values()) clearTimeout(timer);
|
|
this.compactionDrainTimers.clear();
|
|
}
|
|
|
|
private maybeGenerateSessionName(session: PiAgentSession, firstMessage: string): void {
|
|
if (session.sessionName !== undefined || session.messages.length !== 0 || session.isStreaming || session.isCompacting) return;
|
|
|
|
const deterministicName = deterministicSessionName(firstMessage);
|
|
if (deterministicName !== undefined) {
|
|
this.applyGeneratedSessionName(session, deterministicName);
|
|
return;
|
|
}
|
|
|
|
const model = session.model;
|
|
if (model === undefined) return;
|
|
|
|
void generateShortSessionName(session.agent.streamFn, model, firstMessage).then((name) => {
|
|
this.applyGeneratedSessionName(session, name ?? fallbackSessionName(firstMessage));
|
|
}).catch(() => {
|
|
this.applyGeneratedSessionName(session, fallbackSessionName(firstMessage));
|
|
});
|
|
}
|
|
|
|
private applyGeneratedSessionName(session: PiAgentSession, name: string | undefined): void {
|
|
if (name === undefined || session.sessionName !== undefined) return;
|
|
if (this.treeNavigations.has(session)) {
|
|
this.deferredGeneratedSessionNames.set(session, name);
|
|
return;
|
|
}
|
|
session.setSessionName(name);
|
|
this.publishSessionName(session);
|
|
}
|
|
|
|
private flushDeferredTreeNavigationWork(session: PiAgentSession): void {
|
|
const generatedName = this.deferredGeneratedSessionNames.get(session);
|
|
this.deferredGeneratedSessionNames.delete(session);
|
|
if (generatedName !== undefined) {
|
|
try {
|
|
this.applyGeneratedSessionName(session, generatedName);
|
|
} catch (error: unknown) {
|
|
this.logger.info(
|
|
{ sessionId: session.sessionId, error: error instanceof Error ? error.message : String(error) },
|
|
"failed to apply deferred session name",
|
|
);
|
|
}
|
|
}
|
|
|
|
const notifications = this.deferredSubsessionNotifications.get(session) ?? [];
|
|
this.deferredSubsessionNotifications.delete(session);
|
|
for (const notification of notifications) {
|
|
void this.deliverSubsessionNotification(session, notification).catch((error: unknown) => {
|
|
this.logSubsessionNotificationFailure(notification.parentId, notification.childId, error);
|
|
});
|
|
}
|
|
}
|
|
|
|
applyAuthChange(change: AuthChange = {}): void {
|
|
// ModelRuntime.login()/logout() refresh the shared runtime before AuthService
|
|
// emits the change, so no refresh is needed here. Keeping this synchronous
|
|
// also lets every active session observe the same committed auth snapshot.
|
|
for (const active of this.active.values()) {
|
|
const { session } = active.runtime;
|
|
this.syncCurrentModelAuthWarning(session, change.removedProviderId);
|
|
this.publishStatus(session);
|
|
}
|
|
}
|
|
|
|
private syncCurrentModelAuthWarning(session: PiAgentSession, removedProviderId: string | undefined): void {
|
|
const model = session.model;
|
|
if (model === undefined) return;
|
|
if (model.provider === "unknown" && model.id === "unknown") return;
|
|
const warningKey = authLossWarningKey(session.sessionId, model.provider, model.id);
|
|
const registered = session.modelRuntime.getModel(model.provider, model.id);
|
|
if (registered === undefined) return;
|
|
if (session.modelRuntime.hasConfiguredAuth(model.provider)) {
|
|
this.authLossWarnings.delete(warningKey);
|
|
return;
|
|
}
|
|
if (removedProviderId === undefined || model.provider !== removedProviderId || this.authLossWarnings.has(warningKey)) return;
|
|
this.authLossWarnings.add(warningKey);
|
|
this.events.publish(session.sessionId, {
|
|
type: "command.output",
|
|
level: "error",
|
|
message: `Authentication for ${model.provider}/${model.id} was removed. Use /model to select another model.`,
|
|
});
|
|
}
|
|
|
|
private clearAuthLossWarningsForSession(sessionId: string): void {
|
|
const prefix = `${sessionId}:`;
|
|
for (const key of this.authLossWarnings) {
|
|
if (key.startsWith(prefix)) this.authLossWarnings.delete(key);
|
|
}
|
|
}
|
|
|
|
private publishSessionName(session: PiAgentSession): void {
|
|
const event = session.sessionName === undefined
|
|
? { type: "session.name", sessionId: session.sessionId } as const
|
|
: { type: "session.name", sessionId: session.sessionId, name: session.sessionName } as const;
|
|
this.events.publish(session.sessionId, event);
|
|
this.events.publishGlobal(event);
|
|
}
|
|
|
|
private publishHeartbeats(): void {
|
|
for (const active of this.active.values()) {
|
|
const { session } = active.runtime;
|
|
// Re-evaluate subsession completion here too: agent_end can arrive while
|
|
// the session still reports active work transiently, so the event-driven
|
|
// latch may not fire. The heartbeat re-checks once the session settles.
