Vendor azure-sdk-for-go with godep

Signed-off-by: Ahmet Alp Balkan <ahmetalpbalkan@gmail.com>
2015-02-04 16:37:43 -08:00 · 2015-02-04 16:37:43 -08:00 · bdc268bca3
commit bdc268bca3
parent d224eda04c
7 changed files with 2673 additions and 0 deletions
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@ -22,6 +22,11 @@
 			"ImportPath": "github.com/AdRoll/goamz/s3",
 			"Rev": "d3664b76d90508cdda5a6c92042f26eab5db3103"
 		},
+		{
+			"ImportPath": "github.com/MSOpenTech/azure-sdk-for-go/clients/storage",
+			"Comment": "v1.1-119-g0fbd371",
+			"Rev": "0fbd37144de3adc2aef74db867c0e15e41c7f74a"
+		},
 		{
 			"ImportPath": "github.com/Sirupsen/logrus",
 			"Comment": "v0.6.1-8-gcc09837",
--- a/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/blob.go
+++ b/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/blob.go
@ -0,0 +1,884 @@
+package storage
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type BlobStorageClient struct {
+	client StorageClient
+}
+
+// A Container is an entry in ContainerListResponse.
+type Container struct {
+	Name       string              `xml:"Name"`
+	Properties ContainerProperties `xml:"Properties"`
+	// TODO (ahmetalpbalkan) Metadata
+}
+
+// ContainerProperties contains various properties of a
+// container returned from various endpoints like ListContainers.
+type ContainerProperties struct {
+	LastModified  string `xml:"Last-Modified"`
+	Etag          string `xml:"Etag"`
+	LeaseStatus   string `xml:"LeaseStatus"`
+	LeaseState    string `xml:"LeaseState"`
+	LeaseDuration string `xml:"LeaseDuration"`
+	// TODO (ahmetalpbalkan) remaining fields
+}
+
+// ContainerListResponse contains the response fields from
+// ListContainers call. https://msdn.microsoft.com/en-us/library/azure/dd179352.aspx
+type ContainerListResponse struct {
+	XMLName    xml.Name    `xml:"EnumerationResults"`
+	Xmlns      string      `xml:"xmlns,attr"`
+	Prefix     string      `xml:"Prefix"`
+	Marker     string      `xml:"Marker"`
+	NextMarker string      `xml:"NextMarker"`
+	MaxResults int64       `xml:"MaxResults"`
+	Containers []Container `xml:"Containers>Container"`
+}
+
+// A Blob is an entry in BlobListResponse.
+type Blob struct {
+	Name       string         `xml:"Name"`
+	Properties BlobProperties `xml:"Properties"`
+	// TODO (ahmetalpbalkan) Metadata
+}
+
+// BlobProperties contains various properties of a blob
+// returned in various endpoints like ListBlobs or GetBlobProperties.
+type BlobProperties struct {
+	LastModified          string   `xml:"Last-Modified"`
+	Etag                  string   `xml:"Etag"`
+	ContentMD5            string   `xml:"Content-MD5"`
+	ContentLength         int64    `xml:"Content-Length"`
+	ContentType           string   `xml:"Content-Type"`
+	ContentEncoding       string   `xml:"Content-Encoding"`
+	BlobType              BlobType `xml:"x-ms-blob-blob-type"`
+	SequenceNumber        int64    `xml:"x-ms-blob-sequence-number"`
+	CopyId                string   `xml:"CopyId"`
+	CopyStatus            string   `xml:"CopyStatus"`
+	CopySource            string   `xml:"CopySource"`
+	CopyProgress          string   `xml:"CopyProgress"`
+	CopyCompletionTime    string   `xml:"CopyCompletionTime"`
+	CopyStatusDescription string   `xml:"CopyStatusDescription"`
+}
+
+// BlobListResponse contains the response fields from
+// ListBlobs call. https://msdn.microsoft.com/en-us/library/azure/dd135734.aspx
+type BlobListResponse struct {
+	XMLName    xml.Name `xml:"EnumerationResults"`
+	Xmlns      string   `xml:"xmlns,attr"`
+	Prefix     string   `xml:"Prefix"`
+	Marker     string   `xml:"Marker"`
+	NextMarker string   `xml:"NextMarker"`
+	MaxResults int64    `xml:"MaxResults"`
+	Blobs      []Blob   `xml:"Blobs>Blob"`
+}
+
+// ListContainersParameters defines the set of customizable
+// parameters to make a List Containers call. https://msdn.microsoft.com/en-us/library/azure/dd179352.aspx
+type ListContainersParameters struct {
+	Prefix     string
+	Marker     string
+	Include    string
+	MaxResults uint
+	Timeout    uint
+}
+
+func (p ListContainersParameters) getParameters() url.Values {
+	out := url.Values{}
+
+	if p.Prefix != "" {
+		out.Set("prefix", p.Prefix)
+	}
+	if p.Marker != "" {
+		out.Set("marker", p.Marker)
+	}
+	if p.Include != "" {
+		out.Set("include", p.Include)
+	}
+	if p.MaxResults != 0 {
+		out.Set("maxresults", fmt.Sprintf("%v", p.MaxResults))
+	}
+	if p.Timeout != 0 {
+		out.Set("timeout", fmt.Sprintf("%v", p.Timeout))
+	}
+
+	return out
+}
+
+// ListBlobsParameters defines the set of customizable
+// parameters to make a List Blobs call. https://msdn.microsoft.com/en-us/library/azure/dd135734.aspx
+type ListBlobsParameters struct {
+	Prefix     string
+	Delimiter  string
+	Marker     string
+	Include    string
+	MaxResults uint
+	Timeout    uint
+}
+
+func (p ListBlobsParameters) getParameters() url.Values {
+	out := url.Values{}
+
+	if p.Prefix != "" {
+		out.Set("prefix", p.Prefix)
+	}
+	if p.Delimiter != "" {
+		out.Set("delimiter", p.Delimiter)
+	}
+	if p.Marker != "" {
+		out.Set("marker", p.Marker)
+	}
+	if p.Include != "" {
+		out.Set("include", p.Include)
+	}
+	if p.MaxResults != 0 {
+		out.Set("maxresults", fmt.Sprintf("%v", p.MaxResults))
+	}
+	if p.Timeout != 0 {
+		out.Set("timeout", fmt.Sprintf("%v", p.Timeout))
+	}
+
+	return out
+}
+
+// BlobType defines the type of the Azure Blob.
+type BlobType string
+
+const (
+	BlobTypeBlock BlobType = "BlockBlob"
+	BlobTypePage  BlobType = "PageBlob"
+)
+
+// PageWriteType defines the type updates that are going to be
+// done on the page blob.
+type PageWriteType string
+
+const (
+	PageWriteTypeUpdate PageWriteType = "update"
+	PageWriteTypeClear  PageWriteType = "clear"
+)
+
+const (
+	blobCopyStatusPending = "pending"
+	blobCopyStatusSuccess = "success"
+	blobCopyStatusAborted = "aborted"
+	blobCopyStatusFailed  = "failed"
+)
+
+// BlockListType is used to filter out types of blocks
+// in a Get Blocks List call for a block blob. See
+// https://msdn.microsoft.com/en-us/library/azure/dd179400.aspx
+// for all block types.
