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swarm-builder: export build counts, durations, queue wait and publish failures through the host's collector

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The builder pushes its build metrics (builds by kind and outcome, build
duration, queue depth and wait, reply publish failures) to its forwarder's
OTLP receiver, which relays them to the swarm collector.

It also registers the standard store client-certificate gauges
(bao.client_cert.*, cert=builder) on the same exporter. They are the
builder's liveness signal: exported every minute whether or not a build
runs. The cert-metrics table in docs/scheduler/observability.md gains the
builder row.
This commit is contained in:
atlas 2026-11-04 23:13:53 +01:00 • committed by mara
commit e30f5849d5
1 changed files with 740 additions and 32 deletions
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8
swarm-builder/Cargo.toml
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@ -14,10 +14,14 @@ async-nats.workspace = true
# StreamExt::next on the subscription.
futures-util.workspace = true
hive-log.workspace = true
# The build metrics, exported over OTLP like the review classifier's.
opentelemetry.workspace = true
opentelemetry-otlp.workspace = true
opentelemetry_sdk.workspace = true
serde_json.workspace = true
swarm-queue-client.workspace = true
# The forge token and queue client secret paths, and the store login.
swarm-secret-client.workspace = true
swarm-secret-client = { workspace = true, features = ["otel"] }
# The build subject and the shapes the controller sends and reads back.
swarm-wire.workspace = true
tokio.workspace = true
@ -27,6 +31,8 @@ tracing.workspace = true
# out the build slot's wait limit on paused time.
[dev-dependencies]
mockall.workspace = true
# `testing`: the in-memory exporter the metric tests read.
opentelemetry_sdk = { workspace = true, features = ["testing"] }
tokio = { workspace = true, features = ["test-util"] }
tracing-subscriber.workspace = true