mirror of
https://github.com/minio/minio.git
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614 lines
20 KiB
Go
614 lines
20 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015, 2016, 2017, 2018 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 cmd
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import (
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"encoding/xml"
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"net/http"
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"net/url"
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"path"
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"time"
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"github.com/minio/minio/pkg/handlers"
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)
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const (
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timeFormatAMZLong = "2006-01-02T15:04:05.000Z" // Reply date format with nanosecond precision.
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maxObjectList = 1000 // Limit number of objects in a listObjectsResponse.
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maxUploadsList = 1000 // Limit number of uploads in a listUploadsResponse.
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maxPartsList = 1000 // Limit number of parts in a listPartsResponse.
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)
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// LocationResponse - format for location response.
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type LocationResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ LocationConstraint" json:"-"`
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Location string `xml:",chardata"`
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}
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// ListObjectsResponse - format for list objects response.
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type ListObjectsResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListBucketResult" json:"-"`
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Name string
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Prefix string
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Marker string
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// When response is truncated (the IsTruncated element value in the response
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// is true), you can use the key name in this field as marker in the subsequent
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// request to get next set of objects. Server lists objects in alphabetical
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// order Note: This element is returned only if you have delimiter request parameter
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// specified. If response does not include the NextMaker and it is truncated,
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// you can use the value of the last Key in the response as the marker in the
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// subsequent request to get the next set of object keys.
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NextMarker string `xml:"NextMarker,omitempty"`
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MaxKeys int
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Delimiter string
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// A flag that indicates whether or not ListObjects returned all of the results
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// that satisfied the search criteria.
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IsTruncated bool
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Contents []Object
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CommonPrefixes []CommonPrefix
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// Encoding type used to encode object keys in the response.
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EncodingType string `xml:"EncodingType,omitempty"`
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}
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// ListObjectsV2Response - format for list objects response.
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type ListObjectsV2Response struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListBucketResult" json:"-"`
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Name string
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Prefix string
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StartAfter string `xml:"StartAfter,omitempty"`
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// When response is truncated (the IsTruncated element value in the response
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// is true), you can use the key name in this field as marker in the subsequent
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// request to get next set of objects. Server lists objects in alphabetical
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// order Note: This element is returned only if you have delimiter request parameter
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// specified. If response does not include the NextMaker and it is truncated,
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// you can use the value of the last Key in the response as the marker in the
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// subsequent request to get the next set of object keys.
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ContinuationToken string `xml:"ContinuationToken,omitempty"`
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NextContinuationToken string `xml:"NextContinuationToken,omitempty"`
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KeyCount int
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MaxKeys int
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Delimiter string
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// A flag that indicates whether or not ListObjects returned all of the results
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// that satisfied the search criteria.
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IsTruncated bool
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Contents []Object
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CommonPrefixes []CommonPrefix
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// Encoding type used to encode object keys in the response.
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EncodingType string `xml:"EncodingType,omitempty"`
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}
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// Part container for part metadata.
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type Part struct {
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PartNumber int
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LastModified string
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ETag string
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Size int64
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}
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// ListPartsResponse - format for list parts response.
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type ListPartsResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListPartsResult" json:"-"`
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Bucket string
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Key string
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UploadID string `xml:"UploadId"`
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Initiator Initiator
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Owner Owner
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// The class of storage used to store the object.
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StorageClass string
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PartNumberMarker int
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NextPartNumberMarker int
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MaxParts int
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IsTruncated bool
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// List of parts.
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Parts []Part `xml:"Part"`
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}
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// ListMultipartUploadsResponse - format for list multipart uploads response.
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type ListMultipartUploadsResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListMultipartUploadsResult" json:"-"`
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Bucket string
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KeyMarker string
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UploadIDMarker string `xml:"UploadIdMarker"`
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NextKeyMarker string
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NextUploadIDMarker string `xml:"NextUploadIdMarker"`
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Delimiter string
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Prefix string
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EncodingType string `xml:"EncodingType,omitempty"`
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MaxUploads int
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IsTruncated bool
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// List of pending uploads.
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Uploads []Upload `xml:"Upload"`
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// Delimed common prefixes.
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CommonPrefixes []CommonPrefix
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}
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// ListBucketsResponse - format for list buckets response
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type ListBucketsResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListAllMyBucketsResult" json:"-"`
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Owner Owner
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// Container for one or more buckets.
