clue provides a set of Go packages for instrumenting microservices. The
emphasis is on simplicity and ease of use. Although not a requirement, clue
works best when used in microservices written using
Goa.
clue covers the following topics:
- Logging: the log package provides a context-based logging API that intelligently selects what to log.
- Metrics: the metrics package makes it possible for
services to expose a Prometheus compatible
/metricsHTTP endpoint. - Health checks: the health package provides a simple way for services to expose a health check endpoint.
- Dependency mocks: the mock package provides a way to mock downstream dependencies for testing.
- Tracing: the trace package conforms to the OpenTelemetry specification to trace requests.
The weather example illustrates how to use clue to
instrument a system of Goa microservices. The example comes with a set of
scripts that can be used to compile and start the system as well as a complete
Grafana stack to query metrics and traces. See the
README for more information.
See Contributing