+type BlockListType string
+
+const (
+	BlockListTypeAll         BlockListType = "all"
+	BlockListTypeCommitted   BlockListType = "committed"
+	BlockListTypeUncommitted BlockListType = "uncommitted"
+)
+
+// ContainerAccessType defines the access level to the container
+// from a public request. See https://msdn.microsoft.com/en-us/library/azure/dd179468.aspx
+// and "x-ms-blob-public-access" header.
+type ContainerAccessType string
+
+const (
+	ContainerAccessTypePrivate   ContainerAccessType = ""
+	ContainerAccessTypeBlob      ContainerAccessType = "blob"
+	ContainerAccessTypeContainer ContainerAccessType = "container"
+)
+
+const (
+	MaxBlobBlockSize = 4 * 1024 * 1024
+	MaxBlobPageSize  = 4 * 1024 * 1024
+)
+
+// BlockStatus defines states a block for a block blob can
+// be in.
+type BlockStatus string
+
+const (
+	BlockStatusUncommitted BlockStatus = "Uncommitted"
+	BlockStatusCommitted   BlockStatus = "Committed"
+	BlockStatusLatest      BlockStatus = "Latest"
+)
+
+// Block is used to create Block entities for Put Block List
+// call.
+type Block struct {
+	Id     string
+	Status BlockStatus
+}
+
+// BlockListResponse contains the response fields from
+// Get Block List call. https://msdn.microsoft.com/en-us/library/azure/dd179400.aspx
+type BlockListResponse struct {
+	XMLName           xml.Name        `xml:"BlockList"`
+	CommittedBlocks   []BlockResponse `xml:"CommittedBlocks>Block"`
+	UncommittedBlocks []BlockResponse `xml:"UncommittedBlocks>Block"`
+}
+
+// BlockResponse contains the block information returned
+// in the GetBlockListCall.
+type BlockResponse struct {
+	Name string `xml:"Name"`
+	Size int64  `xml:"Size"`
+}
+
+// GetPageRangesResponse contains the reponse fields from
+// Get Page Ranges call. https://msdn.microsoft.com/en-us/library/azure/ee691973.aspx
+type GetPageRangesResponse struct {
+	XMLName  xml.Name    `xml:"PageList"`
+	PageList []PageRange `xml:"PageRange"`
+}
+
+// PageRange contains information about a page of a page blob from
+// Get Pages Range call. https://msdn.microsoft.com/en-us/library/azure/ee691973.aspx
+type PageRange struct {
+	Start int64 `xml:"Start"`
+	End   int64 `xml:"End"`
+}
+
+var (
+	ErrNotCreated  = errors.New("storage: operation has returned a successful error code other than 201 Created.")
+	ErrNotAccepted = errors.New("storage: operation has returned a successful error code other than 202 Accepted.")
+
+	errBlobCopyAborted    = errors.New("storage: blob copy is aborted")
+	errBlobCopyIdMismatch = errors.New("storage: blob copy id is a mismatch")
+)
+
+const errUnexpectedStatus = "storage: was expecting status code: %d, got: %d"
+
+// ListContainers returns the list of containers in a storage account along with
+// pagination token and other response details. See https://msdn.microsoft.com/en-us/library/azure/dd179352.aspx
+func (b BlobStorageClient) ListContainers(params ListContainersParameters) (ContainerListResponse, error) {
+	q := mergeParams(params.getParameters(), url.Values{"comp": {"list"}})
+	uri := b.client.getEndpoint(blobServiceName, "", q)
+	headers := b.client.getStandardHeaders()
+
+	var out ContainerListResponse
+	resp, err := b.client.exec("GET", uri, headers, nil)
+	if err != nil {
+		return out, err
+	}
+
+	err = xmlUnmarshal(resp.body, &out)
+	return out, err
+}
+
+// CreateContainer creates a blob container within the storage account
+// with given name and access level. See https://msdn.microsoft.com/en-us/library/azure/dd179468.aspx
+// Returns error if container already exists.
+func (b BlobStorageClient) CreateContainer(name string, access ContainerAccessType) error {
+	resp, err := b.createContainer(name, access)
+	if err != nil {
+		return err
+	}
+	if resp.statusCode != http.StatusCreated {
+		return ErrNotCreated
+	}
+	return nil
+}
+
+// CreateContainerIfNotExists creates a blob container if it does not exist. Returns
+// true if container is newly created or false if container already exists.
+func (b BlobStorageClient) CreateContainerIfNotExists(name string, access ContainerAccessType) (bool, error) {
+	resp, err := b.createContainer(name, access)
+	if resp != nil && (resp.statusCode == http.StatusCreated || resp.statusCode == http.StatusConflict) {
+		return resp.statusCode == http.StatusCreated, nil
+	}
+	return false, err
+}
+
+func (b BlobStorageClient) createContainer(name string, access ContainerAccessType) (*storageResponse, error) {
+	verb := "PUT"
+	uri := b.client.getEndpoint(blobServiceName, pathForContainer(name), url.Values{"restype": {"container"}})
+
+	headers := b.client.getStandardHeaders()
+	headers["Content-Length"] = "0"
+	if access != "" {
+		headers["x-ms-blob-public-access"] = string(access)
+	}
+	return b.client.exec(verb, uri, headers, nil)
+}
+
+// ContainerExists returns true if a container with given name exists
+// on the storage account, otherwise returns false.
+func (b BlobStorageClient) ContainerExists(name string) (bool, error) {
+	verb := "HEAD"
+	uri := b.client.getEndpoint(blobServiceName, pathForContainer(name), url.Values{"restype": {"container"}})
+	headers := b.client.getStandardHeaders()
+
+	resp, err := b.client.exec(verb, uri, headers, nil)
+	if resp != nil && (resp.statusCode == http.StatusOK || resp.statusCode == http.StatusNotFound) {
+		return resp.statusCode == http.StatusOK, nil
+	}
+	return false, err
+}
+
+// DeleteContainer deletes the container with given name on the storage
+// account. See https://msdn.microsoft.com/en-us/library/azure/dd179408.aspx
+// If the container does not exist returns error.
+func (b BlobStorageClient) DeleteContainer(name string) error {
+	resp, err := b.deleteContainer(name)
+	if err != nil {
+		return err
+	}
+	if resp.statusCode != http.StatusAccepted {
+		return ErrNotAccepted
+	}
+	return nil
+}
+
+// DeleteContainer deletes the container with given name on the storage
+// account if it exists. See https://msdn.microsoft.com/en-us/library/azure/dd179408.aspx
+// Returns true if container is deleted with this call, or false
+// if the container did not exist at the time of the Delete Container operation.
+func (b BlobStorageClient) DeleteContainerIfExists(name string) (bool, error) {
+	resp, err := b.deleteContainer(name)
+	if resp != nil && (resp.statusCode == http.StatusAccepted || resp.statusCode == http.StatusNotFound) {
+		return resp.statusCode == http.StatusAccepted, nil
+	}
+	return false, err
+}
+
+func (b BlobStorageClient) deleteContainer(name string) (*storageResponse, error) {
+	verb := "DELETE"
+	uri := b.client.getEndpoint(blobServiceName, pathForContainer(name), url.Values{"restype": {"container"}})
+
+	headers := b.client.getStandardHeaders()
+	return b.client.exec(verb, uri, headers, nil)
+}
+
+// ListBlobs returns an object that contains list of blobs in the container,
+// pagination token and other information in the response of List Blobs call.
