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minio/pkg/server/api/object-handlers.go

591 lines
19 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 implieapi.Donut.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package api
import (
"net/http"
"strconv"
"github.com/gorilla/mux"
"github.com/minio/minio/pkg/donut"
"github.com/minio/minio/pkg/iodine"
"github.com/minio/minio/pkg/utils/log"
)
const (
maxPartsList = 1000
)
// GetObjectHandler - GET Object
// ----------
// This implementation of the GET operation retrieves object. To use GET,
// you must have READ access to the object.
func (api Minio) GetObjectHandler(w http.ResponseWriter, req *http.Request) {
// ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
var object, bucket string
vars := mux.Vars(req)
bucket = vars["bucket"]
object = vars["object"]
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
metadata, err := api.Donut.GetObjectMetadata(bucket, object, signature)
switch iodine.ToError(err).(type) {
case nil: // success
{
httpRange, err := getRequestedRange(req, metadata.Size)
if err != nil {
writeErrorResponse(w, req, InvalidRange, acceptsContentType, req.URL.Path)
return
}
switch httpRange.start == 0 && httpRange.length == 0 {
case true:
setObjectHeaders(w, metadata)
if _, err := api.Donut.GetObject(w, bucket, object); err != nil {
// unable to write headers, we've already printed data. Just close the connection.
log.Error.Println(iodine.New(err, nil))
}
case false:
metadata.Size = httpRange.length
setRangeObjectHeaders(w, metadata, httpRange)
w.WriteHeader(http.StatusPartialContent)
if _, err := api.Donut.GetPartialObject(w, bucket, object, httpRange.start, httpRange.length); err != nil {
// unable to write headers, we've already printed data. Just close the connection.
log.Error.Println(iodine.New(err, nil))
}
}
}
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.BucketNameInvalid:
writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
case donut.BucketNotFound:
writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
case donut.ObjectNotFound:
writeErrorResponse(w, req, NoSuchKey, acceptsContentType, req.URL.Path)
case donut.ObjectNameInvalid:
writeErrorResponse(w, req, NoSuchKey, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// HeadObjectHandler - HEAD Object
// -----------
// The HEAD operation retrieves metadata from an object without returning the object itself.
func (api Minio) HeadObjectHandler(w http.ResponseWriter, req *http.Request) {
// ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
var object, bucket string
vars := mux.Vars(req)
bucket = vars["bucket"]
object = vars["object"]
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
metadata, err := api.Donut.GetObjectMetadata(bucket, object, signature)
switch iodine.ToError(err).(type) {
case nil:
setObjectHeaders(w, metadata)
w.WriteHeader(http.StatusOK)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.BucketNameInvalid:
writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
case donut.BucketNotFound:
writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
case donut.ObjectNotFound:
writeErrorResponse(w, req, NoSuchKey, acceptsContentType, req.URL.Path)
case donut.ObjectNameInvalid:
writeErrorResponse(w, req, NoSuchKey, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// PutObjectHandler - PUT Object
// ----------
// This implementation of the PUT operation adds an object to a bucket.
