1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_API_UTIL_INTERFACE_H_ 6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_API_UTIL_INTERFACE_H_ 7 8 #include <string> 9 10 #include "base/callback_forward.h" 11 #include "chrome/browser/google_apis/gdata_errorcode.h" 12 #include "chrome/browser/google_apis/gdata_wapi_parser.h" 13 14 class GURL; 15 class Profile; 16 17 namespace base { 18 class Time; 19 } 20 21 namespace google_apis { 22 class DriveUploaderInterface; 23 } 24 25 namespace webkit_blob { 26 class ScopedFile; 27 } 28 29 namespace sync_file_system { 30 namespace drive_backend { 31 32 class APIUtilObserver { 33 public: 34 APIUtilObserver() {} 35 virtual ~APIUtilObserver() {} 36 virtual void OnAuthenticated() = 0; 37 virtual void OnNetworkConnected() = 0; 38 39 private: 40 DISALLOW_COPY_AND_ASSIGN(APIUtilObserver); 41 }; 42 43 // The implementation of this class is responsible for talking to the Drive 44 // service to get and put Drive directories, files and metadata. 45 // This class is owned by DriveFileSyncService. 46 class APIUtilInterface { 47 public: 48 typedef base::Callback<void(google_apis::GDataErrorCode error)> 49 GDataErrorCallback; 50 typedef base::Callback<void(google_apis::GDataErrorCode error, 51 const std::string& file_md5, 52 int64 file_size, 53 const base::Time& last_updated, 54 scoped_ptr<webkit_blob::ScopedFile> downloaded)> 55 DownloadFileCallback; 56 typedef base::Callback<void(google_apis::GDataErrorCode error, 57 const std::string& resource_id, 58 const std::string& file_md5)> UploadFileCallback; 59 typedef base::Callback< 60 void(google_apis::GDataErrorCode error, const std::string& resource_id)> 61 ResourceIdCallback; 62 typedef base::Callback<void(google_apis::GDataErrorCode error, 63 int64 changestamp)> ChangeStampCallback; 64 typedef base::Callback<void(google_apis::GDataErrorCode error, 65 scoped_ptr<google_apis::ResourceList> feed)> 66 ResourceListCallback; 67 typedef base::Callback<void(google_apis::GDataErrorCode error, 68 scoped_ptr<google_apis::ResourceEntry> entry)> 69 ResourceEntryCallback; 70 71 APIUtilInterface() {} 72 virtual ~APIUtilInterface() {} 73 74 virtual void AddObserver(APIUtilObserver* observer) = 0; 75 virtual void RemoveObserver(APIUtilObserver* observer) = 0; 76 77 // Fetches Resource ID of the directory where we should place all files to 78 // sync. Upon completion, invokes |callback|. 79 // If the directory does not exist on the server this also creates 80 // the directory. 81 // 82 // Returns HTTP_SUCCESS if the directory already exists. 83 // Returns HTTP_CREATED if the directory was not found and created. 84 virtual void GetDriveDirectoryForSyncRoot( 85 const ResourceIdCallback& callback) = 0; 86 87 // Fetches Resource ID of the directory for the |origin|. 88 // Upon completion, invokes |callback|. 89 // If the directory does not exist on the server this also creates 90 // the directory. 91 // 92 // Returns HTTP_SUCCESS if the directory already exists. 93 // Returns HTTP_CREATED if the directory was not found and created. 94 virtual void GetDriveDirectoryForOrigin( 95 const std::string& sync_root_resource_id, 96 const GURL& origin, 97 const ResourceIdCallback& callback) = 0; 98 99 // Fetches the largest changestamp for the signed-in account. 100 // Upon completion, invokes |callback|. 101 virtual void GetLargestChangeStamp(const ChangeStampCallback& callback) = 0; 102 103 // Fetches the resource entry for the file identified by |resource_id|. 104 // Upon completion, invokes |callback|. 105 virtual void GetResourceEntry(const std::string& resource_id, 106 const ResourceEntryCallback& callback) = 0; 107 108 // Lists files in the directory identified by |resource_id|. 109 // Upon completion, invokes |callback|. 110 // The result may be chunked and may have successive results. The caller needs 111 // to call ContunueListing with the result of GetNextFeedURL to get complete 112 // list of files. 113 virtual void ListFiles(const std::string& directory_resource_id, 114 const ResourceListCallback& callback) = 0; 115 116 // Lists changes that happened after |start_changestamp|. 