Update s3 bindings

The S3 library has made a few fixes to the retry logic. Updating the bindings
accordingly.

Signed-off-by: Stephen J Day <stephen.day@docker.com>

Godeps/Godeps.json

@@ -7,15 +7,15 @@
 	"Deps": [
 		{
 			"ImportPath": "github.com/AdRoll/goamz/aws",
-			"Rev": "cc210f45dcb9889c2769a274522be2bf70edfb99"
+			"Rev": "f8c4952d5bc3056c0ca6711a1f56bc88b828d989"
 		},
 		{
 			"ImportPath": "github.com/AdRoll/goamz/cloudfront",
-			"Rev": "cc210f45dcb9889c2769a274522be2bf70edfb99"
+			"Rev": "f8c4952d5bc3056c0ca6711a1f56bc88b828d989"
 		},
 		{
 			"ImportPath": "github.com/AdRoll/goamz/s3",
-			"Rev": "cc210f45dcb9889c2769a274522be2bf70edfb99"
+			"Rev": "f8c4952d5bc3056c0ca6711a1f56bc88b828d989"
 		},
 		{
 			"ImportPath": "github.com/Azure/azure-sdk-for-go/storage",

Godeps/_workspace/src/github.com/AdRoll/goamz/aws/sign.go

@@ -75,19 +75,6 @@ func NewRoute53Signer(auth Auth) *Route53Signer {
 	return &Route53Signer{auth: auth}
 }
 
-// getCurrentDate fetches the date stamp from the aws servers to
-// ensure the auth headers are within 5 minutes of the server time
-func (s *Route53Signer) getCurrentDate() string {
-	response, err := http.Get("https://route53.amazonaws.com/date")
-	if err != nil {
-		fmt.Print("Unable to get date from amazon: ", err)
-		return ""
-	}
-
-	response.Body.Close()
-	return response.Header.Get("Date")
-}
-
 // Creates the authorize signature based on the date stamp and secret key
 func (s *Route53Signer) getHeaderAuthorize(message string) string {
 	hmacSha256 := hmac.New(sha256.New, []byte(s.auth.SecretKey))
@@ -100,16 +87,18 @@ func (s *Route53Signer) getHeaderAuthorize(message string) string {
 // Adds all the required headers for AWS Route53 API to the request
 // including the authorization
 func (s *Route53Signer) Sign(req *http.Request) {
-	date := s.getCurrentDate()
+	date := time.Now().UTC().Format(time.RFC1123)
+	delete(req.Header, "Date")
+	req.Header.Set("Date", date)
+
 	authHeader := fmt.Sprintf("AWS3-HTTPS AWSAccessKeyId=%s,Algorithm=%s,Signature=%s",
 		s.auth.AccessKey, "HmacSHA256", s.getHeaderAuthorize(date))
 
 	req.Header.Set("Host", req.Host)
 	req.Header.Set("X-Amzn-Authorization", authHeader)
-	req.Header.Set("X-Amz-Date", date)
 	req.Header.Set("Content-Type", "application/xml")
 	if s.auth.Token() != "" {
-		req.Header.Set("X-Amzn-Security-Token", s.auth.Token())
+		req.Header.Set("X-Amz-Security-Token", s.auth.Token())
 	}
 }
 

Godeps/_workspace/src/github.com/AdRoll/goamz/s3/multi.go

@@ -394,6 +394,14 @@ func (p completeParts) Len() int           { return len(p) }
 func (p completeParts) Less(i, j int) bool { return p[i].PartNumber < p[j].PartNumber }
 func (p completeParts) Swap(i, j int)      { p[i], p[j] = p[j], p[i] }
 
