fix(atlas): harden task session reuse

This commit is contained in:
HaD0Yun
2026-03-18 17:31:27 +09:00
parent 8adf6a2c47
commit 8859da5fef
8 changed files with 385 additions and 36 deletions
+2 -2
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@@ -2,12 +2,12 @@ import type { PluginInput } from "@opencode-ai/plugin"
import { createAtlasEventHandler } from "./event-handler"
import { createToolExecuteAfterHandler } from "./tool-execute-after"
import { createToolExecuteBeforeHandler } from "./tool-execute-before"
import type { AtlasHookOptions, SessionState } from "./types"
import type { AtlasHookOptions, PendingTaskRef, SessionState } from "./types"
export function createAtlasHook(ctx: PluginInput, options?: AtlasHookOptions) {
const sessions = new Map<string, SessionState>()
const pendingFilePaths = new Map<string, string>()
const pendingTaskRefs = new Map<string, { key: string; label: string; title: string } | null>()
const pendingTaskRefs = new Map<string, PendingTaskRef>()
const autoCommit = options?.autoCommit ?? true
function getState(sessionID: string): SessionState {
@@ -4,7 +4,7 @@ import { existsSync, mkdirSync, rmSync, writeFileSync } from "node:fs"
import { tmpdir } from "node:os"
import { join } from "node:path"
import { createOpencodeClient } from "@opencode-ai/sdk"
import type { AssistantMessage } from "@opencode-ai/sdk"
import type { AssistantMessage, Session } from "@opencode-ai/sdk"
import type { BoulderState } from "../../features/boulder-state"
import { clearBoulderState, writeBoulderState } from "../../features/boulder-state"
@@ -52,6 +52,23 @@ describe("Atlas final-wave approval gate regressions", () => {
response: new Response(),
}))
Reflect.set(client.session, "get", async ({ path }: { path: { id: string } }) => {
const parentID = path.id === "ses_nested_scope_review"
? "atlas-nested-final-wave-session"
: path.id.startsWith("ses_parallel_review_")
? "atlas-parallel-final-wave-session"
: "main-session-123"
return {
data: {
id: path.id,
parentID,
} as Session,
request: new Request(`http://localhost/session/${path.id}`),
response: new Response(),
}
})
return {
directory: testDirectory,
project: {} as AtlasHookContext["project"],
@@ -60,10 +60,18 @@ describe("Atlas final verification approval gate", () => {
}
})
Reflect.set(client.session, "get", async () => {
Reflect.set(client.session, "get", async ({ path }: { path: { id: string } }) => {
const parentID = path.id === "ses_final_wave_review"
? "atlas-final-wave-session"
: path.id === "ses_feature_task"
? "atlas-non-final-session"
: "main-session-123"
return {
data: { parentID: "main-session-123" } as Session,
request: new Request("http://localhost/session/main-session-123"),
data: {
id: path.id,
parentID,
} as Session,
request: new Request(`http://localhost/session/${path.id}`),
response: new Response(),
}
})
+215 -14
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@@ -10,6 +10,7 @@ import {
} from "../../features/boulder-state"
import type { BoulderState } from "../../features/boulder-state"
import { _resetForTesting, subagentSessions, updateSessionAgent } from "../../features/claude-code-session-state"
import type { PendingTaskRef } from "./types"
const TEST_STORAGE_ROOT = join(tmpdir(), `atlas-message-storage-${randomUUID()}`)
const TEST_MESSAGE_STORAGE = join(TEST_STORAGE_ROOT, "message")
@@ -41,19 +42,32 @@ describe("atlas hook", () => {
let TEST_DIR: string
let SISYPHUS_DIR: string
function createMockPluginInput(overrides?: { promptMock?: ReturnType<typeof mock> }) {
function createMockPluginInput(overrides?: {
promptMock?: ReturnType<typeof mock>
sessionGetMock?: ReturnType<typeof mock>
}) {
const promptMock = overrides?.promptMock ?? mock(() => Promise.resolve())
const sessionGetMock = overrides?.sessionGetMock ?? mock(async ({ path }: { path: { id: string } }) => ({
data: {
id: path.id,
parentID: path.id.startsWith("ses_") ? "session-1" : "main-session-123",
},
}))
return {
directory: TEST_DIR,
client: {
