feat: Minions — BullMQ-inspired Postgres-native job queue#130
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feat: Minions — BullMQ-inspired Postgres-native job queue#130
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…gine Foundation for the Minions job queue system. Adds: - minion_jobs table (20 columns) with CHECK constraints, partial indexes, and RLS. Inspired by BullMQ's job model, adapted for Postgres. - Migration v5 creates the table for existing databases. - executeRaw<T>() method on BrainEngine interface for raw SQL access, needed by the Minions module for claim queries (FOR UPDATE SKIP LOCKED), token-fenced writes, and atomic stall detection. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
BullMQ-inspired Postgres-native job queue built into GBrain. No Redis. No external dependencies. Postgres transactions replace Lua scripts. - MinionQueue: submit, claim (FOR UPDATE SKIP LOCKED), complete/fail (token-fenced), atomic stall detection (CTE), delayed promotion, parent-child resolution, prune, stats - MinionWorker: handler registry, lock renewal, graceful SIGTERM, exponential backoff with jitter, UnrecoverableError bypass - MinionJobContext: updateProgress(), log(), isActive() for handlers - 8-state machine: waiting/active/completed/failed/delayed/dead/ cancelled/waiting-children Patterns stolen from: BullMQ (lock tokens, stall detection, flows), Sidekiq (dead set, backoff formula), Inngest (checkpoint/resume). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Full coverage of the Minions module against PGLite in-memory: - Queue CRUD (9): submit, get, list, remove, cancel, retry, duplicate - State machine (6): waiting→active→completed/failed, retry→delayed→waiting - Backoff (4): exponential, fixed, jitter range, attempts_made=0 edge - Stall detection (3): detect stalled, counter increment, max→dead - Dependencies (5): parent waits, fail_parent, continue, remove_dep, orphan - Worker lifecycle (5): register, start-without-handlers, claim+execute, non-Error throws, UnrecoverableError bypass - Lock management (3): renewal, token mismatch, claim sets lock fields - Claim mechanics (4): empty queue, priority ordering, name filtering, delayed promotion timing - Cancel & retry (2): cancel active, retry dead Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Wire Minions into the GBrain CLI and MCP layer: CLI (gbrain jobs): submit <name> [--params JSON] [--follow] [--dry-run] list [--status S] [--queue Q] [--limit N] get <id> — detailed view with attempt history cancel/retry/delete <id> prune [--older-than 30d] stats — job health dashboard work [--queue Q] [--concurrency N] — Postgres-only worker daemon 6 MCP operations (contract-first, auto-exposed via MCP server): submit_job, get_job, list_jobs, cancel_job, retry_job, get_job_progress Built-in handlers: sync, embed, lint, import. --follow runs inline. Worker daemon blocked on PGLite (exclusive file lock). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
CLAUDE.md: added Minions files to key files, updated operation count (36), BrainEngine method count (38), test file count (45), added jobs CLI commands. CHANGELOG.md: added Minions entry to v0.10.0 (background jobs, retry, stall detection, worker daemon). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
…x, tokens, replay)
Adds the foundation for Minions as universal agent orchestration infrastructure.
GBrain's Postgres-native job queue now supports durable, observable, steerable
background agents. The OpenClaw plugin (separate repo) will consume these via
library import, not MCP, for zero-latency local integration.
## New capabilities
- **Concurrent worker** — Promise pool replaces sequential loop. Per-job
AbortController for cooperative cancellation. Graceful shutdown waits for
all in-flight jobs via Promise.allSettled.
- **Pause/resume** — pauseJob clears the lock and fires AbortSignal on active
jobs. Handlers check ctx.signal.aborted and exit cleanly. resumeJob returns
paused jobs to waiting. Catch block skips failJob when signal.aborted.
- **Inbox (separate table)** — minion_inbox table for sidechannel messages.
sendMessage with sender validation (parent job or admin). readInbox is
token-fenced and marks read_at atomically. Separate table avoids row bloat
from rewriting JSONB on every send.
- **Token accounting** — tokens_input/tokens_output/tokens_cache_read columns.
updateTokens accumulates; completeJob rolls child tokens up to parent.
USD cost computed at read time (no cost_usd column — pricing too volatile).
- **Job replay** — replayJob clones a terminal job with optional data overrides.
New job, fresh attempts, no parent link.
## Handler contract additions
MinionJobContext now provides:
- `signal: AbortSignal` — cooperative cancellation
- `updateTokens(tokens)` — accumulate token usage
- `readInbox()` — check for sidechannel messages
- `log()` — now accepts string or TranscriptEntry
## MCP operations added
pause_job, resume_job, replay_job, send_job_message — all auto-generate CLI
commands and MCP server endpoints.
## Library exports
package.json exports map adds ./minions and ./engine-factory paths so plugins
can `import { MinionQueue } from 'gbrain/minions'` for direct library use.
## Instruction layer (the teaching)
- skills/minion-orchestrator/SKILL.md — when/how to use Minions, decision
matrix, lifecycle management, anti-patterns
- skills/conventions/subagent-routing.md — cross-cutting rule: all background
work goes through Minions
- RESOLVER.md — trigger entries for agent orchestration
- manifest.json — registered
## Schema migration v6
Additive: 3 token columns, paused status, minion_inbox table with unread index.
Full Postgres + PGLite support. No backfill needed.
## Tests
65 tests (was 43): pause/resume (5), inbox (6), tokens (4), replay (4),
concurrent worker context (3), plus all existing coverage.
## What's NOT in this commit
Deferred to follow-up PRs:
- LISTEN/NOTIFY subscribe (needs real Postgres E2E)
- Resource governor (depends on concurrent worker stress testing)
- Routing eval harness (needs API keys + benchmark data)
- OpenClaw plugin (separate @gbrain/openclaw-minions-plugin repo)
See docs/designs/MINIONS_AGENT_ORCHESTRATION.md for full CEO-approved design.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Minions is a durable job queue built directly into GBrain. No Redis. No external dependencies. Postgres transactions replace BullMQ's Lua scripts while maintaining the same correctness guarantees.
Why: sync/embed/enrich/lint run synchronously today, exit after one cycle, and can't handle 14K+ page bulk operations. Minions makes them durable background jobs with automatic retry, stall detection, and progress tracking.
What shipped (5 commits):
minion_jobstable (20 columns) with CHECK constraints, 5 partial indexes, RLS.executeRaw<T>()added to BrainEngine interface.gbrain jobs submit/list/get/cancel/retry/prune/stats/workwith--follow(inline execution),--dry-run,--params.Patterns stolen from:
PGLite: Inline execution only (
--follow). Worker daemon is Postgres-only (PGLite exclusive file lock blocks concurrent processes).Test Coverage
Pre-Landing Review
All reviews cleared:
TODOS
No TODO items completed in this PR. No new TODOs created.
Test plan
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