+// We can't know in advance whether we'll have an Error or a
+// CompleteMultipartUploadResult, so this structure is just a placeholder to
+// know the name of the XML object.
+type completeUploadResp struct {
+	XMLName  xml.Name
+	InnerXML string `xml:",innerxml"`
+}
+
 // Complete assembles the given previously uploaded parts into the
 // final object. This operation may take several minutes.
 //
@@ -419,11 +427,41 @@ func (m *Multi) Complete(parts []Part) error {
 			params:  params,
 			payload: bytes.NewReader(data),
 		}
-		err := m.Bucket.S3.query(req, nil)
+		var resp completeUploadResp
+		err := m.Bucket.S3.query(req, &resp)
 		if shouldRetry(err) && attempt.HasNext() {
 			continue
 		}
-		return err
+
+		if err != nil {
+			return err
+		}
+
+		// A 200 error code does not guarantee that there were no errors (see
+		// http://docs.aws.amazon.com/AmazonS3/latest/API/mpUploadComplete.html ),
+		// so first figure out what kind of XML "object" we are dealing with.
+
+		if resp.XMLName.Local == "Error" {
+			// S3.query does the unmarshalling for us, so we can't unmarshal
+			// again in a different struct... So we need to duct-tape back the
+			// original XML back together.
+			fullErrorXml := "<Error>" + resp.InnerXML + "</Error>"
+			s3err := &Error{}
+
+			if err := xml.Unmarshal([]byte(fullErrorXml), s3err); err != nil {
+				return err
+			}
+
+			return s3err
+		}
+
+		if resp.XMLName.Local == "CompleteMultipartUploadResult" {
+			// FIXME: One could probably add a CompleteFull method returning the
+			// actual contents of the CompleteMultipartUploadResult object.
+			return nil
+		}
+
+		return errors.New("Invalid XML struct returned: " + resp.XMLName.Local)
 	}
 	panic("unreachable")
 }

Godeps/_workspace/src/github.com/AdRoll/goamz/s3/multi_test.go

@@ -343,10 +343,7 @@ func (s *S) TestPutAllResume(c *check.C) {
 
 func (s *S) TestMultiComplete(c *check.C) {
 	testServer.Response(200, nil, InitMultiResultDump)
-	// Note the 200 response. Completing will hold the connection on some
+	testServer.Response(200, nil, MultiCompleteDump)
-	// kind of long poll, and may return a late error even after a 200.
-	testServer.Response(200, nil, InternalErrorDump)
-	testServer.Response(200, nil, "")
 
 	b := s.s3.Bucket("sample")
 
@@ -382,6 +379,24 @@ func (s *S) TestMultiComplete(c *check.C) {
 	c.Assert(payload.Part[1].ETag, check.Equals, `"ETag2"`)
 }
 
+func (s *S) TestMultiCompleteError(c *check.C) {
+	testServer.Response(200, nil, InitMultiResultDump)
+	// Note the 200 response. Completing will hold the connection on some
+	// kind of long poll, and may return a late error even after a 200.
+	testServer.Response(200, nil, InternalErrorDump)
+
+	b := s.s3.Bucket("sample")
+
+	multi, err := b.InitMulti("multi", "text/plain", s3.Private, s3.Options{})
+	c.Assert(err, check.IsNil)
+
+	err = multi.Complete([]s3.Part{{2, `"ETag2"`, 32}, {1, `"ETag1"`, 64}})
+	c.Assert(err, check.NotNil)
+
+	testServer.WaitRequest()
+	testServer.WaitRequest()
+}
+
 func (s *S) TestMultiAbort(c *check.C) {
 	testServer.Response(200, nil, InitMultiResultDump)
 	testServer.Response(200, nil, "")

Godeps/_workspace/src/github.com/AdRoll/goamz/s3/responses_test.go

@@ -194,6 +194,15 @@ var NoSuchUploadErrorDump = `
 </Error>
 `
 
+var MultiCompleteDump = `
+<CompleteMultipartUploadResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
+  <Location>http://Example-Bucket.s3.amazonaws.com/Example-Object</Location>
+  <Bucket>Example-Bucket</Bucket>
+  <Key>Example-Object</Key>
+  <ETag>"3858f62230ac3c915f300c664312c11f-9"</ETag>
+</CompleteMultipartUploadResult>
+`
+
 var InternalErrorDump = `
 <?xml version="1.0" encoding="UTF-8"?>
 <Error>