+// See https://msdn.microsoft.com/en-us/library/azure/dd135734.aspx
+func (b BlobStorageClient) ListBlobs(container string, params ListBlobsParameters) (BlobListResponse, error) {
+	q := mergeParams(params.getParameters(), url.Values{
+		"restype": {"container"},
+		"comp":    {"list"}})
+	uri := b.client.getEndpoint(blobServiceName, pathForContainer(container), q)
+	headers := b.client.getStandardHeaders()
+
+	var out BlobListResponse
+	resp, err := b.client.exec("GET", uri, headers, nil)
+	if err != nil {
+		return out, err
+	}
+
+	err = xmlUnmarshal(resp.body, &out)
+	return out, err
+}
+
+// BlobExists returns true if a blob with given name exists on the
+// specified container of the storage account.
+func (b BlobStorageClient) BlobExists(container, name string) (bool, error) {
+	verb := "HEAD"
+	uri := b.client.getEndpoint(blobServiceName, pathForBlob(container, name), url.Values{})
+
+	headers := b.client.getStandardHeaders()
+	resp, err := b.client.exec(verb, uri, headers, nil)
+	if resp != nil && (resp.statusCode == http.StatusOK || resp.statusCode == http.StatusNotFound) {
+		return resp.statusCode == http.StatusOK, nil
+	}
+	return false, err
+}
+
+// GetBlobUrl gets the canonical URL to the blob with the specified
+// name in the specified container. This method does not create a
+// publicly accessible URL if the blob or container is private and this
+// method does not check if the blob exists.
+func (b BlobStorageClient) GetBlobUrl(container, name string) string {
+	if container == "" {
+		container = "$root"
+	}
+	return b.client.getEndpoint(blobServiceName, pathForBlob(container, name), url.Values{})
+}
+
+// GetBlob downloads a blob to a stream. See https://msdn.microsoft.com/en-us/library/azure/dd179440.aspx
+func (b BlobStorageClient) GetBlob(container, name string) (io.ReadCloser, error) {
+	resp, err := b.getBlobRange(container, name, "")
+	if err != nil {
+		return nil, err
+	}
+
+	if resp.statusCode != http.StatusOK {
+		return nil, fmt.Errorf(errUnexpectedStatus, http.StatusOK, resp.statusCode)
+	}
+	return resp.body, nil
+}
+
+// GetBlobRange reads the specified range of a blob to a stream.
+// The bytesRange string must be in a format like "0-", "10-100"
+// as defined in HTTP 1.1 spec. See https://msdn.microsoft.com/en-us/library/azure/dd179440.aspx
+func (b BlobStorageClient) GetBlobRange(container, name, bytesRange string) (io.ReadCloser, error) {
+	resp, err := b.getBlobRange(container, name, bytesRange)
+	if err != nil {
+		return nil, err
+	}
+
+	if resp.statusCode != http.StatusPartialContent {
+		return nil, fmt.Errorf(errUnexpectedStatus, http.StatusPartialContent, resp.statusCode)
+	}
+	return resp.body, nil
+}
+
+func (b BlobStorageClient) getBlobRange(container, name, bytesRange string) (*storageResponse, error) {
+	verb := "GET"
+	uri := b.client.getEndpoint(blobServiceName, pathForBlob(container, name), url.Values{})
+
+	headers := b.client.getStandardHeaders()
+	if bytesRange != "" {
+		headers["Range"] = fmt.Sprintf("bytes=%s", bytesRange)
+	}
+	resp, err := b.client.exec(verb, uri, headers, nil)
+	if err != nil {
+		return nil, err
+	}
+	return resp, err
+}
+
+// GetBlobProperties provides various information about the specified
+// blob. See https://msdn.microsoft.com/en-us/library/azure/dd179394.aspx
+func (b BlobStorageClient) GetBlobProperties(container, name string) (*BlobProperties, error) {
+	verb := "HEAD"
+	uri := b.client.getEndpoint(blobServiceName, pathForBlob(container, name), url.Values{})
+
+	headers := b.client.getStandardHeaders()
+	resp, err := b.client.exec(verb, uri, headers, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	if resp.statusCode != http.StatusOK {
+		return nil, fmt.Errorf(errUnexpectedStatus, http.StatusOK, resp.statusCode)
+	}
+
+	var contentLength int64
+	contentLengthStr := resp.headers.Get("Content-Length")
+	if contentLengthStr != "" {
+		contentLength, err = strconv.ParseInt(contentLengthStr, 0, 64)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	var sequenceNum int64
+	sequenceNumStr := resp.headers.Get("x-ms-blob-sequence-number")
+	if sequenceNumStr != "" {
+		sequenceNum, err = strconv.ParseInt(sequenceNumStr, 0, 64)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &BlobProperties{
+		LastModified:          resp.headers.Get("Last-Modified"),
+		Etag:                  resp.headers.Get("Etag"),
+		ContentMD5:            resp.headers.Get("Content-MD5"),
+		ContentLength:         contentLength,
+		ContentEncoding:       resp.headers.Get("Content-Encoding"),
+		SequenceNumber:        sequenceNum,
+		CopyCompletionTime:    resp.headers.Get("x-ms-copy-completion-time"),
+		CopyStatusDescription: resp.headers.Get("x-ms-copy-status-description"),
+		CopyId:                resp.headers.Get("x-ms-copy-id"),
+		CopyProgress:          resp.headers.Get("x-ms-copy-progress"),
+		CopySource:            resp.headers.Get("x-ms-copy-source"),
+		CopyStatus:            resp.headers.Get("x-ms-copy-status"),
+		BlobType:              BlobType(resp.headers.Get("x-ms-blob-type")),
+	}, nil
+}
+
+// CreateBlockBlob initializes an empty block blob with no blocks.
+// See https://msdn.microsoft.com/en-us/library/azure/dd179451.aspx
+func (b BlobStorageClient) CreateBlockBlob(container, name string) error {
+	path := fmt.Sprintf("%s/%s", container, name)
+	uri := b.client.getEndpoint(blobServiceName, path, url.Values{})
+	headers := b.client.getStandardHeaders()
+	headers["x-ms-blob-type"] = string(BlobTypeBlock)
+	headers["Content-Length"] = fmt.Sprintf("%v", 0)
+
+	resp, err := b.client.exec("PUT", uri, headers, nil)
+	if err != nil {
+		return err
+	}
+	if resp.statusCode != http.StatusCreated {
+		return ErrNotCreated
+	}
+	return nil
+}
+
+// PutBlockBlob uploads given stream into a block blob by splitting
+// data stream into chunks and uploading as blocks. Commits the block
+// list at the end. This is a helper method built on top of PutBlock
+// and PutBlockList methods with sequential block ID counting logic.