|
|
this.updateSubsessionTracking(session);
|
|
const activity = this.activities.get(session.sessionId);
|
|
if (!this.hasActiveWork(session)) {
|
|
if (activity?.phase === "active") this.publishStatus(session);
|
|
continue;
|
|
}
|
|
this.publishStatus(session);
|
|
if (activity?.phase === "active") this.publishActivity(session, activity.label, "active", activity.detail);
|
|
else this.publishActivity(session, this.activityLabelFromStatus(session), "active");
|
|
}
|
|
}
|
|
|
|
private activityLabelFromStatus(session: PiAgentSession): string {
|
|
if (this.treeNavigations.has(session)) return "navigating session tree";
|
|
if (this.isSessionEntryMutationActive(session)) return "updating session";
|
|
if (session.isCompacting) return "compacting";
|
|
if (session.isBashRunning) return "running bash";
|
|
if (session.isStreaming) return "agent running";
|
|
if (this.pendingMessageCount(session) > 0) return "queued";
|
|
return "active";
|
|
}
|
|
|
|
private hasActiveWork(session: PiAgentSession): boolean {
|
|
return this.treeNavigations.has(session)
|
|
|| this.isSessionEntryMutationActive(session)
|
|
|| this.isTreeExclusiveOperationActive(session)
|
|
|| sessionHasActiveWork(session, this.compactionQueuedMessages(session.sessionId).length);
|
|
}
|
|
|
|
private async runTreeExclusiveOperation<T>(
|
|
targets: readonly TreeExclusiveOperationTarget[],
|
|
activeError: string,
|
|
operation: () => Promise<T>,
|
|
): Promise<T> {
|
|
const sessionIds = new Set<string>();
|
|
const runtimes = new Set<PiSessionRuntime>();
|
|
const sessions = new Set<PiAgentSession>();
|
|
for (const target of targets) {
|
|
const runtime = target.runtime ?? (target.session === undefined ? undefined : this.activeRuntimeForSession(target.session));
|
|
const session = target.session ?? runtime?.session;
|
|
if (session !== undefined && this.hasActiveWork(session)) throw new Error(activeError);
|
|
sessionIds.add(target.sessionId);
|
|
if (runtime !== undefined) runtimes.add(runtime);
|
|
if (session !== undefined) sessions.add(session);
|
|
}
|
|
|
|
for (const sessionId of sessionIds) {
|
|
this.treeExclusiveSessionOperationCounts.set(sessionId, (this.treeExclusiveSessionOperationCounts.get(sessionId) ?? 0) + 1);
|
|
}
|
|
for (const runtime of runtimes) {
|
|
this.treeExclusiveRuntimeOperationCounts.set(runtime, (this.treeExclusiveRuntimeOperationCounts.get(runtime) ?? 0) + 1);
|
|
}
|
|
for (const session of sessions) this.observeUnreadActivityState(session);
|
|
|
|
try {
|
|
return await operation();
|
|
} finally {
|
|
for (const runtime of runtimes) decrementWeakCount(this.treeExclusiveRuntimeOperationCounts, runtime);
|
|
for (const sessionId of sessionIds) decrementMapCount(this.treeExclusiveSessionOperationCounts, sessionId);
|
|
for (const session of sessions) {
|
|
if (this.isCurrentActiveSession(session)) this.observeUnreadActivityState(session);
|
|
}
|
|
}
|
|
}
|
|
|
|
private isTreeExclusiveSessionIdentityActive(sessionId: string): boolean {
|
|
return (this.treeExclusiveSessionOperationCounts.get(sessionId) ?? 0) > 0;
|
|
}
|
|
|
|
private isTreeExclusiveOperationActive(session: PiAgentSession): boolean {
|
|
if (this.isTreeExclusiveSessionIdentityActive(session.sessionId)) return true;
|
|
const runtime = this.activeRuntimeForSession(session);
|
|
return runtime !== undefined && (this.treeExclusiveRuntimeOperationCounts.get(runtime) ?? 0) > 0;
|
|
}
|
|
|
|
private activeRuntimeForSession(session: PiAgentSession): PiSessionRuntime | undefined {
|
|
for (const active of new Set(this.active.values())) {
|
|
if (active.runtime.session === session) return active.runtime;
|
|
}
|
|
return undefined;
|
|
}
|
|
|
|
private assertTreeNavigationInactive(session: PiAgentSession, action: string): void {
|
|
if (this.treeNavigations.has(session)) throw new Error(`Cannot ${action} while session tree navigation is active`);
|
|
}
|
|
|
|
private async runSessionEntryMutation<T>(session: PiAgentSession, action: string, operation: () => Promise<T>): Promise<T> {
|
|
this.beginSessionEntryMutation(session, action);
|
|
try {
|
|
return await operation();
|
|
} finally {
|
|
this.endSessionEntryMutation(session);
|
|
}
|
|
}
|
|
|
|
private beginSessionEntryMutation(session: PiAgentSession, action: string): void {
|
|
this.assertTreeNavigationInactive(session, action);
|
|
this.sessionEntryMutationCounts.set(session, (this.sessionEntryMutationCounts.get(session) ?? 0) + 1);
|
|
this.observeUnreadActivityState(session);
|
|
}
|
|
|
|
private endSessionEntryMutation(session: PiAgentSession): void {
|
|
const remaining = (this.sessionEntryMutationCounts.get(session) ?? 1) - 1;
|
|
if (remaining <= 0) this.sessionEntryMutationCounts.delete(session);
|
|
else this.sessionEntryMutationCounts.set(session, remaining);
|
|
this.observeUnreadActivityState(session);
|
|
}
|
|
|
|
private isSessionEntryMutationActive(session: PiAgentSession): boolean {
|
|
return (this.sessionEntryMutationCounts.get(session) ?? 0) > 0;
|
|
}
|
|
|
|
private publishActivityForEvent(session: PiAgentSession, event: unknown): void {
|
|
const eventType = getString(event, "type");
|
|
if (eventType === undefined) return;
|
|
if (eventType === "agent_start") { this.publishActivity(session, "agent running", "active"); return; }
|
|
if (eventType === "agent_end") {
|
|
this.publishActivity(session, "idle", "idle");
|
|
setTimeout(() => {
|
|
this.publishActivity(session, "idle", "idle");
|
|
this.publishStatus(session);
|
|
}, 250);
|
|
return;
|
|
}
|
|
if (eventType === "turn_end") { this.publishActivity(session, "turn complete", "idle"); return; }
|
|
