Queue Ops Extension for Glueful

Queue Ops restores production-grade queue operations on top of the framework's lean queue runtime: supervised multi-worker fleets, intelligent autoscaling, and persisted worker/job metrics. The framework core ships a single-worker queue:work; this extension adds the supervisor and autoscaler around it.

It plugs into the framework through the Glueful\Queue\Contracts\WorkerMonitorInterface seam: the core binds a no-op NullWorkerMonitor by default, and this extension overrides it (last-provider-wins) with a persistence-backed WorkerMonitor that records worker lifecycle and job metrics into the queue_workers and queue_job_metrics tables. It then registers the process-supervision tree (ProcessManager, AutoScaler, ScheduledScaler, ResourceMonitor, StreamingMonitor) and the queue:supervise / queue:autoscale commands. Core's queue:work keeps running unchanged whether or not this extension is installed.

• queue:supervise: multi-worker supervision via Symfony Process — spawn, scale, stop, restart, status (with live watch), health checks, plus the leaf-worker IPC loop that spawned workers run
• queue:autoscale: resource-aware autoscaling daemon with load-based scaling, cron-scheduled scaling, resource monitoring, and real-time streaming
• Worker & job metrics persistence: lifecycle, heartbeats, and per-job metrics recorded to queue_workers / queue_job_metrics
• Resource-aware scaling: CPU / memory / disk / load thresholds gate scale-up decisions to prevent resource exhaustion
• Scheduled scaling: cron-like schedules for predictable load windows (dragonmantank/cron-expression)
• Seam-based: binds the core WorkerMonitorInterface, overriding the no-op default; the framework's lean queue:work is unaffected

Install via Composer

composer require glueful/queue-ops

# Rebuild the extensions cache after adding new packages
php glueful extensions:cache

Composer discovers packages of type glueful-extension, but installing does not auto-enable them — the provider must be added to config/extensions.php's enabled allow-list. The CLI does that for you:

# Enable (adds the provider FQCN to config/extensions.php + recompiles the cache)
php glueful extensions:enable queue-ops

# Disable (removes it)
php glueful extensions:disable queue-ops

In production, manage the enabled list in config and run php glueful extensions:cache in your deploy step.

This extension ships migrations (queue_workers, queue_job_metrics). Run them after enabling:

php glueful migrate:run

To develop the extension locally, register it as a Composer path repository in your app's composer.json, then require and enable it:

// composer.json
"repositories": [
    { "type": "path", "url": "extensions/queue-ops", "options": { "symlink": true } }
]

composer require glueful/queue-ops:@dev
php glueful extensions:enable queue-ops
php glueful migrate:run

Entries in config/extensions.php are plain string FQCNs (no ::class) — prefer extensions:enable over editing by hand.

php glueful extensions:list
php glueful extensions:info queue-ops
php glueful extensions:diagnose

Post-install checklist:

• Run migrations (if not auto-run): php glueful migrate:run
• Rebuild cache after Composer operations: php glueful extensions:cache
• Confirm the seam is bound: resolving Glueful\Queue\Contracts\WorkerMonitorInterface yields Glueful\Extensions\QueueOps\Monitoring\WorkerMonitor

Configuration is loaded from the extension's config/queue_ops.php and merged under the queue_ops key by the service provider. The keys below moved out of core config/queue.php (the queue.workers.* tree) when the ops surface became this extension; the feeding env vars are unchanged.

# Process management (Symfony Process)
QUEUE_PROCESS_ENABLED=true
QUEUE_DEFAULT_WORKERS=2
QUEUE_MAX_WORKERS_GLOBAL=50
QUEUE_MAX_WORKERS=10
QUEUE_RESTART_DELAY=5
QUEUE_HEALTH_CHECK_INTERVAL=30
QUEUE_WORKER_TIMEOUT=300
QUEUE_GRACEFUL_SHUTDOWN_TIMEOUT=30
QUEUE_HEARTBEAT_INTERVAL=15
QUEUE_MAX_RESTARTS_PER_HOUR=10

# Auto-scaling
QUEUE_AUTO_SCALING=false
QUEUE_SCALE_CHECK_INTERVAL=60
QUEUE_SCALE_UP_THRESHOLD=100
QUEUE_SCALE_DOWN_THRESHOLD=10
QUEUE_SCALE_UP_STEP=2
QUEUE_SCALE_DOWN_STEP=1
QUEUE_SCALE_COOLDOWN=300

# Resource limits & thresholds
QUEUE_WORKER_MEMORY_LIMIT=512M
QUEUE_WORKER_TIME_LIMIT=3600
QUEUE_JOB_TIMEOUT=300
QUEUE_MAX_JOBS_PER_WORKER=1000
QUEUE_MEMORY_WARNING=75
QUEUE_MEMORY_CRITICAL=90
QUEUE_CPU_WARNING=70
QUEUE_CPU_CRITICAL=90
QUEUE_LOAD_WARNING=2.0
QUEUE_LOAD_CRITICAL=4.0

# Legacy supervisor (prefer process management)
QUEUE_SUPERVISOR_ENABLED=false
QUEUE_SUPERVISOR_CONFIG=/etc/supervisor/conf.d/

The config exposes these blocks: process, auto_scaling, queues (per-queue workers / max_workers / auto_scale), resource_limits, resource_thresholds, and supervisor. Per-queue worker counts are set with env vars such as CRITICAL_QUEUE_WORKERS / CRITICAL_QUEUE_MAX_WORKERS / CRITICAL_QUEUE_AUTO_SCALE (and the equivalent DEFAULT_*, HIGH_*, EMAIL_*, REPORTS_*, NOTIFICATIONS_*, MAINTENANCE_* sets).

The per-queue kept keys — priority / memory_limit / timeout / max_jobs — remain in core config/queue.workers.queues.<name> and are read by the core worker; this extension merges them with its own per-queue keys at runtime.

Core keeps a lean single-worker runner regardless of this extension:

php glueful queue:work            # core, single worker — always available

# Start the default fleet (2 workers per queue, then monitor)
php glueful queue:supervise

# Actions: work | process | spawn | scale | status | stop | restart | health
php glueful queue:supervise spawn   --queue=high --count=3
php glueful queue:supervise scale   --queue=default --count=5
php glueful queue:supervise status  --watch=2          # live-refresh, or --json
php glueful queue:supervise health
php glueful queue:supervise stop    --all              # or --worker-id=ID
php glueful queue:supervise restart --all              # or --worker-id=ID

The process action is the leaf-worker IPC loop spawned workers run; it emits [HEARTBEAT] / [JOB_COMPLETED] / [METRICS] lines the supervisor parses (use --with-monitoring / --emit-heartbeat).

# Run the autoscaling daemon (load + schedule + resource aware)
php glueful queue:autoscale                 # = run
php glueful queue:autoscale run --interval=30 --streaming
php glueful queue:autoscale run --no-resource-checks --no-scheduling

# Actions: run | status | config | schedule | resources | stream
php glueful queue:autoscale status   --detailed         # or --json
php glueful queue:autoscale config   --show             # --validate | --reload
php glueful queue:autoscale schedule --list             # or --preview --days=7
php glueful queue:autoscale resources --current         # --history | --trends
php glueful queue:autoscale stream   --format=table     # --filter=, --export=

• PHP 8.3 or higher
• Glueful 1.52.0 or higher
• ext-pcntl recommended (graceful signal handling for daemons/leaf workers)
• symfony/process and dragonmantank/cron-expression (provided by the framework)

MIT — licensed consistently with the Glueful framework.

For issues, feature requests, or questions, please create an issue in the repository.