+func (b BlobStorageClient) PutBlockBlob(container, name string, blob io.Reader) error { // TODO (ahmetalpbalkan) consider ReadCloser and closing
+	return b.putBlockBlob(container, name, blob, MaxBlobBlockSize)
+}
+
+func (b BlobStorageClient) putBlockBlob(container, name string, blob io.Reader, chunkSize int) error {
+	if chunkSize <= 0 || chunkSize > MaxBlobBlockSize {
+		chunkSize = MaxBlobBlockSize
+	}
+
+	chunk := make([]byte, chunkSize)
+	n, err := blob.Read(chunk)
+	if err != nil && err != io.EOF {
+		return err
+	}
+
+	if err == io.EOF {
+		// Fits into one block
+		return b.putSingleBlockBlob(container, name, chunk[:n])
+	} else {
+		// Does not fit into one block. Upload block by block then commit the block list
+		blockList := []Block{}
+
+		// Put blocks
+		for blockNum := 0; ; blockNum++ {
+			id := base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("%011d", blockNum)))
+			data := chunk[:n]
+			err = b.PutBlock(container, name, id, data)
+			if err != nil {
+				return err
+			}
+			blockList = append(blockList, Block{id, BlockStatusLatest})
+
+			// Read next block
+			n, err = blob.Read(chunk)
+			if err != nil && err != io.EOF {
+				return err
+			}
+			if err == io.EOF {
+				break
+			}
+		}
+
+		// Commit block list
+		return b.PutBlockList(container, name, blockList)
+	}
+}
+
+func (b BlobStorageClient) putSingleBlockBlob(container, name string, chunk []byte) error {
+	if len(chunk) > MaxBlobBlockSize {
+		return fmt.Errorf("storage: provided chunk (%d bytes) cannot fit into single-block blob (max %d bytes)", len(chunk), MaxBlobBlockSize)
+	}
+
+	uri := b.client.getEndpoint(blobServiceName, pathForBlob(container, name), url.Values{})
+	headers := b.client.getStandardHeaders()
+	headers["x-ms-blob-type"] = string(BlobTypeBlock)
+	headers["Content-Length"] = fmt.Sprintf("%v", len(chunk))
+
+	resp, err := b.client.exec("PUT", uri, headers, bytes.NewReader(chunk))
+	if err != nil {
+		return err
+	}
+	if resp.statusCode != http.StatusCreated {
+		return ErrNotCreated
+	}
+
+	return nil
+}
+
+// PutBlock saves the given data chunk to the specified block blob with
+// given ID. See https://msdn.microsoft.com/en-us/library/azure/dd135726.aspx
+func (b BlobStorageClient) PutBlock(container, name, blockId string, chunk []byte) error {
+	return b.PutBlockWithLength(container, name, blockId, uint64(len(chunk)), bytes.NewReader(chunk))
+}
+
+// PutBlockWithLength saves the given data stream of exactly specified size to the block blob
+// with given ID. See https://msdn.microsoft.com/en-us/library/azure/dd135726.aspx
+// It is an alternative to PutBlocks where data comes as stream but the length is
+// known in advance.
+func (b BlobStorageClient) PutBlockWithLength(container, name, blockId string, size uint64, blob io.Reader) error {
+	uri := b.client.getEndpoint(blobServiceName, pathForBlob(container, name), url.Values{"comp": {"block"}, "blockid": {blockId}})
+	headers := b.client.getStandardHeaders()
+	headers["x-ms-blob-type"] = string(BlobTypeBlock)
+	headers["Content-Length"] = fmt.Sprintf("%v", size)
+
+	resp, err := b.client.exec("PUT", uri, headers, blob)
+	if err != nil {
+		return err
+	}
+	if resp.statusCode != http.StatusCreated {
+		return ErrNotCreated
+	}
+
+	return nil
+}
+
+// PutBlockList saves list of blocks to the specified block blob. See
+// https://msdn.microsoft.com/en-us/library/azure/dd179467.aspx
+func (b BlobStorageClient) PutBlockList(container, name string, blocks []Block) error {
+	blockListXml := prepareBlockListRequest(blocks)
+
+	uri := b.client.getEndpoint(blobServiceName, pathForBlob(container, name), url.Values{"comp": {"blocklist"}})
+	headers := b.client.getStandardHeaders()
+	headers["Content-Length"] = fmt.Sprintf("%v", len(blockListXml))
+
+	resp, err := b.client.exec("PUT", uri, headers, strings.NewReader(blockListXml))
+	if err != nil {
+		return err
+	}
+	if resp.statusCode != http.StatusCreated {
+		return ErrNotCreated
+	}
+	return nil
+}
+
+// GetBlockList retrieves list of blocks in the specified block blob. See
+// https://msdn.microsoft.com/en-us/library/azure/dd179400.aspx
+func (b BlobStorageClient) GetBlockList(container, name string, blockType BlockListType) (BlockListResponse, error) {
+	params := url.Values{"comp": {"blocklist"}, "blocklisttype": {string(blockType)}}
+	uri := b.client.getEndpoint(blobServiceName, pathForBlob(container, name), params)
+	headers := b.client.getStandardHeaders()
+
+	var out BlockListResponse
+	resp, err := b.client.exec("GET", uri, headers, nil)
+	if err != nil {
+		return out, err
+	}
+
+	err = xmlUnmarshal(resp.body, &out)
+	return out, err
+}
+
+// PutPageBlob initializes an empty page blob with specified name and maximum
+// size in bytes (size must be aligned to a 512-byte boundary). A page blob must
+// be created using this method before writing pages.
+// See https://msdn.microsoft.com/en-us/library/azure/dd179451.aspx
+func (b BlobStorageClient) PutPageBlob(container, name string, size int64) error {
+	path := fmt.Sprintf("%s/%s", container, name)
+	uri := b.client.getEndpoint(blobServiceName, path, url.Values{})
+	headers := b.client.getStandardHeaders()
+	headers["x-ms-blob-type"] = string(BlobTypePage)
+	headers["x-ms-blob-content-length"] = fmt.Sprintf("%v", size)
+	headers["Content-Length"] = fmt.Sprintf("%v", 0)
+
+	resp, err := b.client.exec("PUT", uri, headers, nil)
+	if err != nil {
+		return err
+	}
+	if resp.statusCode != http.StatusCreated {
+		return ErrNotCreated
+	}
+	return nil
+}
+
+// PutPage writes a range of pages to a page blob or clears the given range.
+// In case of 'clear' writes, given chunk is discarded. Ranges must be aligned
+// with 512-byte boundaries and chunk must be of size multiplies by 512.
+// See https://msdn.microsoft.com/en-us/library/ee691975.aspx
+func (b BlobStorageClient) PutPage(container, name string, startByte, endByte int64, writeType PageWriteType, chunk []byte) error {
+	path := fmt.Sprintf("%s/%s", container, name)
+	uri := b.client.getEndpoint(blobServiceName, path, url.Values{"comp": {"page"}})
+	headers := b.client.getStandardHeaders()
+	headers["x-ms-blob-type"] = string(BlobTypePage)
+	headers["x-ms-page-write"] = string(writeType)
+	headers["x-ms-range"] = fmt.Sprintf("bytes=%v-%v", startByte, endByte)
+
+	var contentLength int64
+	var data io.Reader
+	if writeType == PageWriteTypeClear {
+		contentLength = 0
+		data = bytes.NewReader([]byte{})
+	} else {
+		contentLength = int64(len(chunk))
+		data = bytes.NewReader(chunk)
+	}
+	headers["Content-Length"] = fmt.Sprintf("%v", contentLength)
+
+	resp, err := b.client.exec("PUT", uri, headers, data)
+	if err != nil {
+		return err
+	}
+	if resp.statusCode != http.StatusCreated {
+		return ErrNotCreated
+	}
+	return nil
+}
+
+// GetPageRanges returns the list of valid page ranges for a page blob.
