mirror of
https://github.com/deepseek-ai/deepseek-harness
synced 2026-08-15 21:04:50 +00:00
2752 lines
117 KiB
TypeScript
2752 lines
117 KiB
TypeScript
/**
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* Host-side ApiProxy implementation. Signature discipline: unary takes the
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* narrow RpcRequest<P> and echoes request.rpcId on the RpcResponse<T>.
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*/
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import { randomUUID } from 'node:crypto'
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import { mkdir, stat } from 'node:fs/promises'
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import { join } from 'node:path'
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import type { Context } from 'cordis'
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import { installAgentLlmTarget } from '@deepseek-ai/dsh-agent'
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import type {
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Agent, AgentLlmTarget, AgentLlmTargetRef, AgentStatus, InboxItem, InboxItemId,
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} from '@deepseek-ai/dsh-agent'
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import { createUserMessage, ReasoningEffortId } from '@deepseek-ai/dsh-llm'
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import { errorChain } from '@deepseek-ai/dsh-llm'
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import type { MessageSource } from '@deepseek-ai/dsh-llm'
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import { isAppendSurfaceEvent, lastActivityTime } from '@deepseek-ai/dsh-session'
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import type { Session, SessionEvent, SessionHeader, SessionId, UserMessage } from '@deepseek-ai/dsh-session'
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import type { SessionPersistence } from '@deepseek-ai/dsh-session-persistence'
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import { SessionQueryError, type SessionSearchCursor } from '@deepseek-ai/dsh-session-query'
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import { SubagentError } from '@deepseek-ai/dsh-subagent'
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import type { SubagentListEntry as CatalogSubagentListEntry } from '@deepseek-ai/dsh-subagent'
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import type { Workspace, WorkspaceRecord } from '@deepseek-ai/dsh-workspace'
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import {
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workspaceDomainState, workspaceRecord, WorkspaceId as brandWorkspaceId,
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WorkspaceMoveInvalidError, WorkspaceUnknownSessionError,
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} from '@deepseek-ai/dsh-workspace'
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// Type-only: brings the `ctx.tools` Context merge into this program (viewFor reads presenters).
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import type {} from '@deepseek-ai/dsh-tools'
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import type {
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ApiProxy, CredentialView, GoalRef, HistoryEntry, HostFrame, ModelCatalogFailure, ModelProviderGroup,
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ModelReasoning, MuxFrame, QuestionResponsePayload, SessionProjectionsBlock, SessionSearchItem,
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SessionSummary, SettingsNamespaceView, SubagentAddress, ToolEventView,
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WorkspaceId, WorkspaceView,
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} from './api/index.ts'
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import {
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SESSION_SEARCH_RESULT_LIMIT,
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SESSION_SEARCH_SNIPPET_MAX_CODE_POINTS,
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truncateUnicodeCodePoints,
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} from './api/session-search.ts'
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// Type-only: resolves `ctx.get('sessionProjections')` to the projection registry.
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import type {} from '@deepseek-ai/dsh-session-projection'
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// Type-only: resolves `ctx.get('sessionProjectionCache')` (the cold listing column).
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import type {} from '@deepseek-ai/dsh-session-projection-cache'
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// GoalError narrows domain rejections to their stable codes at the wire boundary.
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import { GoalError } from '@deepseek-ai/dsh-goal'
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import type { GoalRef as CoreGoalRef } from '@deepseek-ai/dsh-goal'
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// Type-only edges: resolve `ctx.get('commands')`, the `commands/change` event, and `ctx.get('skills')`.
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import type {} from '@deepseek-ai/dsh-commands'
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import type {} from '@deepseek-ai/dsh-skill'
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// The settings/credentials seams: brand guards run at this wire boundary; the
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// service reads stay optional (`ctx.get`) so a composition without either
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// provider still serves every other domain.
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import { SettingsConflictError, settingsNamespace } from '@deepseek-ai/dsh-settings'
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import type { SettingsDescriptor, SettingsNamespace, SettingsPathOp } from '@deepseek-ai/dsh-settings'
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import { credentialRef } from '@deepseek-ai/dsh-credentials'
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// Value edge: the rename impl narrows the title service's validation failure; the import also resolves `ctx.get('sessionTitle')`.
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import { SessionTitleInvalidError } from '@deepseek-ai/dsh-session-title'
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import type { CallId } from '@deepseek-ai/dsh-llm/brand'
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import type { ApprovalOutcome, ApprovalRequestId } from '@deepseek-ai/dsh-user-approval'
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// Side-effect type import: resolves the `approval/request` waterfall and
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// `ctx.get('approval')` without a value dependency on the seam (optional composition).
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import type {} from '@deepseek-ai/dsh-user-approval'
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import { approvalResponsePayloadSchema } from './api/approvals.schema.ts'
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import { questionResponsePayloadSchema } from './api/questions.schema.ts'
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import type { ClientResponse, RpcError, RpcReceipt, RpcRequest, RpcResponse } from './api/rpc.ts'
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import { RpcId } from './api/rpc.ts'
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import type {
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AskUserQuestionAnswer, AskUserQuestionItem, AskUserQuestionRequest,
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} from '@deepseek-ai/dsh-user-interaction'
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import { UserInteractionError } from '@deepseek-ai/dsh-user-interaction'
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import { DirectoryPickerError } from '@deepseek-ai/dsh-host-directory-picker'
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import { openNativePath } from './native-path-opener.ts'
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/** Page size when history is called without maxMessages. */
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const DEFAULT_MAX_MESSAGES = 50
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/** Non-model settings namespaces intentionally served to the Web client. */
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const WEB_SETTINGS_NAMESPACES = ['permission'] as const
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/** Provider work budget: at most 100 calls and 2,000 inspected hits. */
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const SESSION_SEARCH_PROVIDER_CALL_LIMIT = 100
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/** Bound cold-log stat fan-out and settle each started batch before cancellation returns. */
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const COLD_SUMMARY_BATCH_SIZE = 16
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/** Conversation message event types (the pagination counting unit). */
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const MESSAGE_TYPES = new Set(['user/message', 'assistant/message', 'steering/message'])
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/** Product settings intentionally exposed beside model-provider namespaces. */
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const PRODUCT_SETTINGS_NAMESPACES = new Set(['ui-onboarding'])
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/** Read live abort state across awaits without treating it as synchronously immutable. */
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function isAborted(signal: AbortSignal): boolean {
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return signal.aborted
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}
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/**
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* Message-boundary pagination: count maxMessages append-origin messages
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* backwards from the window tail. Replacement copies never entered the
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* conversation a reader sees — they restate a shadowed range for the model
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* alone — so they consume no quota; the page stays one contiguous raw range,
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* which keeps a compaction's log-only provenance on the same page as its
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* replacement. The cut is the starting seq of the oldest message group (chunks
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* group via sourceEventSeqs — never cut mid-message). The tail page naturally
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* includes the in-progress partial.
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*/
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function paginate(
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events: readonly SessionEvent[],
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beforeSeq: number | undefined,
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maxMessages: number,
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): { events: SessionEvent[]; hasMore: boolean } {
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const window = beforeSeq === undefined ? [...events] : events.filter(event => event.seq < beforeSeq)
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let count = 0
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let cut = 0
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for (let i = window.length - 1; i >= 0; i--) {
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const event = window[i] as SessionEvent
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if (!MESSAGE_TYPES.has(event.type) || !isAppendSurfaceEvent(event)) continue
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count++
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const sources = (event as { sourceEventSeqs?: number[] }).sourceEventSeqs
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const groupStart = sources !== undefined && sources.length > 0 ? Math.min(event.seq, ...sources) : event.seq
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if (count >= maxMessages) {
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cut = groupStart
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break
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}
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}
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const page = window.filter(event => event.seq >= cut)
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return { events: page, hasMore: cut > 0 }
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}
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/** Wrap an ok result echoing the request's rpcId. */
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function ok<T>(request: RpcRequest<unknown>, value: T): RpcResponse<T> {
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return { rpcId: request.rpcId, result: { ok: true, value } }
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}
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/**
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* Build the provider/model catalog over every registered route. Shared by the
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* session-scoped `session.models` (which passes the session's current target
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* so an unlisted current model still renders selectable) and the host-scoped
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* `llm.models` (no current). Per-provider failures ride `failures` without
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* failing the sound groups; groups that advertise nothing are dropped.
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*/
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async function buildModelCatalog(
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ctx: Context,
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current?: { provider: string; model: string },
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): Promise<{ groups: ModelProviderGroup[]; failures: ModelCatalogFailure[] }> {
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const catalog = await Promise.all(ctx.llm.listProviders().map(async (provider) => {
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try {
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const advertised = await ctx.llm.listModels(provider.id)
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const models = [...advertised]
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if (
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current !== undefined
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&& provider.id === current.provider
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&& !models.some(model => model.id === current.model)
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) {
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models.push({
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provider: provider.id,
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id: current.model,
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name: current.model,
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})
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}
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const entries = await Promise.all(models.map(async (model) => {
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const resolved = await ctx.llm.resolveModelInfo(provider.id, model.id)
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const reasoning: ModelReasoning | undefined = resolved.reasoning === undefined
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? undefined
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: {
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efforts: resolved.reasoning.efforts.map(effort => ({
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id: effort.id,
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name: effort.name,
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...effort.description === undefined
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? {}
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: { description: effort.description },
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})),
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...resolved.reasoning.defaultEffort === undefined
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? {}
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: { defaultEffort: resolved.reasoning.defaultEffort },
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}
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return {
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id: model.id,
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name: model.name,
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...model.description === undefined ? {} : { description: model.description },
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...current !== undefined
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&& provider.id === current.provider
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&& model.id === current.model
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&& !advertised.some(candidate => candidate.id === current.model)
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? { unlisted: true as const }
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: {},
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...reasoning === undefined ? {} : { reasoning },
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}
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}))
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const group: ModelProviderGroup = {
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id: provider.id,
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name: provider.name,
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models: entries,
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}
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return { kind: 'group' as const, group }
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} catch (error: unknown) {
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const failure: ModelCatalogFailure = {
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id: provider.id,
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name: provider.name,
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message: error instanceof Error ? error.message : String(error),
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}
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return { kind: 'failure' as const, failure }
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}
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}))
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return {
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groups: catalog.flatMap(item => item.kind === 'group' ? [item.group] : []).filter(group => group.models.length > 0),
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failures: catalog.flatMap(item => item.kind === 'failure' ? [item.failure] : []),
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}
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}
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/** Wrap an error result echoing the request's rpcId. */
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function err<T>(request: RpcRequest<unknown>, error: RpcError): RpcResponse<T> {
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return { rpcId: request.rpcId, result: { ok: false, error } }
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}
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/** Simple async queue: core callbacks push, the AsyncIterable pulls; abort/return cleans up. */
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class FrameQueue<F> {
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private buffer: F[] = []
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private waiter: (() => void) | undefined
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private done = false
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push(item: F): void {
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if (this.done) return
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this.buffer.push(item)
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this.waiter?.()
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}
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end(): void {
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this.done = true
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this.waiter?.()
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}
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async *iterate(signal: AbortSignal, cleanup: () => void): AsyncGenerator<F> {
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const onAbort = (): void => { this.end() }
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signal.addEventListener('abort', onAbort, { once: true })
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try {
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while (true) {
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while (this.buffer.length > 0) yield this.buffer.shift() as F
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if (this.done || signal.aborted) return
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await new Promise<void>((resolve) => { this.waiter = resolve })
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this.waiter = undefined
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}
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} finally {
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signal.removeEventListener('abort', onAbort)
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cleanup()
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}
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}
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}
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/**
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* Server-side frame mint: pure pushes get a fresh rpcId per frame (answerable
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* frames — approval/question requested — mint their stable id in their
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* pending registries instead).
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*/
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function frame<F>(payload: F): RpcRequest<F> {
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return { rpcId: RpcId(randomUUID()), payload }
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}
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/** Queue the subscription baseline frame. */
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function subscribeSession(queue: FrameQueue<RpcRequest<MuxFrame>>, session: Session): void {
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queue.push(frame({ type: 'session/subscribed', sessionId: session.id, lastSeq: session.seq - 1 }))
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}
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/**
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* Whether the session's conversation has started: no turn has run yet (a
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* turn is one model-loop execution). Standalone plugin events — command
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* lifecycle records, plan/mode, titles, goals — never open a turn, so
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* running `/plan` or `/goal` on a fresh session keeps it blank
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* (list-hidden, reusable).
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*/
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function sessionBlank(session: Session): boolean {
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return !session.events.some(event => event.type === 'turn/start')
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}
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/** Shared Session-header projection for list baselines and creation frames. */
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function sessionListFields(header: SessionHeader): {
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parentSessionId?: SessionId
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origin?: 'subagent'
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cwd?: string
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} {
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return {
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...header.parentSession === undefined ? {} : { parentSessionId: header.parentSession },
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...header.origin === undefined ? {} : { origin: header.origin },
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...header.cwd === undefined ? {} : { cwd: header.cwd },
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}
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}
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/** SessionSummary projection for attached (in-memory) sessions. */
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function summarize(session: Session, running: boolean): SessionSummary {
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return {
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sessionId: session.id,
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// Excludes end-seed: a resumed-but-untouched session
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// must not sort as freshly worked in.
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updatedAt: lastActivityTime(session.events) ?? session.header.createdAt,
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running,
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blank: sessionBlank(session),
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...sessionListFields(session.header),
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}
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}
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/**
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* SessionSummary projection for cold (persisted, unattached) sessions.
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* updatedAt is the log file's mtime; backends without a per-session file
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* (locate() undefined) fall back to the header's createdAt.
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*/
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async function summarizeCold(
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persistence: SessionPersistence,
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meta: SessionHeader,
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signal?: AbortSignal,
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): Promise<SessionSummary> {
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signal?.throwIfAborted()
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let updatedAt = meta.createdAt
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const location = persistence.locate(meta)
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signal?.throwIfAborted()
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if (location !== undefined) {
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try {
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updatedAt = (await stat(location.path)).mtimeMs
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} catch {
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// The log vanished between list() and stat() (concurrent cleanup); createdAt stands in.
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}
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signal?.throwIfAborted()
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}
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return {
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sessionId: meta.id,
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updatedAt,
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running: false,
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// Lazy persistence keeps never-appended sessions out of list(); reading
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// a cold log to check for turns would defeat the index read, so a listed
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// cold session is served as not-blank (its log holds its conversation).
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blank: false,
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...meta.parentSession === undefined ? {} : { parentSessionId: meta.parentSession },
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...meta.origin === undefined ? {} : { origin: meta.origin },
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/* v8 ignore next -- the empty arm needs a cwd-less meta, but list()
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filters those out (legacy logs are not served); the conditional mirrors
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summarize() shape. */
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...meta.cwd === undefined ? {} : { cwd: meta.cwd },
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}
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}
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/** Map a browse-primitive failure onto the wire error vocabulary (unknown throws stay internal). */
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function directoryError(error: unknown): RpcError {
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if (error instanceof DirectoryPickerError) {
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return { code: error.code, message: error.message, details: { path: error.path } }
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}
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return { code: 'internal', message: error instanceof Error ? error.message : String(error), details: {} }
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}
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/** Resolved Host routing and project-directory defaults consumed by the API implementation. */
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export interface ApiProxyDefaults {
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provider: string
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model: string
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/** Default project directory for new sessions whose create request carries no cwd. */
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cwd: string
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/** Parent directory for name-created workspaces. */
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workspaceRoot: string
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/** Native open-with-default-application; injectable for carrier tests. */
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openPath?: (path: string, signal: AbortSignal) => Promise<void>
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}
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/** The tool/call payload fields the presenter path reads. */
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interface ToolCallData { callId: string; name: string; arguments: string }
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/**
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* One outstanding approval question: the stable server-request id, the frame
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* material replayed to late mux subscribers, and the resolver that settles the
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* answerer's promise back into `ctx.approval`.