if (eventType === "message_start") { this.publishActivity(session, "message started", "active"); return; }
|
|
if (eventType === "message_end") { this.publishActivity(session, "message complete", "idle"); return; }
|
|
if (eventType === "message_update") { this.publishActivity(session, "receiving response", "active"); return; }
|
|
if (eventType === "tool_execution_start") { this.publishActivity(session, "running tool", "active", getString(event, "toolName")); return; }
|
|
if (eventType === "tool_execution_end") {
|
|
const isError = getBoolean(event, "isError") === true;
|
|
this.publishActivity(session, isError ? "tool failed" : "tool complete", isError ? "error" : "idle", getString(event, "toolName"));
|
|
return;
|
|
}
|
|
if (eventType === "bash_execution_start") { this.publishActivity(session, "running bash", "active"); return; }
|
|
if (eventType === "bash_execution_end") { this.publishActivity(session, "bash complete", "idle"); return; }
|
|
if (this.hasActiveWork(session)) this.publishActivity(session, eventType.replaceAll("_", " "), "active");
|
|
}
|
|
|
|
private publishActivity(session: PiAgentSession, label: string, phase: "active" | "idle" | "error", detail?: string): void {
|
|
const at = new Date().toISOString();
|
|
const stored = detail === undefined ? { phase, label, at } : { phase, label, detail, at };
|
|
this.activities.set(session.sessionId, stored);
|
|
const activity = detail === undefined ? { sessionId: session.sessionId, phase, label, at } : { sessionId: session.sessionId, phase, label, detail, at };
|
|
this.workspaceActivity?.applySessionActivity(session.sessionManager.getCwd(), activity);
|
|
this.events.publish(session.sessionId, { type: "activity.update", activity });
|
|
this.events.publishGlobal({ type: "activity.update", activity });
|
|
this.observeUnreadActivityState(session);
|
|
}
|
|
|
|
private publishStatus(session: PiAgentSession): void {
|
|
const status = this.statusFromSession(session);
|
|
this.clearStaleActiveActivity(session);
|
|
this.workspaceActivity?.applySessionStatus(session.sessionManager.getCwd(), status);
|
|
this.events.publish(session.sessionId, { type: "status.update", status });
|
|
this.events.publishGlobal({ type: "status.update", status });
|
|
this.observeUnreadActivityState(session);
|
|
}
|
|
|
|
private clearStaleActiveActivity(session: PiAgentSession): void {
|
|
const current = this.activities.get(session.sessionId);
|
|
if (current?.phase !== "active" || this.hasActiveWork(session)) return;
|
|
const at = new Date().toISOString();
|
|
const stored = { phase: "idle" as const, label: "idle", at };
|
|
this.activities.set(session.sessionId, stored);
|
|
const activity = { sessionId: session.sessionId, ...stored };
|
|
this.events.publish(session.sessionId, { type: "activity.update", activity });
|
|
this.events.publishGlobal({ type: "activity.update", activity });
|
|
}
|
|
|
|
private statusFromSession(session: PiAgentSession): ClientSessionStatus {
|
|
const stats = session.getSessionStats();
|
|
const model = session.model === undefined ? undefined : modelToClientModel(session.model);
|
|
const contextUsage = session.getContextUsage();
|
|
const warnings = this.warningsForSession(session);
|
|
return {
|
|
sessionId: session.sessionId,
|
|
persisted: sessionFileExists(session.sessionFile),
|
|
...(model === undefined ? {} : { model }),
|
|
thinkingLevel: session.thinkingLevel,
|
|
isStreaming: session.isStreaming,
|
|
isCompacting: session.isCompacting,
|
|
isBashRunning: session.isBashRunning,
|
|
pendingMessageCount: this.pendingMessageCount(session),
|
|
queuedMessages: queuedMessagesFromSession(session, this.compactionQueuedMessages(session.sessionId)),
|
|
messageCount: session.messages.length,
|
|
tokens: stats.tokens,
|
|
cost: stats.cost,
|
|
...(contextUsage === undefined ? {} : { contextUsage }),
|
|
...(warnings.length === 0 ? {} : { warnings }),
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Compute the live warning set for a session: runtime/resource diagnostics from
|
|
* the active runtime (if any) plus the Anthropic subscription-auth notice. Read
|
|
* fresh on each status publish so a rebuilt runtime or an auth/model change is
|
|
* reflected without caching a stale snapshot.
|
|
*/
|
|
private warningsForSession(session: PiAgentSession): SessionWarning[] {
|
|
const runtime = this.active.get(session.sessionId)?.runtime;
|
|
const warnings = runtime === undefined ? [] : collectRuntimeWarnings(runtime);
|
|
const anthropic = anthropicSubscriptionWarning(session, join(this.agentDir, "auth.json"));
|
|
if (anthropic !== undefined) warnings.push(anthropic);
|
|
return warnings;
|
|
}
|
|
|
|
private pendingMessageCount(session: PiAgentSession): number {
|
|
return session.pendingMessageCount + this.compactionQueuedMessages(session.sessionId).length;
|
|
}
|
|
|
|
private compactionQueuedMessages(sessionId: string): readonly QueuedPrompt[] {
|
|
return this.compactionPromptQueues.get(sessionId) ?? [];
|
|
}
|
|
|
|
private hasQueuedMessageText(session: PiAgentSession, text: string): boolean {
|
|
return queuedMessagesFromSession(session, this.compactionQueuedMessages(session.sessionId)).some((message) => message.text === text);
|
|
}
|
|
}
|
|
|
|
function previewResponseFromPlan(plan: SessionCleanupPlan): ClientSessionCleanupPreviewResponse {
|
|
return {
|
|
generatedAt: plan.generatedAt,
|
|
thresholds: plan.thresholds,
|
|
projects: plan.projects,
|
|
totals: plan.totals,
|
|
...(plan.skippedBusySessionIds.length === 0 ? {} : { skippedBusySessionIds: plan.skippedBusySessionIds }),
|
|
};
|
|
}
|
|
|
|
function uniqueBulkSessionRefs(refs: readonly SessionBulkMutationRef[]): SessionBulkMutationRef[] {