session: {
get: async () => ({ data: { parentID: "main-session-123" } }),
get: sessionGetMock,
prompt: promptMock,
promptAsync: promptMock,
},
},
_promptMock: promptMock,
} as unknown as Parameters<typeof createAtlasHook>[0] & { _promptMock: ReturnType<typeof mock> }
_sessionGetMock: sessionGetMock,
} as unknown as Parameters<typeof createAtlasHook>[0] & {
_promptMock: ReturnType<typeof mock>
_sessionGetMock: ReturnType<typeof mock>
}
}
function setupMessageStorage(sessionID: string, agent: string): void {
@@ -431,7 +445,7 @@ describe("atlas hook", () => {
})
const pendingFilePaths = new Map<string, string>()
const pendingTaskRefs = new Map<string, { key: string; label: string; title: string } | null>()
const pendingTaskRefs = new Map<string, PendingTaskRef>()
const beforeHandler = createToolExecuteBeforeHandler({
ctx: createMockPluginInput(),
pendingFilePaths,
@@ -607,25 +621,212 @@ session_id: ses_auth_flow_123
{ args: { prompt: "Follow up on previous task", session_id: "ses_old_task_111" } }
)
await hook["tool.execute.after"](
{ tool: "task", sessionID, callID: "call-resume-old-task" },
{
title: "Sisyphus Task",
output: `Task continued successfully
const output = {
title: "Sisyphus Task",
output: `Task continued successfully
<task_metadata>
session_id: ses_old_task_111
</task_metadata>`,
metadata: {
agent: "sisyphus-junior",
category: "deep",
},
}
metadata: {
agent: "sisyphus-junior",
category: "deep",
},
}
await hook["tool.execute.after"](
{ tool: "task", sessionID, callID: "call-resume-old-task" },
output
)
// then - Atlas does not poison task 2's preferred session mapping
const updatedState = readBoulderState(TEST_DIR)
expect(updatedState?.task_sessions?.["todo:2"]).toBeUndefined()
expect(output.output).not.toContain('task(session_id="ses_old_task_111"')
cleanupMessageStorage(sessionID)
})
test("should not reuse an explicitly resumed session id in completion reminders", async () => {
// given - current plan is on task 2 with an existing tracked session
const sessionID = "session-explicit-resume-reminder-test"
setupMessageStorage(sessionID, "atlas")
const planPath = join(TEST_DIR, "explicit-resume-reminder-plan.md")
writeFileSync(planPath, `# Plan
## TODOs
- [x] 1. Implement auth flow
- [ ] 2. Add API validation
`)
writeBoulderState(TEST_DIR, {
active_plan: planPath,
started_at: "2026-01-02T10:00:00Z",
session_ids: ["session-1"],
plan_name: "explicit-resume-reminder-plan",
task_sessions: {
"todo:2": {
task_key: "todo:2",
task_label: "2",
task_title: "Add API validation",
session_id: "ses_tracked_current_task",
updated_at: "2026-01-02T10:00:00Z",
},
},
})
const hook = createAtlasHook(createMockPluginInput())
const output = {
title: "Sisyphus Task",
output: `Task continued successfully
<task_metadata>
session_id: ses_old_task_111
</task_metadata>`,
metadata: {},
}
// when
await hook["tool.execute.before"](
{ tool: "task", sessionID, callID: "call-explicit-resume-reminder" },
{ args: { prompt: "Follow up on previous task", session_id: "ses_old_task_111" } }
)
await hook["tool.execute.after"](
{ tool: "task", sessionID, callID: "call-explicit-resume-reminder" },
output
)
// then
expect(output.output).not.toContain('task(session_id="ses_old_task_111"')
expect(output.output).toContain("ses_tracked_current_task")
cleanupMessageStorage(sessionID)
})
test("should skip persistence when multiple in-flight task calls claim the same top-level task", async () => {
// given
const sessionID = "session-parallel-task-collision-test"
setupMessageStorage(sessionID, "atlas")
const planPath = join(TEST_DIR, "parallel-task-collision-plan.md")
writeFileSync(planPath, `# Plan
## TODOs
- [ ] 1. Implement auth flow
- [ ] 2. Add API validation
`)
writeBoulderState(TEST_DIR, {
active_plan: planPath,
started_at: "2026-01-02T10:00:00Z",
session_ids: ["session-1"],
plan_name: "parallel-task-collision-plan",
})
const pendingFilePaths = new Map<string, string>()
const pendingTaskRefs = new Map<string, PendingTaskRef>()
