content/child/fileapi/file_system_dispatcher.cc

   1 // Copyright (c) 2012 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 #include "content/child/fileapi/file_system_dispatcher.h"
   6
   7 #include "base/callback.h"
   8 #include "base/files/file_util.h"
   9 #include "base/message_loop/message_loop_proxy.h"
  10 #include "base/process/process.h"
  11 #include "content/child/child_thread_impl.h"
  12 #include "content/common/fileapi/file_system_messages.h"
  13 #include "storage/common/fileapi/file_system_info.h"
  14
  15 namespace content {
  16
  17 class FileSystemDispatcher::CallbackDispatcher {
  18  public:
  19   typedef CallbackDispatcher self;
  20   typedef FileSystemDispatcher::StatusCallback StatusCallback;
  21   typedef FileSystemDispatcher::MetadataCallback MetadataCallback;
  22   typedef FileSystemDispatcher::ReadDirectoryCallback ReadDirectoryCallback;
  23   typedef FileSystemDispatcher::OpenFileSystemCallback OpenFileSystemCallback;
  24   typedef FileSystemDispatcher::ResolveURLCallback ResolveURLCallback;
  25   typedef FileSystemDispatcher::WriteCallback WriteCallback;
  26   typedef FileSystemDispatcher::OpenFileCallback OpenFileCallback;
  27
  28   static CallbackDispatcher* Create(const StatusCallback& callback) {
  29     CallbackDispatcher* dispatcher = new CallbackDispatcher;
  30     dispatcher->status_callback_ = callback;
  31     dispatcher->error_callback_ = callback;
  32     return dispatcher;
  33   }
  34   static CallbackDispatcher* Create(const MetadataCallback& callback,
  35                                     const StatusCallback& error_callback) {
  36     CallbackDispatcher* dispatcher = new CallbackDispatcher;
  37     dispatcher->metadata_callback_ = callback;
  38     dispatcher->error_callback_ = error_callback;
  39     return dispatcher;
  40   }
  41   static CallbackDispatcher* Create(const CreateSnapshotFileCallback& callback,
  42                                     const StatusCallback& error_callback) {
  43     CallbackDispatcher* dispatcher = new CallbackDispatcher;
  44     dispatcher->snapshot_callback_ = callback;
  45     dispatcher->error_callback_ = error_callback;
  46     return dispatcher;
  47   }
  48   static CallbackDispatcher* Create(const ReadDirectoryCallback& callback,
  49                                     const StatusCallback& error_callback) {
  50     CallbackDispatcher* dispatcher = new CallbackDispatcher;
  51     dispatcher->directory_callback_ = callback;
  52     dispatcher->error_callback_ = error_callback;
  53     return dispatcher;
  54   }
  55   static CallbackDispatcher* Create(const OpenFileSystemCallback& callback,
  56                                     const StatusCallback& error_callback) {
  57     CallbackDispatcher* dispatcher = new CallbackDispatcher;
  58     dispatcher->filesystem_callback_ = callback;
  59     dispatcher->error_callback_ = error_callback;
  60     return dispatcher;
  61   }
  62   static CallbackDispatcher* Create(const ResolveURLCallback& callback,
  63                                     const StatusCallback& error_callback) {
  64     CallbackDispatcher* dispatcher = new CallbackDispatcher;
  65     dispatcher->resolve_callback_ = callback;
  66     dispatcher->error_callback_ = error_callback;
  67     return dispatcher;
  68   }
  69   static CallbackDispatcher* Create(const WriteCallback& callback,
  70                                     const StatusCallback& error_callback) {
  71     CallbackDispatcher* dispatcher = new CallbackDispatcher;
  72     dispatcher->write_callback_ = callback;
  73     dispatcher->error_callback_ = error_callback;
  74     return dispatcher;
  75   }
  76
  77   ~CallbackDispatcher() {}
  78
  79   void DidSucceed() {
  80     status_callback_.Run(base::File::FILE_OK);
  81   }
  82
  83   void DidFail(base::File::Error error_code) {
  84     error_callback_.Run(error_code);
  85   }
  86
  87   void DidReadMetadata(
  88       const base::File::Info& file_info) {
  89     metadata_callback_.Run(file_info);
  90   }
  91
  92   void DidCreateSnapshotFile(
