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https://github.com/minio/minio.git
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Service a new WebUI server at port 8081.
It is provided to avoid the router clutter on the Object API end. This is just a first cut sample we are going to build on top of this the new management console UI. General interest comes from subsequently writing a small UI to generate `AccessKey` and `SecretKey` to build authorization layer.
This commit is contained in:
Harshavardhana
299
pkg/api/minioapi/minioapi.go
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299
pkg/api/minioapi/minioapi.go
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/*
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* Mini Object Storage, (C) 2014 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package minioapi
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import (
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"bytes"
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"encoding/json"
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"encoding/xml"
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"log"
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"net/http"
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"strconv"
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"time"
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"github.com/gorilla/mux"
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mstorage "github.com/minio-io/minio/pkg/storage"
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)
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type contentType int
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const (
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xmlType contentType = iota
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jsonType
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)
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const (
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dateFormat = "2006-01-02T15:04:05.000Z"
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)
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type minioApi struct {
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storage mstorage.Storage
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}
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// No encoder interface exists, so we create one.
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type encoder interface {
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Encode(v interface{}) error
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}
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func HttpHandler(storage mstorage.Storage) http.Handler {
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mux := mux.NewRouter()
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var api = minioApi{}
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api.storage = storage
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mux.HandleFunc("/", api.listBucketsHandler).Methods("GET")
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mux.HandleFunc("/{bucket}/", api.listObjectsHandler).Methods("GET")
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mux.HandleFunc("/{bucket}/", api.putBucketHandler).Methods("PUT")
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mux.HandleFunc("/{bucket}/{object:.*}", api.getObjectHandler).Methods("GET")
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mux.HandleFunc("/{bucket}/{object:.*}", api.headObjectHandler).Methods("HEAD")
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mux.HandleFunc("/{bucket}/{object:.*}", api.putObjectHandler).Methods("PUT")
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return ignoreUnimplementedResources(mux)
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}
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func ignoreUnimplementedResources(h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if ignoreUnImplementedObjectResources(r) || ignoreUnImplementedBucketResources(r) {
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w.WriteHeader(http.StatusNotImplemented)
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} else {
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h.ServeHTTP(w, r)
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}
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})
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}
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func (server *minioApi) listBucketsHandler(w http.ResponseWriter, req *http.Request) {
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vars := mux.Vars(req)
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prefix, ok := vars["prefix"]
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if !ok {
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prefix = ""
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}
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acceptsContentType := getContentType(req)
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buckets, err := server.storage.ListBuckets(prefix)
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if err != nil {
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log.Println(err)
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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response := generateBucketsListResult(buckets)
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w.Write(writeObjectHeadersAndResponse(w, response, acceptsContentType))
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}
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func (server *minioApi) listObjectsHandler(w http.ResponseWriter, req *http.Request) {
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vars := mux.Vars(req)
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bucket := vars["bucket"]
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prefix, ok := vars["prefix"]
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if !ok {
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prefix = ""
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}
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acceptsContentType := getContentType(req)
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objects, isTruncated, err := server.storage.ListObjects(bucket, prefix, 1000)
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if err != nil {
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log.Println(err)
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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response := generateObjectsListResult(bucket, objects, isTruncated)
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w.Write(writeObjectHeadersAndResponse(w, response, acceptsContentType))
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}
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func (server *minioApi) putBucketHandler(w http.ResponseWriter, req *http.Request) {
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vars := mux.Vars(req)
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bucket := vars["bucket"]
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err := server.storage.StoreBucket(bucket)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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w.Write([]byte(err.Error()))
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return
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}
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w.Header().Set("Server", "Minio")
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w.Header().Set("Connection", "close")
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}
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func (server *minioApi) getObjectHandler(w http.ResponseWriter, req *http.Request) {
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vars := mux.Vars(req)
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bucket := vars["bucket"]
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object := vars["object"]
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metadata, err := server.storage.GetObjectMetadata(bucket, object)
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switch err := err.(type) {
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case nil: // success
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{
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log.Println("Found: " + bucket + "#" + object)
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writeObjectHeaders(w, metadata)
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if _, err := server.storage.CopyObjectToWriter(w, bucket, object); err != nil {
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log.Println(err)
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}
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}
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case mstorage.ObjectNotFound:
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{
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log.Println(err)
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w.WriteHeader(http.StatusNotFound)
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}
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default:
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{
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log.Println(err)
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w.WriteHeader(http.StatusInternalServerError)
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}
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}
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}
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func (server *minioApi) headObjectHandler(w http.ResponseWriter, req *http.Request) {
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vars := mux.Vars(req)
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bucket := vars["bucket"]
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object := vars["object"]