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*/
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interface PendingApproval {
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rpcId: RpcId
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sessionId: SessionId
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approvalId: ApprovalRequestId
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toolName: string
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callId?: CallId
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reason?: string
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resolve(outcome: ApprovalOutcome): void
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}
|
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/** Project a pending entry into its answerable mux frame (initial push and mux-open replay share it). */
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function requestedFrame(pending: PendingApproval): RpcRequest<MuxFrame> {
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return {
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rpcId: pending.rpcId,
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payload: {
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type: 'approval/requested',
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sessionId: pending.sessionId,
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approvalId: pending.approvalId,
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toolName: pending.toolName,
|
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...pending.callId === undefined ? {} : { callId: pending.callId },
|
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...pending.reason === undefined ? {} : { reason: pending.reason },
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},
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}
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}
|
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/** One host-owned question wait, addressed by the stable server-request id. */
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interface PendingQuestion {
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rpcId: RpcId
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sessionId: SessionId
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questions: AskUserQuestionItem[]
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resolve: (answer: AskUserQuestionAnswer) => void
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|
reject: (error: UserInteractionError) => void
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signal?: AbortSignal
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onAbort?: () => void
|
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}
|
|
|
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/** Validate one answer batch against the exact question request it resolves. */
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|
function matchesQuestions(payload: QuestionResponsePayload, pending: PendingQuestion): boolean {
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if (payload.sessionId !== pending.sessionId) return false
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const answers = payload.answer.answers
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if (answers.length !== pending.questions.length) return false
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|
return answers.every((answer, index) => {
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const question = pending.questions[index] as AskUserQuestionItem
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|
if (answer.id !== question.id) return false
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|
if (new Set(answer.selected).size !== answer.selected.length) return false
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|
const custom = answer.custom?.trim()
|
|
if (custom !== undefined && custom === '') return false
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if (custom !== undefined && answer.selected.length > 0) return false
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if (question.multiSelect !== true && answer.selected.length > 1) return false
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const labels = new Set(question.options?.map(option => option.label) ?? [])
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return answer.selected.every(label => labels.has(label))
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})
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}
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|
|
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/**
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* Compute the render intent for a tool/call or tool/result event through the
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* presenters registered at this moment; every other event type gets none. A
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* result's presenter needs its call's parsed args — `argsFor` supplies them
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* (live: the per-session call table; history: an in-page backscan), returning
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* undefined when the pairing is unavailable (e.g. the call fell off the page),
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* which soft-falls to no view. Presenter or JSON.parse throws also soft-fall:
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* the client's documented default (generic JSON card) covers every miss.
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|
*/
|
|
function viewFor(ctx: Context, event: SessionEvent, argsFor: (callId: string) => unknown): ToolEventView | undefined {
|
|
try {
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|
if (event.type === 'tool/call') {
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const { name, arguments: raw } = event.data as ToolCallData
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|
const view = ctx.tools.get(name)?.presentCall?.(JSON.parse(raw))
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return view === undefined ? undefined : { for: 'call', view }
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}
|
|
if (event.type === 'tool/result') {
|
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const { message, meta } = event.data
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|
const [result] = message.content
|
|
const callId = message.source.callId
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const call = argsFor(callId) as { name: string; args: unknown } | undefined
|
|
if (call === undefined) return undefined
|
|
const view = ctx.tools.get(call.name)?.presentResult?.(call.args, {
|
|
content: result.content,
|
|
isError: result.isError === true,
|
|
...meta === undefined ? {} : { meta },
|
|
})
|
|
return view === undefined ? undefined : { for: 'result', view }
|
|
}
|
|
} catch (error: unknown) {
|
|
// A throwing presenter (or unparseable arguments) must not break delivery;
|
|
// the event still ships, just without a view.
|
|
console.error(`api-proxy: presenter failed for ${event.type}, falling back to generic: ${String(error)}`)
|
|
}
|
|
return undefined
|
|
}
|
|
|
|
/**
|
|
* Resolve a tool/result's call pairing by scanning a window of events backwards
|
|
* for the matching tool/call. Used by the history path (the page is the
|
|
* window — a cross-page pairing soft-falls to no view) and by live-path table
|
|
* misses after a reconnect-eviction.
|
|
*/
|
|
function backscanArgs(events: readonly SessionEvent[], callId: string): { name: string; args: unknown } | undefined {
|
|
for (let i = events.length - 1; i >= 0; i--) {
|
|
const event = events[i] as SessionEvent
|
|
if (event.type !== 'tool/call') continue
|
|
const data = event.data as ToolCallData
|
|
if (data.callId !== callId) continue
|
|
try {
|
|
return { name: data.name, args: JSON.parse(data.arguments) }
|
|
} catch {
|
|
// Unparseable stored arguments: same soft-fall as a live parse failure.
|
|
return undefined
|
|
}
|
|
}
|
|
return undefined
|
|
}
|
|
|
|
/** Render one detached history page through the same presenter path as ordinary history. */
|
|
function historyPage(
|
|
ctx: Context,
|
|
events: readonly SessionEvent[],
|
|
beforeSeq: number | undefined,
|
|
maxMessages: number | undefined,
|
|
): { events: HistoryEntry[]; hasMore: boolean } {
|
|
const page = paginate(events, beforeSeq, maxMessages ?? DEFAULT_MAX_MESSAGES)
|
|
return {
|
|
events: page.events.map((event) => {
|
|
const view = viewFor(ctx, event, callId => backscanArgs(page.events, callId))
|
|
return { event, ...view === undefined ? {} : { view } }
|
|
}),
|
|
hasMore: page.hasMore,
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The projection baseline for one history tail page: the registry's
|
|
* watermark-cache snapshot — one fully synchronous read (no await between the
|
|
* page slice and this), so all values and `asOfSeq` form a single consistent
|
|
* cut and `asOfSeq` equals the window tail event seq. The carrier holds zero
|
|
* domain knowledge (each value passed its unit's own schema inside the
|
|
* registry). An absent registry means the deployment has no projection seam:
|
|
* the whole block is absent and clients treat every key as capability-absent.
|
|
*/
|
|
function projectionsFor(ctx: Context, session: Session): SessionProjectionsBlock | undefined {
|
|
const registry = ctx.get('sessionProjections')
|
|
if (registry === undefined) return undefined
|
|
return registry.snapshot(session)
|
|
}
|
|
|
|
/**
|
|
* The projection baseline of one session.list row, fail-soft: attached
|
|
* sessions cut the registry's live watermark cache; cold sessions view the
|
|
* persisted projection cache's identity-checked stored rows (zero log loads
|
|
* either way — the listing use case the cache exists for). The block shape
|
|
* (values + asOfSeq) matches the history tail's, so a client seeds its
|
|
* value store under the same higher-seq-wins rule. Any failure — and an
|
|
* empty value set — yields an absent block: a listing without projections
|
|
* is degraded, never broken.
|
|
*/
|
|
function listProjectionsFor(ctx: Context, meta: SessionHeader, session: Session | undefined): SessionProjectionsBlock | undefined {
|
|
try {
|
|
const block = session !== undefined
|
|
? ctx.get('sessionProjections')?.snapshot(session)
|
|
: ctx.get('sessionProjectionCache')?.cachedSnapshot(meta)
|
|
return block !== undefined && Object.keys(block.values).length > 0 ? block : undefined
|
|
} catch (error) {
|
|
ctx.logger.warn(`session.list: projection column for "${meta.id}" failed (serving the row without it): ${String(error)}`)
|
|
return undefined
|
|
}
|
|
}
|
|
|
|
/** Projection baseline for a detached history tail without Agent activation. */
|
|
function detachedProjectionsFor(
|
|
ctx: Context,
|
|
events: readonly SessionEvent[],
|
|
): SessionProjectionsBlock | undefined {
|
|
const registry = ctx.get('sessionProjections')
|
|
if (registry === undefined) return undefined
|
|
return registry.restore({}, events, 0).snapshot
|
|
}
|
|
|
|
/** Map continuation admission failures without exposing provider details. */
|
|
function subagentPromptError(
|
|
request: RpcRequest<{ childSessionId: SessionId }>,
|
|
error: unknown,
|
|
signal: AbortSignal,
|
|
): RpcResponse<never> {
|
|
const childSessionId = request.payload.childSessionId
|
|
if (signal.aborted) {
|
|
return err(request, { code: 'cancelled', message: 'subagent prompt was cancelled', details: {} })
|
|
}
|
|
if (error instanceof SubagentError) {
|
|
switch (error.code) {
|
|
case 'NOT_RESUMABLE':
|
|
return err(request, {
|
|
code: 'subagent-not-resumable',
|
|
message: 'subagent cannot be resumed',
|
|
details: { childSessionId },
|
|
})
|
|
case 'UNAUTHORIZED':
|
|
return err(request, {
|
|
code: 'subagent-unauthorized',
|
|
message: 'subagent does not belong to this parent',
|
|
details: { childSessionId },
|
|
})
|
|
case 'DRAINING':
|
|
case 'ACTIVATION_CLOSING':
|
|
case 'CONTINUATION_UNAVAILABLE':
|
|
case 'PERSISTENCE_UNAVAILABLE':
|
|
return err(request, {
|
|
code: 'subagent-delivery-unavailable',
|
|
message: 'subagent follow-up is temporarily unavailable',
|
|
details: { childSessionId },
|
|
})
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
return err(request, { code: 'internal', message: 'subagent prompt failed', details: {} })
|
|
}
|
|
|
|
/** Verify one address and mode against the complete direct-child catalog. */
|
|
async function catalogChild(
|
|
ctx: Context,
|
|
address: SubagentAddress,
|
|
signal?: AbortSignal,
|
|
): Promise<{
|
|
entry?: Extract<CatalogSubagentListEntry, { kind: 'child' }>
|
|
error?: RpcError
|
|
}> {
|
|
const { parentSessionId, childSessionId, mode } = address
|
|
try {
|
|
const entries = await ctx.subagents.listChildren(parentSessionId, signal)
|
|
const entry = entries.find(candidate => candidate.id === childSessionId)
|
|
if (entry === undefined || (entry.kind === 'child' && entry.mode !== mode)) {
|
|
return {
|
|
error: {
|
|
code: 'subagent-not-found',
|
|
message: `session "${childSessionId}" is not a ${mode} direct child of "${parentSessionId}"`,
|
|
details: { parentSessionId, childSessionId },
|
|
},
|
|
}
|
|
}
|
|
if (entry.kind === 'diagnostic') {
|
|
return {
|
|
error: {
|
|
code: 'subagent-catalog-diagnostic',
|
|
message: `subagent "${childSessionId}" is ${entry.reason}`,
|
|
details: { parentSessionId, childSessionId, reason: entry.reason },
|
|
},
|
|
}
|
|
}
|
|
return { entry }
|
|
} catch (error: unknown) {
|
|
if (signal?.aborted
|
|
|| (error instanceof SubagentError && error.code === 'CANCELLED')
|
|
|| (error instanceof SessionQueryError && error.code === 'SESSION_QUERY_ABORTED')) {
|
|
return { error: { code: 'cancelled', message: 'subagent catalog read was cancelled', details: {} } }
|
|
}
|
|
if (error instanceof SessionQueryError && error.code === 'SESSION_QUERY_SESSION_NOT_FOUND') {
|
|
return {
|
|
error: {
|
|
code: 'subagent-not-found',
|
|
message: `parent session "${parentSessionId}" was not found`,
|
|
details: { parentSessionId, childSessionId },
|
|
},
|
|
}
|
|
}
|
|
return { error: { code: 'internal', message: 'subagent catalog read failed', details: {} } }
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Thrown by the cold-resume path when the id names no servable session
|
|
* (absent from the store, or a pre-project legacy log without a cwd).
|
|
*/
|
|
class SessionNotFound extends Error {}
|
|
|
|
/** Session identity whose lifecycle belongs to subagent routing, not generic Host resume. */
|
|
class SubagentSessionOwnership extends Error {
|
|
constructor(readonly sessionId: SessionId) {
|
|
super(`session "${sessionId}" is a subagent session; use subagent delivery`)
|
|
}
|
|
}
|
|
|
|
/** Requested identity already belongs to a session with another project cwd. */
|
|
class SessionCwdConflict extends Error {
|
|
constructor(
|
|
readonly sessionId: SessionId,
|
|
readonly requestedCwd: string,
|
|
readonly existingCwd: string | undefined,
|
|
) {
|
|
super(
|
|
`session "${sessionId}" already exists with cwd ${JSON.stringify(existingCwd)}; `
|
|
+ `requested ${JSON.stringify(requestedCwd)}`,
|
|
)
|
|
}
|
|
}
|
|
|
|
/** Host failed before the registry could adopt a name-created directory. */
|
|
class WorkspaceDirectoryCreationError extends Error {}
|
|
|
|
/** An explicit Host naming operation would duplicate another Workspace title. */
|
|
class WorkspaceNameConflictError extends Error {
|
|
constructor(readonly workspaceName: string) {
|
|
super(`workspace name '${workspaceName}' is already in use`)
|
|
this.name = 'WorkspaceNameConflictError'
|
|
}
|
|
}
|
|
|
|
/** Shared workspace-not-found error response of the workspace.* mutation rows. */
|
|
function workspaceNotFound<T>(request: RpcRequest<unknown>, workspaceId: string): RpcResponse<T> {
|
|
return err(request, {
|
|
code: 'workspace-not-found',
|
|
message: `workspace "${workspaceId}" not found`,
|
|
details: { workspaceId },
|
|
})
|
|
}
|
|
|
|
/** Wire projection of one workspace entity (the workspace.* value row). */
|
|
function workspaceView(workspace: Workspace): WorkspaceView {
|
|
return {
|
|
workspaceId: workspace.id,
|
|
path: workspace.path,
|
|
title: workspace.title,
|
|
sessionIds: [...workspace.sessionIds],
|
|
createdAt: workspace.createdAt,
|
|
updatedAt: workspace.updatedAt,
|
|
}
|
|
}
|
|
|
|
/** Wire projection of the durable record carried by `domain/changed`. */
|
|
function changedWorkspaceView(workspaceId: string, value: unknown): WorkspaceView {
|
|
const record: WorkspaceRecord = workspaceRecord.parse(value)
|
|
return {
|
|
workspaceId: workspaceId as WorkspaceId,
|
|
path: record.path,
|
|
title: record.title,
|
|
sessionIds: [...record.sessionIds],
|
|
createdAt: record.createdAt,
|
|
updatedAt: record.updatedAt,
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Implement ApiProxy over a composed host context.
|
|
* @param ctx - a context with the Host spine and Workspace registry mounted.