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Buckets struct {
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Buckets []Bucket `xml:"Bucket"`
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} // Buckets are nested
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}
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// Upload container for in progress multipart upload
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type Upload struct {
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Key string
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UploadID string `xml:"UploadId"`
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Initiator Initiator
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Owner Owner
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StorageClass string
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Initiated string
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}
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// CommonPrefix container for prefix response in ListObjectsResponse
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type CommonPrefix struct {
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Prefix string
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}
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// Bucket container for bucket metadata
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type Bucket struct {
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Name string
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CreationDate string // time string of format "2006-01-02T15:04:05.000Z"
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}
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// Object container for object metadata
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type Object struct {
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Key string
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LastModified string // time string of format "2006-01-02T15:04:05.000Z"
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ETag string
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Size int64
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// Owner of the object.
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Owner Owner
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// The class of storage used to store the object.
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StorageClass string
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}
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// CopyObjectResponse container returns ETag and LastModified of the successfully copied object
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type CopyObjectResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ CopyObjectResult" json:"-"`
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LastModified string // time string of format "2006-01-02T15:04:05.000Z"
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ETag string // md5sum of the copied object.
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}
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// CopyObjectPartResponse container returns ETag and LastModified of the successfully copied object
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type CopyObjectPartResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ CopyPartResult" json:"-"`
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LastModified string // time string of format "2006-01-02T15:04:05.000Z"
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ETag string // md5sum of the copied object part.
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}
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// Initiator inherit from Owner struct, fields are same
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type Initiator Owner
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// Owner - bucket owner/principal
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type Owner struct {
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ID string
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DisplayName string
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}
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// InitiateMultipartUploadResponse container for InitiateMultiPartUpload response, provides uploadID to start MultiPart upload
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type InitiateMultipartUploadResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ InitiateMultipartUploadResult" json:"-"`
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Bucket string
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Key string
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UploadID string `xml:"UploadId"`
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}
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// CompleteMultipartUploadResponse container for completed multipart upload response
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type CompleteMultipartUploadResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ CompleteMultipartUploadResult" json:"-"`
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Location string
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Bucket string
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Key string
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ETag string
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}
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// DeleteError structure.
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type DeleteError struct {
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Code string
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Message string
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Key string
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}
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// DeleteObjectsResponse container for multiple object deletes.
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type DeleteObjectsResponse struct {
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XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ DeleteResult" json:"-"`
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// Collection of all deleted objects
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DeletedObjects []ObjectIdentifier `xml:"Deleted,omitempty"`
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// Collection of errors deleting certain objects.
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Errors []DeleteError `xml:"Error,omitempty"`
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}
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// PostResponse container for POST object request when success_action_status is set to 201
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type PostResponse struct {
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Bucket string
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Key string
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ETag string
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Location string
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}
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// returns "https" if the tls boolean is true, "http" otherwise.
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func getURLScheme(tls bool) string {
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if tls {
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return httpsScheme
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}
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return httpScheme
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}
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// getObjectLocation gets the fully qualified URL of an object.
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func getObjectLocation(r *http.Request, domain, bucket, object string) string {
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// unit tests do not have host set.
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if r.Host == "" {
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return path.Clean(r.URL.Path)
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}
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proto := handlers.GetSourceScheme(r)
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if proto == "" {
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proto = getURLScheme(globalIsSSL)
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}
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u := &url.URL{
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Host: r.Host,
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Path: path.Join(slashSeparator, bucket, object),
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Scheme: proto,
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}
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// If domain is set then we need to use bucket DNS style.
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if domain != "" {
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u.Host = bucket + "." + domain
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u.Path = path.Join(slashSeparator, object)
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}
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return u.String()
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}
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// generates ListBucketsResponse from array of BucketInfo which can be
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// serialized to match XML and JSON API spec output.
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func generateListBucketsResponse(buckets []BucketInfo) ListBucketsResponse {
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var listbuckets []Bucket
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var data = ListBucketsResponse{}
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var owner = Owner{}
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owner.ID = globalMinioDefaultOwnerID
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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.UTC().Format(timeFormatAMZLong)
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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.Buckets = listbuckets
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return data
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}
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// generates an ListObjectsV1 response for the said bucket with other enumerated options.
