Package hnynethttp provides Honeycomb wrappers for net/http Handlers.
hnynethttp provides wrappers for the `net/http` types: Handler and HandlerFunc
For best results, use WrapHandler to wrap the mux passed to http.ListenAndServe - this will get you an event for every HTTP request handled by the server.
Wrapping individual Handlers or HandleFuncs will generate events only for the endpoints that are wrapped; 404s, for example, will not generate events.
For a complete example showing this wrapper in use, please see the examples in https://github.com/honeycombio/beeline-go/tree/main/examples
WrapHandler will create a Honeycomb event per invocation of this handler with all the standard HTTP fields attached. If passed a ServeMux instead, pull what you can from there
// assume you have a handler named hello var hello func(w http.ResponseWriter, r *http.Request) globalmux := http.NewServeMux() // add a bunch of routes to the muxer globalmux.HandleFunc("/hello/", hello) // wrap the globalmux with the honeycomb middleware to send one event per // request http.ListenAndServe(":8080", WrapHandler(globalmux))
func WrapHandlerFunc(hf func(http.ResponseWriter, *http.Request)) func(http.ResponseWriter, *http.Request)
WrapHandlerFunc will create a Honeycomb event per invocation of this handler function with all the standard HTTP fields attached.
// assume you have a handler function named helloServer var helloServer func(w http.ResponseWriter, r *http.Request) http.HandleFunc("/hello", WrapHandlerFunc(helloServer))
WrapHandlerWithConfig will create a Honeycomb event per invocation of this handler with all the standard HTTP fields attached. If passed a ServeMux instead, pull what you can from there. The provided config has a HTTPTraceParserHook, it will be invoked when creating a new span or trace for each incoming HTTP request.
WrapRoundTripper wraps an http transport for outgoing HTTP calls. Using a wrapped transport will send an event to Honeycomb for each outbound HTTP call you make. Include a context with outbound requests when possible to enable correlation
func WrapRoundTripperWithConfig(r http.RoundTripper, cfg config.HTTPOutgoingConfig) http.RoundTripper
WrapRoundTripperWithConfig is a version of WrapRoundTripper that accepts a config. If the config contains a HTTPTracePropagationHook, it will be invoked on each outgoing HTTP call. The return value, a map of header names to header strings, will be added to the headers of the outgoing request.