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	This PR is for readability cleanup - getOrderedDisks as shuffleDisks - getOrderedPartsMetadata as shufflePartsMetadata Distribution is now a second argument instead being the primary input argument for brevity. Also change the usage of type casted int64(0), instead rely on direct type reference as `var variable int64` everywhere.
		
			
				
	
	
		
			128 lines
		
	
	
		
			4.0 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			128 lines
		
	
	
		
			4.0 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
/*
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 * Minio Cloud Storage, (C) 2016 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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	"fmt"
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	"io/ioutil"
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	"net"
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	"net/http"
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	. "gopkg.in/check.v1"
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)
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// concurreny level for certain parallel tests.
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const (
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	testConcurrencyLevel = 10
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)
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///
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/// Excerpts from @lsegal - https://github.com/aws/aws-sdk-js/issues/659#issuecomment-120477258
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///
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///  User-Agent:
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///
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///      This is ignored from signing because signing this causes problems with generating pre-signed URLs
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///      (that are executed by other agents) or when customers pass requests through proxies, which may
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///      modify the user-agent.
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///
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///  Content-Length:
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///
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///      This is ignored from signing because generating a pre-signed URL should not provide a content-length
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///      constraint, specifically when vending a S3 pre-signed PUT URL. The corollary to this is that when
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///      sending regular requests (non-pre-signed), the signature contains a checksum of the body, which
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///      implicitly validates the payload length (since changing the number of bytes would change the checksum)
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///      and therefore this header is not valuable in the signature.
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///
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///  Content-Type:
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///
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///      Signing this header causes quite a number of problems in browser environments, where browsers
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///      like to modify and normalize the content-type header in different ways. There is more information
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///      on this in https://github.com/aws/aws-sdk-js/issues/244. Avoiding this field simplifies logic
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///      and reduces the possibility of future bugs
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///
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///  Authorization:
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///
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///      Is skipped for obvious reasons
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///
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var ignoredHeaders = map[string]bool{
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	"Authorization":  true,
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	"Content-Type":   true,
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	"Content-Length": true,
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	"User-Agent":     true,
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}
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// Headers to ignore in streaming v4
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var ignoredStreamingHeaders = map[string]bool{
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	"Authorization": true,
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	"Content-Type":  true,
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	"Content-Md5":   true,
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	"User-Agent":    true,
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}
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// calculateSignedChunkLength - calculates the length of chunk metadata
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func calculateSignedChunkLength(chunkDataSize int64) int64 {
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	return int64(len(fmt.Sprintf("%x", chunkDataSize))) +
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		17 + // ";chunk-signature="
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		64 + // e.g. "f2ca1bb6c7e907d06dafe4687e579fce76b37e4e93b7605022da52e6ccc26fd2"
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		2 + // CRLF
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		chunkDataSize +
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		2 // CRLF
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}
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// calculateSignedChunkLength - calculates the length of the overall stream (data + metadata)
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func calculateStreamContentLength(dataLen, chunkSize int64) int64 {
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	if dataLen <= 0 {
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		return 0
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	}
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	chunksCount := int64(dataLen / chunkSize)
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	remainingBytes := int64(dataLen % chunkSize)
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	var streamLen int64
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	streamLen += chunksCount * calculateSignedChunkLength(chunkSize)
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	if remainingBytes > 0 {
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		streamLen += calculateSignedChunkLength(remainingBytes)
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	}
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	streamLen += calculateSignedChunkLength(0)
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	return streamLen
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}
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// Ask the kernel for a free open port.
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func getFreePort() string {
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	addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
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	if err != nil {
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		panic(err)
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	}
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	l, err := net.ListenTCP("tcp", addr)
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	if err != nil {
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		panic(err)
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	}
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	defer l.Close()
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	return fmt.Sprintf("%d", l.Addr().(*net.TCPAddr).Port)
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}
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func verifyError(c *C, response *http.Response, code, description string, statusCode int) {
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	data, err := ioutil.ReadAll(response.Body)
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	c.Assert(err, IsNil)
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	errorResponse := APIErrorResponse{}
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	err = xml.Unmarshal(data, &errorResponse)
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	c.Assert(err, IsNil)
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	c.Assert(errorResponse.Code, Equals, code)
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	c.Assert(errorResponse.Message, Equals, description)
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	c.Assert(response.StatusCode, Equals, statusCode)
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}
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