const beforeHandler = createToolExecuteBeforeHandler({
ctx: createMockPluginInput(),
pendingFilePaths,
pendingTaskRefs,
})
const afterHandler = createToolExecuteAfterHandler({
ctx: createMockPluginInput(),
pendingFilePaths,
pendingTaskRefs,
autoCommit: true,
getState: () => ({ promptFailureCount: 0 }),
})
// when - two task() calls start before either one completes
await beforeHandler(
{ tool: "task", sessionID, callID: "call-task-first" },
{ args: { prompt: "Implement auth flow part 1" } }
)
await beforeHandler(
{ tool: "task", sessionID, callID: "call-task-second" },
{ args: { prompt: "Implement auth flow part 2" } }
)
const secondPendingTaskRef = pendingTaskRefs.get("call-task-second")
await afterHandler(
{ tool: "task", sessionID, callID: "call-task-second" },
{
title: "Sisyphus Task",
output: `Task completed successfully
<task_metadata>
session_id: ses_parallel_collision_222
</task_metadata>`,
metadata: {},
}
)
// then
expect(secondPendingTaskRef).toEqual({
kind: "skip",
reason: "ambiguous_task_key",
task: {
key: "todo:1",
label: "1",
title: "Implement auth flow",
},
})
const updatedState = readBoulderState(TEST_DIR)
expect(updatedState?.task_sessions?.["todo:1"]).toBeUndefined()
cleanupMessageStorage(sessionID)
})
test("should ignore extracted session ids that are outside the active boulder lineage", async () => {
// given
const sessionID = "session-untrusted-session-id-test"
setupMessageStorage(sessionID, "atlas")
const planPath = join(TEST_DIR, "untrusted-session-id-plan.md")
writeFileSync(planPath, `# Plan
## TODOs
- [ ] 1. Implement auth flow
`)
writeBoulderState(TEST_DIR, {
active_plan: planPath,
started_at: "2026-01-02T10:00:00Z",
session_ids: ["session-1"],
plan_name: "untrusted-session-id-plan",
})
const hook = createAtlasHook(createMockPluginInput({
sessionGetMock: mock(async ({ path }: { path: { id: string } }) => ({
data: {
id: path.id,
parentID: path.id === "ses_untrusted_999" ? "session-outside-lineage" : "main-session-123",
},
})),
}))
const output = {
title: "Sisyphus Task",
output: `Task completed successfully
<task_metadata>
session_id: ses_untrusted_999
</task_metadata>`,
metadata: {},
}
// when
await hook["tool.execute.after"](
{ tool: "task", sessionID },
output
)
// then
const updatedState = readBoulderState(TEST_DIR)
expect(updatedState?.task_sessions?.["todo:1"]).toBeUndefined()
expect(output.output).not.toContain('task(session_id="ses_untrusted_999"')
expect(output.output).toContain('task(session_id="<session_id>"')
cleanupMessageStorage(sessionID)
})
+31
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@@ -1,3 +1,8 @@
import type { PluginInput } from "@opencode-ai/plugin"
import { log } from "../../shared/logger"
import { isSessionInBoulderLineage } from "./boulder-session-lineage"
import { HOOK_NAME } from "./hook-name"
export function extractSessionIdFromOutput(output: string): string | undefined {
const taskMetadataBlocks = [...output.matchAll(/<task_metadata>([\s\S]*?)<\/task_metadata>/gi)]
const lastTaskMetadataBlock = taskMetadataBlocks.at(-1)?.[1]
@@ -11,3 +16,29 @@ export function extractSessionIdFromOutput(output: string): string | undefined {
const explicitSessionMatches = [...output.matchAll(/Session ID:\s*(ses_[a-zA-Z0-9_]+)/g)]
return explicitSessionMatches.at(-1)?.[1]
}
export async function validateSubagentSessionId(input: {
client: PluginInput["client"]
sessionID?: string
lineageSessionIDs: string[]
}): Promise<string | undefined> {
if (!input.sessionID || input.lineageSessionIDs.length === 0) {
return undefined
}
const belongsToLineage = await isSessionInBoulderLineage({
client: input.client,
sessionID: input.sessionID,
boulderSessionIDs: input.lineageSessionIDs,
})
if (!belongsToLineage) {
log(`[${HOOK_NAME}] Ignoring extracted session id outside active lineage`, {
sessionID: input.sessionID,
lineageSessionIDs: input.lineageSessionIDs,
})
return undefined
}
return input.sessionID
}
+70 -12