+// See https://msdn.microsoft.com/en-us/library/azure/ee691973.aspx
+func (b BlobStorageClient) GetPageRanges(container, name string) (GetPageRangesResponse, error) {
+	path := fmt.Sprintf("%s/%s", container, name)
+	uri := b.client.getEndpoint(blobServiceName, path, url.Values{"comp": {"pagelist"}})
+	headers := b.client.getStandardHeaders()
+
+	var out GetPageRangesResponse
+	resp, err := b.client.exec("GET", uri, headers, nil)
+	if err != nil {
+		return out, err
+	}
+
+	if resp.statusCode != http.StatusOK {
+		return out, fmt.Errorf(errUnexpectedStatus, http.StatusOK, resp.statusCode)
+	}
+
+	err = xmlUnmarshal(resp.body, &out)
+	return out, err
+}
+
+// CopyBlob starts a blob copy operation and waits for the operation to complete.
+// sourceBlob parameter must be a canonical URL to the blob (can be obtained using
+// GetBlobURL method.) There is no SLA on blob copy and therefore this helper
+// method works faster on smaller files. See https://msdn.microsoft.com/en-us/library/azure/dd894037.aspx
+func (b BlobStorageClient) CopyBlob(container, name, sourceBlob string) error {
+	copyId, err := b.startBlobCopy(container, name, sourceBlob)
+	if err != nil {
+		return err
+	}
+
+	return b.waitForBlobCopy(container, name, copyId)
+}
+
+func (b BlobStorageClient) startBlobCopy(container, name, sourceBlob string) (string, error) {
+	uri := b.client.getEndpoint(blobServiceName, pathForBlob(container, name), url.Values{})
+
+	headers := b.client.getStandardHeaders()
+	headers["Content-Length"] = "0"
+	headers["x-ms-copy-source"] = sourceBlob
+
+	resp, err := b.client.exec("PUT", uri, headers, nil)
+	if err != nil {
+		return "", err
+	}
+	if resp.statusCode != http.StatusAccepted && resp.statusCode != http.StatusCreated {
+		return "", fmt.Errorf(errUnexpectedStatus, []int{http.StatusAccepted, http.StatusCreated}, resp.statusCode)
+	}
+
+	copyId := resp.headers.Get("x-ms-copy-id")
+	if copyId == "" {
+		return "", errors.New("Got empty copy id header")
+	}
+	return copyId, nil
+}
+
+func (b BlobStorageClient) waitForBlobCopy(container, name, copyId string) error {
+	for {
+		props, err := b.GetBlobProperties(container, name)
+		if err != nil {
+			return err
+		}
+
+		if props.CopyId != copyId {
+			return errBlobCopyIdMismatch
+		}
+
+		switch props.CopyStatus {
+		case blobCopyStatusSuccess:
+			return nil
+		case blobCopyStatusPending:
+			continue
+		case blobCopyStatusAborted:
+			return errBlobCopyAborted
+		case blobCopyStatusFailed:
+			return fmt.Errorf("storage: blob copy failed. Id=%s Description=%s", props.CopyId, props.CopyStatusDescription)
+		default:
+			return fmt.Errorf("storage: unhandled blob copy status: '%s'", props.CopyStatus)
+		}
+	}
+}
+
+// DeleteBlob deletes the given blob from the specified container.
+// If the blob does not exists at the time of the Delete Blob operation, it
+// returns error. See https://msdn.microsoft.com/en-us/library/azure/dd179413.aspx
+func (b BlobStorageClient) DeleteBlob(container, name string) error {
+	resp, err := b.deleteBlob(container, name)
+	if err != nil {
+		return err
+	}
+	if resp.statusCode != http.StatusAccepted {
+		return ErrNotAccepted
+	}
+	return nil
+}
+
+// DeleteBlobIfExists deletes the given blob from the specified container
+// If the blob is deleted with this call, returns true. Otherwise returns
+// false. See https://msdn.microsoft.com/en-us/library/azure/dd179413.aspx
+func (b BlobStorageClient) DeleteBlobIfExists(container, name string) (bool, error) {
+	resp, err := b.deleteBlob(container, name)
+	if resp != nil && (resp.statusCode == http.StatusAccepted || resp.statusCode == http.StatusNotFound) {
+		return resp.statusCode == http.StatusAccepted, nil
+	}
+	return false, err
+}
+
+func (b BlobStorageClient) deleteBlob(container, name string) (*storageResponse, error) {
+	verb := "DELETE"
+	uri := b.client.getEndpoint(blobServiceName, pathForBlob(container, name), url.Values{})
+	headers := b.client.getStandardHeaders()
+
+	return b.client.exec(verb, uri, headers, nil)
+}
+
+// helper method to construct the path to a container given its name
+func pathForContainer(name string) string {
+	return fmt.Sprintf("/%s", name)
+}
+
+// helper method to construct the path to a blob given its container and blob name
+func pathForBlob(container, name string) string {
+	return fmt.Sprintf("/%s/%s", container, name)
+}
+
+// GetBlobSASURI creates an URL to the specified blob which contains the Shared Access Signature
+// with specified permissions and expiration time. See https://msdn.microsoft.com/en-us/library/azure/ee395415.aspx
+func (b BlobStorageClient) GetBlobSASURI(container, name string, expiry time.Time, permissions string) (string, error) {
+	var (
+		signedPermissions = permissions
+		blobUrl           = b.GetBlobUrl(container, name)
+	)
+	canonicalizedResource, err := b.client.buildCanonicalizedResource(blobUrl)
+	if err != nil {
+		return "", err
+	}
+	signedExpiry := expiry.Format(time.RFC3339)
+	signedResource := "b"
+
+	stringToSign, err := blobSASStringToSign(b.client.apiVersion, canonicalizedResource, signedExpiry, signedPermissions)
+	if err != nil {
+		return "", err
+	}
+
+	sig := b.client.computeHmac256(stringToSign)
+	sasParams := url.Values{
+		"sv":  {b.client.apiVersion},
+		"se":  {signedExpiry},
+		"sr":  {signedResource},
+		"sp":  {signedPermissions},
+		"sig": {sig},
+	}
+
+	sasUrl, err := url.Parse(blobUrl)
+	if err != nil {
+		return "", err
+	}
+	sasUrl.RawQuery = sasParams.Encode()
+	return sasUrl.String(), nil
+}
+
+func blobSASStringToSign(signedVersion, canonicalizedResource, signedExpiry, signedPermissions string) (string, error) {
+	var signedStart, signedIdentifier, rscc, rscd, rsce, rscl, rsct string
+
+	// reference: http://msdn.microsoft.com/en-us/library/azure/dn140255.aspx
+	if signedVersion >= "2013-08-15" {
+		return fmt.Sprintf("%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s", signedPermissions, signedStart, signedExpiry, canonicalizedResource, signedIdentifier, signedVersion, rscc, rscd, rsce, rscl, rsct), nil
+	} else {
+		return "", errors.New("storage: not implemented SAS for versions earlier than 2013-08-15")
+	}
+}
--- a/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/blob_test.go
+++ b/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/blob_test.go
--- a/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/client.go
+++ b/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/client.go
@ -0,0 +1,315 @@
+package storage
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/xml"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+const (
+	DefaultBaseUrl    = "core.windows.net"
+	DefaultApiVersion = "2014-02-14"
+	defaultUseHttps   = true
+
+	blobServiceName  = "blob"
+	tableServiceName = "table"
+	queueServiceName = "queue"
+)
+
+// StorageClient is the object that needs to be constructed
+// to perform operations on the storage account.
