| 1 | import log from 'electron-log/main.js' |
| 2 | import type { SessionJobKind } from '../db/database' |
| 3 | import type { FinalizeContext } from './types' |
| 4 | import type { GenerationContext } from './context' |
| 5 | import { |
| 6 | finalizeGenerationFailure, |
| 7 | resolveGenerationFailureSessionStatus |
| 8 | } from './finalization' |
| 9 | import { isCancellationMessage, normalizeRestoredSessionStatus } from './status-utils' |
| 10 | import { JobCoordinator, sessionLockKey, type JobLease } from '../agent-runtime' |
| 11 | |
| 12 | const MAX_ACTIVE_GENERATION_JOBS = 2 |
| 13 | |
| 14 | export type GenerateJobReservation = JobLease |
| 15 | |
| 16 | type BackgroundJob<TContext extends FinalizeContext> = { |
| 17 | sessionId: string |
| 18 | runId: string |
| 19 | kind: SessionJobKind |
| 20 | context: TContext |
| 21 | totalPages: number |
| 22 | status: 'pending' | 'active' | 'settling' |
| 23 | reservedCapacitySlot: boolean |
| 24 | reservation: GenerateJobReservation |
| 25 | execute: (context: TContext) => Promise<void> |
| 26 | pendingCancellation?: Promise<void> |
| 27 | removeAbortListener: () => void |
| 28 | } |
| 29 | |
| 30 | export class GenerateJobManager { |
| 31 | private ctx: GenerationContext |
| 32 | private jobsBySession = new Map<string, BackgroundJob<FinalizeContext>>() |
| 33 | private pendingQueue: Array<BackgroundJob<FinalizeContext>> = [] |
| 34 | private activeCount = 0 |
| 35 | private startingCount = 0 |
| 36 | |
| 37 | private coordinator: JobCoordinator |
| 38 | |
| 39 | constructor(ctx: GenerationContext, coordinator = new JobCoordinator()) { |
| 40 | this.ctx = ctx |
| 41 | this.coordinator = coordinator |
| 42 | } |
| 43 | |
| 44 | async reserve( |
| 45 | operation: string, |
| 46 | sessionId: string, |
| 47 | runId: string |
| 48 | ): Promise< |
| 49 | | { alreadyRunning: true; runId?: string } |
| 50 | | { alreadyRunning: false; reservation: GenerateJobReservation } |
| 51 | > { |
| 52 | const existingJob = this.jobsBySession.get(sessionId) |
| 53 | if (existingJob) { |
| 54 | return { alreadyRunning: true, runId: existingJob.runId } |
| 55 | } |
| 56 | const existingRunState = this.ctx.sessionRuns.sessionRunStates.get(sessionId) |
| 57 | if (existingRunState?.status === 'queued' || existingRunState?.status === 'running') { |
| 58 | return { alreadyRunning: true, runId: existingRunState.runId } |
| 59 | } |
| 60 | const result = await this.coordinator.reserve({ |
| 61 | jobId: runId, |
| 62 | domain: 'generation', |
| 63 | owner: { kind: 'session', id: sessionId }, |
| 64 | claims: { write: [sessionLockKey(sessionId)] }, |
| 65 | wait: 'fail' |
| 66 | }) |
| 67 | if (result.status === 'busy') { |
| 68 | return { alreadyRunning: true, runId: result.conflictingJobId } |
| 69 | } |
| 70 | log.info('[generate:job] reserved', { sessionId, runId, operation }) |
| 71 | return { alreadyRunning: false, reservation: result.lease } |
| 72 | } |
| 73 | |
| 74 | assertNotCancelled(reservation: GenerateJobReservation | null | undefined): void { |
| 75 | if (reservation?.signal.aborted) { |
| 76 | throw new Error('生成已取消') |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | release(reservation: GenerateJobReservation | null | undefined): void { |
| 81 | if (!reservation) return |
| 82 | reservation.release() |
| 83 | } |
| 84 | |
| 85 | async enqueue<TContext extends FinalizeContext>(args: { |
| 86 | reservation: GenerateJobReservation |
| 87 | kind: Extract< |
| 88 | SessionJobKind, |
