middleware

Documentation

Index

• Constants
• func MetricsMiddleware(next http.Handler) http.Handler
• func RequestIDMiddleware(next http.Handler) http.Handler

Constants

const (
	// RequestIDHeader is a constant containing the request header key
	RequestIDHeader = "X-Request-ID"

	// RequestCtxKey is a context containing the context key under which the
	// request ID is stored.
	RequestCtxKey = contextKey("requestID")
)

Functions

func MetricsMiddleware

func MetricsMiddleware(next http.Handler) http.Handler

MetricsMiddleware is a net.http compatible middleware that captures some metrics about every request which we then expose via prometheus.

func RequestIDMiddleware

func RequestIDMiddleware(next http.Handler) http.Handler

RequestIDMiddleware is a net.http middleware that adds a unique UUID request ID to requests. If a request ID is already present in the request we use that one else we generate a random UUID. The request ID is added to our context so will be available within any downstream handlers.