|
|
* @param defaults - host routing and project-directory defaults.
|
|
* @returns the ApiProxy implementation.
|
|
*/
|
|
export function createApiProxy(ctx: Context, defaults: ApiProxyDefaults): ApiProxy {
|
|
const agentOptions = { provider: defaults.provider, model: defaults.model }
|
|
type WebLlmTargetRef = AgentLlmTargetRef & { current: AgentLlmTarget }
|
|
const targets = new WeakMap<Agent, WebLlmTargetRef>()
|
|
/** Implicit resume of cold sessions, deduplicating concurrent calls (follows the jsonrpc sessionCreations precedent). */
|
|
const resumes = new Map<SessionId, Promise<Agent>>()
|
|
/** Client-chosen identity creation/resume, deduplicated across concurrent retries. */
|
|
const sessionCreations = new Map<SessionId, Promise<Agent>>()
|
|
/** Serializes path ownership and explicit title checks with Workspace mutations. */
|
|
let workspaceCreationChain = Promise.resolve()
|
|
const pendingQuestions = new Map<RpcId, PendingQuestion>()
|
|
const pendingApprovals = new Map<RpcId, PendingApproval>()
|
|
const muxQueues = new Set<FrameQueue<RpcRequest<MuxFrame>>>()
|
|
|
|
/**
|
|
* Install or return the session-local target that prompt assembly snapshots.
|
|
* Seed order: latest logged request/header, else the host default routing.
|
|
* There is no create-time per-session override tier on this wire — if one
|
|
* returns (a create-options contribution), it must fold in between the two.
|
|
*/
|
|
function targetFor(agent: Agent): WebLlmTargetRef {
|
|
const installed = targets.get(agent)
|
|
if (installed !== undefined) return installed
|
|
const logged = agent.session.requestHeader()?.config
|
|
const target: WebLlmTargetRef = {
|
|
current: logged === undefined
|
|
? { provider: defaults.provider, model: defaults.model }
|
|
: {
|
|
provider: logged.provider,
|
|
model: logged.model,
|
|
...logged.reasoningEffort === undefined
|
|
? {}
|
|
: { reasoningEffort: logged.reasoningEffort },
|
|
},
|
|
assembled: undefined,
|
|
}
|
|
installAgentLlmTarget(agent.ctx, target)
|
|
targets.set(agent, target)
|
|
return target
|
|
}
|
|
|
|
/** Pre-publication setup used by both fresh and resumed Web agents. */
|
|
function installTarget(agentCtx: Context): void {
|
|
const agent = agentCtx.agent
|
|
if (agent === undefined) throw new Error('api-proxy: agent setup has no scoped agent')
|
|
targetFor(agent)
|
|
}
|
|
|
|
/** Send one transient frame to every connected mux consumer. */
|
|
function broadcast(payload: MuxFrame): void {
|
|
const envelope = frame(payload)
|
|
for (const queue of muxQueues) queue.push(envelope)
|
|
}
|
|
|
|
// Projection change feed → session/projection push frames. The carrier
|
|
// mints the wire frame (the seam package holds no wire vocabulary); the
|
|
// child activates only when a projection registry is composed, and the
|
|
// subscription unwinds with this gateway's fiber.
|
|
ctx.inject(['sessionProjections'], (projectionCtx) => {
|
|
projectionCtx.sessionProjections.onChanged((session, key, value, seq) => {
|
|
broadcast({ type: 'session/projection', sessionId: session.id, key, value, seq })
|
|
})
|
|
})
|
|
|
|
/**
|
|
* Per-session pending-occurrence mirror serving live and mux-open
|
|
* `session/queue` snapshots. It carries both queued and steering placements.
|
|
* Each terminal inbox event retires one matching occurrence, so repeated
|
|
* sends of the same identified message remain visible until every occurrence
|
|
* is claimed.
|
|
*/
|
|
const queuedMirror = new Map<SessionId, InboxItem[]>()
|
|
type UnseenQueueEvent =
|
|
| { readonly kind: 'update'; readonly item: InboxItem }
|
|
| { readonly kind: 'terminal' }
|
|
const unseenQueueEvents = new Map<SessionId, Map<InboxItemId, UnseenQueueEvent>>()
|
|
const rememberUnseen = (sessionId: SessionId, itemId: InboxItemId, event: UnseenQueueEvent): void => {
|
|
let events = unseenQueueEvents.get(sessionId)
|
|
if (events === undefined) {
|
|
events = new Map()
|
|
unseenQueueEvents.set(sessionId, events)
|
|
}
|
|
events.set(itemId, event)
|
|
// Only synchronous re-entrancy may deliver a mutation before its outer
|
|
// enqueue observer. Drop unmatched protocol-invalid observations instead
|
|
// of retaining process-local ids indefinitely.
|
|
queueMicrotask(() => {
|
|
const current = unseenQueueEvents.get(sessionId)
|
|
if (current?.get(itemId) !== event) return
|
|
current.delete(itemId)
|
|
if (current.size === 0) unseenQueueEvents.delete(sessionId)
|
|
})
|
|
}
|
|
const takeUnseen = (sessionId: SessionId, itemId: InboxItemId): UnseenQueueEvent | undefined => {
|
|
const events = unseenQueueEvents.get(sessionId)
|
|
const event = events?.get(itemId)
|
|
if (event === undefined) return undefined
|
|
events?.delete(itemId)
|
|
if (events?.size === 0) unseenQueueEvents.delete(sessionId)
|
|
return event
|
|
}
|
|
const publishQueue = (sessionId: SessionId): void => {
|
|
const items = queuedMirror.get(sessionId) ?? []
|
|
broadcast({
|
|
type: 'session/queue',
|
|
sessionId,
|
|
items: items.map(item => ({
|
|
id: item.id,
|
|
placement: item.placement,
|
|
message: item.message,
|
|
})),
|
|
})
|
|
}
|
|
ctx.effect(() => {
|
|
const retireKnown = (sessionId: SessionId, itemId: InboxItemId): boolean => {
|
|
const entries = queuedMirror.get(sessionId)
|
|
if (entries === undefined) return false
|
|
const index = entries.findIndex(entry => entry.id === itemId)
|
|
if (index === -1) return false
|
|
entries.splice(index, 1)
|
|
if (entries.length === 0) queuedMirror.delete(sessionId)
|
|
return true
|
|
}
|
|
const retire = (agent: Agent, item: InboxItem): boolean => {
|
|
if (retireKnown(agent.id, item.id)) return true
|
|
rememberUnseen(agent.id, item.id, { kind: 'terminal' })
|
|
return false
|
|
}
|
|
const disposers = [
|
|
ctx.on('agent/inbox/enqueue', (agent: Agent, item: InboxItem) => {
|
|
const unseen = takeUnseen(agent.id, item.id)
|
|
if (unseen?.kind === 'terminal') return
|
|
let entries = queuedMirror.get(agent.id)
|
|
if (entries === undefined) {
|
|
entries = []
|
|
queuedMirror.set(agent.id, entries)
|
|
}
|
|
entries.push(unseen?.kind === 'update' ? unseen.item : item)
|
|
publishQueue(agent.id)
|
|
}),
|
|
ctx.on('agent/inbox/update', (agent: Agent, item: InboxItem) => {
|
|
const entries = queuedMirror.get(agent.id)
|
|
if (entries === undefined) {
|
|
rememberUnseen(agent.id, item.id, { kind: 'update', item })
|
|
return
|
|
}
|
|
const index = entries.findIndex(entry => entry.id === item.id)
|
|
if (index === -1) {
|
|
rememberUnseen(agent.id, item.id, { kind: 'update', item })
|
|
return
|
|
}
|
|
entries.splice(index, 1, item)
|
|
publishQueue(agent.id)
|
|
}),
|
|
ctx.on('agent/inbox/dequeue', (agent: Agent, item: InboxItem) => {
|
|
if (item.placement === 'steering') {
|
|
// AgentLoop appends the durable steering/message synchronously after
|
|
// this claim. Retain and retire the mirror row in the following
|
|
// microtask so any re-entrant snapshot and the Host's linear mux
|
|
// stream keep it visible until the durable event exists.
|
|
const present = queuedMirror.get(agent.id)?.some(entry => entry.id === item.id) === true
|
|
if (!present) {
|
|
retire(agent, item)
|
|
return
|
|
}
|
|
queueMicrotask(() => {
|
|
if (retireKnown(agent.id, item.id)) publishQueue(agent.id)
|
|
})
|
|
} else if (retire(agent, item)) {
|
|
// Queued claims have no durable same-message handoff to order.
|
|
// Publish retirement synchronously as before.
|
|
publishQueue(agent.id)
|
|
}
|
|
}),
|
|
ctx.on('agent/inbox/discard', (agent: Agent, items: InboxItem[]) => {
|
|
let changed = false
|
|
for (const item of items) changed = retire(agent, item) || changed
|
|
if (changed) publishQueue(agent.id)
|
|
}),
|
|
ctx.on('session/disposed', (session: Session) => {
|
|
queuedMirror.delete(session.id)
|
|
unseenQueueEvents.delete(session.id)
|
|
}),
|
|
]
|
|
return () => { for (const dispose of disposers) dispose() }
|
|
}, 'api-proxy: queued mirror')
|
|
|
|
/** Remove a wait before settling it: synchronous deletion makes the first claimant win. */
|
|
function claimQuestion(pending: PendingQuestion, outcome: 'answered' | 'cancelled'): void {
|
|
pendingQuestions.delete(pending.rpcId)
|
|
if (pending.signal !== undefined && pending.onAbort !== undefined) {
|
|
pending.signal.removeEventListener('abort', pending.onAbort)
|
|
}
|
|
broadcast({
|
|
type: 'question/resolved', sessionId: pending.sessionId,
|
|
questionRpcId: pending.rpcId, outcome,
|
|
})
|
|
}
|
|
|
|
const disposeProvider = ctx.userInteraction.registerProvider({
|
|
ask(request: AskUserQuestionRequest): Promise<AskUserQuestionAnswer> {
|
|
const sessionId = request.agent?.id
|
|
if (sessionId === undefined) {
|
|
return Promise.reject(new UserInteractionError(
|
|
'web user interaction requires an agent-owned session', 'ASK_MISSING_AGENT'))
|
|
}
|
|
return new Promise<AskUserQuestionAnswer>((resolve, reject) => {
|
|
const rpcId = RpcId(randomUUID())
|
|
const pending: PendingQuestion = {
|
|
rpcId, sessionId, questions: request.questions, resolve, reject,
|
|
...(request.signal === undefined ? {} : { signal: request.signal }),
|
|
}
|
|
const onAbort = (): void => {
|
|
claimQuestion(pending, 'cancelled')
|
|
reject(new UserInteractionError(
|
|
'ask_user_question was aborted before the user answered', 'ASK_ABORTED'))
|
|
}
|
|
pending.onAbort = onAbort
|
|
pendingQuestions.set(rpcId, pending)
|
|
request.signal?.addEventListener('abort', onAbort, { once: true })
|
|
const envelope: RpcRequest<MuxFrame> = {
|
|
rpcId,
|
|
payload: { type: 'question/requested', sessionId, questions: request.questions },
|
|
}
|
|
for (const queue of muxQueues) queue.push(envelope)
|
|
})
|
|
},
|
|
})
|
|
ctx.effect(() => () => {
|
|
disposeProvider()
|
|
for (const pending of [...pendingQuestions.values()]) {
|
|
claimQuestion(pending, 'cancelled')
|
|
pending.reject(new UserInteractionError(
|
|
'web user-interaction provider was disposed', 'ASK_ABORTED'))
|
|
}
|
|
}, 'api-proxy: user-interaction provider')
|
|
|
|
// --- Approval pending registry ------------------------------------------
|
|
// The proxy is the approval channel for every agent this host owns: an ask
|
|
// through `ctx.approval` becomes an answerable server-request on the mux
|
|
// stream (stable rpcId), settled by POST /api/respond. The entry survives
|
|
// client disconnects — mux-open replays still-pending requested frames with
|
|
// the same rpcId (the refresh-recovery baseline) — and withdraws on the
|
|
// ask's own abort signal (turn cancel), pushing `cancelled` to subscribers.
|
|
if (ctx.get('approval') !== undefined) {
|
|
// Teardown parity with the question provider above: a gateway disposed
|
|
// while approvals are pending settles every entry as 'cancelled' (the
|
|
// service's fail-closed vocabulary), so no ask promise dangles past the
|
|
// proxy's lifetime and subscribers see the withdrawal.
|
|
ctx.effect(() => () => {
|
|
for (const pending of [...pendingApprovals.values()]) pending.resolve('cancelled')
|
|
}, 'api-proxy: approval registry teardown')
|
|
ctx.on('approval/request', (req, next) => {
|
|
// Dispatch rides a microtask behind the service's own signal check: an
|
|
// abort landing in that window would register the abort listener AFTER
|
|
// the signal fired — never invoked, entry pending forever, zombie frame
|
|
// on every mux replay. Settle synchronously instead of publishing.
|
|
if (req.signal?.aborted === true) return Promise.resolve<ApprovalOutcome>('cancelled')
|
|
// The audit pair `approval/asked` is already appended by the service
|
|
// before dispatch, but dispatch rides a microtask: parallel tool calls
|
|
// can append several asked events before any answerer runs. THIS
|
|
// request's event is therefore the newest asked event that is still
|
|
// undecided, unclaimed by another pending entry, and — when the ask
|
|
// names a call — carries the same callId.
|
|
const events = req.agent.session.events
|
|
const claimed = new Set<ApprovalRequestId>()
|
|
for (const entry of pendingApprovals.values()) claimed.add(entry.approvalId)
|
|
const decided = new Set<ApprovalRequestId>()
|
|
let approvalId: ApprovalRequestId | undefined
|
|
for (let i = events.length - 1; i >= 0; i -= 1) {
|
|
const event = events[i] as SessionEvent
|
|
if (event.type === 'approval/decided') {
|
|
decided.add(event.data.id)
|
|
} else if (event.type === 'approval/asked') {
|
|
if (decided.has(event.data.id) || claimed.has(event.data.id)) continue
|
|
// Symmetric pairing: a callId-bearing ask only takes its own call's
|
|
// record, and a callId-less ask only takes a callId-less record —
|
|
// so neither shape can steal the other's audit id under parallel
|
|
// asks. (Today every producer — the tool executor — passes callId;
|
|
// the callId-less arm guards any future non-tool asker.)
|
|
if ((req.callId ?? null) !== (event.data.callId ?? null)) continue
|
|
approvalId = event.data.id
|
|
break
|
|
}
|
|
}
|
|
// No asked event means the request bypassed the service's audit path —
|
|
// not this channel's question; delegate to the fail-closed default.
|
|
if (approvalId === undefined) return next()
|
|
const id = approvalId
|
|
return new Promise<ApprovalOutcome>((resolve) => {
|
|
const settle = (outcome: ApprovalOutcome): void => {
|
|
/* v8 ignore next 3 -- defensive double-settle guard: respond() routes
|
|
through the pending table (a settled id is not-pending before it can
|
|
re-settle) and the first settle removes the abort listener, so no
|
|
reachable path settles twice; kept against future settle callers. */
|
|
if (!pendingApprovals.delete(pending.rpcId)) return
|
|
req.signal?.removeEventListener('abort', onAbort)
|
|
broadcast({ type: 'approval/resolved', sessionId: pending.sessionId, approvalId: id, outcome })
|
|
// A cancelled ask was already settled by the service's own signal
|
|
// race, which discards this late resolution; resolving is a no-op
|
|
// there and keeps this promise from dangling forever.
