Documentation
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Overview ¶
Package metricslog is the Prometheus observer on the lifecycle spine. It owns no metrics of its own — it reads the per-request lifecycle Context + outcome in the post-flight phase and forwards them to the one-liner emitters in pkg/metrics. Registering it is the entire wiring for the request-flow metrics (Q1–Q3 in docs/metrics.md); no runner (pipeline/proxy/ws/batch) changes, because every runner already feeds the lifecycle spine.
Out of scope: the data-loss and provider-key-health metrics (Q3/Q4) are emitted at their sources (the emitters, keypool) — they don't pass through here.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type Hook ¶
type Hook struct{}
Hook reads request outcome + timing and emits the request-flow metrics. It is a pure lifecycle.Hook: it produces no stored result (returns nil) and never mutates the Context. Emitting a Prometheus sample is a cheap, non-blocking atomic op, so it satisfies the "Fill must be cheap" rule.
Source Files