server: Move all the top level files into cmd folder. (#2490)

This change brings a change which was done for the 'mc'
package to allow for clean repo and have a cleaner
github drop in experience.

cmd/web-router.go

@@ -0,0 +1,87 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * 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 cmd
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/elazarl/go-bindata-assetfs"
+	"github.com/gorilla/handlers"
+	router "github.com/gorilla/mux"
+	jsonrpc "github.com/gorilla/rpc/v2"
+	"github.com/gorilla/rpc/v2/json2"
+	"github.com/minio/miniobrowser"
+)
+
+// webAPI container for Web API.
+type webAPIHandlers struct {
+	ObjectAPI ObjectLayer
+}
+
+// indexHandler - Handler to serve index.html
+type indexHandler struct {
+	handler http.Handler
+}
+
+func (h indexHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	r.URL.Path = reservedBucket + "/"
+	h.handler.ServeHTTP(w, r)
+}
+
+const assetPrefix = "production"
+
+func assetFS() *assetfs.AssetFS {
+	return &assetfs.AssetFS{
+		Asset:     miniobrowser.Asset,
+		AssetDir:  miniobrowser.AssetDir,
+		AssetInfo: miniobrowser.AssetInfo,
+		Prefix:    assetPrefix,
+	}
+}
+
+// specialAssets are files which are unique files not embedded inside index_bundle.js.
+const specialAssets = "loader.css|logo.svg|firefox.png|safari.png|chrome.png|favicon.ico"
+
+// registerWebRouter - registers web router for serving minio browser.
+func registerWebRouter(mux *router.Router, web *webAPIHandlers) {
+	// Initialize a new json2 codec.
+	codec := json2.NewCodec()
+
+	// Minio browser router.
+	webBrowserRouter := mux.NewRoute().PathPrefix(reservedBucket).Subrouter()
+
+	// Initialize json rpc handlers.
+	webRPC := jsonrpc.NewServer()
+	webRPC.RegisterCodec(codec, "application/json")
+	webRPC.RegisterCodec(codec, "application/json; charset=UTF-8")
+	webRPC.RegisterService(web, "Web")
+
+	// RPC handler at URI - /minio/webrpc
+	webBrowserRouter.Methods("POST").Path("/webrpc").Handler(webRPC)
+	webBrowserRouter.Methods("PUT").Path("/upload/{bucket}/{object:.+}").HandlerFunc(web.Upload)
+	webBrowserRouter.Methods("GET").Path("/download/{bucket}/{object:.+}").Queries("token", "{token:.*}").HandlerFunc(web.Download)
+
+	// Add compression for assets.
+	compressedAssets := handlers.CompressHandler(http.StripPrefix(reservedBucket, http.FileServer(assetFS())))
+
+	// Serve javascript files and favicon from assets.
+	webBrowserRouter.Path(fmt.Sprintf("/{assets:[^/]+.js|%s}", specialAssets)).Handler(compressedAssets)
+
+	// Serve index.html for rest of the requests.
+	webBrowserRouter.Path("/{index:.*}").Handler(indexHandler{http.StripPrefix(reservedBucket, http.FileServer(assetFS()))})
+}