+type StorageClient struct {
+	accountName string
+	accountKey  []byte
+	useHttps    bool
+	baseUrl     string
+	apiVersion  string
+}
+
+type storageResponse struct {
+	statusCode int
+	headers    http.Header
+	body       io.ReadCloser
+}
+
+// StorageServiceError contains fields of the error response from
+// Azure Storage Service REST API. See https://msdn.microsoft.com/en-us/library/azure/dd179382.aspx
+// Some fields might be specific to certain calls.
+type StorageServiceError struct {
+	Code                      string `xml:"Code"`
+	Message                   string `xml:"Message"`
+	AuthenticationErrorDetail string `xml:"AuthenticationErrorDetail"`
+	QueryParameterName        string `xml:"QueryParameterName"`
+	QueryParameterValue       string `xml:"QueryParameterValue"`
+	Reason                    string `xml:"Reason"`
+	StatusCode                int
+	RequestId                 string
+}
+
+// NewBasicClient constructs a StorageClient with given storage service name
+// and key.
+func NewBasicClient(accountName, accountKey string) (*StorageClient, error) {
+	return NewClient(accountName, accountKey, DefaultBaseUrl, DefaultApiVersion, defaultUseHttps)
+}
+
+// NewClient constructs a StorageClient. This should be used if the caller
+// wants to specify whether to use HTTPS, a specific REST API version or a
+// custom storage endpoint than Azure Public Cloud.
+func NewClient(accountName, accountKey, blobServiceBaseUrl, apiVersion string, useHttps bool) (*StorageClient, error) {
+	if accountName == "" {
+		return nil, fmt.Errorf("azure: account name required")
+	} else if accountKey == "" {
+		return nil, fmt.Errorf("azure: account key required")
+	} else if blobServiceBaseUrl == "" {
+		return nil, fmt.Errorf("azure: base storage service url required")
+	}
+
+	key, err := base64.StdEncoding.DecodeString(accountKey)
+	if err != nil {
+		return nil, err
+	}
+
+	return &StorageClient{
+		accountName: accountName,
+		accountKey:  key,
+		useHttps:    useHttps,
+		baseUrl:     blobServiceBaseUrl,
+		apiVersion:  apiVersion}, nil
+}
+
+func (c StorageClient) getBaseUrl(service string) string {
+	scheme := "http"
+	if c.useHttps {
+		scheme = "https"
+	}
+
+	host := fmt.Sprintf("%s.%s.%s", c.accountName, service, c.baseUrl)
+
+	u := &url.URL{
+		Scheme: scheme,
+		Host:   host}
+	return u.String()
+}
+
+func (c StorageClient) getEndpoint(service, path string, params url.Values) string {
+	u, err := url.Parse(c.getBaseUrl(service))
+	if err != nil {
+		// really should not be happening
+		panic(err)
+	}
+
+	if path == "" {
+		path = "/" // API doesn't accept path segments not starting with '/'
+	}
+
+	u.Path = path
+	u.RawQuery = params.Encode()
+	return u.String()
+}
+
+// GetBlobService returns a BlobStorageClient which can operate on the
+// blob service of the storage account.
+func (c StorageClient) GetBlobService() *BlobStorageClient {
+	return &BlobStorageClient{c}
+}
+
+func (c StorageClient) createAuthorizationHeader(canonicalizedString string) string {
+	signature := c.computeHmac256(canonicalizedString)
+	return fmt.Sprintf("%s %s:%s", "SharedKey", c.accountName, signature)
+}
+
+func (c StorageClient) getAuthorizationHeader(verb, url string, headers map[string]string) (string, error) {
+	canonicalizedResource, err := c.buildCanonicalizedResource(url)
+	if err != nil {
+		return "", err
+	}
+
+	canonicalizedString := c.buildCanonicalizedString(verb, headers, canonicalizedResource)
+	return c.createAuthorizationHeader(canonicalizedString), nil
+}
+
+func (c StorageClient) getStandardHeaders() map[string]string {
+	return map[string]string{
+		"x-ms-version": c.apiVersion,
+		"x-ms-date":    currentTimeRfc1123Formatted(),
+	}
+}
+
+func (c StorageClient) buildCanonicalizedHeader(headers map[string]string) string {
+	cm := make(map[string]string)
+
+	for k, v := range headers {
+		headerName := strings.TrimSpace(strings.ToLower(k))
+		match, _ := regexp.MatchString("x-ms-", headerName)
+		if match {
+			cm[headerName] = v
+		}
+	}
+
+	if len(cm) == 0 {
+		return ""
+	}
+
+	keys := make([]string, 0, len(cm))
+	for key := range cm {
+		keys = append(keys, key)
+	}
+
+	sort.Strings(keys)
+
+	ch := ""
+
+	for i, key := range keys {
+		if i == len(keys)-1 {
+			ch += fmt.Sprintf("%s:%s", key, cm[key])
+		} else {
+			ch += fmt.Sprintf("%s:%s\n", key, cm[key])
+		}
+	}
+	return ch
+}
+
+func (c StorageClient) buildCanonicalizedResource(uri string) (string, error) {
+	errMsg := "buildCanonicalizedResource error: %s"
+	u, err := url.Parse(uri)
+	if err != nil {
+		return "", fmt.Errorf(errMsg, err.Error())
+	}
+
+	cr := "/" + c.accountName
+	if len(u.Path) > 0 {
+		cr += u.Path
+	}
+
+	params, err := url.ParseQuery(u.RawQuery)
+	if err != nil {
+		return "", fmt.Errorf(errMsg, err.Error())
+	}
+
+	if len(params) > 0 {
+		cr += "\n"
+		keys := make([]string, 0, len(params))
+		for key := range params {
+			keys = append(keys, key)
+		}
+
+		sort.Strings(keys)
+
+		for i, key := range keys {
+			if len(params[key]) > 1 {
+				sort.Strings(params[key])
+			}
+
+			if i == len(keys)-1 {
+				cr += fmt.Sprintf("%s:%s", key, strings.Join(params[key], ","))
+			} else {
+				cr += fmt.Sprintf("%s:%s\n", key, strings.Join(params[key], ","))
+			}
+		}
+	}
+	return cr, nil
+}
+
+func (c StorageClient) buildCanonicalizedString(verb string, headers map[string]string, canonicalizedResource string) string {
+	canonicalizedString := fmt.Sprintf("%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s",
+		verb,
+		headers["Content-Encoding"],
+		headers["Content-Language"],
+		headers["Content-Length"],
+		headers["Content-MD5"],
+		headers["Content-Type"],
+		headers["Date"],
+		headers["If-Modified-Singe"],
+		headers["If-Match"],
+		headers["If-None-Match"],
+		headers["If-Unmodified-Singe"],
+		headers["Range"],
+		c.buildCanonicalizedHeader(headers),
+		canonicalizedResource)