| 89 | 'standard' | 'template' | 'retry' | 'add-page' | 'single-page-retry' |
| 90 | > |
| 91 | context: TContext |
| 92 | totalPages: number |
| 93 | activityKind?: |
| 94 | | 'page-edit' |
| 95 | | 'edit' |
| 96 | | 'style-switch' |
| 97 | | 'single-page-retry' |
| 98 | | 'addPage' |
| 99 | targetPageId?: string |
| 100 | targetPageNumber?: number |
| 101 | completedPageBaseCount?: number |
| 102 | failedPageBaseKeys?: string[] |
| 103 | execute: (context: TContext) => Promise<void> |
| 104 | }): Promise<{ runId: string; queued: boolean }> { |
| 105 | const { |
| 106 | reservation, |
| 107 | context, |
| 108 | kind, |
| 109 | totalPages, |
| 110 | activityKind, |
| 111 | targetPageId, |
| 112 | targetPageNumber, |
| 113 | completedPageBaseCount, |
| 114 | failedPageBaseKeys, |
| 115 | execute |
| 116 | } = args |
| 117 | const runId = context.runId |
| 118 | if (reservation.jobId !== runId) { |
| 119 | throw new Error(`Generation reservation jobId mismatch: expected ${runId}`) |
| 120 | } |
| 121 | this.assertNotCancelled(reservation) |
| 122 | |
| 123 | const willRunNow = this.activeCount + this.startingCount < MAX_ACTIVE_GENERATION_JOBS |
| 124 | if (willRunNow) { |
| 125 | this.startingCount += 1 |
| 126 | } |
| 127 | let runCreated = false |
| 128 | let jobCreated = false |
| 129 | |
| 130 | try { |
| 131 | await this.ctx.db.createGenerationRunWithSessionJob({ |
| 132 | run: { |
| 133 | id: runId, |
| 134 | sessionId: context.sessionId, |
| 135 | mode: context.effectiveMode, |
| 136 | totalPages, |
| 137 | modelConfigId: context.modelConfigId, |
| 138 | animationPreferences: context.animationPreferences || null, |
| 139 | metadata: { |
| 140 | backgroundJob: true, |
| 141 | kind, |
| 142 | jobKind: kind |
| 143 | } |
| 144 | }, |
| 145 | job: { |
| 146 | id: runId, |
| 147 | sessionId: context.sessionId, |
| 148 | kind, |
| 149 | status: willRunNow ? 'active' : 'pending', |
| 150 | previousSessionStatus: normalizeRestoredSessionStatus(context.previousSessionStatus), |
| 151 | totalPages |
| 152 | } |
| 153 | }) |
| 154 | runCreated = true |
| 155 | jobCreated = true |
| 156 | this.assertNotCancelled(reservation) |
| 157 | |
| 158 | const state = this.ctx.sessionRuns.beginSessionRunState({ |
| 159 | sessionId: context.sessionId, |
| 160 | runId, |
| 161 | mode: context.effectiveMode, |
| 162 | kind, |
| 163 | activityKind, |
| 164 | targetPageId, |
| 165 | targetPageNumber, |
| 166 | totalPages, |
| 167 | previousSessionStatus: context.previousSessionStatus, |
| 168 | status: willRunNow ? 'running' : 'queued', |
| 169 | completedPageBaseCount, |
| 170 | failedPageBaseKeys |
| 171 | }) |
| 172 | this.ctx.runtimeEmitters.emitSessionRunLifecycle(state) |
| 173 | |
| 174 | const job: BackgroundJob<FinalizeContext> = { |
| 175 | sessionId: context.sessionId, |
| 176 | runId, |
| 177 | kind, |
| 178 | context, |
| 179 | totalPages, |
| 180 | status: 'pending', |
| 181 | reservedCapacitySlot: willRunNow, |
| 182 | reservation, |
| 183 | execute: execute as (context: FinalizeContext) => Promise<void>, |
| 184 | removeAbortListener: () => undefined |
| 185 | } |
| 186 | this.jobsBySession.set(context.sessionId, job) |
| 187 | this.watchCancellation(job) |
| 188 | |
| 189 | if (willRunNow) { |
| 190 | this.startJob(job, { reservedSlot: true }) |
| 191 | } else { |
| 192 | this.pendingQueue.push(job) |
| 193 | this.ctx.runtimeEmitters.emitGenerateChunk(context.sessionId, { |
| 194 | type: 'stage_started', |