|
|
resolve(outcome)
|
|
}
|
|
const onAbort = (): void => { settle('cancelled') }
|
|
const pending: PendingApproval = {
|
|
rpcId: RpcId(randomUUID()),
|
|
sessionId: req.agent.session.id,
|
|
approvalId: id,
|
|
toolName: req.toolName,
|
|
...req.callId === undefined ? {} : { callId: req.callId },
|
|
...req.reason === undefined ? {} : { reason: req.reason },
|
|
resolve: settle,
|
|
}
|
|
pendingApprovals.set(pending.rpcId, pending)
|
|
req.signal?.addEventListener('abort', onAbort, { once: true })
|
|
const envelope = requestedFrame(pending)
|
|
for (const queue of muxQueues) queue.push(envelope)
|
|
})
|
|
})
|
|
}
|
|
|
|
/** Whether the session's own suffix carries the durable subagent discriminator. */
|
|
function hasSubagentDescriptor(session: Pick<Session, 'events' | 'header'>): boolean {
|
|
const events = session.events
|
|
// Indexed scan from the own-suffix start: slicing copies the whole suffix
|
|
// on every Agent-bound RPC, including each `session.prompt` on long
|
|
// transcripts.
|
|
for (let index = session.header.seedLength ?? 0; index < events.length; index += 1) {
|
|
if (events[index]?.type === 'subagent/descriptor') return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
/**
|
|
* Generic Host interaction cannot claim a durably classified subagent or an
|
|
* Agent created through its live parent. The runtime-owner arm also covers
|
|
* descriptor-less child publication windows and older stored headers.
|
|
*/
|
|
function hasSubagentOwner(
|
|
session: Pick<Session, 'events' | 'header'>,
|
|
agent: Agent | undefined,
|
|
): boolean {
|
|
if (session.header.origin === 'subagent' || hasSubagentDescriptor(session)) return true
|
|
const parentId = session.header.parentSession
|
|
if (parentId === undefined || agent === undefined) return false
|
|
const parent = ctx.agents.get(parentId)
|
|
return parent !== undefined && ctx.agents.isOwnedBy(agent.id, parent)
|
|
}
|
|
|
|
/** Stable generic-Host error for an identity reserved to subagent routing. */
|
|
function subagentOwnershipError(sessionId: SessionId): RpcError {
|
|
return {
|
|
code: 'agent-busy',
|
|
message: `session "${sessionId}" is owned by subagent routing`,
|
|
details: { reason: 'use subagent delivery for this child session' },
|
|
}
|
|
}
|
|
|
|
/** Inspect one cold served session without repairing, resuming, or publishing it. */
|
|
async function inspectServable(sessionId: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
|
|
const persistence = ctx.get('sessionPersistence')
|
|
if (persistence === undefined) {
|
|
throw new Error('session persistence is not configured (load a dsh-session-persistence backend)')
|
|
}
|
|
const meta = (await persistence.list()).find(m => m.id === sessionId)
|
|
if (meta === undefined || meta.cwd === undefined) throw new SessionNotFound(`session "${sessionId}" not found`)
|
|
const inspected = await persistence.inspect(sessionId)
|
|
if (inspected.meta.cwd === undefined) throw new SessionNotFound(`session "${sessionId}" not found`)
|
|
return inspected
|
|
}
|
|
|
|
/**
|
|
* Resolve one live registered identity through the subagent-ownership
|
|
* fence: subagent-owned agents answer `agent-busy`, plain agents pass.
|
|
* Fences the live agent's own session rather than trusting a
|
|
* "registered ⇒ attached-store" invariant — a registered subagent whose
|
|
* session is ever absent from the attached store must still not be handed
|
|
* out through generic Host routing. `undefined` means no live agent.
|
|
*/
|
|
function fencedLiveAgent(sessionId: SessionId): { agent: Agent } | { error: RpcError } | undefined {
|
|
const live = ctx.agents.get(sessionId)
|
|
if (live === undefined) return undefined
|
|
if (hasSubagentOwner(live.session, live)) return { error: subagentOwnershipError(sessionId) }
|
|
return { agent: live }
|
|
}
|
|
|
|
async function agentFor(sessionId: SessionId): Promise<{ agent: Agent } | { error: RpcError }> {
|
|
const fenced = fencedLiveAgent(sessionId)
|
|
if (fenced !== undefined) return fenced
|
|
const attached = ctx.sessions.get(sessionId)
|
|
if (attached !== undefined && hasSubagentOwner(attached, undefined)) {
|
|
return { error: subagentOwnershipError(sessionId) }
|
|
}
|
|
let resume = resumes.get(sessionId)
|
|
if (resume === undefined) {
|
|
resume = (async () => {
|
|
try {
|
|
const inspected = await inspectServable(sessionId)
|
|
if (hasSubagentOwner({ header: inspected.meta, events: inspected.events }, undefined)) {
|
|
throw new SubagentSessionOwnership(sessionId)
|
|
}
|
|
const publishedSession = ctx.sessions.get(sessionId)
|
|
const publishedAgent = ctx.agents.get(sessionId)
|
|
if (publishedSession !== undefined && hasSubagentOwner(publishedSession, publishedAgent)) {
|
|
throw new SubagentSessionOwnership(sessionId)
|
|
}
|
|
const handle = await ctx.agents.resume({
|
|
resumeSessionId: sessionId,
|
|
agentOptions,
|
|
setup: installTarget,
|
|
})
|
|
return handle.agent
|
|
} finally {
|
|
resumes.delete(sessionId)
|
|
}
|
|
})()
|
|
resumes.set(sessionId, resume)
|
|
}
|
|
try {
|
|
return { agent: await resume }
|
|
} catch (error: unknown) {
|
|
if (error instanceof SessionNotFound) {
|
|
return { error: { code: 'session-not-found', message: error.message, details: { sessionId } } }
|
|
}
|
|
if (error instanceof SubagentSessionOwnership) {
|
|
return { error: subagentOwnershipError(error.sessionId) }
|
|
}
|
|
// A concurrent publish can win the identity between the pre-resume
|
|
// re-check and `ctx.agents.resume` publication; the ID-collision
|
|
// rejection falls through here. Mirror ensureSession's `.catch` in
|
|
// full: classify a subagent-owned winner into the stable ownership
|
|
// error, and hand a clean plain-agent winner straight back.
|
|
const fenced = fencedLiveAgent(sessionId)
|
|
if (fenced !== undefined) return fenced
|
|
const attached = ctx.sessions.get(sessionId)
|
|
if (attached !== undefined && hasSubagentOwner(attached, undefined)) {
|
|
return { error: subagentOwnershipError(sessionId) }
|
|
}
|
|
// The internal details slot is contractually {}; the reason rides the message.
|
|
return { error: { code: 'internal', message: `resume failed for session "${sessionId}": ${String(error)}`, details: {} } }
|
|
}
|
|
}
|
|
|
|
type SessionReadState = {
|
|
id: SessionId
|
|
header: SessionHeader
|
|
events: SessionEvent[]
|
|
}
|
|
|
|
/** Read one stable session prefix without acquiring an Agent owner. */
|
|
async function readSessionState(sessionId: SessionId): Promise<SessionReadState> {
|
|
const attached = ctx.sessions.get(sessionId)
|
|
if (attached !== undefined) {
|
|
return {
|
|
id: attached.id,
|
|
header: attached.header,
|
|
events: [...attached.events],
|
|
}
|
|
}
|
|
const inspected = await inspectServable(sessionId)
|
|
return { id: inspected.meta.id, header: inspected.meta, events: inspected.events }
|
|
}
|
|
|
|
/** Resolve the Workspace inherited by a fork without making ordinary loose lineage grouped. */
|
|
async function forkWorkspace(source: Pick<Session, 'id' | 'header'>): Promise<Workspace | undefined> {
|
|
const workspaces = ctx.workspace.list()
|
|
const direct = workspaces.find(workspace => workspace.sessionIds.includes(source.id))
|
|
if (direct !== undefined || source.header.origin !== 'subagent') return direct
|
|
|
|
const lineage = await ctx.sessionQuery.traceSession(source.id)
|
|
for (const ancestor of lineage.ancestors) {
|
|
const workspace = workspaces.find(candidate => candidate.sessionIds.includes(ancestor.header.id))
|
|
if (workspace !== undefined) return workspace
|
|
}
|
|
return undefined
|
|
}
|
|
|
|
/** Read one transcript cut and optional projection baseline without acquiring an Agent owner. */
|
|
async function historyStateFor(
|
|
sessionId: SessionId,
|
|
includeProjections: boolean,
|
|
): Promise<{ events: SessionEvent[]; projections?: SessionProjectionsBlock }> {
|
|
const attached = ctx.sessions.get(sessionId)
|
|
if (attached !== undefined) {
|
|
const events = [...attached.events]
|
|
const projections = includeProjections ? projectionsFor(ctx, attached) : undefined
|
|
return { events, ...projections === undefined ? {} : { projections } }
|
|
}
|
|
const inspected = await inspectServable(sessionId)
|
|
const projections = includeProjections ? detachedProjectionsFor(ctx, inspected.events) : undefined
|
|
return {
|
|
events: inspected.events,
|
|
...projections === undefined ? {} : { projections },
|
|
}
|
|
}
|
|
|
|
/** Resolve one requested identity to a live agent, creating or resuming it once. */
|
|
async function ensureSession(sessionId: SessionId, cwd: string, checkPersistedIdentity: boolean): Promise<Agent> {
|
|
let creation = sessionCreations.get(sessionId)
|
|
if (creation === undefined) {
|
|
creation = (async () => {
|
|
const attached = ctx.sessions.get(sessionId)
|
|
const live = ctx.agents.get(sessionId)
|
|
if (attached !== undefined && hasSubagentOwner(attached, live)) {
|
|
throw new SubagentSessionOwnership(sessionId)
|
|
}
|
|
if (live !== undefined) return live
|
|
|
|
const persistence = checkPersistedIdentity ? ctx.get('sessionPersistence') : undefined
|
|
const stored = persistence === undefined
|
|
? undefined
|
|
: (await persistence.list()).find(header => header.id === sessionId)
|
|
if (persistence !== undefined && stored !== undefined) {
|
|
const inspected = await persistence.inspect(sessionId)
|
|
// Ownership first: explicit-id adoption of a session-backed
|
|
// subagent must answer `agent-busy` regardless of the requested
|
|
// cwd (the api/commands.ts contract), not a cwd conflict.
|
|
if (hasSubagentOwner({ header: inspected.meta, events: inspected.events }, undefined)) {
|
|
throw new SubagentSessionOwnership(sessionId)
|
|
}
|
|
if (inspected.meta.cwd !== cwd) {
|
|
throw new SessionCwdConflict(sessionId, cwd, inspected.meta.cwd)
|
|
}
|
|
return (await ctx.agents.resume({
|
|
resumeSessionId: sessionId,
|
|
agentOptions,
|
|
setup: installTarget,
|
|
})).agent
|
|
}
|
|
|
|
try {
|
|
await mkdir(cwd, { recursive: true })
|
|
} catch (error: unknown) {
|
|
throw new Error(`failed to ensure project directory "${cwd}": ${String(error)}`, { cause: error })
|
|
}
|
|
return (await ctx.agents.create({
|
|
sessionId,
|
|
agentOptions,
|
|
meta: { cwd },
|
|
setup: installTarget,
|
|
})).agent
|
|
})().catch((error: unknown) => {
|
|
// Another Host entry path may have published the same identity while
|
|
// this operation crossed an asynchronous persistence/filesystem step.
|
|
const live = ctx.agents.get(sessionId)
|
|
if (live !== undefined) {
|
|
if (hasSubagentOwner(live.session, live)) throw new SubagentSessionOwnership(sessionId)
|
|
return live
|
|
}
|
|
const attached = ctx.sessions.get(sessionId)
|
|
if (attached !== undefined && hasSubagentOwner(attached, undefined)) {
|
|
throw new SubagentSessionOwnership(sessionId)
|
|
}
|
|
throw error
|
|
}).finally(() => {
|
|
sessionCreations.delete(sessionId)
|
|
})
|
|
sessionCreations.set(sessionId, creation)
|
|
}
|
|
const agent = await creation
|
|
if (hasSubagentOwner(agent.session, agent)) throw new SubagentSessionOwnership(sessionId)
|
|
if (agent.session.header.cwd !== cwd) {
|
|
throw new SessionCwdConflict(sessionId, cwd, agent.session.header.cwd)
|
|
}
|
|
return agent
|
|
}
|
|
|
|
/** Resolve or create one path while holding the Host's workspace-create chain. */
|
|
function ensureWorkspace(
|
|
path: string,
|
|
title: string | undefined,
|
|
rejectExistingName = false,
|
|
createDirectory = false,
|
|
): Promise<{ workspace: Workspace; created: boolean }> {
|
|
const operation = workspaceCreationChain.then(async () => {
|
|
if (rejectExistingName && title !== undefined
|
|
&& ctx.workspace.list().some(workspace => workspace.title === title)) {
|
|
throw new WorkspaceNameConflictError(title)
|
|
}
|
|
if (createDirectory) {
|
|
try {
|
|
await mkdir(path, { recursive: true })
|
|
} catch (error: unknown) {
|
|
throw new WorkspaceDirectoryCreationError(
|
|
`failed to create workspace directory "${path}": ${String(error)}`,
|
|
)
|
|
}
|
|
}
|
|
const existing = await ctx.workspace.resolveByPath(path)
|
|
if (existing !== undefined) return { workspace: existing, created: false }
|
|
return { workspace: await ctx.workspace.create(path, title), created: true }
|
|
})
|
|
workspaceCreationChain = operation.then(() => undefined, () => undefined)
|
|
return operation
|
|
}
|
|
|
|
/**
|
|
* Build the session.list baseline shared by listing and search visibility.
|
|
* Attached sessions come from memory; servable cold sessions merge from
|
|
* persistence, and the final order is newest-first.
|
|
*/
|
|
async function listVisibleSessionSummaries(signal?: AbortSignal): Promise<SessionSummary[]> {
|
|
signal?.throwIfAborted()
|
|
const items = ctx.sessions.list().map((session) => {
|
|
const agent = ctx.agents.get(session.id)
|
|
const projections = listProjectionsFor(ctx, session.header, session)
|
|
return {
|
|
...summarize(session, agent?.status === 'running'),
|
|
...projections === undefined ? {} : { projections },
|
|
}
|
|
})
|
|
signal?.throwIfAborted()
|
|
const attached = new Set(items.map(item => item.sessionId))
|
|
const persistence = ctx.get('sessionPersistence')
|
|
if (persistence !== undefined) {
|
|
const cold = (await persistence.list(signal))
|
|
.filter(meta => !attached.has(meta.id) && meta.cwd !== undefined)
|
|
signal?.throwIfAborted()
|
|
for (let offset = 0; offset < cold.length; offset += COLD_SUMMARY_BATCH_SIZE) {
|
|
signal?.throwIfAborted()
|
|
const batch = cold.slice(offset, offset + COLD_SUMMARY_BATCH_SIZE)
|
|
const settled = await Promise.allSettled(
|
|
batch.map(async (meta) => {
|
|
// Cold rows read the persisted projection cache only — never a
|
|
// log load; a session without a cache row simply has no column.
