minio/cmd/web-router.go

112 lines
3.5 KiB
Go

/*
* 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"
"strings"
"github.com/elazarl/go-bindata-assetfs"
"github.com/gorilla/handlers"
"github.com/gorilla/mux"
jsonrpc "github.com/gorilla/rpc/v2"
"github.com/gorilla/rpc/v2/json2"
"github.com/minio/minio/browser"
)
// webAPI container for Web API.
type webAPIHandlers struct {
ObjectAPI func() ObjectLayer
CacheAPI func() CacheObjectLayer
}
// 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 = minioReservedBucketPath + "/"
h.handler.ServeHTTP(w, r)
}
const assetPrefix = "production"
func assetFS() *assetfs.AssetFS {
return &assetfs.AssetFS{
Asset: browser.Asset,
AssetDir: browser.AssetDir,
AssetInfo: browser.AssetInfo,
Prefix: assetPrefix,
}
}
// specialAssets are files which are unique files not embedded inside index_bundle.js.
const specialAssets = ".*index_bundle.*.js$|.*loader.css$|.*logo.svg$|.*firefox.png$|.*safari.png$|.*chrome.png$|.*favicon.ico$"
// registerWebRouter - registers web router for serving minio browser.
func registerWebRouter(router *mux.Router) error {
// Initialize Web.
web := &webAPIHandlers{
ObjectAPI: newObjectLayerFn,
CacheAPI: newCacheObjectsFn,
}
// Initialize a new json2 codec.
codec := json2.NewCodec()
// Minio browser router.
webBrowserRouter := router.PathPrefix(minioReservedBucketPath).Subrouter()
// Initialize json rpc handlers.
webRPC := jsonrpc.NewServer()
webRPC.RegisterCodec(codec, "application/json")
webRPC.RegisterCodec(codec, "application/json; charset=UTF-8")
// Register RPC handlers with server
if err := webRPC.RegisterService(web, "Web"); err != nil {
return err
}
// RPC handler at URI - /minio/webrpc
webBrowserRouter.Methods("POST").Path("/webrpc").Handler(webRPC)
webBrowserRouter.Methods("PUT").Path("/upload/{bucket}/{object:.+}").HandlerFunc(httpTraceHdrs(web.Upload))
// These methods use short-expiry tokens in the URLs. These tokens may unintentionally
// be logged, so a new one must be generated for each request.
webBrowserRouter.Methods("GET").Path("/download/{bucket}/{object:.+}").Queries("token", "{token:.*}").HandlerFunc(web.Download)
webBrowserRouter.Methods("POST").Path("/zip").Queries("token", "{token:.*}").HandlerFunc(httpTraceHdrs(web.DownloadZip))
// Add compression for assets.
h := http.FileServer(assetFS())
compressedAssets := handlers.CompressHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
idx := strings.LastIndex(r.URL.Path, slashSeparator)
if idx != -1 {
r.URL.Path = r.URL.Path[idx+1:]
}
h.ServeHTTP(w, r)
}))
// Serve javascript files and favicon from assets.
webBrowserRouter.Path(fmt.Sprintf("/{assets:%s}", specialAssets)).Handler(compressedAssets)
// Serve index.html for rest of the requests.
webBrowserRouter.Path("/{index:.*}").Handler(indexHandler{http.StripPrefix(minioReservedBucketPath, h)})
return nil
}