From 5756189f0db828829603d6e101d99254a0c3a9ed Mon Sep 17 00:00:00 2001
From: Brendan Burns <bburns@google.com>
Date: Mon, 23 Jun 2014 19:57:54 -0700
Subject: [PATCH] Added a proxy server to cloudcfg

---
 cmd/cloudcfg/cloudcfg.go     | 11 ++++++++
 hooks/boilerplate.sh         |  1 +
 pkg/cloudcfg/proxy_server.go | 49 ++++++++++++++++++++++++++++++++++++
 3 files changed, 61 insertions(+)
 create mode 100644 pkg/cloudcfg/proxy_server.go

diff --git a/cmd/cloudcfg/cloudcfg.go b/cmd/cloudcfg/cloudcfg.go
index 8675ebec7f..10d5e3b17a 100644
--- a/cmd/cloudcfg/cloudcfg.go
+++ b/cmd/cloudcfg/cloudcfg.go
@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"log"
+	"net/http"
 	"net/url"
 	"os"
 	"strconv"
@@ -46,6 +47,7 @@ var (
 	json         = flag.Bool("json", false, "If true, print raw JSON for responses")
 	yaml         = flag.Bool("yaml", false, "If true, print raw YAML for responses")
 	verbose      = flag.Bool("verbose", false, "If true, print extra information")
+	proxy        = flag.Bool("proxy", false, "If true, run a proxy to the api server")
 )
 
 func usage() {
@@ -118,6 +120,15 @@ func main() {
 		}
 	}
 
+	if *proxy {
+		server := cloudcfg.ProxyServer{
+			Host:   *httpServer,
+			Client: &http.Client{},
+		}
+		http.Handle("/api/", &server)
+		log.Fatal(http.ListenAndServe(":8001", nil))
+	}
+
 	matchFound := executeAPIRequest(method, auth) || executeControllerRequest(method, auth)
 	if matchFound == false {
 		log.Fatalf("Unknown command %s", method)
diff --git a/hooks/boilerplate.sh b/hooks/boilerplate.sh
index 33c31cbf5b..17d049b9cf 100755
--- a/hooks/boilerplate.sh
+++ b/hooks/boilerplate.sh
@@ -6,6 +6,7 @@ LINES=$(cat "$(dirname $0)/boilerplate.txt" | wc -l)
 DIFFER=$(head -$LINES "${FILE}" | diff -q - "$(dirname $0)/boilerplate.txt")
 
 if [[ -z "${DIFFER}" ]]; then
+  echo "${DIFFER}"
   echo "1"
   exit 0
 fi
diff --git a/pkg/cloudcfg/proxy_server.go b/pkg/cloudcfg/proxy_server.go
new file mode 100644
index 0000000000..77270edad7
--- /dev/null
+++ b/pkg/cloudcfg/proxy_server.go
@@ -0,0 +1,49 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+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 cloudcfg
+
+import (
+	"io/ioutil"
+	"log"
+	"net/http"
+)
+
+type ProxyServer struct {
+	Host   string
+	Client *http.Client
+}
+
+func (s *ProxyServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	req, err := http.NewRequest(r.Method, s.Host+r.URL.Path, r.Body)
+	if err != nil {
+		log.Printf("Error: %#v", err)
+		return
+	}
+	res, err := s.Client.Do(req)
+	if err != nil {
+		log.Printf("Error: %#v", err)
+		return
+	}
+	w.WriteHeader(res.StatusCode)
+	defer res.Body.Close()
+	data, err := ioutil.ReadAll(res.Body)
+	if err != nil {
+		log.Printf("Error: %#v", err)
+		return
+	}
+	w.Write(data)
+}