2017-07-25 00:38:41 +02:00
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package storage
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2017-09-30 16:27:27 +02:00
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// Copyright 2017 Microsoft Corporation
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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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2017-07-25 00:38:41 +02:00
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import (
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"fmt"
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"net/http"
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"net/url"
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"strconv"
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)
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// Share represents an Azure file share.
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type Share struct {
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fsc *FileServiceClient
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Name string `xml:"Name"`
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Properties ShareProperties `xml:"Properties"`
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Metadata map[string]string
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}
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// ShareProperties contains various properties of a share.
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type ShareProperties struct {
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LastModified string `xml:"Last-Modified"`
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Etag string `xml:"Etag"`
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Quota int `xml:"Quota"`
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}
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// builds the complete path for this share object.
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func (s *Share) buildPath() string {
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return fmt.Sprintf("/%s", s.Name)
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}
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// Create this share under the associated account.
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// If a share with the same name already exists, the operation fails.
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//
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// See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/Create-Share
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func (s *Share) Create(options *FileRequestOptions) error {
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extraheaders := map[string]string{}
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if s.Properties.Quota > 0 {
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extraheaders["x-ms-share-quota"] = strconv.Itoa(s.Properties.Quota)
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}
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params := prepareOptions(options)
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headers, err := s.fsc.createResource(s.buildPath(), resourceShare, params, mergeMDIntoExtraHeaders(s.Metadata, extraheaders), []int{http.StatusCreated})
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if err != nil {
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return err
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}
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s.updateEtagAndLastModified(headers)
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return nil
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}
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// CreateIfNotExists creates this share under the associated account if
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// it does not exist. Returns true if the share is newly created or false if
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// the share already exists.
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//
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// See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/Create-Share
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func (s *Share) CreateIfNotExists(options *FileRequestOptions) (bool, error) {
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extraheaders := map[string]string{}
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if s.Properties.Quota > 0 {
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extraheaders["x-ms-share-quota"] = strconv.Itoa(s.Properties.Quota)
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}
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params := prepareOptions(options)
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resp, err := s.fsc.createResourceNoClose(s.buildPath(), resourceShare, params, extraheaders)
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if resp != nil {
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defer readAndCloseBody(resp.body)
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if resp.statusCode == http.StatusCreated || resp.statusCode == http.StatusConflict {
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if resp.statusCode == http.StatusCreated {
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s.updateEtagAndLastModified(resp.headers)
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return true, nil
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}
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return false, s.FetchAttributes(nil)
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}
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}
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return false, err
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}
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// Delete marks this share for deletion. The share along with any files
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// and directories contained within it are later deleted during garbage
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// collection. If the share does not exist the operation fails
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//
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// See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/Delete-Share
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func (s *Share) Delete(options *FileRequestOptions) error {
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return s.fsc.deleteResource(s.buildPath(), resourceShare, options)
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}
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// DeleteIfExists operation marks this share for deletion if it exists.
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//
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// See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/Delete-Share
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func (s *Share) DeleteIfExists(options *FileRequestOptions) (bool, error) {
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resp, err := s.fsc.deleteResourceNoClose(s.buildPath(), resourceShare, options)
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if resp != nil {
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defer readAndCloseBody(resp.body)
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if resp.statusCode == http.StatusAccepted || resp.statusCode == http.StatusNotFound {
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return resp.statusCode == http.StatusAccepted, nil
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}
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}
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return false, err
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}
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// Exists returns true if this share already exists
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// on the storage account, otherwise returns false.
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func (s *Share) Exists() (bool, error) {
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exists, headers, err := s.fsc.resourceExists(s.buildPath(), resourceShare)
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if exists {
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s.updateEtagAndLastModified(headers)
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s.updateQuota(headers)
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}
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return exists, err
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}
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// FetchAttributes retrieves metadata and properties for this share.
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// See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/get-share-properties
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func (s *Share) FetchAttributes(options *FileRequestOptions) error {
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params := prepareOptions(options)
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headers, err := s.fsc.getResourceHeaders(s.buildPath(), compNone, resourceShare, params, http.MethodHead)
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if err != nil {
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return err
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}
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s.updateEtagAndLastModified(headers)
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s.updateQuota(headers)
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s.Metadata = getMetadataFromHeaders(headers)
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return nil
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}
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// GetRootDirectoryReference returns a Directory object at the root of this share.
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func (s *Share) GetRootDirectoryReference() *Directory {
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return &Directory{
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fsc: s.fsc,
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share: s,
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}
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}
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// ServiceClient returns the FileServiceClient associated with this share.
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func (s *Share) ServiceClient() *FileServiceClient {
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return s.fsc
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}
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// SetMetadata replaces the metadata for this share.
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//
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// Some keys may be converted to Camel-Case before sending. All keys
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// are returned in lower case by GetShareMetadata. HTTP header names
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// are case-insensitive so case munging should not matter to other
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// applications either.
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//
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// See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/set-share-metadata
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func (s *Share) SetMetadata(options *FileRequestOptions) error {
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headers, err := s.fsc.setResourceHeaders(s.buildPath(), compMetadata, resourceShare, mergeMDIntoExtraHeaders(s.Metadata, nil), options)
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if err != nil {
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return err
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}
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s.updateEtagAndLastModified(headers)
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return nil
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}
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// SetProperties sets system properties for this share.
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//
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// Some keys may be converted to Camel-Case before sending. All keys
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// are returned in lower case by SetShareProperties. HTTP header names
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// are case-insensitive so case munging should not matter to other
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// applications either.
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//
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// See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/Set-Share-Properties
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func (s *Share) SetProperties(options *FileRequestOptions) error {
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extraheaders := map[string]string{}
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if s.Properties.Quota > 0 {
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if s.Properties.Quota > 5120 {
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return fmt.Errorf("invalid value %v for quota, valid values are [1, 5120]", s.Properties.Quota)
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}
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extraheaders["x-ms-share-quota"] = strconv.Itoa(s.Properties.Quota)
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}
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headers, err := s.fsc.setResourceHeaders(s.buildPath(), compProperties, resourceShare, extraheaders, options)
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if err != nil {
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return err
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}
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s.updateEtagAndLastModified(headers)
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return nil
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}
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// updates Etag and last modified date
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func (s *Share) updateEtagAndLastModified(headers http.Header) {
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s.Properties.Etag = headers.Get("Etag")
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s.Properties.LastModified = headers.Get("Last-Modified")
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}
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// updates quota value
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func (s *Share) updateQuota(headers http.Header) {
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quota, err := strconv.Atoi(headers.Get("x-ms-share-quota"))
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if err == nil {
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s.Properties.Quota = quota
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}
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}
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// URL gets the canonical URL to this share. This method does not create a publicly accessible
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// URL if the share is private and this method does not check if the share exists.
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func (s *Share) URL() string {
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return s.fsc.client.getEndpoint(fileServiceName, s.buildPath(), url.Values{})
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}
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