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Published: Mar 22, 2024 License: Apache-2.0, BSD-3-Clause, Apache-2.0 Imports: 17 Imported by: 1



Package echo provides functions to trace the labstack/echo package ( WARNING: The underlying v3 version of labstack/echo has known security vulnerabilities that have been resolved in v4 and is no longer under active development. As such consider this package deprecated. It is highly recommended that you update to the latest version available at labstack/echo.v4.


To start tracing requests, add the trace middleware to your echo router.

r := echo.New()

// Use the tracer middleware with your desired service name.

// Set up an endpoint.
r.GET("/hello", func(c echo.Context) error {
	return c.String(200, "hello world!")

// ...and listen for incoming requests

Example (SpanFromContext)

An example illustrating tracing a child operation within the main context.

// Create a new instance of echo
r := echo.New()

// Use the tracer middleware with your desired service name.

// Set up some endpoints.
r.GET("/image/encode", func(c echo.Context) error {
	// create a child span to track an operation
	span, _ := tracer.StartSpanFromContext(c.Request().Context(), "image.encode")

	// encode an image ...

	// finish the child span

	return c.String(200, "ok!")




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func Middleware

func Middleware(opts ...Option) echo.MiddlewareFunc

Middleware returns echo middleware which will trace incoming requests.


type Option

type Option func(*config)

Option represents an option that can be passed to Middleware.

func NoDebugStack added in v1.36.0

func NoDebugStack() Option

NoDebugStack prevents stack traces from being attached to spans finishing with an error. This is useful in situations where errors are frequent and performance is critical.

func WithAnalytics added in v1.16.0

func WithAnalytics(on bool) Option

WithAnalytics enables Trace Analytics for all started spans.

func WithAnalyticsRate added in v1.16.0

func WithAnalyticsRate(rate float64) Option

WithAnalyticsRate sets the sampling rate for Trace Analytics events correlated to started spans.

func WithHeaderTags added in v1.53.0

func WithHeaderTags(headers []string) Option

WithHeaderTags enables the integration to attach HTTP request headers as span tags. Warning: Using this feature can risk exposing sensitive data such as authorization tokens to Datadog. Special headers can not be sub-selected. E.g., an entire Cookie header would be transmitted, without the ability to choose specific Cookies.

func WithServiceName

func WithServiceName(name string) Option

WithServiceName sets the given service name for the system.

func WithStatusCheck added in v1.45.0

func WithStatusCheck(fn func(statusCode int) bool) Option

WithStatusCheck specifies a function fn which reports whether the passed statusCode should be considered an error.

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