Claude
03bdf7ee87
Companion module for the rewritten ankurm.com Prometheus/Grafana monitoring post. Verified against a real running grafana/otel-lgtm container (not mocked): 8 real requests produce a real orders_placed_total metric queried back from the bundled Prometheus-compatible API with zero management.otlp.* properties, auto-wired entirely by Boot's Docker Compose service-connection detection. Two real findings surfaced along the way and documented rather than smoothed over: @Observed silently produces no span without an explicit ObservedAspect bean (AspectJ weaving alone is not sufficient, despite Micrometer Tracing being active), and OTEL_EXPORTER_OTLP_ENDPOINT already worked on Boot 4.0 via Micrometer's own OtlpConfig fallback -- what's actually new in 4.1 is the rest of the standard OTEL_* surface (verified with OTEL_METRIC_EXPORT_INTERVAL against identical source compiled on both Boot 4.0.8 and 4.1.1). Also fixes the root README's module table, which was missing a row for resilience4j-circuit-breaker (added in a previous commit but never indexed here).
30 lines
979 B
Plaintext
30 lines
979 B
Plaintext
8 real requests sent to the running app:
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$ for i in $(seq 1 8); do curl -s -X POST "http://localhost:8080/orders/$i"; done
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Queried straight from the real Prometheus-compatible API bundled inside the grafana/otel-lgtm
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container -- not the app's own /actuator endpoint, not a mock:
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$ curl -s "http://localhost:9090/api/v1/query?query=orders_placed_total"
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{
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"status": "success",
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"data": {
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"resultType": "vector",
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"result": [
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{
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"metric": {
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"__name__": "orders_placed_total",
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"application": "order-service",
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"channel": "web",
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"job": "order-service",
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"service_name": "order-service"
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},
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"value": [1789722945.151, "8"]
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}
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]
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}
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}
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Every one of the 8 POSTs landed as a real OTLP metric, pushed over the network, through the
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Docker Compose auto-wired endpoint, and queried back out of the real Prometheus-compatible
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backend Grafana LGTM bundles.
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