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minio/pkg/webapi/minioapi/minioapi.go

305 lines
7.7 KiB

/*
* Mini Object Storage, (C) 2014 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 minioapi
import (
"bytes"
"encoding/json"
"encoding/xml"
"log"
"net/http"
"strconv"
"time"
"github.com/gorilla/mux"
mstorage "github.com/minio-io/minio/pkg/storage"
)
const (
xmlType = iota
jsonType
)
const (
dateFormat = "2006-01-02T15:04:05.000Z"
)
type minioApi struct {
storage mstorage.Storage
}
// No encoder interface exists, so we create one.
type encoder interface {
Encode(v interface{}) error
}
func HttpHandler(storage mstorage.Storage) http.Handler {
mux := mux.NewRouter()
var api = minioApi{}
api.storage = storage
mux.HandleFunc("/", api.listBucketsHandler).Methods("GET")
mux.HandleFunc("/{bucket}/", api.listObjectsHandler).Methods("GET")
10 years ago
mux.HandleFunc("/{bucket}/", api.putBucketHandler).Methods("PUT")
mux.HandleFunc("/{bucket}/{object:.*}", api.getObjectHandler).Methods("GET")
mux.HandleFunc("/{bucket}/{object:.*}", api.headObjectHandler).Methods("HEAD")
mux.HandleFunc("/{bucket}/{object:.*}", api.putObjectHandler).Methods("PUT")
return mux
}
func (server *minioApi) ignoreUnImplementedBucketResources(req *http.Request) bool {
q := req.URL.Query()
for name := range q {
if unimplementedBucketResourceNames[name] {
return true
}
}
return false
}
func (server *minioApi) ignoreUnImplementedObjectResources(req *http.Request) bool {
q := req.URL.Query()
for name := range q {
if unimplementedObjectResourceNames[name] {
return true
}
}
return false
}
func (server *minioApi) getObjectHandler(w http.ResponseWriter, req *http.Request) {
if server.ignoreUnImplementedObjectResources(req) {
w.WriteHeader(http.StatusNotImplemented)
return
}
vars := mux.Vars(req)
bucket := vars["bucket"]
object := vars["object"]
metadata, err := server.storage.GetObjectMetadata(bucket, object)
switch err := err.(type) {
case nil: // success
{
log.Println("Found: " + bucket + "#" + object)
writeObjectHeaders(w, metadata)
if _, err := server.storage.CopyObjectToWriter(w, bucket, object); err != nil {
log.Println(err)
}
}
case mstorage.ObjectNotFound:
{
log.Println(err)
w.WriteHeader(http.StatusNotFound)
}
default:
{
log.Println(err)
w.WriteHeader(http.StatusInternalServerError)
}
}
}
func (server *minioApi) headObjectHandler(w http.ResponseWriter, req *http.Request) {
vars := mux.Vars(req)
bucket := vars["bucket"]
object := vars["object"]
metadata, err := server.storage.GetObjectMetadata(bucket, object)
switch err := err.(type) {
case nil:
writeObjectHeaders(w, metadata)
case mstorage.ObjectNotFound:
log.Println(err)
w.WriteHeader(http.StatusNotFound)
default:
log.Println(err)
w.WriteHeader(http.StatusBadRequest)
}
}
func populateHeaders(w http.ResponseWriter, response interface{}, contentType int) []byte {
var bytesBuffer bytes.Buffer
var encoder encoder
if contentType == xmlType {
w.Header().Set("Content-Type", "application/xml")
w.Header().Set("Server", "Minio")
w.Header().Set("Connection", "close")
encoder = xml.NewEncoder(&bytesBuffer)
} else if contentType == jsonType {
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Server", "Minio")
w.Header().Set("Connection", "close")
encoder = json.NewEncoder(&bytesBuffer)
}
encoder.Encode(response)
return bytesBuffer.Bytes()
}
func (server *minioApi) listBucketsHandler(w http.ResponseWriter, req *http.Request) {
if server.ignoreUnImplementedBucketResources(req) {
w.WriteHeader(http.StatusNotImplemented)
return
}
vars := mux.Vars(req)
prefix, ok := vars["prefix"]
if !ok {
prefix = ""
}