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func generateListObjectsV1Response(bucket, prefix, marker, delimiter string, maxKeys int, resp ListObjectsInfo) ListObjectsResponse {
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var contents []Object
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var prefixes []CommonPrefix
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var owner = Owner{}
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var data = ListObjectsResponse{}
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owner.ID = globalMinioDefaultOwnerID
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for _, object := range resp.Objects {
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var content = Object{}
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if object.Name == "" {
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continue
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}
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content.Key = object.Name
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content.LastModified = object.ModTime.UTC().Format(timeFormatAMZLong)
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if object.ETag != "" {
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content.ETag = "\"" + object.ETag + "\""
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}
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content.Size = object.Size
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content.StorageClass = object.StorageClass
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content.Owner = owner
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contents = append(contents, content)
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}
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// TODO - support EncodingType in xml decoding
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data.Name = bucket
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data.Contents = contents
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data.Prefix = prefix
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data.Marker = marker
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data.Delimiter = delimiter
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data.MaxKeys = maxKeys
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data.NextMarker = resp.NextMarker
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data.IsTruncated = resp.IsTruncated
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for _, prefix := range resp.Prefixes {
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var prefixItem = CommonPrefix{}
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prefixItem.Prefix = prefix
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prefixes = append(prefixes, prefixItem)
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}
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data.CommonPrefixes = prefixes
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return data
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}
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// generates an ListObjectsV2 response for the said bucket with other enumerated options.
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func generateListObjectsV2Response(bucket, prefix, token, nextToken, startAfter, delimiter string, fetchOwner, isTruncated bool, maxKeys int, objects []ObjectInfo, prefixes []string) ListObjectsV2Response {
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var contents []Object
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var commonPrefixes []CommonPrefix
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var owner = Owner{}
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var data = ListObjectsV2Response{}
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if fetchOwner {
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owner.ID = globalMinioDefaultOwnerID
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}
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for _, object := range objects {
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var content = Object{}
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if object.Name == "" {
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continue
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}
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content.Key = object.Name
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content.LastModified = object.ModTime.UTC().Format(timeFormatAMZLong)
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if object.ETag != "" {
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content.ETag = "\"" + object.ETag + "\""
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}
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content.Size = object.Size
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content.StorageClass = object.StorageClass
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content.Owner = owner
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contents = append(contents, content)
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}
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// TODO - support EncodingType in xml decoding
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data.Name = bucket
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data.Contents = contents
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data.StartAfter = startAfter
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data.Delimiter = delimiter
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data.Prefix = prefix
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data.MaxKeys = maxKeys
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data.ContinuationToken = token
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data.NextContinuationToken = nextToken
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data.IsTruncated = isTruncated
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for _, prefix := range prefixes {
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var prefixItem = CommonPrefix{}
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prefixItem.Prefix = prefix
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commonPrefixes = append(commonPrefixes, prefixItem)
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}
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data.CommonPrefixes = commonPrefixes
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data.KeyCount = len(data.Contents) + len(data.CommonPrefixes)
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return data
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}
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// generates CopyObjectResponse from etag and lastModified time.
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func generateCopyObjectResponse(etag string, lastModified time.Time) CopyObjectResponse {
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return CopyObjectResponse{
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ETag: "\"" + etag + "\"",
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LastModified: lastModified.UTC().Format(timeFormatAMZLong),
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}
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}
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// generates CopyObjectPartResponse from etag and lastModified time.
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func generateCopyObjectPartResponse(etag string, lastModified time.Time) CopyObjectPartResponse {
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return CopyObjectPartResponse{
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ETag: "\"" + etag + "\"",
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LastModified: lastModified.UTC().Format(timeFormatAMZLong),
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}
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}
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// generates InitiateMultipartUploadResponse for given bucket, key and uploadID.
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func generateInitiateMultipartUploadResponse(bucket, key, uploadID string) InitiateMultipartUploadResponse {
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return InitiateMultipartUploadResponse{
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Bucket: bucket,
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Key: key,
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UploadID: uploadID,
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}
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}
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// generates CompleteMultipartUploadResponse for given bucket, key, location and ETag.
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func generateCompleteMultpartUploadResponse(bucket, key, location, etag string) CompleteMultipartUploadResponse {
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return CompleteMultipartUploadResponse{
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Location: location,
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Bucket: bucket,
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Key: key,
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ETag: etag,
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}
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}
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// generates ListPartsResponse from ListPartsInfo.
