[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/coreos/etcd/etcdserver/api/v2http/capability.go b/vendor/github.com/coreos/etcd/etcdserver/api/v2http/capability.go
new file mode 100644
index 0000000..fa0bcca
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/etcdserver/api/v2http/capability.go
@@ -0,0 +1,40 @@
+// Copyright 2015 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v2http
+
+import (
+ "fmt"
+ "net/http"
+
+ "github.com/coreos/etcd/etcdserver/api"
+ "github.com/coreos/etcd/etcdserver/api/v2http/httptypes"
+)
+
+func capabilityHandler(c api.Capability, fn func(http.ResponseWriter, *http.Request)) http.HandlerFunc {
+ return func(w http.ResponseWriter, r *http.Request) {
+ if !api.IsCapabilityEnabled(c) {
+ notCapable(w, r, c)
+ return
+ }
+ fn(w, r)
+ }
+}
+
+func notCapable(w http.ResponseWriter, r *http.Request, c api.Capability) {
+ herr := httptypes.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Not capable of accessing %s feature during rolling upgrades.", c))
+ if err := herr.WriteTo(w); err != nil {
+ plog.Debugf("error writing HTTPError (%v) to %s", err, r.RemoteAddr)
+ }
+}