Godeps/_workspace/src/github.com/AdRoll/goamz/s3/s3.go

@@ -850,7 +850,15 @@ func (b *Bucket) UploadSignedURL(name, method, content_type string, expires time
 	signature := base64.StdEncoding.EncodeToString([]byte(macsum))
 	signature = strings.TrimSpace(signature)
 
-	signedurl, err := url.Parse("https://" + b.Name + ".s3.amazonaws.com/")
+	var signedurl *url.URL
+	var err error
+	if b.Region.S3Endpoint != "" {
+		signedurl, err = url.Parse(b.Region.S3Endpoint)
+		name = b.Name + "/" + name
+	} else {
+		signedurl, err = url.Parse("https://" + b.Name + ".s3.amazonaws.com/")
+	}
+
 	if err != nil {
 		log.Println("ERROR sining url for S3 upload", err)
 		return ""
@@ -1243,7 +1251,7 @@ func shouldRetry(err error) bool {
 		return true
 	case *net.OpError:
 		switch e.Op {
-		case "read", "write":
+		case "dial", "read", "write":
 			return true
 		}
 	case *url.Error:
@@ -1252,7 +1260,14 @@ func shouldRetry(err error) bool {
 		// are received or parsed correctly. In that later case, e.Op is set to
 		// the HTTP method name with the first letter uppercased. We don't want
 		// to retry on POST operations, since those are not idempotent, all the
-		// other ones should be safe to retry.
+		// other ones should be safe to retry. The only case where all
+		// operations are safe to retry are "dial" errors, since in that case
+		// the POST request didn't make it to the server.
+
+		if netErr, ok := e.Err.(*net.OpError); ok && netErr.Op == "dial" {
+			return true
+		}
+
 		switch e.Op {
 		case "Get", "Put", "Delete", "Head":
 			return shouldRetry(e.Err)
@@ -1264,6 +1279,10 @@ func shouldRetry(err error) bool {
 		case "InternalError", "NoSuchUpload", "NoSuchBucket":
 			return true
 		}
+		switch e.StatusCode {
+		case 500, 503, 504:
+			return true
+		}
 	}
 	return false
 }

Godeps/_workspace/src/github.com/AdRoll/goamz/s3/s3i_test.go

@@ -456,7 +456,11 @@ func (s *ClientTests) TestMultiComplete(c *check.C) {
 	err := b.PutBucket(s3.Private)
 	c.Assert(err, check.IsNil)
 
-	multi, err := b.InitMulti("multi", "text/plain", s3.Private, s3.Options{})
+	contentType := "text/plain"
+	meta := make(map[string][]string)
+	meta["X-Amz-Meta-TestField"] = []string{"testValue"}
+	options := s3.Options{ContentEncoding: "identity", ContentDisposition: "inline", Meta: meta}
+	multi, err := b.InitMulti("multi", contentType, s3.Private, options)
 	c.Assert(err, check.IsNil)
 	c.Assert(multi.UploadId, check.Matches, ".+")
 	defer multi.Abort()
@@ -484,6 +488,16 @@ func (s *ClientTests) TestMultiComplete(c *check.C) {
 		}
 	}
 	c.Assert(string(data[len(data1):]), check.Equals, string(data2))
+
+	resp, err := b.GetResponse("multi")
+	c.Assert(resp.Header.Get("Content-Type"), check.Equals, contentType)
+	c.Assert(resp.Header.Get("x-amz-acl"), check.Equals, s3.Private)
+	c.Assert(resp.Header.Get("Content-MD5"), check.Equals, options.ContentMD5)
+	c.Assert(resp.Header.Get("Content-Encoding"), check.Equals, options.ContentEncoding)
+	c.Assert(resp.Header.Get("Content-Disposition"), check.Equals, options.ContentDisposition)
+	for k, values := range meta {
+		c.Assert(resp.Header.Get(k), check.Equals, strings.Join(values, ","))
+	}
 }
 
 type multiList []*s3.Multi

Godeps/_workspace/src/github.com/AdRoll/goamz/s3/s3t_test.go

@@ -4,6 +4,7 @@ import (
 	"github.com/AdRoll/goamz/aws"
 	"github.com/AdRoll/goamz/s3"
 	"github.com/AdRoll/goamz/s3/s3test"
+	"github.com/AdRoll/goamz/testutil"
 	"gopkg.in/check.v1"
 )
 