contentType := xmlType
if _, ok := req.Header["Accept"]; ok {
if req.Header["Accept"][0] == "application/json" {
contentType = jsonType
}
}
buckets, err := server.storage.ListBuckets(prefix)
if err != nil {
log.Println(err)
w.WriteHeader(http.StatusInternalServerError)
return
}
response := generateBucketsListResult(buckets)
w.Write(populateHeaders(w, response, contentType))
}
func (server *minioApi) listObjectsHandler(w http.ResponseWriter, req *http.Request) {
if server.ignoreUnImplementedBucketResources(req) {
w.WriteHeader(http.StatusNotImplemented)
return
}
vars := mux.Vars(req)
bucket := vars["bucket"]
prefix, ok := vars["prefix"]
if !ok {
prefix = ""
}
contentType := xmlType
if _, ok := req.Header["Accept"]; ok {
if req.Header["Accept"][0] == "application/json" {
contentType = jsonType
}
}
objects, isTruncated, err := server.storage.ListObjects(bucket, prefix, 1000)
if err != nil {
log.Println(err)
w.WriteHeader(http.StatusInternalServerError)
return
}
response := generateObjectsListResult(bucket, objects, isTruncated)
w.Write(populateHeaders(w, response, contentType))
}
func (server *minioApi) putObjectHandler(w http.ResponseWriter, req *http.Request) {
if server.ignoreUnImplementedBucketResources(req) {
w.WriteHeader(http.StatusNotImplemented)
return
}
vars := mux.Vars(req)
bucket := vars["bucket"]
object := vars["object"]
err := server.storage.StoreObject(bucket, object, req.Body)
if err != nil {
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte(err.Error()))
return
}
w.Header().Set("Server", "Minio")
w.Header().Set("Connection", "close")
}
func (server *minioApi) putBucketHandler(w http.ResponseWriter, req *http.Request) {
if server.ignoreUnImplementedBucketResources(req) {
w.WriteHeader(http.StatusNotImplemented)
return
}
vars := mux.Vars(req)
bucket := vars["bucket"]
err := server.storage.StoreBucket(bucket)
if err != nil {
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte(err.Error()))
return
}
w.Header().Set("Server", "Minio")
w.Header().Set("Connection", "close")
}
// Write Object Header helper
func writeObjectHeaders(w http.ResponseWriter, metadata mstorage.ObjectMetadata) {
lastModified := metadata.Created.Format(time.RFC1123)
w.Header().Set("ETag", metadata.ETag)
w.Header().Set("Server", "Minio")
w.Header().Set("Last-Modified", lastModified)
w.Header().Set("Content-Length", strconv.FormatInt(metadata.Size, 10))
w.Header().Set("Content-Type", "text/plain")
w.Header().Set("Connection", "close")
}
func generateBucketsListResult(buckets []mstorage.BucketMetadata) BucketListResponse {
var listbuckets []*Bucket
var data = BucketListResponse{}
var owner = Owner{}
owner.ID = "minio"
owner.DisplayName = "minio"
for _, bucket := range buckets {
var listbucket = &Bucket{}
listbucket.Name = bucket.Name
listbucket.CreationDate = bucket.Created.Format(dateFormat)
listbuckets = append(listbuckets, listbucket)
}
data.Owner = owner
data.Buckets.Bucket = listbuckets
return data
}
func generateObjectsListResult(bucket string, objects []mstorage.ObjectMetadata, isTruncated bool) ObjectListResponse {
var contents []*Item
var owner = Owner{}
var data = ObjectListResponse{}
owner.ID = "minio"
owner.DisplayName = "minio"
for _, object := range objects {
var content = &Item{}
content.Key = object.Key
content.LastModified = object.Created.Format(dateFormat)
content.ETag = object.ETag
content.Size = object.Size
content.StorageClass = "STANDARD"
content.Owner = owner
contents = append(contents, content)
}
data.Name = bucket
data.Contents = contents
data.MaxKeys = MAX_OBJECT_LIST
data.IsTruncated = isTruncated
return data
}