|
|
const seen = new Set<string>();
|
|
const unique: SessionBulkMutationRef[] = [];
|
|
for (const ref of refs) {
|
|
const key = `${ref.cwd ?? ""}\0${ref.id}`;
|
|
if (seen.has(key)) continue;
|
|
seen.add(key);
|
|
unique.push(ref);
|
|
}
|
|
return unique;
|
|
}
|
|
|
|
function bulkRefToLookup(ref: SessionBulkMutationRef): PiSessionLookup {
|
|
return ref.cwd === undefined ? ref.id : { id: ref.id, cwd: ref.cwd };
|
|
}
|
|
|
|
function findArchivedRecordForBulkRef(records: readonly ArchivedSessionRecord[], ref: SessionBulkMutationRef): ArchivedSessionRecord | undefined {
|
|
return records.find((record) => (ref.cwd === undefined || record.cwd === ref.cwd) && (record.sessionId === ref.id || record.sessionId.startsWith(ref.id)));
|
|
}
|
|
|
|
function findListedSessionForBulkRef(context: BulkSessionLookupContext, ref: SessionBulkMutationRef): PiSessionListEntry | undefined {
|
|
if (ref.cwd !== undefined) return findSessionByIdOrPrefix(context.sessionsByCwd.get(ref.cwd) ?? [], ref.id);
|
|
return context.allSessions === undefined ? undefined : findSessionByIdOrPrefix(context.allSessions, ref.id);
|
|
}
|
|
|
|
function findSessionByIdOrPrefix(sessions: readonly PiSessionListEntry[], sessionId: string): PiSessionListEntry | undefined {
|
|
return sessions.find((session) => session.id === sessionId) ?? sessions.find((session) => session.id.startsWith(sessionId));
|
|
}
|
|
|
|
function uniqueStrings(values: readonly string[]): string[] {
|
|
return [...new Set(values)];
|
|
}
|
|
|
|
function errorMessage(error: unknown): string {
|
|
return error instanceof Error ? error.message : String(error);
|
|
}
|
|
|
|
function modelToClientModel(model: PiAgentSession["model"]): ClientSessionModel {
|
|
if (model === undefined) return {};
|
|
const name = getString(model, "name");
|
|
const reasoning = getProperty(model, "reasoning");
|
|
return {
|
|
provider: model.provider,
|
|
id: model.id,
|
|
...(name === undefined ? {} : { name }),
|
|
contextWindow: model.contextWindow,
|
|
...(reasoning === undefined ? {} : { reasoning }),
|
|
};
|
|
}
|
|
|
|
function notificationIdentityForSession(session: PiAgentSession): { sessionId: string; cwd: string } {
|
|
return {
|
|
sessionId: session.sessionId,
|
|
cwd: canonicalizeStoredCwd(session.sessionManager.getCwd()),
|
|
};
|
|
}
|
|
|
|
function clientSessionFromListEntry(session: PiSessionListEntry): ClientSession {
|
|
return {
|
|
id: session.id,
|
|
path: session.path,
|
|
cwd: session.cwd,
|
|
persisted: true,
|
|
...(session.name === undefined ? {} : { name: session.name }),
|
|
created: session.created.toISOString(),
|
|
modified: session.modified.toISOString(),
|
|
messageCount: session.messageCount,
|
|
firstMessage: session.firstMessage,
|
|
...(session.parentSessionPath === undefined ? {} : { parentSessionPath: session.parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveInputFromListEntry(session: PiSessionListEntry): ArchiveSessionInput {
|
|
return {
|
|
sessionId: session.id,
|
|
cwd: session.cwd,
|
|
path: session.path,
|
|
created: session.created.toISOString(),
|
|
modified: session.modified.toISOString(),
|
|
messageCount: session.messageCount,
|
|
firstMessage: session.firstMessage,
|
|
...(session.name === undefined ? {} : { name: session.name }),
|
|
...(session.parentSessionPath === undefined ? {} : { parentSessionPath: session.parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveInputFromActiveSession(session: PiAgentSession): ArchiveSessionInput {
|
|
const sessionFile = session.sessionFile;
|
|
if (sessionFile === undefined || sessionFile === "") throw new Error("Session is not persisted");
|
|
const parentSessionPath = session.sessionManager.getHeader?.()?.parentSession;
|
|
return {
|
|
sessionId: session.sessionId,
|
|
cwd: session.sessionManager.getCwd(),
|
|
path: sessionFile,
|
|
created: new Date().toISOString(),
|
|
modified: new Date().toISOString(),
|
|
messageCount: session.messages.length,
|
|
firstMessage: "",
|
|
...(session.sessionName === undefined ? {} : { name: session.sessionName }),
|
|
...(parentSessionPath === undefined ? {} : { parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveCandidateFromListEntry(session: PiSessionListEntry): WorkspaceArchiveCandidate {
|
|
return {
|
|
id: session.id,
|
|
path: session.path,
|
|
cwd: session.cwd,
|
|
archived: false,
|
|
listEntry: session,
|
|
...(session.parentSessionPath === undefined ? {} : { parentSessionPath: session.parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveCandidateFromArchivedRecord(record: ArchivedSessionRecord, fallback: PiSessionListEntry | undefined): WorkspaceArchiveCandidate | undefined {
|
|
const path = record.originalPath ?? fallback?.path;
|
|
if (path === undefined) return undefined;
|
|
const parentSessionPath = record.parentSessionPath ?? fallback?.parentSessionPath;
|
|
return {
|
|
id: record.sessionId,
|
|
path,
|
|
cwd: record.cwd,
|
|
archived: true,
|
|
...(fallback === undefined ? {} : { listEntry: fallback }),
|
|
...(parentSessionPath === undefined ? {} : { parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveCandidateFromActiveSession(session: PiAgentSession, archived: boolean): WorkspaceArchiveCandidate {
|
|
const sessionFile = session.sessionFile;
|
|
if (sessionFile === undefined || sessionFile === "") throw new Error("Session is not persisted");
|
|
const parentSessionPath = session.sessionManager.getHeader?.()?.parentSession;
|
|
return {
|
|
id: session.sessionId,
|
|
path: sessionFile,
|
|
cwd: session.sessionManager.getCwd(),
|
|
archived,
|
|
activeSession: session,
|
|