+
+	return canonicalizedString
+}
+
+func (c StorageClient) exec(verb, url string, headers map[string]string, body io.Reader) (*storageResponse, error) {
+	authHeader, err := c.getAuthorizationHeader(verb, url, headers)
+	if err != nil {
+		return nil, err
+	}
+	headers["Authorization"] = authHeader
+
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := http.NewRequest(verb, url, body)
+	for k, v := range headers {
+		req.Header.Add(k, v)
+	}
+	httpClient := http.Client{}
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	statusCode := resp.StatusCode
+	if statusCode >= 400 && statusCode <= 505 {
+		var respBody []byte
+		respBody, err = readResponseBody(resp)
+		if err != nil {
+			return nil, err
+		}
+
+		if len(respBody) == 0 {
+			// no error in response body
+			err = fmt.Errorf("storage: service returned without a response body (%s).", resp.Status)
+		} else {
+			// response contains storage service error object, unmarshal
+			storageErr, errIn := serviceErrFromXml(respBody, resp.StatusCode, resp.Header.Get("x-ms-request-id"))
+			if err != nil { // error unmarshaling the error response
+				err = errIn
+			}
+			err = storageErr
+		}
+		return &storageResponse{
+			statusCode: resp.StatusCode,
+			headers:    resp.Header,
+			body:       ioutil.NopCloser(bytes.NewReader(respBody)), /* restore the body */
+		}, err
+	}
+
+	return &storageResponse{
+		statusCode: resp.StatusCode,
+		headers:    resp.Header,
+		body:       resp.Body}, nil
+}
+
+func readResponseBody(resp *http.Response) ([]byte, error) {
+	defer resp.Body.Close()
+	out, err := ioutil.ReadAll(resp.Body)
+	if err == io.EOF {
+		err = nil
+	}
+	return out, err
+}
+
+func serviceErrFromXml(body []byte, statusCode int, requestId string) (StorageServiceError, error) {
+	var storageErr StorageServiceError
+	if err := xml.Unmarshal(body, &storageErr); err != nil {
+		return storageErr, err
+	}
+	storageErr.StatusCode = statusCode
+	storageErr.RequestId = requestId
+	return storageErr, nil
+}
+
+func (e StorageServiceError) Error() string {
+	return fmt.Sprintf("storage: remote server returned error. StatusCode=%d, ErrorCode=%s, ErrorMessage=%s, RequestId=%s", e.StatusCode, e.Code, e.Message, e.RequestId)
+}
--- a/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/client_test.go
+++ b/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/client_test.go
@ -0,0 +1,203 @@
+package storage
+
+import (
+	"encoding/base64"
+	"net/url"
+	"testing"
+)
+
+func TestGetBaseUrl_Basic_Https(t *testing.T) {
+	cli, err := NewBasicClient("foo", "YmFy")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if cli.apiVersion != DefaultApiVersion {
+		t.Fatalf("Wrong api version. Expected: '%s', got: '%s'", DefaultApiVersion, cli.apiVersion)
+	}
+
+	if err != nil {
+		t.Fatal(err)
+	}
+	output := cli.getBaseUrl("table")
+
+	if expected := "https://foo.table.core.windows.net"; output != expected {
+		t.Fatalf("Wrong base url. Expected: '%s', got: '%s'", expected, output)
+	}
+}
+
+func TestGetBaseUrl_Custom_NoHttps(t *testing.T) {
+	apiVersion := DefaultApiVersion
+	cli, err := NewClient("foo", "YmFy", "core.chinacloudapi.cn", apiVersion, false)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if cli.apiVersion != apiVersion {
+		t.Fatalf("Wrong api version. Expected: '%s', got: '%s'", apiVersion, cli.apiVersion)
+	}
+
+	output := cli.getBaseUrl("table")
+
+	if expected := "http://foo.table.core.chinacloudapi.cn"; output != expected {
+		t.Fatalf("Wrong base url. Expected: '%s', got: '%s'", expected, output)
+	}
+}
+
+func TestGetEndpoint_None(t *testing.T) {
+	cli, err := NewBasicClient("foo", "YmFy")
+	if err != nil {
+		t.Fatal(err)
+	}
+	output := cli.getEndpoint(blobServiceName, "", url.Values{})
+
+	if expected := "https://foo.blob.core.windows.net/"; output != expected {
+		t.Fatalf("Wrong endpoint url. Expected: '%s', got: '%s'", expected, output)
+	}
+}
+
+func TestGetEndpoint_PathOnly(t *testing.T) {
+	cli, err := NewBasicClient("foo", "YmFy")
+	if err != nil {
+		t.Fatal(err)
+	}
+	output := cli.getEndpoint(blobServiceName, "path", url.Values{})
+
+	if expected := "https://foo.blob.core.windows.net/path"; output != expected {
+		t.Fatalf("Wrong endpoint url. Expected: '%s', got: '%s'", expected, output)
+	}
+}
+
+func TestGetEndpoint_ParamsOnly(t *testing.T) {
+	cli, err := NewBasicClient("foo", "YmFy")
+	if err != nil {
+		t.Fatal(err)
+	}
+	params := url.Values{}
+	params.Set("a", "b")
+	params.Set("c", "d")
+	output := cli.getEndpoint(blobServiceName, "", params)
+
+	if expected := "https://foo.blob.core.windows.net/?a=b&c=d"; output != expected {
+		t.Fatalf("Wrong endpoint url. Expected: '%s', got: '%s'", expected, output)
+	}
+}
+
+func TestGetEndpoint_Mixed(t *testing.T) {
+	cli, err := NewBasicClient("foo", "YmFy")
+	if err != nil {
+		t.Fatal(err)
+	}
+	params := url.Values{}
+	params.Set("a", "b")
+	params.Set("c", "d")
+	output := cli.getEndpoint(blobServiceName, "path", params)
+
+	if expected := "https://foo.blob.core.windows.net/path?a=b&c=d"; output != expected {
+		t.Fatalf("Wrong endpoint url. Expected: '%s', got: '%s'", expected, output)
+	}
+}
+
+func Test_getStandardHeaders(t *testing.T) {
+	cli, err := NewBasicClient("foo", "YmFy")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	headers := cli.getStandardHeaders()
+	if len(headers) != 2 {
+		t.Fatal("Wrong standard header count")
+	}
+	if v, ok := headers["x-ms-version"]; !ok || v != cli.apiVersion {
+		t.Fatal("Wrong version header")
+	}
+	if _, ok := headers["x-ms-date"]; !ok {
+		t.Fatal("Missing date header")
+	}
+}
+
+func Test_buildCanonicalizedResource(t *testing.T) {
+	cli, err := NewBasicClient("foo", "YmFy")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	type test struct{ url, expected string }
+	tests := []test{
+		{"https://foo.blob.core.windows.net/path?a=b&c=d", "/foo/path\na:b\nc:d"},
