Provides OpenCensus traces support for Sentry.
OpenCensus has tracing instrumentations for a variety of technologies (databases, services, caches, etc...), this library enables those instrumentations for Sentry performance tools with minimal effort.
Also implementing traces with Sentry client directly makes it harder to change the technology in the future, as opposed to vendor-unlocked OpenCensus.
- Replace default tracer with a wrapper:
trace.DefaultTracer = ocsentry.WrapTracer(trace.DefaultTracer). - Use
ocsentry.HTTPHandlerMiddlewareinstead ofgithub.com/getsentry/sentry-go/http.(*Handler).Handleso that originalsentrytracer does not duplicate theochttpjob.
package main
import (
"log"
"net/http"
"time"
"github.com/getsentry/sentry-go"
"github.com/vearutop/ocsentry"
"go.opencensus.io/plugin/ochttp"
"go.opencensus.io/trace"
)
func main() {
// Initialize Sentry.
err := sentry.Init(sentry.ClientOptions{
Dsn: "https://abc123abc123abc123abc123@o123456.ingest.sentry.io/1234567",
ServerName: "my-service",
Release: "v1.2.3",
})
if err != nil {
log.Fatal(err)
}
defer func() {
sentry.Flush(time.Second)
}()
// Setup OC sampling.
trace.ApplyConfig(trace.Config{
DefaultSampler: trace.ProbabilitySampler(0.01),
})
// Enable Sentry wrapper.
trace.DefaultTracer = ocsentry.WrapTracer(trace.DefaultTracer)
var h http.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
_, err := w.Write([]byte("Hello, world!"))
if err != nil {
log.Print(err)
return
}
})
// Apply OpenCensus middleware and Sentry middlewares to your http.Handler.
h = ocsentry.HTTPHandlerMiddleware(h)
h = &ochttp.Handler{Handler: h}
if err := http.ListenAndServe(":80", h); err != nil {
log.Print(err)
return
}
}