func (api Minio) PutObjectHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
var object, bucket string
vars := mux.Vars(req)
bucket = vars["bucket"]
object = vars["object"]
// get Content-MD5 sent by client and verify if valid
md5 := req.Header.Get("Content-MD5")
if !isValidMD5(md5) {
writeErrorResponse(w, req, InvalidDigest, acceptsContentType, req.URL.Path)
return
}
/// if Content-Length missing, deny the request
size := req.Header.Get("Content-Length")
if size == "" {
writeErrorResponse(w, req, MissingContentLength, acceptsContentType, req.URL.Path)
return
}
/// maximum Upload size for objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(w, req, EntityTooLarge, acceptsContentType, req.URL.Path)
return
}
/// minimum Upload size for objects in a single operation
//
// Surprisingly while Amazon in their document states that S3 objects have 1byte
// as the minimum limit, they do not seem to enforce it one can successfully
// create a 0byte file using a regular putObject() operation
//
// if isMinObjectSize(size) {
// writeErrorResponse(w, req, EntityTooSmall, acceptsContentType, req.URL.Path)
// return
// }
sizeInt64, err := strconv.ParseInt(size, 10, 64)
if err != nil {
writeErrorResponse(w, req, InvalidRequest, acceptsContentType, req.URL.Path)
return
}
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
metadata, err := api.Donut.CreateObject(bucket, object, md5, sizeInt64, req.Body, nil, signature)
switch iodine.ToError(err).(type) {
case nil:
w.Header().Set("ETag", metadata.MD5Sum)
writeSuccessResponse(w, acceptsContentType)
case donut.BucketNotFound:
writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
case donut.BucketNameInvalid:
writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
case donut.ObjectExists:
writeErrorResponse(w, req, MethodNotAllowed, acceptsContentType, req.URL.Path)
case donut.BadDigest:
writeErrorResponse(w, req, BadDigest, acceptsContentType, req.URL.Path)
case donut.MissingDateHeader:
writeErrorResponse(w, req, RequestTimeTooSkewed, acceptsContentType, req.URL.Path)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.IncompleteBody:
writeErrorResponse(w, req, IncompleteBody, acceptsContentType, req.URL.Path)
case donut.EntityTooLarge:
writeErrorResponse(w, req, EntityTooLarge, acceptsContentType, req.URL.Path)
case donut.InvalidDigest:
writeErrorResponse(w, req, InvalidDigest, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
/// Multipart API
// NewMultipartUploadHandler - New multipart upload
func (api Minio) NewMultipartUploadHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
if !isRequestUploads(req.URL.Query()) {
writeErrorResponse(w, req, MethodNotAllowed, acceptsContentType, req.URL.Path)
return
}
var object, bucket string
vars := mux.Vars(req)
bucket = vars["bucket"]
object = vars["object"]
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
uploadID, err := api.Donut.NewMultipartUpload(bucket, object, req.Header.Get("Content-Type"), signature)
switch iodine.ToError(err).(type) {
case nil:
{
response := generateInitiateMultipartUploadResponse(bucket, object, uploadID)
encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
// write headers
setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
// write body
w.Write(encodedSuccessResponse)
}
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.ObjectExists:
writeErrorResponse(w, req, MethodNotAllowed, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// PutObjectPartHandler - Upload part
func (api Minio) PutObjectPartHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
// get Content-MD5 sent by client and verify if valid
md5 := req.Header.Get("Content-MD5")
if !isValidMD5(md5) {
writeErrorResponse(w, req, InvalidDigest, acceptsContentType, req.URL.Path)
return
}
/// if Content-Length missing, throw away
size := req.Header.Get("Content-Length")
if size == "" {
writeErrorResponse(w, req, MissingContentLength, acceptsContentType, req.URL.Path)
return
}
/// maximum Upload size for multipart objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(w, req, EntityTooLarge, acceptsContentType, req.URL.Path)
return
}
sizeInt64, err := strconv.ParseInt(size, 10, 64)
if err != nil {
writeErrorResponse(w, req, InvalidRequest, acceptsContentType, req.URL.Path)
return
}
vars := mux.Vars(req)
bucket := vars["bucket"]
object := vars["object"]
uploadID := req.URL.Query().Get("uploadId")
partIDString := req.URL.Query().Get("partNumber")
partID, err := strconv.Atoi(partIDString)
if err != nil {
writeErrorResponse(w, req, InvalidPart, acceptsContentType, req.URL.Path)
}
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
calculatedMD5, err := api.Donut.CreateObjectPart(bucket, object, uploadID, partID, "", md5, sizeInt64, req.Body, signature)
switch iodine.ToError(err).(type) {
case nil:
w.Header().Set("ETag", calculatedMD5)