@@ -77,3 +78,10 @@ func (s *LocalServerSuite) TestBucketList(c *check.C) {
 func (s *LocalServerSuite) TestDoublePutBucket(c *check.C) {
 	s.clientTests.TestDoublePutBucket(c)
 }
+
+func (s *LocalServerSuite) TestMultiComplete(c *check.C) {
+	if !testutil.Amazon {
+		c.Skip("live tests against AWS disabled (no -amazon)")
+	}
+	s.clientTests.TestMultiComplete(c)
+}

Godeps/_workspace/src/github.com/AdRoll/goamz/s3/s3test/server.go

@@ -25,6 +25,8 @@ import (
 
 const debug = false
 
+var rangePattern = regexp.MustCompile(`^bytes=([\d]*)-([\d]*)$`)
+
 type s3Error struct {
 	statusCode int
 	XMLName    struct{} `xml:"Error"`
@@ -82,6 +84,7 @@ type bucket struct {
 	ctime            time.Time
 	objects          map[string]*object
 	multipartUploads map[string][]*multipartUploadPart
+	multipartMeta    map[string]http.Header
 }
 
 type object struct {
@@ -93,11 +96,26 @@ type object struct {
 }
 
 type multipartUploadPart struct {
+	index        uint
 	data         []byte
 	etag         string
 	lastModified time.Time
 }
 
+type multipartUploadPartByIndex []*multipartUploadPart
+
+func (x multipartUploadPartByIndex) Len() int {
+	return len(x)
+}
+
+func (x multipartUploadPartByIndex) Swap(i, j int) {
+	x[i], x[j] = x[j], x[i]
+}
+
+func (x multipartUploadPartByIndex) Less(i, j int) bool {
+	return x[i].index < x[j].index
+}
+
 // A resource encapsulates the subject of an HTTP request.
 // The resource referred to may or may not exist
 // when the request is made.
@@ -438,6 +456,7 @@ func (r bucketResource) put(a *action) interface{} {
 			// TODO default acl
 			objects:          make(map[string]*object),
 			multipartUploads: make(map[string][]*multipartUploadPart),
+			multipartMeta:    make(map[string]http.Header),
 		}
 		a.srv.buckets[r.name] = r.bucket
 		created = true
@@ -592,8 +611,33 @@ func (objr objectResource) get(a *action) interface{} {
 			h.Set(name, vals[0])
 		}
 	}
+
+	data := obj.data
+	status := http.StatusOK
 	if r := a.req.Header.Get("Range"); r != "" {
-		fatalf(400, "NotImplemented", "range unimplemented")
+		// s3 ignores invalid ranges
+		if matches := rangePattern.FindStringSubmatch(r); len(matches) == 3 {
+			var err error
+			start := 0
+			end := len(obj.data) - 1
+			if matches[1] != "" {
+				start, err = strconv.Atoi(matches[1])
+			}
+			if err == nil && matches[2] != "" {
+				end, err = strconv.Atoi(matches[2])
+			}
+			if err == nil && start >= 0 && end >= start {
+				if start >= len(obj.data) {
+					fatalf(416, "InvalidRequest", "The requested range is not satisfiable")
+				}
+				if end > len(obj.data)-1 {
+					end = len(obj.data) - 1
+				}
+				data = obj.data[start : end+1]
+				status = http.StatusPartialContent
+				h.Set("Content-Range", fmt.Sprintf("bytes %d-%d/%d", start, end, len(obj.data)))
+			}
+		}
 	}
 	// TODO Last-Modified-Since
 	// TODO If-Modified-Since
@@ -602,14 +646,19 @@ func (objr objectResource) get(a *action) interface{} {
 	// TODO If-None-Match
 	// TODO Connection: close ??
 	// TODO x-amz-request-id
-	h.Set("Content-Length", fmt.Sprint(len(obj.data)))
+	h.Set("Content-Length", fmt.Sprint(len(data)))
 	h.Set("ETag", hex.EncodeToString(obj.checksum))
 	h.Set("Last-Modified", obj.mtime.Format(time.RFC1123))
+
+	if status != http.StatusOK {
+		a.w.WriteHeader(status)
+	}
+
 	if a.req.Method == "HEAD" {
 		return nil
 	}
 	// TODO avoid holding the lock when writing data.
-	_, err := a.w.Write(obj.data)
+	_, err := a.w.Write(data)
 	if err != nil {
 		// we can't do much except just log the fact.
 		log.Printf("error writing data: %v", err)
@@ -633,6 +682,7 @@ func (objr objectResource) put(a *action) interface{} {
 	// TODO x-amz-storage-class
 