|
|
const projections = listProjectionsFor(ctx, meta, undefined)
|
|
return {
|
|
...await summarizeCold(persistence, meta, signal),
|
|
...projections === undefined ? {} : { projections },
|
|
}
|
|
}),
|
|
)
|
|
const summaries: SessionSummary[] = []
|
|
let rejected = false
|
|
let failure: unknown
|
|
for (const result of settled) {
|
|
if (result.status === 'fulfilled') {
|
|
summaries.push(result.value)
|
|
} else if (!rejected) {
|
|
rejected = true
|
|
failure = result.reason
|
|
}
|
|
}
|
|
if (rejected) throw failure
|
|
signal?.throwIfAborted()
|
|
items.push(...summaries)
|
|
}
|
|
}
|
|
items.sort((a, b) => b.updatedAt - a.updatedAt)
|
|
return items
|
|
}
|
|
|
|
/** Resolve the goal service; absent = the deployment did not compose @deepseek-ai/dsh-goal. */
|
|
function goalService(): NonNullable<ReturnType<typeof ctx.get<'goals'>>> | { error: RpcError } {
|
|
const goals = ctx.get('goals')
|
|
if (goals === undefined) {
|
|
return { error: { code: 'internal', message: 'goal service is absent: this deployment does not mount @deepseek-ai/dsh-goal in its composition (cordis.yml or explicit assembly)', details: {} } }
|
|
}
|
|
return goals
|
|
}
|
|
|
|
/** Map one goal-domain rejection to the wire error (stable GoalError codes ride in details). */
|
|
function goalError(request: RpcRequest<unknown>, error: unknown): RpcResponse<never> {
|
|
const details = error instanceof GoalError ? { goalCode: error.code } : {}
|
|
return err(request, { code: 'internal', message: String(error), details })
|
|
}
|
|
|
|
/** Resolve a session's agent, apply one goal mutation, and acknowledge with the new CAS ref. */
|
|
async function mutateGoal(
|
|
request: RpcRequest<{ sessionId: SessionId }>,
|
|
mutation: (goals: NonNullable<ReturnType<typeof ctx.get<'goals'>>>, agent: Agent) => CoreGoalRef,
|
|
): Promise<RpcResponse<{ ref: GoalRef }>> {
|
|
const goals = goalService()
|
|
if ('error' in goals) return err(request, goals.error)
|
|
const found = await agentFor(request.payload.sessionId)
|
|
if ('error' in found) return err(request, found.error)
|
|
try {
|
|
const ref = mutation(goals, found.agent)
|
|
return ok(request, { ref: { id: ref.id, revision: ref.revision } })
|
|
} catch (error: unknown) {
|
|
return goalError(request, error)
|
|
}
|
|
}
|
|
|
|
/** Missing-service report shared by the settings domain (skills-domain stance). */
|
|
function settingsAbsent(): RpcError {
|
|
return { code: 'internal', message: 'settings service is absent: this deployment does not mount a settings provider (e.g. @deepseek-ai/dsh-settings-local) in its composition', details: {} }
|
|
}
|
|
|
|
/** Missing-service report shared by the credentials domain. */
|
|
function credentialsAbsent(): RpcError {
|
|
return { code: 'internal', message: 'credentials service is absent: this deployment does not mount a credential provider (e.g. @deepseek-ai/dsh-credentials-local) in its composition', details: {} }
|
|
}
|
|
|
|
/** Map one redacted seam descriptor to its wire view. */
|
|
function namespaceView(descriptor: SettingsDescriptor): SettingsNamespaceView {
|
|
return {
|
|
ns: String(descriptor.ns),
|
|
schema: descriptor.schema,
|
|
value: descriptor.value,
|
|
...descriptor.base === undefined ? {} : { base: descriptor.base },
|
|
...descriptor.user === undefined ? {} : { user: descriptor.user },
|
|
applies: descriptor.applies,
|
|
secrets: (descriptor.secrets ?? []).map(secret => ({ path: [...secret.path], set: secret.set })),
|
|
revision: descriptor.revision,
|
|
}
|
|
}
|
|
|
|
/** Settings namespaces whose changes can invalidate the model catalog. */
|
|
function modelProviderNamespaces(): Set<string> {
|
|
return new Set(ctx.llm.listConfigurableProviders().map(entry => entry.settingsNs))
|
|
}
|
|
|
|
/**
|
|
* The settings namespaces this proxy serves: configurable model providers
|
|
* plus the small explicit Web preference and product-owned allowlists. The
|
|
* settings seam remains general; a future registration does not become
|
|
* remotely readable or writable by default.
|
|
*/
|
|
function exposedNamespaces(): Set<string> {
|
|
const exposed = modelProviderNamespaces()
|
|
for (const ns of WEB_SETTINGS_NAMESPACES) exposed.add(ns)
|
|
for (const ns of PRODUCT_SETTINGS_NAMESPACES) exposed.add(ns)
|
|
return exposed
|
|
}
|
|
|
|
/** Refuse a namespace outside the explicit configuration-client boundary. */
|
|
function notExposed(request: RpcRequest<unknown>, ns: string): RpcResponse<SettingsNamespaceView> {
|
|
return err(request, {
|
|
code: 'settings-not-exposed',
|
|
message: `settings namespace "${ns}" is not exposed to configuration clients`,
|
|
details: { ns },
|
|
})
|
|
}
|
|
|
|
/**
|
|
* Run one settings write (merge or wholesale replace) and acknowledge with
|
|
* the namespace's new redacted view. A namespace outside the configuration
|
|
* boundary is refused before the seam is touched; every seam refusal —
|
|
* unknown or invalid namespace, read-only provider, schema validation,
|
|
* storage — becomes one `settings-rejected` carrying the seam's own message.
|
|
*/
|
|
async function settingsWrite(
|
|
request: RpcRequest<unknown>,
|
|
ns: string,
|
|
mode: 'update' | 'replace' | 'mutate',
|
|
section: object,
|
|
expectedRevision?: number,
|
|
): Promise<RpcResponse<SettingsNamespaceView>> {
|
|
const settings = ctx.get('settings')
|
|
if (settings === undefined) return err(request, settingsAbsent())
|
|
const rejected = (error: unknown): RpcResponse<SettingsNamespaceView> => {
|
|
// A stale writer is its own outcome, not a malformed request: the client
|
|
// must re-read and re-apply rather than treat the write as invalid.
|
|
if (error instanceof SettingsConflictError) {
|
|
return err(request, {
|
|
code: 'settings-conflict',
|
|
message: error.message,
|
|
details: { ns, expected: error.expected, actual: error.actual },
|
|
})
|
|
}
|
|
return err(request, {
|
|
code: 'settings-rejected',
|
|
message: error instanceof Error ? error.message : String(error),
|
|
details: { ns },
|
|
})
|
|
}
|
|
let branded: SettingsNamespace
|
|
try {
|
|
branded = settingsNamespace(ns)
|
|
} catch (error: unknown) {
|
|
// A malformed name is a client bug, reported as such; it could never be
|
|
// in the exposed set either, so naming the real fault costs no ground.
|
|
return rejected(error)
|
|
}
|
|
if (!exposedNamespaces().has(ns)) return notExposed(request, ns)
|
|
try {
|
|
if (mode === 'update') await settings.update(branded, section, expectedRevision)
|
|
else if (mode === 'replace') await settings.replace(branded, section, expectedRevision)
|
|
else await settings.mutate(branded, section as SettingsPathOp[], expectedRevision)
|
|
} catch (error: unknown) {
|
|
return rejected(error)
|
|
}
|
|
const descriptor = settings.describe({ redactSecrets: true }).find(candidate => candidate.ns === branded)
|
|
if (descriptor === undefined) {
|
|
// The write committed but the namespace vanished before this read: only
|
|
// a concurrent registrant disposal can produce it.
|
|
return err(request, { code: 'internal', message: `settings namespace "${ns}" was disposed after the ${mode}`, details: {} })
|
|
}
|
|
return ok(request, namespaceView(descriptor))
|
|
}
|
|
|
|
return {
|
|
sessions: {
|
|
// Attached sessions summarize from memory; persisted-but-unattached (cold)
|
|
// sessions merge in from the persistence store so history survives restarts.
|
|
// Legacy logs without a cwd (pre-project stance) are not served — every
|
|
// session now records its project at create time.
|
|
async list(request) {
|
|
return ok(request, { items: await listVisibleSessionSummaries() })
|
|
},
|
|
|
|
async search(request, signal) {
|
|
const cancelled = () => err<{ items: SessionSearchItem[]; hasMore: boolean }>(request, {
|
|
code: 'cancelled',
|
|
message: 'session search was aborted',
|
|
details: {},
|
|
})
|
|
if (isAborted(signal)) return cancelled()
|
|
const sessionQuery = ctx.get('sessionQuery')
|
|
if (sessionQuery === undefined) {
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: 'session search is unavailable: this deployment does not mount @deepseek-ai/dsh-session-query',
|
|
details: {},
|
|
})
|
|
}
|
|
try {
|
|
const visible = await listVisibleSessionSummaries(signal)
|
|
if (isAborted(signal)) return cancelled()
|
|
if (visible.length === 0) return ok(request, { items: [], hasMore: false })
|
|
const visibleIds = new Set(visible.map(item => item.sessionId))
|
|
const authorized: SessionSearchItem[] = []
|
|
const acceptedIds = new Set<SessionId>()
|
|
const seenCursors = new Set<SessionSearchCursor>()
|
|
let cursor: SessionSearchCursor | undefined
|
|
let providerCallCount = 0
|
|
let providerPageLimit = SESSION_SEARCH_RESULT_LIMIT
|
|
while (authorized.length <= SESSION_SEARCH_RESULT_LIMIT) {
|
|
if (isAborted(signal)) return cancelled()
|
|
if (providerCallCount >= SESSION_SEARCH_PROVIDER_CALL_LIMIT) {
|
|
throw new Error(
|
|
`session search provider exceeded the ${SESSION_SEARCH_PROVIDER_CALL_LIMIT}-call work budget`,
|
|
)
|
|
}
|
|
providerCallCount++
|
|
const requestedCursor = cursor
|
|
const requestedPageLimit = providerPageLimit
|
|
let page
|
|
try {
|
|
page = await sessionQuery.searchSessions({
|
|
query: request.payload.query,
|
|
eventFilters: [
|
|
{ kind: 'type', values: ['user/message', 'assistant/message', 'steering/message'] },
|
|
{ kind: 'surface', values: ['current'] },
|
|
],
|
|
limit: requestedPageLimit,
|
|
...requestedCursor === undefined ? {} : { cursor: requestedCursor },
|
|
}, { signal })
|
|
} catch (error: unknown) {
|
|
if (isAborted(signal)) return cancelled()
|
|
if (
|
|
requestedCursor === undefined
|
|
&& error instanceof SessionQueryError
|
|
&& error.code === 'SESSION_QUERY_INVALID_LIMIT'
|
|
&& requestedPageLimit > 1
|
|
) {
|
|
providerPageLimit = Math.max(1, Math.floor(requestedPageLimit / 2))
|
|
continue
|
|
}
|
|
if (
|
|
requestedCursor !== undefined
|
|
&& error instanceof SessionQueryError
|
|
&& error.code === 'SESSION_QUERY_STALE_CURSOR'
|
|
) {
|
|
authorized.length = 0
|
|
acceptedIds.clear()
|
|
seenCursors.clear()
|
|
cursor = undefined
|
|
continue
|
|
}
|
|
throw error
|
|
}
|
|
if (isAborted(signal)) return cancelled()
|
|
const providerItemCount = page.items.length
|
|
if (providerItemCount > requestedPageLimit) {
|
|
throw new Error(
|
|
`session search provider returned ${providerItemCount} items; maximum is ${requestedPageLimit}`,
|
|
)
|
|
}
|
|
// Host visibility is the authorization boundary. Consume the
|
|
// provider's globally ranked stream rather than binding every
|
|
// visible id into one SQLite statement, then re-check complete
|
|
// provenance before emitting any snippet.
|
|
for (const hit of page.items) {
|
|
if (authorized.length > SESSION_SEARCH_RESULT_LIMIT) continue
|
|
if (
|
|
!visibleIds.has(hit.header.id)
|
|
|| hit.bestMatch.sessionId !== hit.header.id
|
|
|| hit.bestMatch.surface !== 'current'
|
|
|| !MESSAGE_TYPES.has(hit.bestMatch.type)
|
|
|| acceptedIds.has(hit.header.id)
|
|
) continue
|
|
const snippet = truncateUnicodeCodePoints(
|
|
hit.bestMatch.snippet,
|
|
SESSION_SEARCH_SNIPPET_MAX_CODE_POINTS,
|
|
)
|
|
acceptedIds.add(hit.header.id)
|
|
authorized.push({
|
|
sessionId: hit.header.id,
|
|
snippet,
|
|
})
|
|
}
|
|
const nextCursor = page.nextCursor
|
|
if (nextCursor !== undefined) {
|
|
if (seenCursors.has(nextCursor)) {
|
|
throw new Error('session search provider repeated a continuation cursor')
|
|
}
|
|
seenCursors.add(nextCursor)
|
|
}
|
|
if (authorized.length > SESSION_SEARCH_RESULT_LIMIT || nextCursor === undefined) break
|
|
cursor = nextCursor
|
|
}
|
|
return ok(request, {
|
|
items: authorized.slice(0, SESSION_SEARCH_RESULT_LIMIT),
|
|
hasMore: authorized.length > SESSION_SEARCH_RESULT_LIMIT,
|
|
})
|
|
} catch (error: unknown) {
|
|
if (
|
|
isAborted(signal)
|
|
|| (error instanceof SessionQueryError && error.code === 'SESSION_QUERY_ABORTED')
|
|
) return cancelled()
|
|
// XXX: Redact provider details before exposing this gateway beyond
|
|
// its current single-user local deployment.