| 195 | payload: { |
| 196 | runId, |
| 197 | stage: 'queued', |
| 198 | label: '排队中', |
| 199 | progress: 0, |
| 200 | totalPages |
| 201 | } |
| 202 | }) |
| 203 | log.info('[generate:job] queued', { sessionId: context.sessionId, runId, kind }) |
| 204 | } |
| 205 | |
| 206 | return { runId, queued: !willRunNow } |
| 207 | } catch (error) { |
| 208 | if (willRunNow) { |
| 209 | this.startingCount = Math.max(0, this.startingCount - 1) |
| 210 | } |
| 211 | const message = |
| 212 | error instanceof Error ? error.message : String(error || 'Generation job setup failed') |
| 213 | if (jobCreated) { |
| 214 | await this.ctx.db |
| 215 | .updateSessionJobStatus(runId, 'aborted', { |
| 216 | abortReason: isCancellationMessage(message) ? 'cancelled' : 'setup_failed' |
| 217 | }) |
| 218 | .catch((statusError) => { |
| 219 | log.warn('[generate:job] failed to abort partially created job', { |
| 220 | sessionId: context.sessionId, |
| 221 | runId, |
| 222 | message: statusError instanceof Error ? statusError.message : String(statusError) |
| 223 | }) |
| 224 | }) |
| 225 | } |
| 226 | if (runCreated) { |
| 227 | const settled = await Promise.allSettled([ |
| 228 | this.ctx.db.updateGenerationRunStatus(runId, 'failed', message), |
| 229 | this.ctx.db.updateSessionStatus( |
| 230 | context.sessionId, |
| 231 | normalizeRestoredSessionStatus(context.previousSessionStatus) |
| 232 | ) |
| 233 | ]) |
| 234 | settled.forEach((result) => { |
| 235 | if (result.status === 'rejected') { |
| 236 | log.warn('[generate:job] failed to clean up partial job setup', { |
| 237 | sessionId: context.sessionId, |
| 238 | runId, |
| 239 | message: |
| 240 | result.reason instanceof Error ? result.reason.message : String(result.reason) |
| 241 | }) |
| 242 | } |
| 243 | }) |
| 244 | } |
| 245 | this.release(reservation) |
| 246 | throw error |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | async cancel(sessionId: string): Promise<boolean> { |
| 251 | const job = this.jobsBySession.get(sessionId) |
| 252 | if (job?.status === 'settling') return false |
| 253 | const activeJob = this.coordinator.getByOwner({ kind: 'session', id: sessionId }) |
| 254 | const cancelled = activeJob ? this.coordinator.cancel(activeJob.jobId) : false |
| 255 | if (!job) return cancelled |
| 256 | if (job.status === 'pending') { |
| 257 | await this.cancelPendingJob(job) |
| 258 | return cancelled || Boolean(job.pendingCancellation) |
| 259 | } |
| 260 | return true |
| 261 | } |
| 262 | |
| 263 | async abortInterruptedJobs(reason: string): Promise<void> { |
| 264 | const activeJobs = await this.ctx.db.listActiveSessionJobs([ |
| 265 | 'standard', |
| 266 | 'template', |
| 267 | 'retry', |
| 268 | 'add-page', |
| 269 | 'single-page-retry' |
| 270 | ]) |
| 271 | for (const job of activeJobs) { |
| 272 | if (this.jobsBySession.has(job.session_id)) continue |
| 273 | const reservation = this.coordinator.getByOwner({ kind: 'session', id: job.session_id }) |
| 274 | if (reservation?.jobId === job.id) continue |
| 275 | const generationRun = await this.ctx.db.getGenerationRun(job.id) |
| 276 | if (generationRun?.status === 'completed' || generationRun?.status === 'partial') { |
| 277 | await this.ctx.db.updateSessionJobStatus(job.id, 'finished') |
| 278 | continue |
| 279 | } |
| 280 | await this.ctx.db.updateSessionJobStatus(job.id, 'aborted', { abortReason: reason }) |
| 281 | await this.ctx.db.updateGenerationRunStatus(job.id, 'failed', reason) |