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metadata, err := server.storage.GetObjectMetadata(bucket, object)
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switch err := err.(type) {
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case nil:
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writeObjectHeaders(w, metadata)
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case mstorage.ObjectNotFound:
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log.Println(err)
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w.WriteHeader(http.StatusNotFound)
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default:
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log.Println(err)
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w.WriteHeader(http.StatusBadRequest)
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}
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}
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func (server *minioApi) putObjectHandler(w http.ResponseWriter, req *http.Request) {
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vars := mux.Vars(req)
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bucket := vars["bucket"]
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object := vars["object"]
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err := server.storage.StoreObject(bucket, object, req.Body)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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w.Write([]byte(err.Error()))
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return
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}
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w.Header().Set("Server", "Minio")
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w.Header().Set("Connection", "close")
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}
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func writeObjectHeadersAndResponse(w http.ResponseWriter, response interface{}, acceptsType contentType) []byte {
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var bytesBuffer bytes.Buffer
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var encoder encoder
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if acceptsType == xmlType {
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w.Header().Set("Content-Type", "application/xml")
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encoder = xml.NewEncoder(&bytesBuffer)
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} else if acceptsType == jsonType {
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w.Header().Set("Content-Type", "application/json")
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encoder = json.NewEncoder(&bytesBuffer)
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}
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w.Header().Set("Server", "Minio")
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w.Header().Set("Connection", "close")
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encoder.Encode(response)
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return bytesBuffer.Bytes()
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}
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// Write Object Header helper
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func writeObjectHeaders(w http.ResponseWriter, metadata mstorage.ObjectMetadata) {
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lastModified := metadata.Created.Format(time.RFC1123)
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w.Header().Set("ETag", metadata.ETag)
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w.Header().Set("Server", "Minio")
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w.Header().Set("Last-Modified", lastModified)
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w.Header().Set("Content-Length", strconv.FormatInt(metadata.Size, 10))
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w.Header().Set("Content-Type", "text/plain")
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w.Header().Set("Connection", "close")
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}
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func generateBucketsListResult(buckets []mstorage.BucketMetadata) BucketListResponse {
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var listbuckets []*Bucket
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var data = BucketListResponse{}
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var owner = Owner{}
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owner.ID = "minio"
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owner.DisplayName = "minio"
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for _, bucket := range buckets {
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var listbucket = &Bucket{}
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listbucket.Name = bucket.Name
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listbucket.CreationDate = bucket.Created.Format(dateFormat)
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listbuckets = append(listbuckets, listbucket)
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}
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data.Owner = owner
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data.Buckets.Bucket = listbuckets
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return data
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}
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//// helpers
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// Checks requests for unimplemented resources
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func ignoreUnImplementedBucketResources(req *http.Request) bool {
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q := req.URL.Query()
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for name := range q {
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if unimplementedBucketResourceNames[name] {
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return true
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}
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}
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return false
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}
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func ignoreUnImplementedObjectResources(req *http.Request) bool {
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q := req.URL.Query()
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for name := range q {
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if unimplementedObjectResourceNames[name] {
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return true
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}
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}
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return false
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}
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func getContentType(req *http.Request) contentType {
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if _, ok := req.Header["Accept"]; ok {
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if req.Header["Accept"][0] == "application/json" {
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return jsonType
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}
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}
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return xmlType
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}
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// takes a set of objects and prepares the objects for serialization
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// input:
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// bucket name
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// array of object metadata
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// results truncated flag
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//
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// output:
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// populated struct that can be serialized to match xml and json api spec output
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func generateObjectsListResult(bucket string, objects []mstorage.ObjectMetadata, isTruncated bool) ObjectListResponse {
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var contents []*Item
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var owner = Owner{}
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var data = ObjectListResponse{}
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owner.ID = "minio"
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owner.DisplayName = "minio"
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for _, object := range objects {
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var content = &Item{}
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content.Key = object.Key
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content.LastModified = object.Created.Format(dateFormat)
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content.ETag = object.ETag
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content.Size = object.Size
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content.StorageClass = "STANDARD"
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content.Owner = owner
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contents = append(contents, content)
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}
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data.Name = bucket
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data.Contents = contents
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data.MaxKeys = MAX_OBJECT_LIST
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data.IsTruncated = isTruncated
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return data
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}
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