...(parentSessionPath === undefined ? {} : { parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveInputFromCandidate(candidate: WorkspaceArchiveCandidate): ArchiveSessionInput {
|
|
if (candidate.listEntry !== undefined) return archiveInputFromListEntry(candidate.listEntry);
|
|
if (candidate.activeSession !== undefined) return archiveInputFromActiveSession(candidate.activeSession);
|
|
throw new Error(`Session is not available for archiving: ${candidate.id}`);
|
|
}
|
|
|
|
function sessionHasActiveWork(session: PiAgentSession, extraQueuedMessageCount = 0): boolean {
|
|
return session.isStreaming || session.isCompacting || session.isBashRunning || session.pendingMessageCount + extraQueuedMessageCount > 0;
|
|
}
|
|
|
|
function sessionDisplayName(session: PiAgentSession): string {
|
|
return session.sessionName ?? session.sessionId;
|
|
}
|
|
|
|
function clientSessionFromArchivedRecord(record: ArchivedSessionRecord, fallback: PiSessionListEntry | undefined): ClientSession | undefined {
|
|
const path = record.originalPath ?? fallback?.path;
|
|
const created = record.created ?? fallback?.created.toISOString();
|
|
const modified = record.modified ?? fallback?.modified.toISOString();
|
|
const messageCount = record.messageCount ?? fallback?.messageCount;
|
|
const firstMessage = record.firstMessage ?? fallback?.firstMessage;
|
|
if (path === undefined || created === undefined || modified === undefined || messageCount === undefined || firstMessage === undefined) return undefined;
|
|
const name = record.name ?? fallback?.name;
|
|
const parentSessionPath = record.parentSessionPath ?? fallback?.parentSessionPath;
|
|
return {
|
|
id: record.sessionId,
|
|
path,
|
|
cwd: record.cwd,
|
|
...(name === undefined ? {} : { name }),
|
|
created,
|
|
modified,
|
|
messageCount,
|
|
firstMessage,
|
|
...(parentSessionPath === undefined ? {} : { parentSessionPath }),
|
|
archived: true,
|
|
archivedAt: record.archivedAt,
|
|
};
|
|
}
|
|
|
|
function addSessionName(names: Set<string>, name: string | undefined): void {
|
|
const trimmed = name?.replace(/\s+/g, " ").trim();
|
|
if (trimmed !== undefined && trimmed !== "") names.add(trimmed);
|
|
}
|
|
|
|
function compareArchivedRecords(a: ArchivedSessionRecord, b: ArchivedSessionRecord): number {
|
|
return archivedTimestamp(b) - archivedTimestamp(a);
|
|
}
|
|
|
|
function archivedTimestamp(record: ArchivedSessionRecord): number {
|
|
const time = Date.parse(record.archivedAt);
|
|
return Number.isNaN(time) ? 0 : time;
|
|
}
|
|
|
|
function isDefined<T>(value: T | undefined): value is T {
|
|
return value !== undefined;
|
|
}
|
|
|
|
interface TrackedSubsessionSessionIdentity {
|
|
sessionId: string;
|
|
sessionFile: string | undefined;
|
|
sessionManager: PiSessionManager;
|
|
cwd: string;
|
|
}
|
|
|
|
/**
|
|
* Resolve the delegation capability from server-owned, persisted session
|
|
* provenance. A copied marker is not enough: the child header and reciprocal
|
|
* parent link must identify the exact same session files.
|
|
*/
|
|
export async function sessionAllowsDelegationTools(
|
|
sessionManager: PiSessionManager,
|
|
managers: Pick<PiSessionManagerGateway, "open">,
|
|
): Promise<boolean> {
|
|
const trackedLink = await verifiedTrackedSubsessionLink(managers, {
|
|
sessionId: sessionManager.getSessionId(),
|
|
sessionFile: sessionManager.getSessionFile(),
|
|
sessionManager,
|
|
cwd: sessionManager.getCwd(),
|
|
});
|
|
return trackedLink === undefined;
|
|
}
|
|
|
|
async function verifiedTrackedSubsessionLink(
|
|
managers: Pick<PiSessionManagerGateway, "open">,
|
|
session: TrackedSubsessionSessionIdentity,
|
|
): Promise<TrackedSubsessionLink | undefined> {
|
|
// Child markers are only hints; the current child header and reciprocal
|
|
// parent custom link must agree on the exact ids and files before relinking.
|
|
const entries = session.sessionManager.getEntries?.() ?? session.sessionManager.getBranch();
|
|
let marker: PersistedChildSubsessionLink | undefined;
|
|
for (const entry of entries) {
|
|
const parsed = parsePersistedChildSubsessionLink(entry);
|
|
if (parsed?.spawnedSessionId === session.sessionId) marker = parsed;
|
|
}
|
|
if (marker === undefined) return undefined;
|
|
|
|
const childSessionFile = nonEmptyString(session.sessionFile);
|
|
if (childSessionFile === undefined) return undefined;
|
|
const childHeader = await readSessionHeaderSummary(childSessionFile);
|
|
if (childHeader?.id !== session.sessionId) return undefined;
|
|
const parentSessionFile = nonEmptyString(childHeader.parentSession);
|
|
if (parentSessionFile === undefined) return undefined;
|
|
const parentHeader = await readSessionHeaderSummary(parentSessionFile);
|
|
if (parentHeader?.id !== marker.spawnedBySessionId) return undefined;
|
|
|
|
const parentLink = findReciprocalParentSubsessionLink(
|
|
managers,
|
|
parentSessionFile,
|
|
marker.spawnedBySessionId,
|
|
session.sessionId,
|
|
childSessionFile,
|
|
);
|
|
if (parentLink === undefined) return undefined;
|
|
return {
|
|
parentSessionId: marker.spawnedBySessionId,
|
|
childSessionId: session.sessionId,
|
|
childSessionFile,
|
|
parentSessionFile,
|
|
cwd: parentLink.cwd ?? session.cwd,
|
|
};
|
|
}
|
|
|
|
function findReciprocalParentSubsessionLink(
|
|
managers: Pick<PiSessionManagerGateway, "open">,
|
|
parentSessionFile: string,
|
|
parentSessionId: string,
|
|
childSessionId: string,
|
|
childSessionFile: string,
|
|
): PersistedParentSubsessionLink | undefined {
|
|
let parentManager: PiSessionManager;
|
|
try {
|
|
parentManager = managers.open(parentSessionFile);
|
|
} catch {
|
|
return undefined;
|
|
}
|
|
const entries = parentManager.getEntries?.() ?? parentManager.getBranch();
|
|