  93       const base::File::Info& file_info,
  94       const base::FilePath& platform_path,
  95       int request_id) {
  96     snapshot_callback_.Run(file_info, platform_path, request_id);
  97   }
  98
  99   void DidReadDirectory(const std::vector<storage::DirectoryEntry>& entries,
 100                         bool has_more) {
 101     directory_callback_.Run(entries, has_more);
 102   }
 103
 104   void DidOpenFileSystem(const std::string& name,
 105                          const GURL& root) {
 106     filesystem_callback_.Run(name, root);
 107   }
 108
 109   void DidResolveURL(const storage::FileSystemInfo& info,
 110                      const base::FilePath& file_path,
 111                      bool is_directory) {
 112     resolve_callback_.Run(info, file_path, is_directory);
 113   }
 114
 115   void DidWrite(int64 bytes, bool complete) {
 116     write_callback_.Run(bytes, complete);
 117   }
 118
 119  private:
 120   CallbackDispatcher() {}
 121
 122   StatusCallback status_callback_;
 123   MetadataCallback metadata_callback_;
 124   CreateSnapshotFileCallback snapshot_callback_;
 125   ReadDirectoryCallback directory_callback_;
 126   OpenFileSystemCallback filesystem_callback_;
 127   ResolveURLCallback resolve_callback_;
 128   WriteCallback write_callback_;
 129
 130   StatusCallback error_callback_;
 131
 132   DISALLOW_COPY_AND_ASSIGN(CallbackDispatcher);
 133 };
 134
 135 FileSystemDispatcher::FileSystemDispatcher() {
 136 }
 137
 138 FileSystemDispatcher::~FileSystemDispatcher() {
 139   // Make sure we fire all the remaining callbacks.
 140   for (IDMap<CallbackDispatcher, IDMapOwnPointer>::iterator
 141            iter(&dispatchers_); !iter.IsAtEnd(); iter.Advance()) {
 142     int request_id = iter.GetCurrentKey();
 143     CallbackDispatcher* dispatcher = iter.GetCurrentValue();
 144     DCHECK(dispatcher);
 145     dispatcher->DidFail(base::File::FILE_ERROR_ABORT);
 146     dispatchers_.Remove(request_id);
 147   }
 148 }
 149
 150 bool FileSystemDispatcher::OnMessageReceived(const IPC::Message& msg) {
 151   bool handled = true;
 152   IPC_BEGIN_MESSAGE_MAP(FileSystemDispatcher, msg)
 153     IPC_MESSAGE_HANDLER(FileSystemMsg_DidOpenFileSystem, OnDidOpenFileSystem)
 154     IPC_MESSAGE_HANDLER(FileSystemMsg_DidResolveURL, OnDidResolveURL)
 155     IPC_MESSAGE_HANDLER(FileSystemMsg_DidSucceed, OnDidSucceed)
 156     IPC_MESSAGE_HANDLER(FileSystemMsg_DidReadDirectory, OnDidReadDirectory)
 157     IPC_MESSAGE_HANDLER(FileSystemMsg_DidReadMetadata, OnDidReadMetadata)
 158     IPC_MESSAGE_HANDLER(FileSystemMsg_DidCreateSnapshotFile,
 159                         OnDidCreateSnapshotFile)
 160     IPC_MESSAGE_HANDLER(FileSystemMsg_DidFail, OnDidFail)
 161     IPC_MESSAGE_HANDLER(FileSystemMsg_DidWrite, OnDidWrite)
 162     IPC_MESSAGE_UNHANDLED(handled = false)
 163   IPC_END_MESSAGE_MAP()
 164   return handled;
 165 }
 166
 167 void FileSystemDispatcher::OpenFileSystem(
 168     const GURL& origin_url,
 169     storage::FileSystemType type,
 170     const OpenFileSystemCallback& success_callback,
 171     const StatusCallback& error_callback) {
 172   int request_id = dispatchers_.Add(
 173       CallbackDispatcher::Create(success_callback, error_callback));
 174   ChildThreadImpl::current()->Send(new FileSystemHostMsg_OpenFileSystem(
 175       request_id, origin_url, type));
 176 }
 177
 178 void FileSystemDispatcher::ResolveURL(
 179     const GURL& filesystem_url,
 180     const ResolveURLCallback& success_callback,
 181     const StatusCallback& error_callback) {
 182   int request_id = dispatchers_.Add(
 183       CallbackDispatcher::Create(success_callback, error_callback));
 184   ChildThreadImpl::current()->Send(new FileSystemHostMsg_ResolveURL(
 185           request_id, filesystem_url));
 186 }
 187
 188 void FileSystemDispatcher::DeleteFileSystem(const GURL& origin_url,
 189                                             storage::FileSystemType type,
 190                                             const StatusCallback& callback) {