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: `session search failed: ${String(error)}`,
|
|
details: {},
|
|
})
|
|
}
|
|
},
|
|
|
|
async create(request) {
|
|
const sessionId = request.payload.sessionId ?? `session-${randomUUID()}` as SessionId
|
|
let workspace: Workspace | undefined
|
|
if (request.payload.workspaceId !== undefined) {
|
|
workspace = ctx.workspace.get(brandWorkspaceId(request.payload.workspaceId))
|
|
if (workspace === undefined) {
|
|
return err(request, {
|
|
code: 'workspace-not-found',
|
|
message: `workspace "${request.payload.workspaceId}" not found`,
|
|
details: { workspaceId: request.payload.workspaceId },
|
|
})
|
|
}
|
|
}
|
|
const cwd = workspace?.path ?? request.payload.cwd ?? defaults.cwd
|
|
try {
|
|
await ensureSession(sessionId, cwd, request.payload.sessionId !== undefined)
|
|
} catch (error: unknown) {
|
|
if (error instanceof SessionCwdConflict) {
|
|
return err(request, {
|
|
code: 'session-conflict',
|
|
message: error.message,
|
|
details: {
|
|
sessionId: error.sessionId,
|
|
requestedCwd: error.requestedCwd,
|
|
...error.existingCwd === undefined ? {} : { existingCwd: error.existingCwd },
|
|
},
|
|
})
|
|
}
|
|
if (error instanceof SubagentSessionOwnership) {
|
|
return err(request, subagentOwnershipError(error.sessionId))
|
|
}
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: `failed to create session "${sessionId}": ${String(error)}`,
|
|
details: {},
|
|
})
|
|
}
|
|
if (workspace !== undefined) {
|
|
try {
|
|
await workspace.attachSession(sessionId)
|
|
} catch (error: unknown) {
|
|
return err(request, {
|
|
code: 'workspace-attach-failed',
|
|
message: `session "${sessionId}" was created but could not attach to workspace "${workspace.id}": ${String(error)}`,
|
|
details: { sessionId, workspaceId: workspace.id },
|
|
})
|
|
}
|
|
}
|
|
return ok(request, { sessionId })
|
|
},
|
|
|
|
async history(request) {
|
|
const { sessionId, beforeSeq, maxMessages } = request.payload
|
|
let state: { events: SessionEvent[]; projections?: SessionProjectionsBlock }
|
|
try {
|
|
state = await historyStateFor(sessionId, beforeSeq === undefined)
|
|
} catch (error: unknown) {
|
|
if (error instanceof SessionNotFound) {
|
|
return err(request, { code: 'session-not-found', message: error.message, details: { sessionId } })
|
|
}
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: `history unavailable for session "${sessionId}": ${String(error)}`,
|
|
details: {},
|
|
})
|
|
}
|
|
const page = historyPage(ctx, state.events, beforeSeq, maxMessages)
|
|
return ok(request, {
|
|
events: page.events,
|
|
hasMore: page.hasMore,
|
|
...state.projections === undefined ? {} : { projections: state.projections },
|
|
})
|
|
},
|
|
|
|
async models(request) {
|
|
const { sessionId } = request.payload
|
|
const found = await agentFor(sessionId)
|
|
if ('error' in found) return err(request, found.error)
|
|
const current = targetFor(found.agent).current
|
|
const { groups, failures } = await buildModelCatalog(ctx, current)
|
|
return ok(request, { current: { ...current }, groups, failures })
|
|
},
|
|
|
|
async selectModel(request) {
|
|
const { sessionId, provider, model, reasoningEffort } = request.payload
|
|
const found = await agentFor(sessionId)
|
|
if ('error' in found) return err(request, found.error)
|
|
try {
|
|
const resolved = await ctx.llm.resolveCallConfig({
|
|
provider,
|
|
model,
|
|
...reasoningEffort === undefined
|
|
? {}
|
|
: { reasoningEffort: ReasoningEffortId(reasoningEffort) },
|
|
})
|
|
const selected: AgentLlmTarget = {
|
|
provider: resolved.provider,
|
|
model: resolved.model,
|
|
...resolved.reasoningEffort === undefined
|
|
? {}
|
|
: { reasoningEffort: resolved.reasoningEffort },
|
|
}
|
|
targetFor(found.agent).current = selected
|
|
return ok(request, { selected: { ...selected } })
|
|
} catch (error: unknown) {
|
|
return err(request, {
|
|
code: 'model-unavailable',
|
|
message: error instanceof Error ? error.message : String(error),
|
|
details: { provider, model },
|
|
})
|
|
}
|
|
},
|
|
|
|
async rename(request) {
|
|
const { sessionId, title } = request.payload
|
|
const found = await agentFor(sessionId)
|
|
if ('error' in found) return err(request, found.error)
|
|
const titles = ctx.get('sessionTitle')
|
|
if (titles === undefined) {
|
|
return err(request, { code: 'internal', message: 'renaming is unavailable: this deployment mounts no session-title service', details: {} })
|
|
}
|
|
try {
|
|
const accepted = titles.rename(found.agent.session, title)
|
|
return ok(request, { title: accepted.title, seq: accepted.eventSeq })
|
|
} catch (error: unknown) {
|
|
// Only the input's fault maps to title-invalid (the message is
|
|
// product-user-visible in the rename dialog); liveness and disposal
|
|
// races are deployment trouble, not a bad title.
|
|
if (error instanceof SessionTitleInvalidError) {
|
|
return err(request, {
|
|
code: 'title-invalid',
|
|
message: error.message,
|
|
details: { sessionId },
|
|
})
|
|
}
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: `failed to rename session "${sessionId}": ${String(error)}`,
|
|
details: {},
|
|
})
|
|
}
|
|
},
|
|
|
|
async fork(request) {
|
|
const { sessionId, atSeq } = request.payload
|
|
let source: SessionReadState
|
|
try {
|
|
source = await readSessionState(sessionId)
|
|
} catch (error: unknown) {
|
|
if (error instanceof SessionNotFound) {
|
|
return err(request, { code: 'session-not-found', message: error.message, details: { sessionId } })
|
|
}
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: `fork source unavailable for session "${sessionId}": ${String(error)}`,
|
|
details: {},
|
|
})
|
|
}
|
|
const events = source.events
|
|
// An in-log anchor belongs to the turn containing it and must never
|
|
// clip backward to an earlier completed turn. Omitted and past-end
|
|
// anchors retain the last-completed-turn shortcut.
|
|
const lastSeq = events.at(-1)?.seq ?? -1
|
|
const anchoredBoundary = atSeq === undefined
|
|
? undefined
|
|
: events.find(e => e.type === 'turn/end' && e.seq >= atSeq)
|
|
const boundary = anchoredBoundary
|
|
?? (atSeq === undefined || atSeq > lastSeq
|
|
? events.findLast(e => e.type === 'turn/end')
|
|
: undefined)
|
|
if (boundary === undefined) {
|
|
return err(request, {
|
|
code: 'fork-unavailable',
|
|
message: atSeq !== undefined && atSeq <= lastSeq
|
|
? `session "${sessionId}" has not completed the turn containing event ${String(atSeq)}`
|
|
: `session "${sessionId}" has no completed turn to fork from`,
|
|
details: { sessionId },
|
|
})
|
|
}
|
|
// Extend the cut through trailing out-of-band appends (session/title,
|
|
// injections) up to the next turn/start: they are standalone events, so
|
|
// the seed stays balanced, and the child inherits a title generated
|
|
// right after the boundary turn.
|
|
let cut = boundary.seq + 1
|
|
while (cut < events.length && events[cut]?.type !== 'turn/start') cut++
|
|
let workspace: Workspace | undefined
|
|
try {
|
|
workspace = await forkWorkspace(source)
|
|
} catch (error: unknown) {
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: `failed to resolve fork workspace for session "${sessionId}": ${String(error)}`,
|
|
details: {},
|
|
})
|
|
}
|
|
const childId = `session-${randomUUID()}` as SessionId
|
|
try {
|
|
await ctx.agents.create({
|
|
sessionId: childId,
|
|
seed: events.slice(0, cut),
|
|
meta: {
|
|
...source.header.cwd === undefined ? {} : { cwd: source.header.cwd },
|
|
parentSession: source.id,
|
|
seedLength: cut,
|
|
},
|
|
agentOptions,
|
|
setup: installTarget,
|
|
})
|
|
} catch (error: unknown) {
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: `failed to fork session "${sessionId}": ${String(error)}`,
|
|
details: {},
|
|
})
|
|
}
|
|
// An ordinary source keeps its direct Workspace. A subagent source is
|
|
// not listed there, so its ordinary fork joins the nearest owning
|
|
// ancestor instead. The child is already published if attach fails.
|
|
if (workspace !== undefined) {
|
|
try {
|
|
await workspace.attachSession(childId)
|
|
} catch (error: unknown) {
|
|
return err(request, {
|
|
code: 'workspace-attach-failed',
|
|
message: `session "${childId}" was forked but could not attach to workspace "${workspace.id}": ${String(error)}`,
|
|
details: { sessionId: childId, workspaceId: workspace.id },
|
|
})
|
|
}
|
|
}
|
|
return ok(request, { sessionId: childId })
|
|
},
|
|
|
|
async prompt(request) {
|
|
const { sessionId, mode, content } = request.payload
|
|
const found = await agentFor(sessionId)
|
|
if ('error' in found) return err(request, found.error)
|
|
const agent = found.agent
|
|
// The rpcId rides MessageSource into user/message (merge declaration in api/sessions.ts; provisional correlation).
|
|
const source: MessageSource = { kind: 'user', rpcId: request.rpcId }
|
|
try {
|
|
const message: UserMessage = createUserMessage({ content, source })
|
|
if (mode === 'steer') agent.steer(message)
|
|
else agent.followup(message)
|
|
} catch (error: unknown) {
|
|
// A synchronous throw from steer/followup means disposed or invalid input; surface as agent-busy with the reason attached.
|
|
return err(request, { code: 'agent-busy', message: 'prompt rejected', details: { reason: String(error) } })
|
|
}
|
|
return ok(request, { accepted: true as const })
|
|
},
|
|
|
|
updateQueue(request) {
|
|
const { sessionId, itemId, action } = request.payload
|
|
const agent = ctx.agents.get(sessionId)
|
|
if (agent !== undefined && hasSubagentOwner(agent.session, agent)) {
|
|
return Promise.resolve(err(request, subagentOwnershipError(sessionId)))
|
|
}
|
|
if (agent === undefined) {
|
|
return Promise.resolve(err(request, {
|
|
code: 'queue-item-not-found',
|
|
message: 'queued item is no longer pending',
|
|
details: { itemId },
|
|
}))
|
|
}
|
|
const result = agent.updateInbox(itemId, action)
|
|
if (result === 'not-found') {
|
|
return Promise.resolve(err(request, {
|
|
code: 'queue-item-not-found',
|
|
message: 'queued item is no longer pending',
|
|
details: { itemId },
|
|
}))
|
|
}
|
|
if (result === 'steer-unavailable') {
|
|
return Promise.resolve(err(request, {
|
|
code: 'steer-unavailable',
|
|
message: 'current turn no longer accepts steering',
|
|
details: { itemId },
|
|
}))
|
|
}
|
|
return Promise.resolve(ok(request, { accepted: true as const }))
|
|
},
|
|
|
|
cancel(request) {
|
|
const { sessionId } = request.payload
|
|
const agent = ctx.agents.get(sessionId)
|
|
if (agent === undefined) {
|
|
return Promise.resolve(err(request, {
|
|
code: 'session-not-found',
|
|
message: `session "${sessionId}" not found (not attached)`,
|
|
details: { sessionId },
|
|
}))
|
|
}
|
|
if (hasSubagentOwner(agent.session, agent)) {
|
|
return Promise.resolve(err(request, subagentOwnershipError(sessionId)))
|
|
}
|
|
agent.cancel({ kind: 'user' }, { keepInbox: true })
|
|
return Promise.resolve(ok(request, { accepted: true as const }))
|
|
},
|
|
},
|
|
|
|
subagents: {
|
|
async list(request, signal) {
|
|
try {
|
|
const entries = await ctx.subagents.listChildren(request.payload.parentSessionId, signal)
|
|
return ok(request, {
|
|
entries: entries.map(entry => entry.kind === 'child'
|
|
? {
|
|
...entry,
|
|
activity: ctx.agents.get(entry.id)?.status === 'running' ? 'running' : 'inactive',
|
|
}
|
|
: entry),
|
|
parentAvailable: ctx.agents.get(request.payload.parentSessionId) !== undefined,
|
|
})
|
|
} catch (error: unknown) {
|
|
if (signal?.aborted
|
|
|| (error instanceof SubagentError && error.code === 'CANCELLED')
|
|
|| (error instanceof SessionQueryError && error.code === 'SESSION_QUERY_ABORTED')) {
|
|
return err(request, {
|
|
code: 'cancelled',
|
|
message: 'subagent catalog read was cancelled',
|
|
details: {},
|
|
})
|
|
}
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: 'subagent catalog read failed',
|
|
details: {},
|
|
})
|
|
}
|
|
},
|
|
|
|
async history(request, signal) {
|
|
const {
|
|
parentSessionId, childSessionId, mode, beforeSeq, maxMessages,
|
|
} = request.payload
|
|
const verified = await catalogChild(ctx, {
|
|
parentSessionId, childSessionId, mode,
|
|
}, signal)
|
|
if (verified.error !== undefined) return err(request, verified.error)
|
|
try {
|
|
const snapshot = await ctx.sessionQuery.readSession(childSessionId)
|
|
signal?.throwIfAborted()
|
|
if (snapshot.session.parentSession !== parentSessionId) {
|
|
return err(request, {
|
|
code: 'subagent-unauthorized',
|
|
message: 'subagent parent changed during history read',
|
|
details: { childSessionId },
|
|
})
|
|
}
|
|
const page = historyPage(ctx, snapshot.events, beforeSeq, maxMessages)
|
|
const projections = beforeSeq === undefined
|
|
? detachedProjectionsFor(ctx, snapshot.events)
|
|
: undefined
|
|
return ok(request, { ...page, ...projections === undefined ? {} : { projections } })
|
|
} catch (error: unknown) {
|
|
if (signal?.aborted
|
|
|| (error instanceof SessionQueryError && error.code === 'SESSION_QUERY_ABORTED')) {
|
|
return err(request, {
|
|
code: 'cancelled',
|
|
message: 'subagent history read was cancelled',
|
|
details: {},
|
|
})
|
|
}
|
|
if (error instanceof SessionQueryError
|
|
&& error.code === 'SESSION_QUERY_SESSION_NOT_FOUND') {
|
|
return err(request, {
|
|
code: 'subagent-not-found',
|
|
message: 'subagent disappeared during history read',
|
|
details: { parentSessionId, childSessionId },
|
|
})
|
|
}
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: 'subagent history read failed',
|
|
details: {},
|
|
})
|
|
}
|
|
},
|
|
|
|
async prompt(request, signal) {
|
|
const { parentSessionId, childSessionId, content } = request.payload
|
|
const parent = ctx.agents.get(parentSessionId)
|
|
if (parent === undefined) {
|
|
return err(request, {
|
|
code: 'subagent-parent-unavailable',
|
|
message: `parent session "${parentSessionId}" is not live`,
|
|
details: { parentSessionId },
|
|
})
|
|
}
|
|
const verified = await catalogChild(ctx, {
|
|
parentSessionId, childSessionId, mode: 'continuable',
|
|
}, signal)
|
|
if (verified.error !== undefined) return err(request, verified.error)
|
|
try {
|
|
const messageId = await ctx.subagents.followup(parent, childSessionId, content, {
|
|
source: { kind: 'user', rpcId: request.rpcId },
|
|
signal,
|
|
})
|
|
return ok(request, { messageId })
|
|
} catch (error: unknown) {
|
|
return subagentPromptError(request, error, signal)
|
|
}
|
|
},
|
|
},
|
|
|
|
workspace: {
|
|
list(request) {
|
|
return Promise.resolve(ok(request, {
|
|
items: ctx.workspace.list().map(workspaceView),
|
|
archivedSessionIds: [...ctx.workspace.archivedSessionIds],
|
|
}))
|
|
},
|
|
|
|
// Exactly one of path/name arrives (schema refine). Existing-folder
|
|
// adoption reuses its canonical path; create-by-name rejects a name
|
|
// already present in the registry.
