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Harden runtime budgets: DB pool, CLI concurrency, timeouts, and metrics.

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Add shared CLI budget/timeout with force-close, parallel port-traffic dispatch, unified shutdown, bounded audit queue, output/log caps, and /metrics probes.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
oliver 2026-08-02 18:02:43 +08:00
parent 2068ce3d04
commit d56020d84c
23 changed files with 824 additions and 102 deletions
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18
netx_api/config.py
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@ -143,6 +143,24 @@ class Settings(BaseSettings):
# When true (default), API also runs config_sync / lldp / port_traffic schedulers.
# Production split: set false and run `python -m netx_api.worker` beside the API.
run_inline_schedulers: bool = True
# SQLAlchemy QueuePool (API + background workers share one engine).
# Rule of thumb: pool_size + max_overflow >= HTTP peak + cli_max_concurrent + UME WS burst.
db_pool_size: int = 20
db_max_overflow: int = 20
db_pool_recycle_sec: int = 1800
db_pool_timeout_sec: int = 30
# Global Netmiko/SSH concurrency across discover / collect / config_sync / port_traffic.
cli_max_concurrent: int = 20
# Shared timeout watchdog pool (not per-task executors).
cli_timeout_pool_workers: int = 16
# Port-traffic: how many devices may collect in parallel on the scheduler tick.
port_traffic_dispatch_workers: int = 4
# Bound async audit queue; drop oldest when full to protect RSS.
audit_queue_max: int = 5000
# Cap NE collection output files (bytes); 0 = unlimited (not recommended).
ne_collect_max_output_bytes: int = 8 * 1024 * 1024
# WebCRT session transcript rotate size (bytes); 0 disables rotate.
webcrt_session_log_max_bytes: int = 4 * 1024 * 1024
settings = Settings()