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func generateListPartsResponse(partsInfo ListPartsInfo) ListPartsResponse {
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// TODO - support EncodingType in xml decoding
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listPartsResponse := ListPartsResponse{}
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listPartsResponse.Bucket = partsInfo.Bucket
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listPartsResponse.Key = partsInfo.Object
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listPartsResponse.UploadID = partsInfo.UploadID
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listPartsResponse.StorageClass = globalMinioDefaultStorageClass
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listPartsResponse.Initiator.ID = globalMinioDefaultOwnerID
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listPartsResponse.Owner.ID = globalMinioDefaultOwnerID
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listPartsResponse.MaxParts = partsInfo.MaxParts
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listPartsResponse.PartNumberMarker = partsInfo.PartNumberMarker
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listPartsResponse.IsTruncated = partsInfo.IsTruncated
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listPartsResponse.NextPartNumberMarker = partsInfo.NextPartNumberMarker
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listPartsResponse.Parts = make([]Part, len(partsInfo.Parts))
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for index, part := range partsInfo.Parts {
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newPart := Part{}
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newPart.PartNumber = part.PartNumber
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newPart.ETag = "\"" + part.ETag + "\""
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newPart.Size = part.Size
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newPart.LastModified = part.LastModified.UTC().Format(timeFormatAMZLong)
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listPartsResponse.Parts[index] = newPart
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}
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return listPartsResponse
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}
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// generates ListMultipartUploadsResponse for given bucket and ListMultipartsInfo.
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func generateListMultipartUploadsResponse(bucket string, multipartsInfo ListMultipartsInfo) ListMultipartUploadsResponse {
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listMultipartUploadsResponse := ListMultipartUploadsResponse{}
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listMultipartUploadsResponse.Bucket = bucket
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listMultipartUploadsResponse.Delimiter = multipartsInfo.Delimiter
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listMultipartUploadsResponse.IsTruncated = multipartsInfo.IsTruncated
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listMultipartUploadsResponse.EncodingType = multipartsInfo.EncodingType
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listMultipartUploadsResponse.Prefix = multipartsInfo.Prefix
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listMultipartUploadsResponse.KeyMarker = multipartsInfo.KeyMarker
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listMultipartUploadsResponse.NextKeyMarker = multipartsInfo.NextKeyMarker
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listMultipartUploadsResponse.MaxUploads = multipartsInfo.MaxUploads
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listMultipartUploadsResponse.NextUploadIDMarker = multipartsInfo.NextUploadIDMarker
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listMultipartUploadsResponse.UploadIDMarker = multipartsInfo.UploadIDMarker
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listMultipartUploadsResponse.CommonPrefixes = make([]CommonPrefix, len(multipartsInfo.CommonPrefixes))
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for index, commonPrefix := range multipartsInfo.CommonPrefixes {
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listMultipartUploadsResponse.CommonPrefixes[index] = CommonPrefix{
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Prefix: commonPrefix,
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}
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}
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listMultipartUploadsResponse.Uploads = make([]Upload, len(multipartsInfo.Uploads))
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for index, upload := range multipartsInfo.Uploads {
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newUpload := Upload{}
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newUpload.UploadID = upload.UploadID
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newUpload.Key = upload.Object
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newUpload.Initiated = upload.Initiated.UTC().Format(timeFormatAMZLong)
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listMultipartUploadsResponse.Uploads[index] = newUpload
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}
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return listMultipartUploadsResponse
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}
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// generate multi objects delete response.
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func generateMultiDeleteResponse(quiet bool, deletedObjects []ObjectIdentifier, errs []DeleteError) DeleteObjectsResponse {
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deleteResp := DeleteObjectsResponse{}
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if !quiet {
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deleteResp.DeletedObjects = deletedObjects
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}
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deleteResp.Errors = errs
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return deleteResp
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}
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func writeResponse(w http.ResponseWriter, statusCode int, response []byte, mType mimeType) {
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setCommonHeaders(w)
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if mType != mimeNone {
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w.Header().Set("Content-Type", string(mType))
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}
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w.WriteHeader(statusCode)
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if response != nil {
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w.Write(response)
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w.(http.Flusher).Flush()
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}
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}
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// mimeType represents various MIME type used API responses.