+		{"https://foo.blob.core.windows.net/?comp=list", "/foo/\ncomp:list"},
+		{"https://foo.blob.core.windows.net/cnt/blob", "/foo/cnt/blob"},
+	}
+
+	for _, i := range tests {
+		if out, err := cli.buildCanonicalizedResource(i.url); err != nil {
+			t.Fatal(err)
+		} else if out != i.expected {
+			t.Fatalf("Wrong canonicalized resource. Expected:\n'%s', Got:\n'%s'", i.expected, out)
+		}
+	}
+}
+
+func Test_buildCanonicalizedHeader(t *testing.T) {
+	cli, err := NewBasicClient("foo", "YmFy")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	type test struct {
+		headers  map[string]string
+		expected string
+	}
+	tests := []test{
+		{map[string]string{}, ""},
+		{map[string]string{"x-ms-foo": "bar"}, "x-ms-foo:bar"},
+		{map[string]string{"foo:": "bar"}, ""},
+		{map[string]string{"foo:": "bar", "x-ms-foo": "bar"}, "x-ms-foo:bar"},
+		{map[string]string{
+			"x-ms-version":   "9999-99-99",
+			"x-ms-blob-type": "BlockBlob"}, "x-ms-blob-type:BlockBlob\nx-ms-version:9999-99-99"}}
+
+	for _, i := range tests {
+		if out := cli.buildCanonicalizedHeader(i.headers); out != i.expected {
+			t.Fatalf("Wrong canonicalized resource. Expected:\n'%s', Got:\n'%s'", i.expected, out)
+		}
+	}
+}
+
+func TestReturnsStorageServiceError(t *testing.T) {
+	cli, err := getBlobClient()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// attempt to delete a nonexisting container
+	_, err = cli.deleteContainer(randContainer())
+	if err == nil {
+		t.Fatal("Service has not returned an error")
+	}
+
+	if v, ok := err.(StorageServiceError); !ok {
+		t.Fatal("Cannot assert to specific error")
+	} else if v.StatusCode != 404 {
+		t.Fatalf("Expected status:%d, got: %d", 404, v.StatusCode)
+	} else if v.Code != "ContainerNotFound" {
+		t.Fatalf("Expected code: %s, got: %s", "ContainerNotFound", v.Code)
+	} else if v.RequestId == "" {
+		t.Fatalf("RequestId does not exist")
+	}
+}
+
+func Test_createAuthorizationHeader(t *testing.T) {
+	key := base64.StdEncoding.EncodeToString([]byte("bar"))
+	cli, err := NewBasicClient("foo", key)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	canonicalizedString := `foobarzoo`
+	expected := `SharedKey foo:h5U0ATVX6SpbFX1H6GNuxIMeXXCILLoIvhflPtuQZ30=`
+
+	if out := cli.createAuthorizationHeader(canonicalizedString); out != expected {
+		t.Fatalf("Wrong authorization header. Expected: '%s', Got:'%s'", expected, out)
+	}
+}
--- a/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/util.go
+++ b/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/util.go
@ -0,0 +1,63 @@
+package storage
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/xml"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+func (c StorageClient) computeHmac256(message string) string {
+	h := hmac.New(sha256.New, c.accountKey)
+	h.Write([]byte(message))
+	return base64.StdEncoding.EncodeToString(h.Sum(nil))
+}
+
+func currentTimeRfc1123Formatted() string {
+	return timeRfc1123Formatted(time.Now().UTC())
+}
+
+func timeRfc1123Formatted(t time.Time) string {
+	return t.Format(http.TimeFormat)
+}
+
+func mergeParams(v1, v2 url.Values) url.Values {
+	out := url.Values{}
+	for k, v := range v1 {
+		out[k] = v
+	}
+	for k, v := range v2 {
+		vals, ok := out[k]
+		if ok {
+			vals = append(vals, v...)
+			out[k] = vals
+		} else {
+			out[k] = v
+		}
+	}
+	return out
+}
+
+func prepareBlockListRequest(blocks []Block) string {
+	s := `<?xml version="1.0" encoding="utf-8"?><BlockList>`
+	for _, v := range blocks {
+		s += fmt.Sprintf("<%s>%s</%s>", v.Status, v.Id, v.Status)
+	}
+	s += `</BlockList>`
+	return s
+}
+
+func xmlUnmarshal(body io.ReadCloser, v interface{}) error {
+	data, err := ioutil.ReadAll(body)
+	if err != nil {
+		return err
+	}
+	defer body.Close()
+	return xml.Unmarshal(data, v)
+}
--- a/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/util_test.go
+++ b/Godeps/_workspace/src/github.com/MSOpenTech/azure-sdk-for-go/clients/storage/util_test.go
@ -0,0 +1,80 @@
+package storage
+
+import (
+	"io/ioutil"
+	"net/url"
+	"reflect"
+	"strings"
+	"testing"
+	"time"
+)
+
+func Test_timeRfc1123Formatted(t *testing.T) {
+	now := time.Now().UTC()
+
+	expectedLayout := "Mon, 02 Jan 2006 15:04:05 GMT"
+	expected := now.Format(expectedLayout)
+
+	if output := timeRfc1123Formatted(now); output != expected {
+		t.Errorf("Expected: %s, got: %s", expected, output)
+	}
+}
+
+func Test_mergeParams(t *testing.T) {
+	v1 := url.Values{
+		"k1": {"v1"},
+		"k2": {"v2"}}
+	v2 := url.Values{
+		"k1": {"v11"},
+		"k3": {"v3"}}
+
+	out := mergeParams(v1, v2)
+	if v := out.Get("k1"); v != "v1" {
+		t.Errorf("Wrong value for k1: %s", v)
+	}
+
+	if v := out.Get("k2"); v != "v2" {
+		t.Errorf("Wrong value for k2: %s", v)
+	}
+
+	if v := out.Get("k3"); v != "v3" {
+		t.Errorf("Wrong value for k3: %s", v)
+	}
+
+	if v := out["k1"]; !reflect.DeepEqual(v, []string{"v1", "v11"}) {
+		t.Errorf("Wrong multi-value for k1: %s", v)
+	}
+}
+
+func Test_prepareBlockListRequest(t *testing.T) {
+	empty := []Block{}
+	expected := `<?xml version="1.0" encoding="utf-8"?><BlockList></BlockList>`
+	if out := prepareBlockListRequest(empty); expected != out {
+		t.Errorf("Wrong block list. Expected: '%s', got: '%s'", expected, out)
+	}
+
+	blocks := []Block{{"foo", BlockStatusLatest}, {"bar", BlockStatusUncommitted}}
+	expected = `<?xml version="1.0" encoding="utf-8"?><BlockList><Latest>foo</Latest><Uncommitted>bar</Uncommitted></BlockList>`
+	if out := prepareBlockListRequest(blocks); expected != out {
+		t.Errorf("Wrong block list. Expected: '%s', got: '%s'", expected, out)
+	}
+}
+
+func Test_xmlUnmarshal(t *testing.T) {
+	xml := `<?xml version="1.0" encoding="utf-8"?>
+	<Blob>
+		<Name>myblob</Name>
+	</Blob>`
+
+	body := ioutil.NopCloser(strings.NewReader(xml))
+
+	var blob Blob
+	err := xmlUnmarshal(body, &blob)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if blob.Name != "myblob" {
+		t.Fatal("Got wrong value")
+	}
+}