Migrate this project to minio micro services code
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Harshavardhana
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/*
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* Minio Cloud Storage, (C) 2015 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 main
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import (
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"net/http"
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"github.com/minio/minio/pkg/fs"
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)
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// Reply date format
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const (
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rfcFormat = "2006-01-02T15:04:05.000Z"
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)
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// takes an array of Bucketmetadata information for serialization
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// input:
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// array of bucket metadata
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//
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// output:
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// populated struct that can be serialized to match xml and json api spec output
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func generateListBucketsResponse(buckets []fs.BucketMetadata) 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 = "minio"
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owner.DisplayName = "minio"
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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(rfcFormat)
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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.Bucket = listbuckets
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return data
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}
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// generates an AccessControlPolicy response for the said ACL.
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func generateAccessControlPolicyResponse(acl fs.BucketACL) AccessControlPolicyResponse {
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accessCtrlPolicyResponse := AccessControlPolicyResponse{}
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accessCtrlPolicyResponse.Owner = Owner{
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ID: "minio",
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DisplayName: "minio",
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}
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defaultGrant := Grant{}
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defaultGrant.Grantee.ID = "minio"
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defaultGrant.Grantee.DisplayName = "minio"
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defaultGrant.Permission = "FULL_CONTROL"
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accessCtrlPolicyResponse.AccessControlList.Grant = append(accessCtrlPolicyResponse.AccessControlList.Grant, defaultGrant)
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switch {
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case acl.IsPublicRead():
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publicReadGrant := Grant{}
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publicReadGrant.Grantee.ID = "minio"
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publicReadGrant.Grantee.DisplayName = "minio"
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publicReadGrant.Grantee.URI = "http://acs.amazonaws.com/groups/global/AllUsers"
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publicReadGrant.Permission = "READ"
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accessCtrlPolicyResponse.AccessControlList.Grant = append(accessCtrlPolicyResponse.AccessControlList.Grant, publicReadGrant)
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case acl.IsPublicReadWrite():
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publicReadGrant := Grant{}
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publicReadGrant.Grantee.ID = "minio"
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publicReadGrant.Grantee.DisplayName = "minio"
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publicReadGrant.Grantee.URI = "http://acs.amazonaws.com/groups/global/AllUsers"
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publicReadGrant.Permission = "READ"
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publicReadWriteGrant := Grant{}
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publicReadWriteGrant.Grantee.ID = "minio"
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publicReadWriteGrant.Grantee.DisplayName = "minio"
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publicReadWriteGrant.Grantee.URI = "http://acs.amazonaws.com/groups/global/AllUsers"
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publicReadWriteGrant.Permission = "WRITE"
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accessCtrlPolicyResponse.AccessControlList.Grant = append(accessCtrlPolicyResponse.AccessControlList.Grant, publicReadGrant)
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accessCtrlPolicyResponse.AccessControlList.Grant = append(accessCtrlPolicyResponse.AccessControlList.Grant, publicReadWriteGrant)
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}
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return accessCtrlPolicyResponse
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}
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// generates an ListObjects response for the said bucket with other enumerated options.
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func generateListObjectsResponse(bucket string, objects []fs.ObjectMetadata, bucketResources fs.BucketResourcesMetadata) 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 = "minio"
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owner.DisplayName = "minio"
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for _, object := range objects {
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var content = &Object{}
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if object.Object == "" {
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continue
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}
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content.Key = object.Object
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content.LastModified = object.Created.Format(rfcFormat)
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content.ETag = "\"" + object.Md5 + "\""
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content.Size = object.Size
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content.StorageClass = "STANDARD"
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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.MaxKeys = bucketResources.Maxkeys
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data.Prefix = bucketResources.Prefix
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data.Delimiter = bucketResources.Delimiter
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data.Marker = bucketResources.Marker
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data.NextMarker = bucketResources.NextMarker
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data.IsTruncated = bucketResources.IsTruncated
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for _, prefix := range bucketResources.CommonPrefixes {
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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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// generateInitiateMultipartUploadResponse
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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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// generateCompleteMultipartUploadResponse
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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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// generateListPartsResult
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func generateListPartsResponse(objectMetadata fs.ObjectResourcesMetadata) ListPartsResponse {
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// TODO - support EncodingType in xml decoding
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listPartsResponse := ListPartsResponse{}
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listPartsResponse.Bucket = objectMetadata.Bucket
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listPartsResponse.Key = objectMetadata.Object
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listPartsResponse.UploadID = objectMetadata.UploadID
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listPartsResponse.StorageClass = "STANDARD"
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listPartsResponse.Initiator.ID = "minio"
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listPartsResponse.Initiator.DisplayName = "minio"
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listPartsResponse.Owner.ID = "minio"
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listPartsResponse.Owner.DisplayName = "minio"
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listPartsResponse.MaxParts = objectMetadata.MaxParts
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listPartsResponse.PartNumberMarker = objectMetadata.PartNumberMarker
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listPartsResponse.IsTruncated = objectMetadata.IsTruncated
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listPartsResponse.NextPartNumberMarker = objectMetadata.NextPartNumberMarker
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listPartsResponse.Part = make([]*Part, len(objectMetadata.Part))
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for _, part := range objectMetadata.Part {
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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.Format(rfcFormat)
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listPartsResponse.Part = append(listPartsResponse.Part, newPart)
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}
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return listPartsResponse
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}
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// generateListMultipartUploadsResponse
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func generateListMultipartUploadsResponse(bucket string, metadata fs.BucketMultipartResourcesMetadata) ListMultipartUploadsResponse {
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listMultipartUploadsResponse := ListMultipartUploadsResponse{}
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listMultipartUploadsResponse.Bucket = bucket
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listMultipartUploadsResponse.Delimiter = metadata.Delimiter
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listMultipartUploadsResponse.IsTruncated = metadata.IsTruncated
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listMultipartUploadsResponse.EncodingType = metadata.EncodingType
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listMultipartUploadsResponse.Prefix = metadata.Prefix
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listMultipartUploadsResponse.KeyMarker = metadata.KeyMarker
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listMultipartUploadsResponse.NextKeyMarker = metadata.NextKeyMarker
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listMultipartUploadsResponse.MaxUploads = metadata.MaxUploads
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listMultipartUploadsResponse.NextUploadIDMarker = metadata.NextUploadIDMarker
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listMultipartUploadsResponse.UploadIDMarker = metadata.UploadIDMarker
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listMultipartUploadsResponse.Upload = make([]*Upload, len(metadata.Upload))
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for _, upload := range metadata.Upload {
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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.Format(rfcFormat)
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listMultipartUploadsResponse.Upload = append(listMultipartUploadsResponse.Upload, newUpload)
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}
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return listMultipartUploadsResponse
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}
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// writeSuccessResponse write success headers
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func writeSuccessResponse(w http.ResponseWriter) {
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setCommonHeaders(w, 0)
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w.WriteHeader(http.StatusOK)
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}
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// writeErrorRespone write error headers
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func writeErrorResponse(w http.ResponseWriter, req *http.Request, errorType int, resource string) {
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error := getErrorCode(errorType)
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// generate error response
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errorResponse := getErrorResponse(error, resource)
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encodedErrorResponse := encodeErrorResponse(errorResponse)
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// set common headers
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setCommonHeaders(w, len(encodedErrorResponse))
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// write Header
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w.WriteHeader(error.HTTPStatusCode)
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// HEAD should have no body, do not attempt to write to it
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if req.Method != "HEAD" {
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// write error body
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w.Write(encodedErrorResponse)
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}
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}
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