first commit. Way too late.

handlerWrapper.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+type errorWrapper struct {
+	Error error `json:"error"`
+}
+
+type ApiHandler func(w http.ResponseWriter, request *http.Request) (interface{}, error)
+
+func (this ApiHandler) ServeHTTP(w http.ResponseWriter, request *http.Request) {
+	ret, err := this(w, request)
+	if err != nil {
+		ret = &errorWrapper{err}
+		w.WriteHeader(500)
+	} else {
+		w.WriteHeader(200)
+	}
+	enc := json.NewEncoder(w)
+	enc.Encode(ret)
+}