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minio/pkg/api/api_object_handlers.go

221 lines
7.2 KiB

/*
* Minimalist Object Storage, (C) 2015 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 api
import (
"net/http"
"github.com/gorilla/mux"
"github.com/minio-io/minio/pkg/drivers"
"github.com/minio-io/minio/pkg/utils/log"
)
// GET Object
// ----------
// This implementation of the GET operation retrieves object. To use GET,
// you must have READ access to the object.
func (server *minioAPI) getObjectHandler(w http.ResponseWriter, req *http.Request) {
var object, bucket string
acceptsContentType := getContentType(req)
vars := mux.Vars(req)
bucket = vars["bucket"]
object = vars["object"]
metadata, err := server.driver.GetObjectMetadata(bucket, object, "")
switch err := err.(type) {
case nil: // success
{
log.Println("Found: " + bucket + "#" + object)
httpRange, err := newRange(req, metadata.Size)
if err != nil {
log.Errorln(err)
error := errorCodeError(InvalidRange)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
return
}
switch httpRange.start == 0 && httpRange.length == 0 {
case true:
writeObjectHeaders(w, metadata)
if _, err := server.driver.GetObject(w, bucket, object); err != nil {
log.Errorln(err)
error := errorCodeError(InternalError)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
return
}
case false:
metadata.Size = httpRange.length
writeRangeObjectHeaders(w, metadata, httpRange.getContentRange())
w.WriteHeader(http.StatusPartialContent)
_, err := server.driver.GetPartialObject(w, bucket, object, httpRange.start, httpRange.length)
if err != nil {
log.Errorln(err)
error := errorCodeError(InternalError)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
return
}
}
}
case drivers.ObjectNotFound:
{
error := errorCodeError(NoSuchKey)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.ObjectNameInvalid:
{
error := errorCodeError(NoSuchKey)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.BucketNameInvalid:
{
error := errorCodeError(InvalidBucketName)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.ImplementationError:
{
// Embed errors log on serve side
log.Errorln(err)
error := errorCodeError(InternalError)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
}
}
// HEAD Object
// -----------
// The HEAD operation retrieves metadata from an object without returning the object itself.
func (server *minioAPI) headObjectHandler(w http.ResponseWriter, req *http.Request) {
var object, bucket string
acceptsContentType := getContentType(req)
vars := mux.Vars(req)
bucket = vars["bucket"]
object = vars["object"]
metadata, err := server.driver.GetObjectMetadata(bucket, object, "")
switch err := err.(type) {
case nil:
writeObjectHeaders(w, metadata)
case drivers.ObjectNotFound:
{
error := errorCodeError(NoSuchKey)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.ObjectNameInvalid:
{
error := errorCodeError(NoSuchKey)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.ImplementationError:
{
// Embed error log on server side
log.Errorln(err)
error := errorCodeError(InternalError)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
}
}
// PUT Object
// ----------
// This implementation of the PUT operation adds an object to a bucket.
func (server *minioAPI) putObjectHandler(w http.ResponseWriter, req *http.Request) {
var object, bucket string
vars := mux.Vars(req)
acceptsContentType := getContentType(req)
bucket = vars["bucket"]
object = vars["object"]
resources := getBucketResources(req.URL.Query())
if resources.Policy == true && object == "" {
server.putBucketPolicyHandler(w, req)
return
}
// get Content-MD5 sent by client
md5 := req.Header.Get("Content-MD5")
err := server.driver.CreateObject(bucket, object, "", md5, req.Body)
switch err := err.(type) {
case nil:
w.Header().Set("Server", "Minio")
w.Header().Set("Connection", "close")
case drivers.ImplementationError:
{
// Embed error log on server side
log.Errorln(err)
error := errorCodeError(InternalError)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.BucketNotFound:
{
error := errorCodeError(NoSuchBucket)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.BucketNameInvalid:
{
error := errorCodeError(InvalidBucketName)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.ObjectExists:
{
error := errorCodeError(NotImplemented)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.BadDigest:
{
error := errorCodeError(BadDigest)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
case drivers.InvalidDigest:
{
error := errorCodeError(InvalidDigest)
errorResponse := getErrorResponse(error, "/"+bucket+"/"+object)
w.WriteHeader(error.HTTPStatusCode)
w.Write(writeErrorResponse(w, errorResponse, acceptsContentType))
}
}
}