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).
32 lines
895 B
YAML
32 lines
895 B
YAML
server:
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port: 8080
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spring:
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application:
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name: order-service
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management:
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endpoints:
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web:
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exposure:
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include: health
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metrics:
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tags:
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application: ${spring.application.name}
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# No management.otlp.* export properties here on purpose -- see docs/03-otel-env-vars.md.
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# In development, Boot's Docker Compose support (see compose.yaml) auto-configures the OTLP
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# export endpoints for metrics, traces and logs the moment it detects the grafana/otel-lgtm
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# image, without a single management.otlp.* property in this file.
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# management.tracing.sampling.probability defaults to 0.10 -- see docs/output/02-low-sampling-demo.txt
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# for what that does to a short burst of local traffic, and the "fulltrace" profile below for the fix.
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---
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spring:
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config:
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activate:
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on-profile: fulltrace
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management:
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tracing:
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sampling:
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probability: 1.0
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