117 // Upon completion, invokes |callback|. 118 // The result may be chunked and may have successive results. The caller needs 119 // to call ContunueListing with the result of GetNextFeedURL to get complete 120 // list of changes. 121 virtual void ListChanges(int64 start_changestamp, 122 const ResourceListCallback& callback) = 0; 123 124 // Fetches the next chunk of ResourceList identified by |feed_url|. 125 // Upon completion, invokes |callback|. 126 virtual void ContinueListing(const GURL& feed_url, 127 const ResourceListCallback& callback) = 0; 128 129 // Downloads the file identified by |resource_id| from Drive to 130 // |local_file_path|. 131 // |local_file_md5| represents the hash value of the local file to be updated. 132 // If |local_file_md5| is equal to remote file's value, cancels the download 133 // and invokes |callback| with GDataErrorCode::HTTP_NOT_MODIFIED immediately. 134 // When there is no local file to be updated, |local_file_md5| should be 135 // empty. 136 virtual void DownloadFile(const std::string& resource_id, 137 const std::string& local_file_md5, 138 const DownloadFileCallback& callback) = 0; 139 140 // Uploads the new file |local_file_path| with specified |title| into the 141 // directory identified by |directory_resource_id|. 142 // Upon completion, invokes |callback| and returns HTTP_CREATED if the file 143 // is created. 144 virtual void UploadNewFile(const std::string& directory_resource_id, 145 const base::FilePath& local_file_path, 146 const std::string& title, 147 const UploadFileCallback& callback) = 0; 148 149 // Uploads the existing file identified by |local_file_path|. 150 // |remote_file_md5| represents the expected hash value of the file to be 151 // updated on Drive. If |remote_file_md5| is different from the actual value, 152 // cancels the upload and invokes |callback| with 153 // GDataErrorCode::HTTP_CONFLICT immediately. 154 // Returns HTTP_SUCCESS if the file uploaded successfully. 155 virtual void UploadExistingFile(const std::string& resource_id, 156 const std::string& remote_file_md5, 157 const base::FilePath& local_file_path, 158 const UploadFileCallback& callback) = 0; 159 160 // Creates a new directory with specified |title| into the directory 161 // identified by |parent_resource_id|. 162 // Upon completion, invokes |callback| and returns HTTP_CREATED if 163 // the directory is created. 164 virtual void CreateDirectory(const std::string& parent_resource_id, 165 const std::string& title, 166 const ResourceIdCallback& callback) = 0; 167 168 // Returns true if the user is authenticated. 169 virtual bool IsAuthenticated() const = 0; 170 171 // Deletes the file identified by |resource_id|. 172 // A directory is considered a file and will cause a recursive delete if 173 // given as the |resource_id|. 174 // TODO(tzik): Rename this function to DeleteResource. 175 // 176 // |remote_file_md5| represents the expected hash value of the file to be 177 // deleted from Drive. If |remote_file_md5| is empty, then it's implied that 178 // the file should be deleted on the remote side regardless. If 179 // |remote_file_md5| is not empty and is different from the actual value, 180 // the deletion operation is canceled and the |callback| with 181 // GDataErrorCode::HTTP_CONFLICT is invoked immediately. 182 virtual void DeleteFile(const std::string& resource_id, 183 const std::string& remote_file_md5, 184 const GDataErrorCallback& callback) = 0; 185 186 // Converts |resource_id| to corresponing resource link. 187 virtual GURL ResourceIdToResourceLink( 188 const std::string& resource_id) const = 0; 189 190 // Ensures the sync root directory is not in 'My Drive'. Even if the directory 191 // is in directories other than 'My Drive', it will not be removed from there. 192 virtual void EnsureSyncRootIsNotInMyDrive( 193 const std::string& sync_root_resource_id) = 0; 194 195 private: 196 DISALLOW_COPY_AND_ASSIGN(APIUtilInterface); 197 }; 198 199 } // namespace drive_backend 200 } // namespace sync_file_system 201 202 #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_API_UTIL_INTERFACE_H_ 203
