This update provides:
1) workaround around the build failures. In
summary, it forces the download of some packages during the build
process.
2) update the set of packages that should go inside the vendor
directory
3) Update the dockerfile to use go 1.10
Change-Id: I2bfd090ce0f25b0c10aa214755ae2da7e5384d60
diff --git a/vendor/github.com/coreos/etcd/proxy/httpproxy/proxy.go b/vendor/github.com/coreos/etcd/proxy/httpproxy/proxy.go
new file mode 100644
index 0000000..3cd3161
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/proxy/httpproxy/proxy.go
@@ -0,0 +1,116 @@
+// 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 httpproxy
+
+import (
+ "encoding/json"
+ "net/http"
+ "strings"
+ "time"
+
+ "golang.org/x/net/http2"
+)
+
+const (
+ // DefaultMaxIdleConnsPerHost indicates the default maximum idle connection
+ // count maintained between proxy and each member. We set it to 128 to
+ // let proxy handle 128 concurrent requests in long term smoothly.
+ // If the number of concurrent requests is bigger than this value,
+ // proxy needs to create one new connection when handling each request in
+ // the delta, which is bad because the creation consumes resource and
+ // may eat up ephemeral ports.
+ DefaultMaxIdleConnsPerHost = 128
+)
+
+// GetProxyURLs is a function which should return the current set of URLs to
+// which client requests should be proxied. This function will be queried
+// periodically by the proxy Handler to refresh the set of available
+// backends.
+type GetProxyURLs func() []string
+
+// NewHandler creates a new HTTP handler, listening on the given transport,
+// which will proxy requests to an etcd cluster.
+// The handler will periodically update its view of the cluster.
+func NewHandler(t *http.Transport, urlsFunc GetProxyURLs, failureWait time.Duration, refreshInterval time.Duration) http.Handler {
+ if t.TLSClientConfig != nil {
+ // Enable http2, see Issue 5033.
+ err := http2.ConfigureTransport(t)
+ if err != nil {
+ plog.Infof("Error enabling Transport HTTP/2 support: %v", err)
+ }
+ }
+
+ p := &reverseProxy{
+ director: newDirector(urlsFunc, failureWait, refreshInterval),
+ transport: t,
+ }
+
+ mux := http.NewServeMux()
+ mux.Handle("/", p)
+ mux.HandleFunc("/v2/config/local/proxy", p.configHandler)
+
+ return mux
+}
+
+// NewReadonlyHandler wraps the given HTTP handler to allow only GET requests
+func NewReadonlyHandler(hdlr http.Handler) http.Handler {
+ readonly := readonlyHandlerFunc(hdlr)
+ return http.HandlerFunc(readonly)
+}
+
+func readonlyHandlerFunc(next http.Handler) func(http.ResponseWriter, *http.Request) {
+ return func(w http.ResponseWriter, req *http.Request) {
+ if req.Method != "GET" {
+ w.WriteHeader(http.StatusNotImplemented)
+ return
+ }
+
+ next.ServeHTTP(w, req)
+ }
+}
+
+func (p *reverseProxy) configHandler(w http.ResponseWriter, r *http.Request) {
+ if !allowMethod(w, r.Method, "GET") {
+ return
+ }
+
+ eps := p.director.endpoints()
+ epstr := make([]string, len(eps))
+ for i, e := range eps {
+ epstr[i] = e.URL.String()
+ }
+
+ proxyConfig := struct {
+ Endpoints []string `json:"endpoints"`
+ }{
+ Endpoints: epstr,
+ }
+
+ json.NewEncoder(w).Encode(proxyConfig)
+}
+
+// allowMethod verifies that the given method is one of the allowed methods,
+// and if not, it writes an error to w. A boolean is returned indicating
+// whether or not the method is allowed.
+func allowMethod(w http.ResponseWriter, m string, ms ...string) bool {
+ for _, meth := range ms {
+ if m == meth {
+ return true
+ }
+ }
+ w.Header().Set("Allow", strings.Join(ms, ","))
+ http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
+ return false
+}