|
|
// TODO: the create-by-name branch lost its last product consumer when
|
|
// the Web picker collapsed onto the directory flow
|
|
// (.agents/notes/implemented/simplification/2026-07-31-one-route-to-add-a-workspace.md).
|
|
// Delete it with the wire schema's `name` member, this
|
|
// `defaults.workspaceRoot`, the client seam that carried the name
|
|
// (`WorkspaceCreateInput`, `WorkspacesService.create`'s `{ name }` arm,
|
|
// `intentName`'s name branch, the manager's "name under workspaceRoot"
|
|
// contract), and the `dsh web --workspace-root` flag plus its apps/cli
|
|
// README lines, which exist only to feed it.
|
|
async create(request) {
|
|
const { payload } = request
|
|
let path: string
|
|
if (payload.name !== undefined) {
|
|
const name = payload.name.trim()
|
|
if (name === '' || name === '.' || name === '..' || /[/\\]/.test(name)) {
|
|
return err(request, {
|
|
code: 'workspace-invalid-path',
|
|
message: `workspace name must be one non-empty path segment, got "${payload.name}"`,
|
|
details: { path: payload.name },
|
|
})
|
|
}
|
|
path = join(defaults.workspaceRoot, name)
|
|
} else {
|
|
path = payload.path as string
|
|
}
|
|
try {
|
|
const name = payload.name?.trim()
|
|
const { workspace, created } = await ensureWorkspace(
|
|
path,
|
|
name,
|
|
name !== undefined,
|
|
name !== undefined,
|
|
)
|
|
return ok(request, { workspace: workspaceView(workspace), created })
|
|
} catch (error: unknown) {
|
|
if (error instanceof WorkspaceNameConflictError) {
|
|
return err(request, {
|
|
code: 'workspace-name-conflict',
|
|
message: error.message,
|
|
details: { name: error.workspaceName },
|
|
})
|
|
}
|
|
if (error instanceof WorkspaceDirectoryCreationError) {
|
|
return err(request, { code: 'internal', message: error.message, details: {} })
|
|
}
|
|
// The registry rejects a path that does not resolve to an existing
|
|
// directory (realpath ENOENT / not-a-directory) — the business
|
|
// error of the typed-path flow, surfaced as a validation failure.
|
|
return err(request, {
|
|
code: 'workspace-invalid-path',
|
|
message: `cannot create a workspace at "${path}": ${error instanceof Error ? error.message : String(error)}`,
|
|
details: { path },
|
|
})
|
|
}
|
|
},
|
|
|
|
async rename(request) {
|
|
const { payload } = request
|
|
const workspace = ctx.workspace.get(brandWorkspaceId(payload.workspaceId))
|
|
if (workspace === undefined) return workspaceNotFound(request, payload.workspaceId)
|
|
const title = payload.title.trim()
|
|
// Uniqueness AND the same-title no-op both ride the create chain so
|
|
// they observe the state left by earlier queued renames — checked
|
|
// up front, a queued A→A could report success while an earlier A→B
|
|
// still lands afterwards.
|
|
const operation = workspaceCreationChain.then(async () => {
|
|
if (title === workspace.title) return
|
|
if (ctx.workspace.list().some(other => other.id !== workspace.id && other.title === title)) {
|
|
throw new WorkspaceNameConflictError(title)
|
|
}
|
|
await workspace.setTitle(title)
|
|
})
|
|
workspaceCreationChain = operation.then(() => undefined, () => undefined)
|
|
try {
|
|
await operation
|
|
} catch (error: unknown) {
|
|
if (error instanceof WorkspaceNameConflictError) {
|
|
return err(request, {
|
|
code: 'workspace-name-conflict',
|
|
message: error.message,
|
|
details: { name: error.workspaceName },
|
|
})
|
|
}
|
|
throw error
|
|
}
|
|
return ok(request, { workspace: workspaceView(workspace) })
|
|
},
|
|
|
|
async delete(request) {
|
|
const { workspaceId } = request.payload
|
|
const operation = workspaceCreationChain.then(() =>
|
|
ctx.workspace.delete(brandWorkspaceId(workspaceId)))
|
|
workspaceCreationChain = operation.then(() => undefined, () => undefined)
|
|
if (!await operation) return workspaceNotFound(request, workspaceId)
|
|
return ok(request, { deleted: true as const })
|
|
},
|
|
|
|
async insertSessionBefore(request) {
|
|
const { payload } = request
|
|
const workspace = ctx.workspace.get(brandWorkspaceId(payload.workspaceId))
|
|
if (workspace === undefined) return workspaceNotFound(request, payload.workspaceId)
|
|
try {
|
|
await workspace.insertSessionBefore(payload.sessionId, payload.beforeSessionId)
|
|
} catch (error: unknown) {
|
|
// Only the entity's unaccounted-id rejection is the business code;
|
|
// storage/durability failures propagate as internal errors.
|
|
if (!(error instanceof WorkspaceMoveInvalidError)) throw error
|
|
return err(request, {
|
|
code: 'workspace-move-invalid',
|
|
message: error.message,
|
|
details: {
|
|
workspaceId: payload.workspaceId,
|
|
sessionId: payload.sessionId,
|
|
...payload.beforeSessionId === undefined ? {} : { beforeSessionId: payload.beforeSessionId },
|
|
},
|
|
})
|
|
}
|
|
return ok(request, { workspace: workspaceView(workspace) })
|
|
},
|
|
|
|
async archiveSession(request) {
|
|
const { sessionId } = request.payload
|
|
try {
|
|
await ctx.workspace.archiveSession(sessionId)
|
|
} catch (error: unknown) {
|
|
// Only the registry's unknown-session rejection is the business
|
|
// code; storage/durability failures propagate as internal errors.
|
|
if (!(error instanceof WorkspaceUnknownSessionError)) throw error
|
|
return err(request, {
|
|
code: 'session-not-found',
|
|
message: error.message,
|
|
details: { sessionId },
|
|
})
|
|
}
|
|
return ok(request, { archivedSessionIds: [...ctx.workspace.archivedSessionIds] })
|
|
},
|
|
},
|
|
|
|
host: {
|
|
describe(request) {
|
|
// TODO(step2): version should read apps/cli's package.json; placeholder for now.
|
|
return Promise.resolve(ok(request, {
|
|
version: '0.0.1',
|
|
// Same source as session.create's fallback: the UI's default project
|
|
// must match where an unspecified-cwd session actually lands.
|
|
cwd: defaults.cwd,
|
|
provider: defaults.provider,
|
|
model: defaults.model,
|
|
attachedSessions: ctx.agents.list().length,
|
|
}))
|
|
},
|
|
|
|
async pickDirectory(request, signal) {
|
|
const capability = ctx.directoryPicker.capability()
|
|
if (capability.kind !== 'native') {
|
|
return err(request, {
|
|
code: 'directory-picker-unavailable',
|
|
message: `host.pickDirectory needs the native capability; the composed picker serves "${capability.kind}"`,
|
|
details: { capability: capability.kind },
|
|
})
|
|
}
|
|
try {
|
|
const path = await capability.pick(signal)
|
|
return ok(request, { path })
|
|
} catch (error: unknown) {
|
|
if (signal.aborted) {
|
|
return err(request, {
|
|
code: 'cancelled',
|
|
message: 'directory picker was aborted',
|
|
details: {},
|
|
})
|
|
}
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: `directory picker failed: ${error instanceof Error ? error.message : String(error)}`,
|
|
details: {},
|
|
})
|
|
}
|
|
},
|
|
|
|
async listDirectory(request, signal) {
|
|
const capability = ctx.directoryPicker.capability()
|
|
if (capability.kind !== 'browse') {
|
|
return err(request, {
|
|
code: 'directory-picker-unavailable',
|
|
message: `host.listDirectory needs the browse capability; the composed picker serves "${capability.kind}"`,
|
|
details: { capability: capability.kind },
|
|
})
|
|
}
|
|
try {
|
|
// The carrier's signal follows the caller: a disconnect or timeout
|
|
// stops the backend's directory scan instead of outliving it.
|
|
return ok(request, await capability.list(request.payload.path, signal))
|
|
} catch (error: unknown) {
|
|
// An abort is the caller's own timeout/disconnect, not a server
|
|
// failure — same code pickDirectory and command.execute report.
|
|
if (signal.aborted) {
|
|
return err(request, { code: 'cancelled', message: 'directory listing was aborted', details: {} })
|
|
}
|
|
return err(request, directoryError(error))
|
|
}
|
|
},
|
|
|
|
async createDirectory(request) {
|
|
const capability = ctx.directoryPicker.capability()
|
|
if (capability.kind !== 'browse') {
|
|
return err(request, {
|
|
code: 'directory-picker-unavailable',
|
|
message: `host.createDirectory needs the browse capability; the composed picker serves "${capability.kind}"`,
|
|
details: { capability: capability.kind },
|
|
})
|
|
}
|
|
try {
|
|
return ok(request, { path: await capability.createDirectory(request.payload.path, request.payload.name) })
|
|
} catch (error: unknown) {
|
|
return err(request, directoryError(error))
|
|
}
|
|
},
|
|
|
|
async openPath(request, signal) {
|
|
try {
|
|
const open = defaults.openPath
|
|
?? ((path: string, openSignal: AbortSignal) => openNativePath(path, openSignal))
|
|
await open(request.payload.path, signal)
|
|
return ok(request, { opened: true as const })
|
|
} catch (error: unknown) {
|
|
if (signal.aborted) {
|
|
return err(request, {
|
|
code: 'cancelled',
|
|
message: 'path open was aborted',
|
|
details: {},
|
|
})
|
|
}
|
|
return err(request, {
|
|
code: 'internal',
|
|
message: `path open failed: ${error instanceof Error ? error.message : String(error)}`,
|
|
details: {},
|
|
})
|
|
}
|
|
},
|
|
},
|
|
|
|
commands: {
|
|
// Both methods address one session's agent. agentFor resumes on miss
|
|
// and fences every subagent-owned identity with `agent-busy`; the
|
|
// api/commands.ts module contract owns that fence's wording, so this
|
|
// comment only notes the routing shape: clients send a sessionId for a
|
|
// published session, and resume restores an existing entity.
|
|
async list(request) {
|
|
// Missing service = the deployment omitted dsh-commands from its
|
|
// composition, not an empty catalog: fail loud instead of serving [].
|
|
const commands = ctx.get('commands')
|
|
if (commands === undefined) {
|
|
return err(request, { code: 'internal', message: 'command registry is absent: this deployment does not mount @deepseek-ai/dsh-commands in its composition (cordis.yml or explicit assembly)', details: {} })
|
|
}
|
|
const found = await agentFor(request.payload.sessionId)
|
|
if ('error' in found) return err(request, found.error)
|
|
return ok(request, { commands: commands.list(found.agent) })
|
|
},
|
|
|
|
async execute(request, signal) {
|
|
const commands = ctx.get('commands')
|
|
if (commands === undefined) {
|
|
return err(request, { code: 'internal', message: 'command registry is absent: this deployment does not mount @deepseek-ai/dsh-commands in its composition (cordis.yml or explicit assembly)', details: {} })
|
|
}
|
|
const { sessionId, line } = request.payload
|
|
const found = await agentFor(sessionId)
|
|
if ('error' in found) return err(request, found.error)
|
|
try {
|
|
// Pure admission: the executor's durable command/run + command/done
|
|
// pair (broadcast on the mux stream) carries the outcome; the
|
|
// response reports whether the line resolved to a handler, plus the
|
|
// minted pairing id so the issuing client can correlate its request
|
|
// with the flow node the lifecycle events produce.
|
|
const execution = await commands.execute(found.agent, line, signal)
|
|
return ok(request, execution === undefined
|
|
? { matched: false }
|
|
: { matched: true, commandId: execution.commandId })
|
|
} catch (error: unknown) {
|
|
if (signal.aborted) return err(request, { code: 'cancelled', message: 'command execution was aborted', details: {} })
|
|
return err(request, { code: 'internal', message: `command failed: ${String(error)}`, details: {} })
|
|
}
|
|
},
|
|
},
|
|
|
|
goals: {
|
|
// Mutations only — the read side is the 'goal' session projection.
|
|
// Every verb resolves the session's agent (agentFor: implicit cold
|
|
// resume, the command.* precedent) and acknowledges with the new CAS
|
|
// ref; the committed goal/change event carries the whole value to every
|
|
// client through the projection frames.
|
|
async create(request) {
|
|
const { objective, maxGoalRounds } = request.payload
|
|
return mutateGoal(request, (goals, agent) => goals.create(agent, {
|
|
objective,
|
|
...(maxGoalRounds !== undefined ? { maxGoalRounds } : {}),
|
|
}))
|
|
},
|
|
|
|
async edit(request) {
|
|
const { ref, objective, maxGoalRounds } = request.payload
|
|
return mutateGoal(request, (goals, agent) => goals.edit(agent, ref, {
|
|
...(objective !== undefined ? { objective } : {}),
|
|
...(maxGoalRounds !== undefined ? { maxGoalRounds } : {}),
|
|
}))
|
|
},
|
|
|
|
async pause(request) {
|
|
return mutateGoal(request, (goals, agent) => goals.pause(agent, request.payload.ref))
|
|
},
|
|
|
|
async resume(request) {
|
|
return mutateGoal(request, (goals, agent) => goals.resume(agent, request.payload.ref))
|
|
},
|
|
|
|
async complete(request) {
|
|
return mutateGoal(request, (goals, agent) => goals.complete(agent, request.payload.ref))
|
|
},
|
|
|
|
async clear(request) {
|
|
const goals = goalService()
|
|
if ('error' in goals) return err(request, goals.error)
|
|
const found = await agentFor(request.payload.sessionId)
|
|
if ('error' in found) return err(request, found.error)
|
|
try {
|
|
goals.clear(found.agent, request.payload.ref)
|
|
return ok(request, { cleared: true as const })
|
|
} catch (error: unknown) {
|
|
return goalError(request, error)
|
|
}
|
|
},
|
|
},
|
|
|
|
skills: {
|
|
// Skill lookup never touches the Agent registry: the session address
|
|
// resolves to a canonical cwd from the host-resident session header, so
|
|
// listing skills cannot create or resume an agent as a side effect.
|
|
async list(request) {
|
|
const { sessionId } = request.payload
|
|
const session = ctx.sessions.get(sessionId)
|
|
if (session === undefined) {
|
|
return err(request, {
|
|
code: 'session-not-found',
|
|
message: `session "${sessionId}" not found (not attached)`,
|
|
details: { sessionId },
|
|
})
|
|
}
|
|
if (session.header.cwd === undefined) {
|
|
// Every served session records its project at create time; a
|
|
// cwd-less header is a pre-project legacy log (not served).
|
|
return err(request, { code: 'internal', message: `session "${sessionId}" has no project cwd`, details: {} })
|
|
}
|
|
const cwd = session.header.cwd
|
|
// Same stance as the commands domain: a missing service means the
|
|
// deployment omitted dsh-skill from its composition, not an empty
|
|
// catalog. ctx.get also keeps this handler independent of the gateway
|
|
// plugin's inject list (an undeclared `ctx.skills` property read
|
|
// fails the reflect proxy).
