Decouples Prometheus scrape cadence from upstream UniFi API calls so a
429 backoff loop on the controller side no longer stalls /metrics. The
output plugin now owns a 60s background poller (configurable) whose
result is served from an in-memory cache. Concurrent /scrape requests
for the same target are coalesced via singleflight to prevent a noisy
scraper from multiplying upstream load.
Adds two new metrics so operators can detect cache staleness and
refresh failures independently:
- unpoller_prometheus_cache_age_seconds
- unpoller_prometheus_refresh_failures_total
Background goroutine recovers from panics so a malformed input payload
no longer silently kills refreshes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Closes#1001. Mirrors the DataDog plugin's global tags feature for
InfluxDB. Per-metric tags take precedence on key collision so
site/device identifiers can never be overwritten by a misconfigured
global. Configurable via TOML/JSON/YAML under influxdb.tags.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds log_unknown_types config option (default: false) to control logging
of unknown UniFi device types. When disabled (default), unknown devices
are silently ignored to reduce log volume. When enabled, they are logged
as DEBUG messages instead of ERROR. Addresses issue #912.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