writeSuccessResponse(w, acceptsContentType)
case donut.InvalidUploadID:
writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
case donut.ObjectExists:
writeErrorResponse(w, req, MethodNotAllowed, acceptsContentType, req.URL.Path)
case donut.BadDigest:
writeErrorResponse(w, req, BadDigest, acceptsContentType, req.URL.Path)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.IncompleteBody:
writeErrorResponse(w, req, IncompleteBody, acceptsContentType, req.URL.Path)
case donut.EntityTooLarge:
writeErrorResponse(w, req, EntityTooLarge, acceptsContentType, req.URL.Path)
case donut.InvalidDigest:
writeErrorResponse(w, req, InvalidDigest, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// AbortMultipartUploadHandler - Abort multipart upload
func (api Minio) AbortMultipartUploadHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
vars := mux.Vars(req)
bucket := vars["bucket"]
object := vars["object"]
objectResourcesMetadata := getObjectResources(req.URL.Query())
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
err := api.Donut.AbortMultipartUpload(bucket, object, objectResourcesMetadata.UploadID, signature)
switch iodine.ToError(err).(type) {
case nil:
setCommonHeaders(w, getContentTypeString(acceptsContentType), 0)
w.WriteHeader(http.StatusNoContent)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.InvalidUploadID:
writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// ListObjectPartsHandler - List object parts
func (api Minio) ListObjectPartsHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
objectResourcesMetadata := getObjectResources(req.URL.Query())
if objectResourcesMetadata.MaxParts == 0 {
objectResourcesMetadata.MaxParts = maxPartsList
}
vars := mux.Vars(req)
bucket := vars["bucket"]
object := vars["object"]
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
objectResourcesMetadata, err := api.Donut.ListObjectParts(bucket, object, objectResourcesMetadata, signature)
switch iodine.ToError(err).(type) {
case nil:
{
response := generateListPartsResponse(objectResourcesMetadata)
encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
// write headers
setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
// write body
w.Write(encodedSuccessResponse)
}
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.InvalidUploadID:
writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
// CompleteMultipartUploadHandler - Complete multipart upload
func (api Minio) CompleteMultipartUploadHandler(w http.ResponseWriter, req *http.Request) {
// Ticket master block
{
op := Operation{}
op.ProceedCh = make(chan struct{})
api.OP <- op
// block until Ticket master gives us a go
<-op.ProceedCh
}
acceptsContentType := getContentType(req)
if !api.isValidOp(w, req, acceptsContentType) {
return
}
vars := mux.Vars(req)
bucket := vars["bucket"]
object := vars["object"]
objectResourcesMetadata := getObjectResources(req.URL.Query())
var signature *donut.Signature
if _, ok := req.Header["Authorization"]; ok {
// Init signature V4 verification
var err error
signature, err = InitSignatureV4(req)
if err != nil {
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
return
}
}
metadata, err := api.Donut.CompleteMultipartUpload(bucket, object, objectResourcesMetadata.UploadID, req.Body, signature)
switch iodine.ToError(err).(type) {
case nil:
{
response := generateCompleteMultpartUploadResponse(bucket, object, "", metadata.MD5Sum)
encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
// write headers
setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
// write body
w.Write(encodedSuccessResponse)
}
case donut.InvalidUploadID:
writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
case donut.InvalidPart:
writeErrorResponse(w, req, InvalidPart, acceptsContentType, req.URL.Path)
case donut.InvalidPartOrder:
writeErrorResponse(w, req, InvalidPartOrder, acceptsContentType, req.URL.Path)
case donut.MissingDateHeader:
writeErrorResponse(w, req, RequestTimeTooSkewed, acceptsContentType, req.URL.Path)
case donut.SignatureDoesNotMatch:
writeErrorResponse(w, req, SignatureDoesNotMatch, acceptsContentType, req.URL.Path)
case donut.IncompleteBody:
writeErrorResponse(w, req, IncompleteBody, acceptsContentType, req.URL.Path)
case donut.MalformedXML:
writeErrorResponse(w, req, MalformedXML, acceptsContentType, req.URL.Path)
default:
log.Error.Println(iodine.New(err, nil))
writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
}
}
/// Delete API
// DeleteBucketHandler - Delete bucket
func (api Minio) DeleteBucketHandler(w http.ResponseWriter, req *http.Request) {
error := getErrorCode(NotImplemented)
w.WriteHeader(error.HTTPStatusCode)
}
// DeleteObjectHandler - Delete object
func (api Minio) DeleteObjectHandler(w http.ResponseWriter, req *http.Request) {
error := getErrorCode(NotImplemented)
w.WriteHeader(error.HTTPStatusCode)
}