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package errortracker
import (
"fmt"
"net/http"
"os"
"runtime/debug"
"gitlab.com/gitlab-org/labkit/errortracking"
"gitlab.com/gitlab-org/labkit/log"
)
// NewHandler allows us to handle panics in upstreams gracefully, by logging them
// using structured logging and reporting them into Sentry as `error`s with a
// proper correlation ID attached.
func NewHandler(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
defer func() {
if p := recover(); p != nil {
fields := log.ContextFields(r.Context())
log.WithFields(fields).Error(p)
debug.PrintStack()
// A panic isn't always an `error`, so we may have to convert it into one.
e, ok := p.(error)
if !ok {
e = fmt.Errorf("%v", p)
}
TrackFailedRequest(r, e, fields)
}
}()
next.ServeHTTP(w, r)
})
}
func TrackFailedRequest(r *http.Request, err error, fields log.Fields) {
captureOpts := []errortracking.CaptureOption{
errortracking.WithContext(r.Context()),
errortracking.WithRequest(r),
}
for k, v := range fields {
captureOpts = append(captureOpts, errortracking.WithField(k, fmt.Sprintf("%v", v)))
}
errortracking.Capture(err, captureOpts...)
}
func Initialize(version string) error {
// Use a custom environment variable (not SENTRY_DSN) to prevent
// clashes with gitlab-rails.
sentryDSN := os.Getenv("GITLAB_WORKHORSE_SENTRY_DSN")
sentryEnvironment := os.Getenv("GITLAB_WORKHORSE_SENTRY_ENVIRONMENT")
return errortracking.Initialize(
errortracking.WithSentryDSN(sentryDSN),
errortracking.WithSentryEnvironment(sentryEnvironment),
errortracking.WithVersion(version),
)
}
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