for (const entry of entries) {
|
|
const link = parsePersistedParentSubsessionLink(entry);
|
|
if (link === undefined) continue;
|
|
if (link.spawnedBySessionId !== parentSessionId || link.spawnedSessionId !== childSessionId) continue;
|
|
if (link.spawnedSessionFile === undefined || !sessionPathsEqual(link.spawnedSessionFile, childSessionFile)) continue;
|
|
return link;
|
|
}
|
|
return undefined;
|
|
}
|
|
|
|
function trackedSubsessionLinkFromParentLink(parentSessionId: string, link: PersistedParentSubsessionLink, parentSessionFile: string): TrackedSubsessionLink {
|
|
return {
|
|
parentSessionId,
|
|
childSessionId: link.spawnedSessionId,
|
|
...(link.spawnedSessionFile === undefined ? {} : { childSessionFile: link.spawnedSessionFile }),
|
|
parentSessionFile,
|
|
...(link.cwd === undefined ? {} : { cwd: link.cwd }),
|
|
};
|
|
}
|
|
|
|
function persistedParentSubsessionLinkData(link: TrackedSubsessionLink): Record<string, unknown> {
|
|
return {
|
|
version: 1,
|
|
spawnedBySessionId: link.parentSessionId,
|
|
spawnedSessionId: link.childSessionId,
|
|
...(link.childSessionFile === undefined ? {} : { spawnedSessionFile: link.childSessionFile }),
|
|
...(link.cwd === undefined ? {} : { cwd: link.cwd }),
|
|
};
|
|
}
|
|
|
|
function persistedChildSubsessionLinkData(parentSessionId: string, childSessionId: string): Record<string, unknown> {
|
|
return {
|
|
version: 1,
|
|
spawnedBySessionId: parentSessionId,
|
|
spawnedSessionId: childSessionId,
|
|
};
|
|
}
|
|
|
|
function parsePersistedParentSubsessionLink(entry: unknown): PersistedParentSubsessionLink | undefined {
|
|
if (!isRecord(entry) || entry["type"] !== "custom" || entry["customType"] !== SUBSESSION_LINK_CUSTOM_TYPE) return undefined;
|
|
const data = entry["data"];
|
|
if (!isRecord(data)) return undefined;
|
|
const spawnedBySessionId = getString(data, "spawnedBySessionId");
|
|
const spawnedSessionId = getString(data, "spawnedSessionId");
|
|
if (spawnedBySessionId === undefined || spawnedBySessionId === "" || spawnedSessionId === undefined || spawnedSessionId === "") return undefined;
|
|
const spawnedSessionFile = getString(data, "spawnedSessionFile");
|
|
const cwd = getString(data, "cwd");
|
|
return {
|
|
spawnedBySessionId,
|
|
spawnedSessionId,
|
|
...(spawnedSessionFile === undefined || spawnedSessionFile === "" ? {} : { spawnedSessionFile }),
|
|
...(cwd === undefined || cwd === "" ? {} : { cwd }),
|
|
};
|
|
}
|
|
|
|
function parsePersistedChildSubsessionLink(entry: unknown): PersistedChildSubsessionLink | undefined {
|
|
if (!isRecord(entry) || entry["type"] !== "custom" || entry["customType"] !== SUBSESSION_CHILD_LINK_CUSTOM_TYPE) return undefined;
|
|
const data = entry["data"];
|
|
if (!isRecord(data)) return undefined;
|
|
const spawnedBySessionId = getString(data, "spawnedBySessionId");
|
|
const spawnedSessionId = getString(data, "spawnedSessionId");
|
|
if (spawnedBySessionId === undefined || spawnedBySessionId === "" || spawnedSessionId === undefined || spawnedSessionId === "") return undefined;
|
|
return { spawnedBySessionId, spawnedSessionId };
|
|
}
|
|
|
|
function nonEmptyString(value: string | undefined): string | undefined {
|
|
return value === undefined || value === "" ? undefined : value;
|
|
}
|
|
|
|
function subsessionHydratedParentKey(parentSessionId: string, parentSessionFile: string | undefined): string {
|
|
return `${parentSessionId}\0${parentSessionFile ?? ""}`;
|
|
}
|
|
|
|
function sessionPathsEqual(a: string, b: string): boolean {
|
|
return cwdPathsEqual(a, b);
|
|
}
|
|
|
|
function sessionFileExists(sessionFile: string | undefined): sessionFile is string {
|
|
if (sessionFile === undefined || sessionFile === "") return false;
|
|
try {
|
|
return statSync(sessionFile).isFile();
|
|
} catch {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function sessionFileMatches(session: PiAgentSession, expectedSessionFile: string | undefined): boolean {
|
|
const sessionFile = nonEmptyString(session.sessionFile);
|
|
return sessionFile !== undefined && expectedSessionFile !== undefined && sessionPathsEqual(sessionFile, expectedSessionFile);
|
|
}
|
|
|
|
function activeSessionFileMatches(active: ActiveSession<PiSessionRuntime>, expectedSessionFile: string | undefined): boolean {
|
|
return sessionFileMatches(active.runtime.session, expectedSessionFile);
|
|
}
|
|
|
|
function trackedLinkParentFileMatches(link: TrackedSubsessionLink, parentSessionFile: string): boolean {
|
|
return link.parentSessionFile !== undefined && sessionPathsEqual(link.parentSessionFile, parentSessionFile);
|
|
}
|
|
|
|
interface SessionHeaderSummary {
|
|
id: string;
|
|
parentSession?: string;
|
|
}
|
|
|
|
async function readSessionHeaderSummary(sessionFile: string): Promise<SessionHeaderSummary | undefined> {
|
|
let file: Awaited<ReturnType<typeof open>> | undefined;
|
|
try {
|
|
file = await open(sessionFile, "r");
|
|
const buffer = Buffer.alloc(4096);
|
|
const { bytesRead } = await file.read(buffer, 0, buffer.length, 0);
|
|
const firstLine = buffer.toString("utf8", 0, bytesRead).split("\n", 1)[0];
|
|
if (firstLine === undefined || firstLine === "") return undefined;
|
|
const header: unknown = JSON.parse(firstLine);
|
|
if (!isRecord(header) || header["type"] !== "session" || typeof header["id"] !== "string") return undefined;
|
|
const parentSession = getString(header, "parentSession");
|
|
return { id: header["id"], ...(parentSession === undefined ? {} : { parentSession }) };
|
|
} catch {
|
|
return undefined;
|
|
} finally {
|
|
await file?.close().catch(() => undefined);
|
|
}
|
|
}
|
|
|
|
