Martini

go get github.com/getsentry/sentry-go/martini

import (
	"fmt"

	"github.com/getsentry/sentry-go"
	sentrymartini "github.com/getsentry/sentry-go/martini"
	"github.com/go-martini/martini"
)

// To initialize Sentry's handler, you need to initialize Sentry itself beforehand
if err := sentry.Init(sentry.ClientOptions{
	Dsn: "https://examplePublicKey@o0.ingest.sentry.io/0",
}); err != nil {
	fmt.Printf("Sentry initialization failed: %v\n", err)
}

// Then create your app
app := martini.Classic()

// Once it's done, you can attach the handler as one of your middleware
app.Use(sentrymartini.New(sentrymartini.Options{}))

// Set up routes
app.Get("/", func() string {
	return "Hello world!"
})

// And run it
app.Run()

// Whether Sentry should repanic after recovery, in most cases it should be set to true,
// as martini.Classic includes its own Recovery middleware that handles http responses.
Repanic bool
// Whether you want to block the request before moving forward with the response.
// Because Martini's default `Recovery` handler doesn't restart the application,
// it's safe to either skip this option or set it to `false`.
WaitForDelivery bool
// Timeout for the event delivery requests.
Timeout time.Duration

app := martini.Classic()

app.Use(sentrymartini.New(sentrymartini.Options{
	Repanic: true,
}))

app.Use(func(rw http.ResponseWriter, r *http.Request, c martini.Context, hub *sentry.Hub) {
	hub.Scope().SetTag("someRandomTag", "maybeYouNeedIt")
})

app.Get("/", func(rw http.ResponseWriter, r *http.Request, hub *sentry.Hub) {
	if someCondition {
		hub.WithScope(func (scope *sentry.Scope) {
			scope.SetExtra("unwantedQuery", rw.URL.RawQuery)
			hub.CaptureMessage("User provided unwanted query string, but we recovered just fine")
		})
	}
	rw.WriteHeader(http.StatusOK)
})

app.Get("/foo", func() string {
	// sentrymartini handler will catch it just fine. Also, because we attached "someRandomTag"
	// in the middleware before, it will be sent through as well
	panic("y tho")
})

app.Run()

sentry.Init(sentry.ClientOptions{
	Dsn: "https://examplePublicKey@o0.ingest.sentry.io/0",
	BeforeSend: func(event *sentry.Event, hint *sentry.EventHint) *sentry.Event {
		if hint.Context != nil {
			if req, ok := hint.Context.Value(sentry.RequestContextKey).(*http.Request); ok {
				// You have access to the original Request here
			}
		}

		return event
	},
})