mhttp: initial implementation, very basic

mhttp/mhttp.go

@@ -0,0 +1,36 @@
+// Package mhttp extends the standard package with extra functionality which is
+// commonly useful
+package mhttp
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/mediocregopher/mediocre-go-lib/mcfg"
+	"github.com/mediocregopher/mediocre-go-lib/mlog"
+)
+
+// CfgServer initializes and returns an *http.Server which will initialize on
+// the Start hook. This also sets up config params for configuring the address
+// being listened on.
+func CfgServer(cfg *mcfg.Cfg, h http.Handler) *http.Server {
+	cfg = cfg.Child("http")
+	addr := cfg.ParamString("addr", ":0", "Address to listen on. Default is any open port")
+
+	srv := http.Server{Handler: h}
+	cfg.Start.Then(func(ctx context.Context) error {
+		srv.Addr = *addr
+		kv := mlog.KV{"addr": *addr}
+		mlog.Info("HTTP server listening", kv)
+		go func() {
+			err := srv.ListenAndServe()
+			// TODO the listening log should happen here, somehow, now that we
+			// know the actual address being listened on
+			mlog.Fatal("http server fataled", kv, mlog.ErrKV(err))
+		}()
+		return nil
+	})
+
+	// TODO shutdown logic
+	return &srv
+}