async function sessionFileHeaderMatches(sessionFile: string, expected: { sessionId: string; parentSessionFile?: string | undefined }): Promise<boolean> {
|
|
const header = await readSessionHeaderSummary(sessionFile);
|
|
if (header?.id !== expected.sessionId) return false;
|
|
if (expected.parentSessionFile === undefined) return true;
|
|
return header.parentSession !== undefined && sessionPathsEqual(header.parentSession, expected.parentSessionFile);
|
|
}
|
|
|
|
async function clearParentSession(sessionFile: string): Promise<void> {
|
|
const content = await readFile(sessionFile, "utf8");
|
|
const newlineIndex = content.indexOf("\n");
|
|
const firstLine = newlineIndex === -1 ? content : content.slice(0, newlineIndex);
|
|
const rest = newlineIndex === -1 ? "" : content.slice(newlineIndex);
|
|
const header: unknown = JSON.parse(firstLine);
|
|
if (!isRecord(header) || header["type"] !== "session") throw new Error("Invalid session file header");
|
|
if (header["parentSession"] === undefined) return;
|
|
delete header["parentSession"];
|
|
await writeFile(sessionFile, `${JSON.stringify(header)}${rest}`, "utf8");
|
|
}
|
|
|
|
function clearParentSessionHeader(sessionManager: PiSessionManager): void {
|
|
const header = sessionManager.getHeader?.();
|
|
if (header !== undefined && header !== null) delete header.parentSession;
|
|
}
|
|
|
|
function clearSessionQueue(session: PiAgentSession): void {
|
|
session.clearQueue();
|
|
}
|
|
|
|
function queuedMessagesFromSession(session: PiAgentSession, extraQueuedMessages: readonly QueuedPrompt[] = []): { kind: "steer" | "followUp"; text: string }[] {
|
|
return [
|
|
...session.getSteeringMessages().map((text) => ({ kind: "steer" as const, text })),
|
|
...session.getFollowUpMessages().map((text) => ({ kind: "followUp" as const, text })),
|
|
...extraQueuedMessages,
|
|
];
|
|
}
|
|
|
|
function userTextMessage(text: string): { role: "user"; content: string } {
|
|
return { role: "user", content: text };
|
|
}
|
|
|
|
/**
|
|
* Build the optimistic user message echoed to clients. When images are present
|
|
* we mirror pi's content-array shape (`[{type:"text"}, {type:"image"}, ...]`) so
|
|
* the local echo matches what pi persists in the session branch.
|
|
*/
|
|
function userMessage(text: string, images: ImageContent[]): { role: "user"; content: string | (ImageContent | { type: "text"; text: string })[] } {
|
|
if (images.length === 0) return userTextMessage(text);
|
|
const content: (ImageContent | { type: "text"; text: string })[] = [];
|
|
if (text !== "") content.push({ type: "text", text });
|
|
content.push(...images);
|
|
return { role: "user", content };
|
|
}
|
|
|
|
function buildPromptOptions(behavior: QueuedPromptKind | undefined, images: ImageContent[]): { streamingBehavior?: "steer" | "followUp"; images?: ImageContent[] } | undefined {
|
|
const options: { streamingBehavior?: "steer" | "followUp"; images?: ImageContent[] } = {};
|
|
if (behavior !== undefined) options.streamingBehavior = behavior;
|
|
if (images.length > 0) options.images = images;
|
|
return Object.keys(options).length > 0 ? options : undefined;
|
|
}
|
|
|
|
function stringValue(value: unknown): string {
|
|
return typeof value === "string" ? value : "";
|
|
}
|
|
|
|
function historyMessages(session: PiAgentSession): unknown[] {
|
|
const messages: unknown[] = [];
|
|
for (const entry of session.sessionManager.getBranch()) {
|
|
if (!isRecord(entry)) continue;
|
|
if (entry["type"] === "message") messages.push(entry["message"]);
|
|
else if (entry["type"] === "custom_message" && entry["display"] === true) messages.push({ role: "custom", content: entry["content"], customType: entry["customType"], details: entry["details"] });
|
|
else if (entry["type"] === "compaction") messages.push({ role: "system", source: "compaction", content: `Compacted history:\n\n${stringValue(entry["summary"])}` });
|
|
else if (entry["type"] === "branch_summary") messages.push({ role: "system", source: "branch_summary", content: `Branch summary:\n\n${stringValue(entry["summary"])}` });
|
|
}
|
|
return messages;
|
|
}
|
|
|
|
/** custom entry type used to persist parent -> child subsession links outside LLM context. */
|
|
const SUBSESSION_LINK_CUSTOM_TYPE = "pi-web.subsession.link";
|
|
|
|
/** custom entry type used to mark a child as created by spawn_subsession. */
|
|
const SUBSESSION_CHILD_LINK_CUSTOM_TYPE = "pi-web.subsession.spawned";
|
|
|
|
/** customType marking a parent-facing subsession-completion notice. */
|
|
const SUBSESSION_NOTIFICATION_CUSTOM_TYPE = "subsession.completion";
|
|
|
|
const SUBSESSION_NOTIFICATION_MAX_OUTPUT_CHARS = 2000;
|
|
|
|
/** Avoid duplicating a partial result in context when deliberate inspection can return the full output. */
|
|
function formatSubsessionNotificationOutput(childSessionId: string, text: string): string {
|
|
if (text.length > SUBSESSION_NOTIFICATION_MAX_OUTPUT_CHARS) {
|
|
return `Output from subsession ${childSessionId} was too long for this completion notice and was omitted. Call check_subsession with sessionId "${childSessionId}" to retrieve the final output.`;
|
|
}
|
|
return `--- SUBSESSION OUTPUT: ${childSessionId} ---\n${text === "" ? "(no output)" : text}`;
|
|
}
|
|
|
|
/** Most recent assistant text from a history message list, or "" if none. */
|
|
function finalAssistantText(messages: readonly unknown[]): string {
|
|
for (let i = messages.length - 1; i >= 0; i--) {
|
|
const message = messages[i];
|
|
if (!isRecord(message) || message["role"] !== "assistant") continue;
|
|
const content = message["content"];
|
|
if (typeof content === "string") return content;
|
|
if (!Array.isArray(content)) continue;
|
|
const texts: string[] = [];
