pranay01/signoz-openfeature-example

This example shows how to instrument your JS code with openfeature and monitor it via SigNoz

ReadMe

This example shows instrumenting a nodejs application with OpenFeature and using Launchdarkly as the feature flag backend provider. Then using SigNoz to visualise the openfeature flags in span events

In bash: export OTEL_SERVICE_NAME="openfeature-example"

Run this using OTEL_EXPORTER_OTLP_HEADERS="signoz-access-token=<SIGNOZ_INGESTION_KEY>" node --require ./tracing.cjs app.js

Status

• Enable Feature flag using OpenFeature
• Set up a feature flag backend system (setup LaunchDarkly)
• Check the traces are being seen in SigNoz Cloud
• check how to add flag evaluation results via Opentelemetry Hooks
• Visualising feature flags in SigNoz trace detail page, events section

Current Issues

• SigNoz doesn't allow filtering based on span events in query builder currently.
• Openfeature sem conv only pass flag_variant and not flag_value

Resources

• Specs fro Opentelemetry Hooks - open-feature/.github#16
• NodeJS package for adding Otel Hooks - https://www.npmjs.com/package/@openfeature/open-telemetry-hooks

Demo Video

Screenshot