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@@ -14,7 +14,7 @@ import { shouldPauseForFinalWaveApproval } from "./final-wave-approval-gate"
import { HOOK_NAME } from "./hook-name"
import { DIRECT_WORK_REMINDER } from "./system-reminder-templates"
import { isSisyphusPath } from "./sisyphus-path"
import { extractSessionIdFromOutput } from "./subagent-session-id"
import { extractSessionIdFromOutput, validateSubagentSessionId } from "./subagent-session-id"
import {
buildCompletionGate,
buildFinalWaveApprovalReminder,
@@ -22,17 +22,56 @@ import {
buildStandaloneVerificationReminder,
} from "./verification-reminders"
import { isWriteOrEditToolName } from "./write-edit-tool-policy"
import type { SessionState } from "./types"
import type { ToolExecuteAfterInput, ToolExecuteAfterOutput } from "./types"
import type { PendingTaskRef, SessionState } from "./types"
import type { ToolExecuteAfterInput, ToolExecuteAfterOutput, TrackedTopLevelTaskRef } from "./types"
function resolvePreferredSessionId(currentSessionId?: string, trackedSessionId?: string): string {
return currentSessionId ?? trackedSessionId ?? "<session_id>"
}
function resolveTaskContext(
pendingTaskRef: PendingTaskRef | undefined,
planPath: string,
): {
currentTask: TrackedTopLevelTaskRef | null
shouldSkipTaskSessionUpdate: boolean
shouldIgnoreCurrentSessionId: boolean
} {
if (!pendingTaskRef) {
return {
currentTask: readCurrentTopLevelTask(planPath),
shouldSkipTaskSessionUpdate: false,
shouldIgnoreCurrentSessionId: false,
}
}
if (pendingTaskRef.kind === "track") {
return {
currentTask: pendingTaskRef.task,
shouldSkipTaskSessionUpdate: false,
shouldIgnoreCurrentSessionId: false,
}
}
if (pendingTaskRef.reason === "explicit_resume") {
return {
currentTask: readCurrentTopLevelTask(planPath),
shouldSkipTaskSessionUpdate: true,
shouldIgnoreCurrentSessionId: true,
}
}
return {
currentTask: pendingTaskRef.task,
shouldSkipTaskSessionUpdate: true,
shouldIgnoreCurrentSessionId: true,
}
}
export function createToolExecuteAfterHandler(input: {
ctx: PluginInput
pendingFilePaths: Map<string, string>
pendingTaskRefs: Map<string, { key: string; label: string; title: string } | null>
pendingTaskRefs: Map<string, PendingTaskRef>
autoCommit: boolean
getState: (sessionID: string) => SessionState
}): (toolInput: ToolExecuteAfterInput, toolOutput: ToolExecuteAfterOutput) => Promise<void> {
@@ -83,15 +122,16 @@ export function createToolExecuteAfterHandler(input: {
if (toolOutput.output && typeof toolOutput.output === "string") {
const gitStats = collectGitDiffStats(ctx.directory)
const fileChanges = formatFileChanges(gitStats)
const subagentSessionId = extractSessionIdFromOutput(toolOutput.output)
const extractedSessionId = extractSessionIdFromOutput(toolOutput.output)
const boulderState = readBoulderState(ctx.directory)
if (boulderState) {
const progress = getPlanProgress(boulderState.active_plan)
const shouldSkipTaskSessionUpdate = pendingTaskRef === null
const currentTask = shouldSkipTaskSessionUpdate
? null
: pendingTaskRef ?? readCurrentTopLevelTask(boulderState.active_plan)
const {
currentTask,
shouldSkipTaskSessionUpdate,
shouldIgnoreCurrentSessionId,
} = resolveTaskContext(pendingTaskRef, boulderState.active_plan)
const trackedTaskSession = currentTask
? getTaskSessionState(ctx.directory, currentTask.key)
: null
@@ -105,7 +145,16 @@ export function createToolExecuteAfterHandler(input: {
})
}
if (currentTask && subagentSessionId) {
const lineageSessionIDs = toolInput.sessionID && !boulderState.session_ids.includes(toolInput.sessionID)
? [...boulderState.session_ids, toolInput.sessionID]
: boulderState.session_ids
const subagentSessionId = await validateSubagentSessionId({
client: ctx.client,
sessionID: extractedSessionId,
lineageSessionIDs,
})
if (currentTask && subagentSessionId && !shouldSkipTaskSessionUpdate) {
upsertTaskSessionState(ctx.directory, {
taskKey: currentTask.key,
taskLabel: currentTask.label,
@@ -117,7 +166,7 @@ export function createToolExecuteAfterHandler(input: {
}