|
|
for (const part of content) {
|
|
if (isRecord(part) && part["type"] === "text" && typeof part["text"] === "string") texts.push(part["text"]);
|
|
}
|
|
if (texts.length > 0) return texts.join("\n").trim();
|
|
}
|
|
return "";
|
|
}
|
|
|
|
function toClientEvent(event: unknown): SessionUiEvent {
|
|
const eventType = getString(event, "type");
|
|
const assistantMessageEvent = getProperty(event, "assistantMessageEvent");
|
|
if (eventType === "message_update" && getString(assistantMessageEvent, "type") === "text_delta") {
|
|
return { type: "assistant.delta", text: getString(assistantMessageEvent, "delta") ?? "" };
|
|
}
|
|
if (eventType === "message_update" && getString(assistantMessageEvent, "type") === "thinking_delta") {
|
|
return { type: "assistant.thinking.delta", text: getString(assistantMessageEvent, "delta") ?? "" };
|
|
}
|
|
if (eventType === "tool_execution_start") {
|
|
const args = getProperty(event, "args");
|
|
return { type: "tool.start", toolName: getString(event, "toolName") ?? "", toolCallId: getString(event, "toolCallId") ?? "", summary: summarizeToolArgs(args), args };
|
|
}
|
|
if (eventType === "tool_execution_update") {
|
|
const partialResult = getProperty(event, "partialResult");
|
|
return { type: "tool.update", toolName: getString(event, "toolName") ?? "", toolCallId: getString(event, "toolCallId") ?? "", text: stringifyToolResult(partialResult), content: toolResultContent(partialResult), details: toolResultDetails(partialResult) };
|
|
}
|
|
if (eventType === "tool_execution_end") {
|
|
const result = getProperty(event, "result");
|
|
return { type: "tool.end", toolName: getString(event, "toolName") ?? "", toolCallId: getString(event, "toolCallId") ?? "", text: stringifyToolResult(result), content: toolResultContent(result), details: toolResultDetails(result), isError: getBoolean(event, "isError") === true };
|
|
}
|
|
if (eventType === "agent_start") return { type: "agent.start" };
|
|
if (eventType === "agent_end") return { type: "agent.end" };
|
|
if (eventType === "message_end") {
|
|
const message = getProperty(event, "message");
|
|
return message === undefined ? { type: "message.end" } : { type: "message.end", message };
|
|
}
|
|
return { type: "pi.event", eventType: eventType ?? "unknown" };
|
|
}
|
|
|
|
function summarizeToolArgs(args: unknown): string {
|
|
if (!isRecord(args)) return stringifyPrimitive(args);
|
|
const command = getString(args, "command");
|
|
if (command !== undefined) return command;
|
|
const path = getString(args, "path");
|
|
if (path !== undefined) return path;
|
|
if (typeof args["oldText"] === "string" && typeof args["newText"] === "string") return "edit text replacement";
|
|
const edits = args["edits"];
|
|
if (Array.isArray(edits)) return `${String(edits.length)} edit${edits.length === 1 ? "" : "s"}`;
|
|
const entries = Object.entries(args).filter(([, value]) => value != null).slice(0, 3);
|
|
return entries.map(([key, value]) => `${key}: ${shortToolValue(value)}`).join(" · ");
|
|
}
|
|
|
|
function shortToolValue(value: unknown): string {
|
|
if (typeof value === "string") return value.length > 80 ? `${value.slice(0, 77)}…` : value;
|
|
if (typeof value === "number" || typeof value === "boolean") return String(value);
|
|
if (Array.isArray(value)) return `${String(value.length)} item${value.length === 1 ? "" : "s"}`;
|
|
if (typeof value === "object" && value !== null) return "object";
|
|
return "";
|
|
}
|
|
|
|
function toolResultContent(result: unknown): unknown {
|
|
if (isRecord(result)) {
|
|
const content = getProperty(result, "content");
|
|
if (content !== undefined) return content;
|
|
const text = getString(result, "text") ?? getString(result, "output");
|
|
if (text !== undefined) return [{ type: "text", text }];
|
|
}
|
|
if (typeof result === "string") return [{ type: "text", text: result }];
|
|
return result;
|
|
}
|
|
|
|
function toolResultDetails(result: unknown): unknown {
|
|
return isRecord(result) ? getProperty(result, "details") : undefined;
|
|
}
|
|
|
|
function stringifyToolResult(result: unknown): string {
|
|
if (typeof result === "string") return result;
|
|
if (Array.isArray(result)) return result.map(stringifyToolResult).filter((text) => text !== "").join("\n");
|
|
if (isRecord(result)) {
|
|
if (getString(result, "type") === "image") return "[image]";
|
|
const text = getString(result, "text") ?? getString(result, "content") ?? getString(result, "output");
|
|
if (text !== undefined) return text;
|
|
const content = getProperty(result, "content");
|
|
if (Array.isArray(content)) return stringifyToolResult(content);
|
|
return JSON.stringify(result, null, 2);
|
|
}
|
|
return stringifyPrimitive(result);
|
|
}
|
|
|
|
function isRecord(value: unknown): value is Record<string, unknown> {
|
|
return typeof value === "object" && value !== null;
|
|
}
|
|
|
|
function getProperty(value: unknown, key: string): unknown {
|
|
return isRecord(value) ? value[key] : undefined;
|
|
}
|
|
|
|
function getString(value: unknown, key: string): string | undefined {
|
|
const property = getProperty(value, key);
|
|
return typeof property === "string" ? property : undefined;
|
|
}
|
|
|
|
function getBoolean(value: unknown, key: string): boolean | undefined {
|
|
const property = getProperty(value, key);
|
|
return typeof property === "boolean" ? property : undefined;
|
|
}
|
|
|
|
function stringifyPrimitive(value: unknown): string {
|
|
if (value == null) return "";
|
|
if (typeof value === "string") return value;
|
|
if (typeof value === "number" || typeof value === "boolean" || typeof value === "bigint") return String(value);
|
|
return "";
|
|
}
|