| 282 | await this.ctx.db.updateSessionStatus( |
| 283 | job.session_id, |
| 284 | normalizeRestoredSessionStatus(job.previous_session_status) |
| 285 | ) |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | private startJob( |
| 290 | job: BackgroundJob<FinalizeContext>, |
| 291 | options?: { reservedSlot?: boolean } |
| 292 | ): void { |
| 293 | if (this.jobsBySession.get(job.sessionId) !== job || job.reservation.signal.aborted) { |
| 294 | void this.cancelPendingJob(job) |
| 295 | return |
| 296 | } |
| 297 | job.status = 'active' |
| 298 | if (options?.reservedSlot) { |
| 299 | this.startingCount = Math.max(0, this.startingCount - 1) |
| 300 | job.reservedCapacitySlot = false |
| 301 | } |
| 302 | this.activeCount += 1 |
| 303 | void this.activateAndRunJob(job, !options?.reservedSlot) |
| 304 | } |
| 305 | |
| 306 | private async activateAndRunJob( |
| 307 | job: BackgroundJob<FinalizeContext>, |
| 308 | emitStarted: boolean |
| 309 | ): Promise<void> { |
| 310 | try { |
| 311 | await this.ctx.db.updateSessionJobStatus(job.runId, 'active') |
| 312 | } catch (error) { |
| 313 | log.warn('[generate:job] failed to mark active', { |
| 314 | sessionId: job.sessionId, |
| 315 | runId: job.runId, |
| 316 | message: error instanceof Error ? error.message : String(error) |
| 317 | }) |
| 318 | await this.runJob(job, error) |
| 319 | return |
| 320 | } |
| 321 | |
| 322 | const state = this.ctx.sessionRuns.sessionRunStates.get(job.sessionId) |
| 323 | if (state?.runId === job.runId) { |
| 324 | state.status = 'running' |
| 325 | state.updatedAt = Date.now() |
| 326 | } |
| 327 | log.info('[generate:job] start', { |
| 328 | sessionId: job.sessionId, |
| 329 | runId: job.runId, |
| 330 | kind: job.kind |
| 331 | }) |
| 332 | if (emitStarted) { |
| 333 | this.ctx.runtimeEmitters.emitRuntimeJobStarted({ |
| 334 | sessionId: job.sessionId, |
| 335 | jobId: job.runId, |
| 336 | domain: 'generation' |
| 337 | }) |
| 338 | } |
| 339 | await this.runJob(job) |
| 340 | } |
| 341 | |
| 342 | private async runJob(job: BackgroundJob<FinalizeContext>, activationError?: unknown): Promise<void> { |
| 343 | try { |
| 344 | try { |
| 345 | if (activationError) throw activationError |
| 346 | await job.execute(job.context) |
| 347 | this.assertNotCancelled(job.reservation) |
| 348 | // execute() only resolves after generation, history, and session state have committed. |
| 349 | // Keep the lease until its session-job row is durable, but do not let a late cancel |
| 350 | // turn that already committed success into a contradictory cancelled run. |
| 351 | job.status = 'settling' |
| 352 | } catch (error) { |
| 353 | await this.settleFailedJob(job, error) |
| 354 | return |
| 355 | } |
| 356 | |
| 357 | try { |
| 358 | await this.ctx.db.updateSessionJobStatus(job.runId, 'finished') |
| 359 | } catch (error) { |
| 360 | log.error('[generate:job] failed to settle completed session job', { |
| 361 | sessionId: job.sessionId, |
| 362 | runId: job.runId, |
| 363 | message: error instanceof Error ? error.message : String(error || '') |
| 364 | }) |
| 365 | return |
| 366 | } |
| 367 | this.ctx.runtimeEmitters.emitRuntimeJobTerminal({ |
| 368 | sessionId: job.sessionId, |
| 369 | jobId: job.runId, |
| 370 | domain: 'generation', |
| 371 | status: 'completed' |
| 372 | }) |
| 373 | } finally { |
| 374 | job.removeAbortListener() |
| 375 | this.ctx.agentManager.removeSession(job.sessionId) |
| 376 | this.jobsBySession.delete(job.sessionId) |
| 377 | this.release(job.reservation) |
