package storage import ( "fmt" "net/http" "net/url" "strconv" ) // Share represents an Azure file share. type Share struct { fsc *FileServiceClient Name string `xml:"Name"` Properties ShareProperties `xml:"Properties"` Metadata map[string]string } // ShareProperties contains various properties of a share. type ShareProperties struct { LastModified string `xml:"Last-Modified"` Etag string `xml:"Etag"` Quota int `xml:"Quota"` } // builds the complete path for this share object. func (s *Share) buildPath() string { return fmt.Sprintf("/%s", s.Name) } // Create this share under the associated account. // If a share with the same name already exists, the operation fails. // // See https://msdn.microsoft.com/en-us/library/azure/dn167008.aspx func (s *Share) Create() error { headers, err := s.fsc.createResource(s.buildPath(), resourceShare, nil, mergeMDIntoExtraHeaders(s.Metadata, nil), []int{http.StatusCreated}) if err != nil { return err } s.updateEtagAndLastModified(headers) return nil } // CreateIfNotExists creates this share under the associated account if // it does not exist. Returns true if the share is newly created or false if // the share already exists. // // See https://msdn.microsoft.com/en-us/library/azure/dn167008.aspx func (s *Share) CreateIfNotExists() (bool, error) { resp, err := s.fsc.createResourceNoClose(s.buildPath(), resourceShare, nil, nil) if resp != nil { defer readAndCloseBody(resp.body) if resp.statusCode == http.StatusCreated || resp.statusCode == http.StatusConflict { if resp.statusCode == http.StatusCreated { s.updateEtagAndLastModified(resp.headers) return true, nil } return false, s.FetchAttributes() } } return false, err } // Delete marks this share for deletion. The share along with any files // and directories contained within it are later deleted during garbage // collection. If the share does not exist the operation fails // // See https://msdn.microsoft.com/en-us/library/azure/dn689090.aspx func (s *Share) Delete() error { return s.fsc.deleteResource(s.buildPath(), resourceShare) } // DeleteIfExists operation marks this share for deletion if it exists. // // See https://msdn.microsoft.com/en-us/library/azure/dn689090.aspx func (s *Share) DeleteIfExists() (bool, error) { resp, err := s.fsc.deleteResourceNoClose(s.buildPath(), resourceShare) if resp != nil { defer readAndCloseBody(resp.body) if resp.statusCode == http.StatusAccepted || resp.statusCode == http.StatusNotFound { return resp.statusCode == http.StatusAccepted, nil } } return false, err } // Exists returns true if this share already exists // on the storage account, otherwise returns false. func (s *Share) Exists() (bool, error) { exists, headers, err := s.fsc.resourceExists(s.buildPath(), resourceShare) if exists { s.updateEtagAndLastModified(headers) s.updateQuota(headers) } return exists, err } // FetchAttributes retrieves metadata and properties for this share. func (s *Share) FetchAttributes() error { headers, err := s.fsc.getResourceHeaders(s.buildPath(), compNone, resourceShare, http.MethodHead) if err != nil { return err } s.updateEtagAndLastModified(headers) s.updateQuota(headers) s.Metadata = getMetadataFromHeaders(headers) return nil } // GetRootDirectoryReference returns a Directory object at the root of this share. func (s *Share) GetRootDirectoryReference() *Directory { return &Directory{ fsc: s.fsc, share: s, } } // ServiceClient returns the FileServiceClient associated with this share. func (s *Share) ServiceClient() *FileServiceClient { return s.fsc } // SetMetadata replaces the metadata for this share. // // Some keys may be converted to Camel-Case before sending. All keys // are returned in lower case by GetShareMetadata. HTTP header names // are case-insensitive so case munging should not matter to other // applications either. // // See https://msdn.microsoft.com/en-us/library/azure/dd179414.aspx func (s *Share) SetMetadata() error { headers, err := s.fsc.setResourceHeaders(s.buildPath(), compMetadata, resourceShare, mergeMDIntoExtraHeaders(s.Metadata, nil)) if err != nil { return err } s.updateEtagAndLastModified(headers) return nil } // SetProperties sets system properties for this share. // // Some keys may be converted to Camel-Case before sending. All keys // are returned in lower case by SetShareProperties. HTTP header names // are case-insensitive so case munging should not matter to other // applications either. // // See https://msdn.microsoft.com/en-us/library/azure/mt427368.aspx func (s *Share) SetProperties() error { if s.Properties.Quota < 1 || s.Properties.Quota > 5120 { return fmt.Errorf("invalid value %v for quota, valid values are [1, 5120]", s.Properties.Quota) } headers, err := s.fsc.setResourceHeaders(s.buildPath(), compProperties, resourceShare, map[string]string{ "x-ms-share-quota": strconv.Itoa(s.Properties.Quota), }) if err != nil { return err } s.updateEtagAndLastModified(headers) return nil } // updates Etag and last modified date func (s *Share) updateEtagAndLastModified(headers http.Header) { s.Properties.Etag = headers.Get("Etag") s.Properties.LastModified = headers.Get("Last-Modified") } // updates quota value func (s *Share) updateQuota(headers http.Header) { quota, err := strconv.Atoi(headers.Get("x-ms-share-quota")) if err == nil { s.Properties.Quota = quota } } // URL gets the canonical URL to this share. This method does not create a publicly accessible // URL if the share is private and this method does not check if the share exists. func (s *Share) URL() string { return s.fsc.client.getEndpoint(fileServiceName, s.buildPath(), url.Values{}) }