 	uploadId := a.req.URL.Query().Get("uploadId")
+	var partNumber uint
 
 	// Check that the upload ID is valid if this is a multipart upload
 	if uploadId != "" {
@@ -646,16 +696,13 @@ func (objr objectResource) put(a *action) interface{} {
 			fatalf(400, "InvalidRequest", "Missing partNumber parameter")
 		}
 
-		partNumber, err := strconv.ParseUint(partNumberStr, 10, 32)
+		number, err := strconv.ParseUint(partNumberStr, 10, 32)
 
 		if err != nil {
 			fatalf(400, "InvalidRequest", "partNumber is not a number")
 		}
 
-		// Parts are 1-indexed for multipart uploads
+		partNumber = uint(number)
-		if uint(partNumber)-1 != uint(len(objr.bucket.multipartUploads[uploadId])) {
-			fatalf(400, "InvalidRequest", "Invalid part number")
-		}
 	}
 
 	var expectHash []byte
@@ -712,9 +759,10 @@ func (objr objectResource) put(a *action) interface{} {
 
 		parts := objr.bucket.multipartUploads[uploadId]
 		part := &multipartUploadPart{
-			data,
+			index:        partNumber,
-			etag,
+			data:         data,
-			time.Now(),
+			etag:         etag,
+			lastModified: time.Now(),
 		}
 
 		objr.bucket.multipartUploads[uploadId] = append(parts, part)
@@ -755,6 +803,13 @@ func (objr objectResource) post(a *action) interface{} {
 		uploadId := strconv.FormatInt(rand.Int63(), 16)
 
 		objr.bucket.multipartUploads[uploadId] = []*multipartUploadPart{}
+		objr.bucket.multipartMeta[uploadId] = make(http.Header)
+		for key, values := range a.req.Header {
+			key = http.CanonicalHeaderKey(key)
+			if metaHeaders[key] || strings.HasPrefix(key, "X-Amz-Meta-") {
+				objr.bucket.multipartMeta[uploadId][key] = values
+			}
+		}
 
 		return &multipartInitResponse{
 			Bucket:   objr.bucket.name,
@@ -804,10 +859,12 @@ func (objr objectResource) post(a *action) interface{} {
 		data := &bytes.Buffer{}
 		w := io.MultiWriter(sum, data)
 
+		sort.Sort(multipartUploadPartByIndex(parts))
+
 		for i, p := range parts {
 			reqPart := req.Part[i]
 
-			if reqPart.PartNumber != uint(1+i) {
+			if reqPart.PartNumber != p.index {
 				fatalf(400, "InvalidRequest", "Bad part number")
 			}
 
@@ -833,6 +890,7 @@ func (objr objectResource) post(a *action) interface{} {
 		obj.checksum = sum.Sum(nil)
 		obj.mtime = time.Now()
 		objr.bucket.objects[objr.name] = obj
+		obj.meta = objr.bucket.multipartMeta[uploadId]
 
 		objectLocation := fmt.Sprintf("http://%s/%s/%s", a.srv.listener.Addr().String(), objr.bucket.name, objr.name)