| 378 | this.activeCount = Math.max(0, this.activeCount - 1) |
| 379 | this.processQueue() |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | private async settleFailedJob(job: BackgroundJob<FinalizeContext>, error: unknown): Promise<void> { |
| 384 | const message = error instanceof Error ? error.message : String(error || '') |
| 385 | const cancelled = job.reservation.signal.aborted || isCancellationMessage(message) |
| 386 | let terminalStatePersisted = false |
| 387 | let finalizationFailed = false |
| 388 | try { |
| 389 | await finalizeGenerationFailure( |
| 390 | this.ctx, |
| 391 | job.context, |
| 392 | cancelled ? new Error('生成已取消') : error |
| 393 | ) |
| 394 | terminalStatePersisted = true |
| 395 | } catch (finalizeError) { |
| 396 | finalizationFailed = true |
| 397 | log.error('[generate:job] failed to finalize generation', { |
| 398 | sessionId: job.sessionId, |
| 399 | runId: job.runId, |
| 400 | message: |
| 401 | finalizeError instanceof Error ? finalizeError.message : String(finalizeError || '') |
| 402 | }) |
| 403 | const fallbackResults = await Promise.allSettled([ |
| 404 | this.ctx.db.updateGenerationRunStatus( |
| 405 | job.runId, |
| 406 | 'failed', |
| 407 | message || 'Generation failed' |
| 408 | ), |
| 409 | this.ctx.db.updateSessionStatus( |
| 410 | job.sessionId, |
| 411 | resolveGenerationFailureSessionStatus(job.context, cancelled) |
| 412 | ) |
| 413 | ]) |
| 414 | terminalStatePersisted = fallbackResults.every((result) => result.status === 'fulfilled') |
| 415 | if (!terminalStatePersisted) { |
| 416 | const failure = fallbackResults.find((result) => result.status === 'rejected') |
| 417 | log.error('[generate:job] failed to persist fallback generation terminal state', { |
| 418 | sessionId: job.sessionId, |
| 419 | runId: job.runId, |
| 420 | message: |
| 421 | failure?.status === 'rejected' && failure.reason instanceof Error |
| 422 | ? failure.reason.message |
| 423 | : String(failure?.status === 'rejected' ? failure.reason : '') |
| 424 | }) |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | // Do not mark the session job terminal until the generation run and session state are |
| 429 | // both durable. Otherwise startup recovery will no longer find an orphaned active job. |
| 430 | if (!terminalStatePersisted) return |
| 431 | |
| 432 | // finalizeGenerationFailure publishes this itself on its normal path. Its |
| 433 | // fallback only persists the database state, so close the in-memory run |
| 434 | // before releasing the lease; otherwise reserve() will keep treating the |
| 435 | // session as running for the rest of the process lifetime. |
| 436 | if (finalizationFailed) { |
| 437 | this.ctx.runtimeEmitters.emitGenerateChunk(job.sessionId, { |
| 438 | type: 'run_error', |
| 439 | payload: { |
| 440 | runId: job.runId, |
| 441 | message: cancelled ? '生成已取消' : message || 'Generation failed', |
| 442 | cancelled |
| 443 | } |
| 444 | }) |
| 445 | } |
| 446 | |
| 447 | let jobStatusPersisted = false |
| 448 | try { |
| 449 | if (cancelled) { |
| 450 | await this.ctx.db.updateSessionJobStatus(job.runId, 'aborted', { |
| 451 | abortReason: 'cancelled' |
| 452 | }) |
| 453 | } else { |
| 454 | await this.ctx.db.updateSessionJobStatus(job.runId, 'finished') |
| 455 | } |
| 456 | jobStatusPersisted = true |
| 457 | } catch (statusError) { |
| 458 | log.error('[generate:job] failed to settle session job', { |
| 459 | sessionId: job.sessionId, |
