155a90403a
This PR also does backend format change to 1.0.1 from 1.0.0. Backward compatible changes are still kept to read the 'md5Sum' key. But all new objects will be stored with the same details under 'etag'. Fixes #4312
572 lines
19 KiB
Go
572 lines
19 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015, 2016, 2017 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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)
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const (
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timeFormatAMZ = "2006-01-02T15:04:05Z" // Reply date format
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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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HealUploadInfo *HealObjectInfo `xml:"HealObjectInfo,omitempty"`
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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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HealBucketInfo *HealBucketInfo `xml:"HealBucketInfo,omitempty"`
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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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HealObjectInfo *HealObjectInfo `xml:"HealObjectInfo,omitempty"`
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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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// getLocation get URL location.
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func getLocation(r *http.Request) string {
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return path.Clean(r.URL.Path) // Clean any trailing slashes.
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}
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// getObjectLocation gets the relative URL for an object
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func getObjectLocation(bucketName string, key string) string {
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return "/" + bucketName + "/" + key
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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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owner.DisplayName = 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.Format(timeFormatAMZLong)
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listbucket.HealBucketInfo = bucket.HealBucketInfo
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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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owner.DisplayName = 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 = globalMinioDefaultStorageClass
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content.Owner = owner
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// object.HealObjectInfo is non-empty only when resp is constructed in ListObjectsHeal.
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content.HealObjectInfo = object.HealObjectInfo
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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, startAfter, delimiter string, fetchOwner bool, maxKeys int, resp ListObjectsInfo) ListObjectsV2Response {
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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 = ListObjectsV2Response{}
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if fetchOwner {
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owner.ID = globalMinioDefaultOwnerID
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owner.DisplayName = globalMinioDefaultOwnerID
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}
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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 = globalMinioDefaultStorageClass
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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 = 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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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.Initiator.DisplayName = globalMinioDefaultOwnerID
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listPartsResponse.Owner.ID = globalMinioDefaultOwnerID
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listPartsResponse.Owner.DisplayName = 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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newUpload.HealUploadInfo = upload.HealUploadInfo
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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.
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mimeNone mimeType = ""
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// Means response type is JSON.
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mimeJSON mimeType = "application/json"
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// Means response type is XML.
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mimeXML mimeType = "application/xml"
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)
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// writeSuccessResponseJSON writes success headers and response if any,
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// with content-type set to `application/json`.
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func writeSuccessResponseJSON(w http.ResponseWriter, response []byte) {
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writeResponse(w, http.StatusOK, response, mimeJSON)
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}
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// writeSuccessResponseXML writes success headers and response if any,
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// with content-type set to `application/xml`.
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func writeSuccessResponseXML(w http.ResponseWriter, response []byte) {
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writeResponse(w, http.StatusOK, response, mimeXML)
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}
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// writeSuccessNoContent writes success headers with http status 204
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func writeSuccessNoContent(w http.ResponseWriter) {
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writeResponse(w, http.StatusNoContent, nil, mimeNone)
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}
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// writeRedirectSeeOther writes Location header with http status 303
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func writeRedirectSeeOther(w http.ResponseWriter, location string) {
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w.Header().Set("Location", location)
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writeResponse(w, http.StatusSeeOther, nil, mimeNone)
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}
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func writeSuccessResponseHeadersOnly(w http.ResponseWriter) {
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writeResponse(w, http.StatusOK, nil, mimeNone)
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}
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// writeErrorRespone writes error headers
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func writeErrorResponse(w http.ResponseWriter, errorCode APIErrorCode, reqURL *url.URL) {
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apiError := getAPIError(errorCode)
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// Generate error response.
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errorResponse := getAPIErrorResponse(apiError, reqURL.Path)
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encodedErrorResponse := encodeResponse(errorResponse)
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writeResponse(w, apiError.HTTPStatusCode, encodedErrorResponse, mimeXML)
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}
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func writeErrorResponseHeadersOnly(w http.ResponseWriter, errorCode APIErrorCode) {
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apiError := getAPIError(errorCode)
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writeResponse(w, apiError.HTTPStatusCode, nil, mimeNone)
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}
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