This package provides some utility wrapper for the HTTP package. The major protagonist ist the Handler object, which wraps the default http.Server with a mux.Router and takes care to measure durations with prometheus for every HTTP call.
package main
import (
"fmt"
"net/http"
"time"
"github.com/sirupsen/logrus"
"github.com/aklinkert/go-httputils"
)
func main() {
// handler is based on logrus for logging
logger := logrus.New()
httpLogger := logger.WithField("component", "http")
// first address is the main http listener, second one is for the prometheus endpoint
// I usually have both on different ports to have the prometheus metrics endpoint not exposed but
// only serve internal traffic, e.g. only inside a kubernetes cluster or other private network.
handler := httputils.NewHandler(httpLogger, ":8080", ":9090")
// handler provides some useful Handle*() methods that support both http.HandlerFunc http.Handler using
// Handle() and HandleFunc() respectively. Also HandlePrefix() and HandleFuncPrefix() support a prefixed
// catch-all approach, e.g. when you wanna do dynamic routes that are not handled by mux (serving images or so)
handler.HandleFunc("/example", func(rw http.ResponseWriter, r *http.Request) {
_, err := fmt.Fprintf(rw, "Hello from example, current time is %v", time.Now())
if err != nil {
logger.Error(err)
}
})
// default graceful shutdown duration is 2 seconds
handler.SetGracefulShutdownDuration(10 * time.Second)
// Serve() is blocking the main routine until a shutdown is received, using https://github.com/aklinkert/go-exitcontext
// If you want to modify the context behavior use httputils.NewHandlerWithContext(...)
handler.Serve()
}Apache 2.0 Licence