| 460 | runId: job.runId, |
| 461 | message: statusError instanceof Error ? statusError.message : String(statusError || '') |
| 462 | }) |
| 463 | } |
| 464 | |
| 465 | if (jobStatusPersisted) { |
| 466 | this.ctx.runtimeEmitters.emitRuntimeJobTerminal({ |
| 467 | sessionId: job.sessionId, |
| 468 | jobId: job.runId, |
| 469 | domain: 'generation', |
| 470 | status: cancelled ? 'cancelled' : 'failed', |
| 471 | errorCode: cancelled ? undefined : 'generation_failed', |
| 472 | errorMessage: cancelled ? undefined : message |
| 473 | }) |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | private processQueue(): void { |
| 478 | while ( |
| 479 | this.activeCount + this.startingCount < MAX_ACTIVE_GENERATION_JOBS && |
| 480 | this.pendingQueue.length > 0 |
| 481 | ) { |
| 482 | const next = this.pendingQueue.shift() |
| 483 | if (!next || !this.jobsBySession.has(next.sessionId)) continue |
| 484 | if (next.reservation.signal.aborted) { |
| 485 | void this.cancelPendingJob(next) |
| 486 | continue |
| 487 | } |
| 488 | this.startJob(next) |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | private watchCancellation(job: BackgroundJob<FinalizeContext>): void { |
| 493 | const onAbort = (): void => { |
| 494 | if (job.status === 'pending') void this.cancelPendingJob(job) |
| 495 | } |
| 496 | job.removeAbortListener = (): void => job.reservation.signal.removeEventListener('abort', onAbort) |
| 497 | job.reservation.signal.addEventListener('abort', onAbort, { once: true }) |
| 498 | if (job.reservation.signal.aborted) onAbort() |
| 499 | } |
| 500 | |
| 501 | private async cancelPendingJob(job: BackgroundJob<FinalizeContext>): Promise<void> { |
| 502 | if (job.pendingCancellation) return job.pendingCancellation |
| 503 | if (job.status !== 'pending' || this.jobsBySession.get(job.sessionId) !== job) return |
| 504 | |
| 505 | this.pendingQueue = this.pendingQueue.filter((candidate) => candidate !== job) |
| 506 | this.jobsBySession.delete(job.sessionId) |
| 507 | job.removeAbortListener() |
| 508 | if (job.reservedCapacitySlot) { |
| 509 | this.startingCount = Math.max(0, this.startingCount - 1) |
| 510 | job.reservedCapacitySlot = false |
| 511 | } |
| 512 | |
| 513 | job.pendingCancellation = (async () => { |
| 514 | try { |
| 515 | await this.ctx.db.updateSessionJobStatus(job.runId, 'aborted', { abortReason: 'cancelled' }) |
| 516 | await this.ctx.db.updateGenerationRunStatus(job.runId, 'failed', '生成已取消') |
| 517 | await this.ctx.db.updateSessionStatus( |
| 518 | job.sessionId, |
| 519 | normalizeRestoredSessionStatus(job.context.previousSessionStatus) |
| 520 | ) |
| 521 | this.ctx.runtimeEmitters.emitGenerateChunk(job.sessionId, { |
| 522 | type: 'run_error', |
| 523 | payload: { runId: job.runId, message: '生成已取消' } |
| 524 | }) |
| 525 | this.ctx.runtimeEmitters.emitRuntimeJobTerminal({ |
| 526 | sessionId: job.sessionId, |
| 527 | jobId: job.runId, |
| 528 | domain: 'generation', |
| 529 | status: 'cancelled' |
| 530 | }) |
| 531 | } catch (error) { |
| 532 | log.warn('[generate:job] failed to settle cancelled queued job', { |
| 533 | sessionId: job.sessionId, |
| 534 | runId: job.runId, |
| 535 | message: error instanceof Error ? error.message : String(error) |
| 536 | }) |
| 537 | } finally { |
| 538 | this.ctx.agentManager.removeSession(job.sessionId) |
| 539 | this.release(job.reservation) |
| 540 | this.processQueue() |
| 541 | } |
| 542 | })() |
| 543 | return job.pendingCancellation |
| 544 | } |
| 545 | } |
| 546 |