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feat: Add OTEL based observability to the Go Feature Server #5685

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Merged
shuchu merged 7 commits into from
Oct 24, 2025
Merged

feat: Add OTEL based observability to the Go Feature Server #5685

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b0cd3bb
feat: Add OTEL based observability to Go feature server.
shuchu Oct 16, 2025
df6fcc3
fix: Fix the traces export issue.
shuchu Oct 21, 2025
82c5d26
fix: Remove the unnecessary coded exporter URL.
shuchu Oct 22, 2025
9973374
Merge branch 'feast-dev:master' into feat/issue-4821a
shuchu Oct 22, 2025
fc4107a
fix: Fix typos in README.
shuchu Oct 22, 2025
2075335
fix: Improve the code by following the Copilot AI's suggestions.
shuchu Oct 22, 2025
f8ae342
Merge branch 'master' into feat/issue-4821a
shuchu Oct 24, 2025
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fix: Remove the unnecessary coded exporter URL. 
Signed-off-by: Shuchu Han <shuchu.han@gmail.com>
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@shuchu
shuchu committed Oct 22, 2025
commit 82c5d2693bb79f631aededeb064dd7305985288c
4 changes: 4 additions & 0 deletions go/README.md
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Expand Up @@ -15,6 +15,10 @@ To build and run the Go Feature Server locally, create a feature_store.yaml file
## OTEL based observability
The OS level env variable `ENABLE_OTEL_TRACING=="true"/"false"` (string type) is used to enable/disable this service (with Tracing only).

The default export URL is "http://localhost:4318". The default schema of sending data to collector is **HTTP**. Please refer the following two docs about the configuration of the OTEL exporter:
1. https://opentelemetry.io/docs/languages/sdk-configuration/otlp-exporter/
2. https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp#WithEndpoint

## List of files have OTEL observability code
1. internal/feast/transformation/transformation.go

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1 change: 0 additions & 1 deletion go/main.go
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Expand Up @@ -215,7 +215,6 @@ func OTELTracingEnabled() bool {

func newExporter(ctx context.Context) (*otlptrace.Exporter, error) {
exp, err := otlptracehttp.New(ctx,
otlptracehttp.WithEndpoint("localhost:4318"),
otlptracehttp.WithInsecure())
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if err != nil {
return nil, err
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