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59557e62d7
Per-provider liveness with circuit-breaker semantics. The router (M3)
will read `is_healthy()` to skip dead providers in a chain; the probe
loop and the call-site fallback handler write state via
`mark_healthy` / `mark_unhealthy`.
State machine: 1st failure stays healthy (transient blips happen);
2nd consecutive failure trips the breaker and sets a 60s backoff
window during which `is_healthy → False`. After the window the
provider is half-open again — next call exercises it, success
resets, failure re-arms.
HealthProbe is the background asyncio.Task that pings every
registered provider every 30s with a 3s timeout. Probes run
concurrently per tick and one bad probe can't sink the loop. Probe
functions are injected (`{name: async-fn}`) so this module stays
decoupled from the provider classes — the wiring lives in main.py
where we already know which providers are configured.
32 new tests (FakeClock for deterministic backoff timing, slow-probe
helpers for parallelism + timeout, lifecycle tests for start/stop
idempotency and tick-after-error survival). 64/64 alias+health tests
green.
Not yet wired into the request path — that's M3.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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| .. | ||
| mana-ai | ||
| mana-analytics | ||
| mana-api-gateway | ||
| mana-auth | ||
| mana-crawler | ||
| mana-credits | ||
| mana-events | ||
| mana-geocoding | ||
| mana-image-gen | ||
| mana-landing-builder | ||
| mana-llm | ||
| mana-mail | ||
| mana-mcp | ||
| mana-media | ||
| mana-notify | ||
| mana-persona-runner | ||
| mana-research | ||
| mana-search | ||
| mana-stt | ||
| mana-subscriptions | ||
| mana-sync | ||
| mana-tts | ||
| mana-user | ||
| mana-video-gen | ||
| mana-voice-bot | ||
| news-ingester | ||