|
|
const skillRegistry = ctx.get('skills')
|
|
if (skillRegistry === undefined) {
|
|
return err(request, { code: 'internal', message: 'skill registry is absent: this deployment does not mount @deepseek-ai/dsh-skill in its composition (cordis.yml or explicit assembly)', details: {} })
|
|
}
|
|
try {
|
|
const skills = (await skillRegistry.list({ cwd }))
|
|
.filter(skill => skill.invocation.modelInvocable && skill.invocation.userInvocable)
|
|
return ok(request, {
|
|
skills: skills.map(skill => ({
|
|
name: skill.name,
|
|
description: skill.description,
|
|
...skill.whenToUse === undefined ? {} : { whenToUse: skill.whenToUse },
|
|
})),
|
|
})
|
|
} catch (error: unknown) {
|
|
return err(request, { code: 'internal', message: `skill listing failed: ${String(error)}`, details: {} })
|
|
}
|
|
},
|
|
},
|
|
|
|
settings: {
|
|
describe(request) {
|
|
const settings = ctx.get('settings')
|
|
if (settings === undefined) return Promise.resolve(err(request, settingsAbsent()))
|
|
const exposed = exposedNamespaces()
|
|
return Promise.resolve(ok(request, {
|
|
writable: settings.writable,
|
|
namespaces: settings.describe({ redactSecrets: true })
|
|
.filter(descriptor => exposed.has(String(descriptor.ns)))
|
|
.map(namespaceView),
|
|
}))
|
|
},
|
|
update: request => settingsWrite(request, request.payload.ns, 'update', request.payload.patch, request.payload.expectedRevision),
|
|
replace: request => settingsWrite(request, request.payload.ns, 'replace', request.payload.section, request.payload.expectedRevision),
|
|
mutate: request => settingsWrite(request, request.payload.ns, 'mutate', request.payload.ops, request.payload.expectedRevision),
|
|
},
|
|
|
|
credentials: {
|
|
async describe(request) {
|
|
const credentials = ctx.get('credentials')
|
|
if (credentials === undefined) return err(request, credentialsAbsent())
|
|
const entries = await Promise.all(request.payload.refs.map(async (ref) => {
|
|
const info = await credentials.describe(credentialRef(ref))
|
|
const view: CredentialView = {
|
|
configured: info.configured,
|
|
...info.source === undefined ? {} : { source: info.source },
|
|
writable: info.writable,
|
|
}
|
|
return [ref, view] as const
|
|
}))
|
|
return ok(request, { credentials: Object.fromEntries(entries) })
|
|
},
|
|
|
|
async set(request) {
|
|
const credentials = ctx.get('credentials')
|
|
if (credentials === undefined) return err(request, credentialsAbsent())
|
|
const { ref, value } = request.payload
|
|
try {
|
|
await credentials.set(credentialRef(ref), value)
|
|
} catch (error: unknown) {
|
|
return err(request, {
|
|
code: 'credential-rejected',
|
|
message: error instanceof Error ? error.message : String(error),
|
|
details: { ref },
|
|
})
|
|
}
|
|
return ok(request, {})
|
|
},
|
|
|
|
async unset(request) {
|
|
const credentials = ctx.get('credentials')
|
|
if (credentials === undefined) return err(request, credentialsAbsent())
|
|
const { ref } = request.payload
|
|
try {
|
|
await credentials.unset(credentialRef(ref))
|
|
} catch (error: unknown) {
|
|
return err(request, {
|
|
code: 'credential-rejected',
|
|
message: error instanceof Error ? error.message : String(error),
|
|
details: { ref },
|
|
})
|
|
}
|
|
return ok(request, {})
|
|
},
|
|
},
|
|
|
|
llm: {
|
|
providers(request) {
|
|
const registered = ctx.llm.listProviders()
|
|
const active = new Set(registered.map(provider => provider.id))
|
|
const directory = ctx.llm.listConfigurableProviders()
|
|
const declared = new Set(directory.map(entry => entry.provider))
|
|
const views = directory.map(entry => ({
|
|
provider: entry.provider,
|
|
displayName: entry.displayName,
|
|
settingsNs: entry.settingsNs,
|
|
settingsPath: [...entry.settingsPath],
|
|
active: active.has(entry.provider),
|
|
}))
|
|
// Routes registered without a directory declaration still appear —
|
|
// they exist and serve models — just with no settings address.
|
|
for (const provider of registered) {
|
|
if (declared.has(provider.id)) continue
|
|
views.push({
|
|
provider: provider.id,
|
|
displayName: provider.name,
|
|
settingsNs: '',
|
|
settingsPath: [],
|
|
active: true,
|
|
})
|
|
}
|
|
return Promise.resolve(ok(request, { providers: views }))
|
|
},
|
|
|
|
async models(request) {
|
|
return ok(request, await buildModelCatalog(ctx))
|
|
},
|
|
},
|
|
|
|
events: {
|
|
mux(_request, signal) {
|
|
const queue = new FrameQueue<RpcRequest<MuxFrame>>()
|
|
muxQueues.add(queue)
|
|
for (const session of ctx.sessions.list()) {
|
|
subscribeSession(queue, session)
|
|
}
|
|
for (const pending of pendingQuestions.values()) {
|
|
queue.push({
|
|
rpcId: pending.rpcId,
|
|
payload: {
|
|
type: 'question/requested', sessionId: pending.sessionId,
|
|
questions: pending.questions,
|
|
},
|
|
})
|
|
}
|
|
// Refresh recovery: still-pending approval questions replay with their
|
|
// stable rpcId so a reconnecting client can still answer them.
|
|
for (const pending of pendingApprovals.values()) queue.push(requestedFrame(pending))
|
|
// Queue snapshot baseline (pendingQuestions precedent): frames replayed
|
|
// in arrival order per session; a reconnecting client rebuilds its
|
|
// queue view from these alone.
|
|
for (const [sessionId, items] of queuedMirror) {
|
|
queue.push(frame({
|
|
type: 'session/queue',
|
|
sessionId,
|
|
items: items.map(item => ({
|
|
id: item.id,
|
|
placement: item.placement,
|
|
message: item.message,
|
|
})),
|
|
}))
|
|
}
|
|
// Per-session open-call table for result-view pairing. Bounded by the
|
|
// per-turn call count: entries clear on turn/end; a table miss (stream
|
|
// opened mid-turn) backscans the session's in-memory events instead.
|
|
const openCalls = new Map<SessionId, Map<string, { name: string; args: unknown }>>()
|
|
const disposers = [
|
|
ctx.on('session/event', (session: Session, event: SessionEvent) => {
|
|
if (event.type === 'tool/call') {
|
|
const data = event.data as ToolCallData
|
|
try {
|
|
let table = openCalls.get(session.id)
|
|
if (table === undefined) openCalls.set(session.id, table = new Map<string, { name: string; args: unknown }>())
|
|
table.set(data.callId, { name: data.name, args: JSON.parse(data.arguments) })
|
|
} catch {
|
|
// Unparseable model arguments: leave the table unset; the result view soft-falls.
|
|
}
|
|
} else if (event.type === 'turn/end') {
|
|
openCalls.delete(session.id)
|
|
}
|
|
const view = viewFor(ctx, event, callId =>
|
|
openCalls.get(session.id)?.get(callId) ?? backscanArgs(session.events, callId))
|
|
queue.push(frame({ type: 'session/event', sessionId: session.id, event, ...view === undefined ? {} : { view } }))
|
|
}),
|
|
ctx.on('session/created', (session: Session) => {
|
|
subscribeSession(queue, session)
|
|
}),
|
|
ctx.on('session/disposed', (session: Session) => {
|
|
openCalls.delete(session.id)
|
|
}),
|
|
]
|
|
return queue.iterate(signal, () => {
|
|
muxQueues.delete(queue)
|
|
for (const dispose of disposers) dispose()
|
|
})
|
|
},
|
|
|
|
host(_request, signal) {
|
|
const queue = new FrameQueue<RpcRequest<HostFrame>>()
|
|
const committedWorkspaceIds = new Set(
|
|
ctx.workspace.list().map(workspace => String(workspace.id)),
|
|
)
|
|
// Frame-dedup baseline, same posture as committedWorkspaceIds: the
|
|
// stream opens against the current set; workspace.list re-baselines
|
|
// reconnecting clients, so only later changes need frames.
|
|
let archivedSessionIds = ctx.workspace.archivedSessionIds
|
|
const disposers = [
|
|
ctx.on('session/created', (session: Session) => {
|
|
queue.push(frame({
|
|
type: 'host/session-added',
|
|
sessionId: session.id,
|
|
// Derived at frame time like summarize(); a just-created session
|
|
// has run no turn yet, so this is constantly true in practice.
|
|
blank: sessionBlank(session),
|
|
// Including cwd lets the client group the new session without refreshing the list.
|
|
...sessionListFields(session.header),
|
|
}))
|
|
}),
|
|
ctx.on('session/disposed', (session: Session) => {
|
|
queue.push(frame({ type: 'host/session-removed', sessionId: session.id }))
|
|
}),
|
|
ctx.on('agent/status', (agent: Agent, status: AgentStatus) => {
|
|
queue.push(frame({ type: 'host/session-status', sessionId: agent.id, running: status === 'running' }))
|
|
}),
|
|
ctx.on('agent/error', (agent: Agent, _turn: number, _step: number, error: unknown) => {
|
|
queue.push(frame({ type: 'host/agent-error', sessionId: agent.id, message: errorChain(error) }))
|
|
}),
|
|
ctx.on('domain/changed', (change) => {
|
|
if (change.domain !== 'workspace') return
|
|
if (change.table === '') {
|
|
if (change.operation !== 'put') return
|
|
const state = workspaceDomainState.parse(change.value)
|
|
for (const workspaceId of state.workspaceIds) {
|
|
if (committedWorkspaceIds.has(workspaceId)) continue
|
|
const workspace = ctx.workspace.get(workspaceId)
|
|
if (workspace === undefined) {
|
|
throw new Error(`committed workspace registry references missing workspace "${workspaceId}"`)
|
|
}
|
|
committedWorkspaceIds.add(workspaceId)
|
|
queue.push(frame({ type: 'host/workspace-changed', workspace: workspaceView(workspace) }))
|
|
}
|
|
if (state.archivedSessionIds.length !== archivedSessionIds.length
|
|
|| state.archivedSessionIds.some((id, index) => id !== archivedSessionIds[index])) {
|
|
archivedSessionIds = state.archivedSessionIds
|
|
queue.push(frame({
|
|
type: 'host/archived-sessions-changed',
|
|
archivedSessionIds: [...state.archivedSessionIds],
|
|
}))
|
|
}
|
|
return
|
|
}
|
|
if (change.table !== 'workspaces') return
|
|
if (change.operation === 'deleted') {
|
|
if (!committedWorkspaceIds.delete(change.key)) return
|
|
queue.push(frame({
|
|
type: 'host/workspace-removed',
|
|
workspaceId: change.key as WorkspaceId,
|
|
}))
|
|
return
|
|
}
|
|
if (!committedWorkspaceIds.has(change.key)) return
|
|
// Existing-entity table writes are complete attach/touch commits.
|
|
// A new entity's first put waits for the global registry write above.
|
|
queue.push(frame({
|
|
type: 'host/workspace-changed',
|
|
workspace: changedWorkspaceView(change.key, change.value),
|
|
}))
|
|
}),
|
|
ctx.on('commands/change', () => {
|
|
queue.push(frame({ type: 'host/commands-changed' }))
|
|
}),
|
|
ctx.on('settings/document-updated', (ns) => {
|
|
// The RAW-section event, not the resolved one: a field going from
|
|
// inherited to overridden leaves the resolved value equal, and a
|
|
// configuration client still has to re-read (its held revision is
|
|
// stale, and the field's meaning changed).
|
|
const name = String(ns)
|
|
queue.push(frame({ type: 'host/settings-changed', ns: name }))
|
|
// A provider's own settings carry its model catalog and endpoint,
|
|
// so a change there invalidates the model list even when the route
|
|
// set is untouched — `llm/adapters-updated` alone misses it.
|
|
if (modelProviderNamespaces().has(name)) queue.push(frame({ type: 'host/models-changed' }))
|
|
}),
|
|
ctx.on('credentials/updated', (ref) => {
|
|
queue.push(frame({ type: 'host/credentials-changed', ref: String(ref) }))
|
|
}),
|
|
ctx.on('llm/adapters-updated', () => {
|
|
queue.push(frame({ type: 'host/models-changed' }))
|
|
}),
|
|
]
|
|
return queue.iterate(signal, () => { for (const dispose of disposers) dispose() })
|
|
},
|
|
},
|
|
|
|
respond(message: ClientResponse): Promise<RpcReceipt> {
|
|
// Route by the echoed rpcId (the wire correlation): approvals first,
|
|
// then questions — the two registries share one id space of UUIDs.
|
|
const approval = pendingApprovals.get(message.rpcId)
|
|
if (approval !== undefined) {
|
|
if (!message.result.ok) return Promise.resolve({ accepted: false, reason: 'bad-response' })
|
|
const parsed = approvalResponsePayloadSchema.safeParse(message.result.value)
|
|
// The payload's audit correlation must match the entry the rpcId routed
|
|
// to — a mismatched answer is malformed, not merely late.
|
|
if (!parsed.success || parsed.data.approvalId !== approval.approvalId || parsed.data.sessionId !== approval.sessionId) {
|
|
return Promise.resolve({ accepted: false, reason: 'bad-response' })
|
|
}
|
|
approval.resolve(parsed.data.outcome)
|
|
return Promise.resolve({ accepted: true })
|
|
}
|
|
const pending = pendingQuestions.get(message.rpcId)
|
|
if (pending === undefined) return Promise.resolve({ accepted: false, reason: 'not-pending' })
|
|
if (!message.result.ok) {
|
|
if (message.result.error.code !== 'cancelled') {
|
|
return Promise.resolve({ accepted: false, reason: 'bad-response' })
|
|
}
|
|
claimQuestion(pending, 'cancelled')
|
|
pending.reject(new UserInteractionError(
|
|
'the user cancelled ask_user_question', 'ASK_CANCELLED'))
|
|
return Promise.resolve({ accepted: true })
|
|
}
|
|
const parsed = questionResponsePayloadSchema.safeParse(message.result.value)
|
|
if (!parsed.success) {
|
|
return Promise.resolve({ accepted: false, reason: 'bad-response' })
|
|
}
|
|
const payload: QuestionResponsePayload = {
|
|
sessionId: parsed.data.sessionId,
|
|
answer: {
|
|
answers: parsed.data.answer.answers.map(answer => ({
|
|
id: answer.id,
|
|
selected: answer.selected,
|
|
...(answer.custom === undefined ? {} : { custom: answer.custom }),
|
|
})),
|
|
},
|
|
}
|
|
if (!matchesQuestions(payload, pending)) {
|
|
return Promise.resolve({ accepted: false, reason: 'bad-response' })
|
|
}
|
|
claimQuestion(pending, 'answered')
|
|
pending.resolve(payload.answer)
|
|
return Promise.resolve({ accepted: true })
|
|
},
|
|
}
|
|
}
|