const preferredSessionId = resolvePreferredSessionId(
subagentSessionId,
shouldIgnoreCurrentSessionId ? undefined : subagentSessionId,
trackedTaskSession?.session_id,
)
@@ -175,8 +224,17 @@ ${
waitingForFinalWaveApproval: shouldPauseForApproval,
})
} else {
const lineageSessionIDs = toolInput.sessionID ? [toolInput.sessionID] : []
const subagentSessionId = await validateSubagentSessionId({
client: ctx.client,
sessionID: extractedSessionId,
lineageSessionIDs,
})
const preferredSessionId = pendingTaskRef?.kind === "skip"
? undefined
: subagentSessionId
toolOutput.output += `\n<system-reminder>\n${buildStandaloneVerificationReminder(
resolvePreferredSessionId(subagentSessionId),
resolvePreferredSessionId(preferredSessionId),
)}\n</system-reminder>`
log(`[${HOOK_NAME}] Verification reminder appended for orchestrator`, {
+30 -4
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@@ -6,18 +6,23 @@ import { readBoulderState, readCurrentTopLevelTask } from "../../features/boulde
import { HOOK_NAME } from "./hook-name"
import { ORCHESTRATOR_DELEGATION_REQUIRED, SINGLE_TASK_DIRECTIVE } from "./system-reminder-templates"
import { isSisyphusPath } from "./sisyphus-path"
import type { PendingTaskRef, TrackedTopLevelTaskRef } from "./types"
import { isWriteOrEditToolName } from "./write-edit-tool-policy"
export function createToolExecuteBeforeHandler(input: {
ctx: PluginInput
pendingFilePaths: Map<string, string>
pendingTaskRefs: Map<string, { key: string; label: string; title: string } | null>
pendingTaskRefs: Map<string, PendingTaskRef>
}): (
toolInput: { tool: string; sessionID?: string; callID?: string },
toolOutput: { args: Record<string, unknown>; message?: string }
) => Promise<void> {
const { ctx, pendingFilePaths, pendingTaskRefs } = input
function trackTask(callID: string, task: TrackedTopLevelTaskRef): void {
pendingTaskRefs.set(callID, { kind: "track", task })
}
return async (toolInput, toolOutput): Promise<void> => {
if (!(await isCallerOrchestrator(toolInput.sessionID, ctx.client))) {
return
@@ -48,18 +53,39 @@ export function createToolExecuteBeforeHandler(input: {
if (toolInput.callID) {
const requestedSessionId = toolOutput.args.session_id as string | undefined
if (requestedSessionId) {
pendingTaskRefs.set(toolInput.callID, null)
pendingTaskRefs.set(toolInput.callID, {
kind: "skip",
reason: "explicit_resume",
})
} else {
const boulderState = readBoulderState(ctx.directory)
const currentTask = boulderState
? readCurrentTopLevelTask(boulderState.active_plan)
: null
if (currentTask) {
pendingTaskRefs.set(toolInput.callID, {
const task = {
key: currentTask.key,
label: currentTask.label,
title: currentTask.title,
})
}
const hasExistingClaim = [...pendingTaskRefs.values()].some((pendingTaskRef) => (
pendingTaskRef.kind === "track" && pendingTaskRef.task.key === task.key
))
if (hasExistingClaim) {
pendingTaskRefs.set(toolInput.callID, {
kind: "skip",
reason: "ambiguous_task_key",
task,
})
log(`[${HOOK_NAME}] Skipping task session persistence for ambiguous task key`, {
sessionID: toolInput.sessionID,
callID: toolInput.callID,
taskKey: task.key,
})
} else {
trackTask(toolInput.callID, task)
}
}
}
}
+8
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@@ -1,5 +1,6 @@
import type { AgentOverrides } from "../../config"
import type { BackgroundManager } from "../../features/background-agent"
import type { TopLevelTaskRef } from "../../features/boulder-state"
export type ModelInfo = { providerID: string; modelID: string }
@@ -25,6 +26,13 @@ export interface ToolExecuteAfterOutput {
metadata: Record<string, unknown>
}
export type TrackedTopLevelTaskRef = Pick<TopLevelTaskRef, "key" | "label" | "title">
export type PendingTaskRef =
| { kind: "track"; task: TrackedTopLevelTaskRef }
| { kind: "skip"; reason: "explicit_resume" }
| { kind: "skip"; reason: "ambiguous_task_key"; task: TrackedTopLevelTaskRef }
export interface SessionState {
lastEventWasAbortError?: boolean
lastContinuationInjectedAt?: number