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
82 lines
2.4 KiB
Go
82 lines
2.4 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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"bytes"
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"encoding/xml"
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"fmt"
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"net/http"
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"strconv"
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"time"
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)
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// Returns a hexadecimal representation of time at the
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// time response is sent to the client.
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func mustGetRequestID(t time.Time) string {
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return fmt.Sprintf("%X", t.UnixNano())
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}
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// Write http common headers
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func setCommonHeaders(w http.ResponseWriter) {
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// Set unique request ID for each reply.
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w.Header().Set(responseRequestIDKey, mustGetRequestID(UTCNow()))
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w.Header().Set("Server", globalServerUserAgent)
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w.Header().Set("X-Amz-Bucket-Region", serverConfig.GetRegion())
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w.Header().Set("Accept-Ranges", "bytes")
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}
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// Encodes the response headers into XML format.
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func encodeResponse(response interface{}) []byte {
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var bytesBuffer bytes.Buffer
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bytesBuffer.WriteString(xml.Header)
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e := xml.NewEncoder(&bytesBuffer)
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e.Encode(response)
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return bytesBuffer.Bytes()
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}
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// Write object header
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func setObjectHeaders(w http.ResponseWriter, objInfo ObjectInfo, contentRange *httpRange) {
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// set common headers
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setCommonHeaders(w)
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// Set content length.
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w.Header().Set("Content-Length", strconv.FormatInt(objInfo.Size, 10))
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// Set last modified time.
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lastModified := objInfo.ModTime.UTC().Format(http.TimeFormat)
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w.Header().Set("Last-Modified", lastModified)
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// Set Etag if available.
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if objInfo.ETag != "" {
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w.Header().Set("ETag", "\""+objInfo.ETag+"\"")
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}
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// Set all other user defined metadata.
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for k, v := range objInfo.UserDefined {
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w.Header().Set(k, v)
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}
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// for providing ranged content
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if contentRange != nil && contentRange.offsetBegin > -1 {
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// Override content-length
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w.Header().Set("Content-Length", strconv.FormatInt(contentRange.getLength(), 10))
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w.Header().Set("Content-Range", contentRange.String())
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w.WriteHeader(http.StatusPartialContent)
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}
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}
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