A client/server helper wrapper for endpoints in Go.

go/src/infra/gae/epservice/example/service_currentvalue.go

Index: go/src/infra/gae/epservice/example/service_currentvalue.go
diff --git a/go/src/infra/gae/epservice/example/service_currentvalue.go b/go/src/infra/gae/epservice/example/service_currentvalue.go
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+++ b/go/src/infra/gae/epservice/example/service_currentvalue.go
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+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package example
+
+import (
+	"golang.org/x/net/context"
+	"infra/gae/libs/wrapper"
+	"infra/gae/libs/wrapper/gae"
+
+	"github.com/GoogleCloudPlatform/go-endpoints/endpoints"
+)
+
+// CurrentValueReq describes the inputs to the CurrentValueReq RPC.
+type CurrentValueReq struct {
+	Name string `endpoints:"required"`
+}
+
+// CurrentValueRsp describes the outputs of the CurrentValueReq RPC.
+type CurrentValueRsp struct {
+	Val int64 `json:",string"`
+}
+
+// CurrentValue gets the current value of a counter (duh)
+func (Example) CurrentValue(c endpoints.Context, r *CurrentValueReq) (rsp *CurrentValueRsp, err error) {
+	ds := wrapper.GetDS(gae.Use(context.Background(), c))
+
+	ctr := &Counter{ID: r.Name}
+	if err = ds.Get(ctr); err != nil {
+		return
+	}
+
+	rsp = &CurrentValueRsp{ctr.Val}
+	return
+}
+
+func init() {
+	mi["CurrentValue"] = &endpoints.MethodInfo{
+		Path: "counter/{Name}",
+		Desc: "Returns the current value held by the named counter",
+	}
+}