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type mimeType string
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|
const (
|
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// Means no response type.
|
|
mimeNone mimeType = ""
|
|
// Means response type is JSON.
|
|
mimeJSON mimeType = "application/json"
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|
// Means response type is XML.
|
|
mimeXML mimeType = "application/xml"
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|
)
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|
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// writeSuccessResponseJSON writes success headers and response if any,
|
|
// with content-type set to `application/json`.
|
|
func writeSuccessResponseJSON(w http.ResponseWriter, response []byte) {
|
|
writeResponse(w, http.StatusOK, response, mimeJSON)
|
|
}
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|
|
|
// writeSuccessResponseXML writes success headers and response if any,
|
|
// with content-type set to `application/xml`.
|
|
func writeSuccessResponseXML(w http.ResponseWriter, response []byte) {
|
|
writeResponse(w, http.StatusOK, response, mimeXML)
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|
}
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|
|
|
// writeSuccessNoContent writes success headers with http status 204
|
|
func writeSuccessNoContent(w http.ResponseWriter) {
|
|
writeResponse(w, http.StatusNoContent, nil, mimeNone)
|
|
}
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|
|
|
// writeRedirectSeeOther writes Location header with http status 303
|
|
func writeRedirectSeeOther(w http.ResponseWriter, location string) {
|
|
w.Header().Set("Location", location)
|
|
writeResponse(w, http.StatusSeeOther, nil, mimeNone)
|
|
}
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|
|
|
func writeSuccessResponseHeadersOnly(w http.ResponseWriter) {
|
|
writeResponse(w, http.StatusOK, nil, mimeNone)
|
|
}
|
|
|
|
// writeErrorRespone writes error headers
|
|
func writeErrorResponse(w http.ResponseWriter, errorCode APIErrorCode, reqURL *url.URL) {
|
|
switch errorCode {
|
|
case ErrSlowDown, ErrServerNotInitialized, ErrReadQuorum, ErrWriteQuorum:
|
|
// Set retry-after header to indicate user-agents to retry request after 120secs.
|
|
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After
|
|
w.Header().Set("Retry-After", "120")
|
|
}
|
|
apiError := getAPIError(errorCode)
|
|
// Generate error response.
|
|
errorResponse := getAPIErrorResponse(apiError, reqURL.Path)
|
|
encodedErrorResponse := encodeResponse(errorResponse)
|
|
writeResponse(w, apiError.HTTPStatusCode, encodedErrorResponse, mimeXML)
|
|
}
|
|
|
|
func writeErrorResponseHeadersOnly(w http.ResponseWriter, errorCode APIErrorCode) {
|
|
apiError := getAPIError(errorCode)
|
|
writeResponse(w, apiError.HTTPStatusCode, nil, mimeNone)
|
|
}
|
|
|
|
// writeErrorResponseJSON - writes error response in JSON format;
|
|
// useful for admin APIs.
|
|
func writeErrorResponseJSON(w http.ResponseWriter, errorCode APIErrorCode, reqURL *url.URL) {
|
|
apiError := getAPIError(errorCode)
|
|
// Generate error response.
|
|
errorResponse := getAPIErrorResponse(apiError, reqURL.Path)
|
|
encodedErrorResponse := encodeResponseJSON(errorResponse)
|
|
writeResponse(w, apiError.HTTPStatusCode, encodedErrorResponse, mimeJSON)
|
|
}
|
|
|
|
// writeCustomErrorResponseJSON - similar to writeErrorResponseJSON,
|
|
// but accepts the error message directly (this allows messages to be
|
|
// dynamically generated.)
|
|
func writeCustomErrorResponseJSON(w http.ResponseWriter, errorCode APIErrorCode,
|
|
errBody string, reqURL *url.URL) {
|
|
|
|
apiError := getAPIError(errorCode)
|
|
errorResponse := APIErrorResponse{
|
|
Code: apiError.Code,
|
|
Message: errBody,
|
|
Resource: reqURL.Path,
|
|
RequestID: "3L137",
|
|
HostID: "3L137",
|
|
}
|
|
encodedErrorResponse := encodeResponseJSON(errorResponse)
|
|
writeResponse(w, apiError.HTTPStatusCode, encodedErrorResponse, mimeJSON)
|
|
}
|