feat(go): add custom metrics example with OTel SDK#196
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prathamesh-sonpatki wants to merge 4 commits into
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feat(go): add custom metrics example with OTel SDK#196prathamesh-sonpatki wants to merge 4 commits into
prathamesh-sonpatki wants to merge 4 commits into
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Send Gemini CLI telemetry — traces, metrics, and logs — to Last9 via OpenTelemetry. Two paths documented: - Direct: GEMINI_TELEMETRY_* env vars set endpoint; standard OTEL_EXPORTER_OTLP_HEADERS provides auth (picked up by underlying OpenTelemetry JS SDK even though gemini-cli does not pass headers explicitly to its OTLP exporters). - Local OTel Collector: useful for batching or fan-out. Traces are opt-in via GEMINI_TELEMETRY_TRACES_ENABLED=true. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Demonstrates dual-pipeline filterprocessor approach for handling delta and cumulative OTLP metrics across multi-replica collectors: - nginx round-robin simulates K8s Service load-balancing - filter/keep_delta + setshardkey + deltatocumulative per-pod isolation - filter/keep_cumulative passthrough (SDK owns the counter) - metrics/delta_broken pipeline shows undercount without setshardkey - verify.sh queries local VictoriaMetrics for series count sanity check Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…usions - Replace split mounts with single /:hostfs:ro,rslave to prevent ENOENT errors when hostmetrics prepends /hostfs to /proc/mounts paths - Add exclude_fs_types for squashfs/snap/tmpfs/overlay to eliminate snap loopback noise without per-revision exclusion rules - Fix exclude_mount_points patterns to match new single-mount layout - Bump image to otel/opentelemetry-collector-contrib:0.144.0 - Update process: scraper comment to document TOCTOU limitation - Add comment on when to use network_mode: host for prometheus scraping Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Demonstrates counter, histogram, and gauge using raw OTel Go SDK with OTLP HTTP export. Includes guard against empty string attribute values which are silently dropped per the Prometheus data model. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
go/custom-metrics/example demonstrating raw OTel Go SDK usageWhat's included
main.go— MeterProvider setup + counter/histogram/gauge recording loopgo.mod/go.sum— dependencies pinned to OTel v1.33.0.gitignore— excludes compiled binariesTest plan
go mod tidy && go build ./...passesOTEL_EXPORTER_OTLP_ENDPOINTandOTEL_EXPORTER_OTLP_HEADERSset — metrics appear in Last9 with correct labels🤖 Generated with Claude Code