sentrygin

README

Official Sentry Gin Handler for Sentry-go SDK

go.dev: https://pkg.go.dev/github.com/getsentry/sentry-go/gin

Example: https://github.com/getsentry/sentry-go/tree/master/_examples/gin

Installation

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

import (
    "fmt"
    "net/http"

    "github.com/getsentry/sentry-go"
    sentrygin "github.com/getsentry/sentry-go/gin"
    "github.com/gin-gonic/gin"
)

// To initialize Sentry's handler, you need to initialize Sentry itself beforehand
if err := sentry.Init(sentry.ClientOptions{
    Dsn: "your-public-dsn",
}); err != nil {
    fmt.Printf("Sentry initialization failed: %v\n", err)
}

// Then create your app
app := gin.Default()

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

// Set up routes
app.GET("/", func(ctx gin.Context) {
    ctx.String(http.StatusOK, "Hello world!")
})

// And run it
app.Run(":3000")

Configuration

sentrygin accepts a struct of Options that allows you to configure how the handler will behave.

Currently it respects 3 options:

// Whether Sentry should repanic after recovery, in most cases it should be set to true,
// as gin.Default 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 Gin'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

Usage

sentrygin attaches an instance of *sentry.Hub (https://pkg.go.dev/github.com/getsentry/sentry-go#Hub) to the *gin.Context, which makes it available throughout the rest of the request's lifetime. You can access it by using the sentrygin.GetHubFromContext() method on the context itself in any of your proceeding middleware and routes. And it should be used instead of the global sentry.CaptureMessage, sentry.CaptureException, or any other calls, as it keeps the separation of data between the requests.

Keep in mind that *sentry.Hub won't be available in middleware attached before to sentrygin!

app := gin.Default()

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

app.Use(func(ctx *gin.Context) {
    if hub := sentrygin.GetHubFromContext(ctx); hub != nil {
        hub.Scope().SetTag("someRandomTag", "maybeYouNeedIt")
    }
    ctx.Next()
})

app.GET("/", func(ctx *gin.Context) {
    if hub := sentrygin.GetHubFromContext(ctx); hub != nil {
        hub.WithScope(func(scope *sentry.Scope) {
            scope.SetExtra("unwantedQuery", "someQueryDataMaybe")
            hub.CaptureMessage("User provided unwanted query string, but we recovered just fine")
        })
    }
    ctx.Status(http.StatusOK)
})

app.GET("/foo", func(ctx *gin.Context) {
    // sentrygin 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(":3000")

Accessing Request in BeforeSend callback

sentry.Init(sentry.ClientOptions{
    Dsn: "your-public-dsn",
    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
    },
})

Documentation

Index

• func GetHubFromContext(ctx *gin.Context) *sentry.Hub
• func GetSpanFromContext(ctx *gin.Context) *sentry.Span
• func New(options Options) gin.HandlerFunc
• func SetHubOnContext(ctx *gin.Context, hub *sentry.Hub)
• type Options

Functions

func GetHubFromContext

func GetHubFromContext(ctx *gin.Context) *sentry.Hub

GetHubFromContext retrieves attached *sentry.Hub instance from gin.Context.

func GetSpanFromContext

func GetSpanFromContext(ctx *gin.Context) *sentry.Span

GetSpanFromContext retrieves attached *sentry.Span instance from gin.Context. If there is no transaction on echo.Context, it will return nil.

func New

func New(options Options) gin.HandlerFunc

New returns a function that satisfies gin.HandlerFunc interface It can be used with Use() methods.

func SetHubOnContext

func SetHubOnContext(ctx *gin.Context, hub *sentry.Hub)

SetHubOnContext sets *sentry.Hub instance to gin.Context.

Types

type Options

type Options struct {
	// Repanic configures whether Sentry should repanic after recovery, in most cases it should be set to true,
	// as gin.Default includes it's own Recovery middleware what handles http responses.
	Repanic bool
	// WaitForDelivery configures whether you want to block the request before moving forward with the response.
	// Because Gin'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
}