 191   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 192   ChildThreadImpl::current()->Send(new FileSystemHostMsg_DeleteFileSystem(
 193           request_id, origin_url, type));
 194 }
 195
 196 void FileSystemDispatcher::Move(
 197     const GURL& src_path,
 198     const GURL& dest_path,
 199     const StatusCallback& callback) {
 200   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 201   ChildThreadImpl::current()->Send(new FileSystemHostMsg_Move(
 202           request_id, src_path, dest_path));
 203 }
 204
 205 void FileSystemDispatcher::Copy(
 206     const GURL& src_path,
 207     const GURL& dest_path,
 208     const StatusCallback& callback) {
 209   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 210   ChildThreadImpl::current()->Send(new FileSystemHostMsg_Copy(
 211       request_id, src_path, dest_path));
 212 }
 213
 214 void FileSystemDispatcher::Remove(
 215     const GURL& path,
 216     bool recursive,
 217     const StatusCallback& callback) {
 218   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 219   ChildThreadImpl::current()->Send(
 220       new FileSystemHostMsg_Remove(request_id, path, recursive));
 221 }
 222
 223 void FileSystemDispatcher::ReadMetadata(
 224     const GURL& path,
 225     const MetadataCallback& success_callback,
 226     const StatusCallback& error_callback) {
 227   int request_id = dispatchers_.Add(
 228       CallbackDispatcher::Create(success_callback, error_callback));
 229   ChildThreadImpl::current()->Send(
 230       new FileSystemHostMsg_ReadMetadata(request_id, path));
 231 }
 232
 233 void FileSystemDispatcher::CreateFile(
 234     const GURL& path,
 235     bool exclusive,
 236     const StatusCallback& callback) {
 237   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 238   ChildThreadImpl::current()->Send(new FileSystemHostMsg_Create(
 239       request_id, path, exclusive,
 240       false /* is_directory */, false /* recursive */));
 241 }
 242
 243 void FileSystemDispatcher::CreateDirectory(
 244     const GURL& path,
 245     bool exclusive,
 246     bool recursive,
 247     const StatusCallback& callback) {
 248   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 249   ChildThreadImpl::current()->Send(new FileSystemHostMsg_Create(
 250       request_id, path, exclusive, true /* is_directory */, recursive));
 251 }
 252
 253 void FileSystemDispatcher::Exists(
 254     const GURL& path,
 255     bool is_directory,
 256     const StatusCallback& callback) {
 257   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 258   ChildThreadImpl::current()->Send(
 259       new FileSystemHostMsg_Exists(request_id, path, is_directory));
 260 }
 261
 262 void FileSystemDispatcher::ReadDirectory(
 263     const GURL& path,
 264     const ReadDirectoryCallback& success_callback,
 265     const StatusCallback& error_callback) {
 266   int request_id = dispatchers_.Add(
 267       CallbackDispatcher::Create(success_callback, error_callback));
 268   ChildThreadImpl::current()->Send(
 269       new FileSystemHostMsg_ReadDirectory(request_id, path));
 270 }
 271
 272 void FileSystemDispatcher::Truncate(
 273     const GURL& path,
 274     int64 offset,
 275     int* request_id_out,
 276     const StatusCallback& callback) {
 277   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 278   ChildThreadImpl::current()->Send(
 279       new FileSystemHostMsg_Truncate(request_id, path, offset));
 280
 281   if (request_id_out)
 282     *request_id_out = request_id;
 283 }
 284
 285 void FileSystemDispatcher::Write(
 286     const GURL& path,
 287     const std::string& blob_id,
 288     int64 offset,
 289     int* request_id_out,
 290     const WriteCallback& success_callback,
 291     const StatusCallback& error_callback) {
 292   int request_id = dispatchers_.Add(
 293       CallbackDispatcher::Create(success_callback, error_callback));
 294   ChildThreadImpl::current()->Send(
 295       new FileSystemHostMsg_Write(request_id, path, blob_id, offset));
 296
 297   if (request_id_out)
 298     *request_id_out = request_id;
 299 }
 300
 301 void FileSystemDispatcher::Cancel(
 302     int request_id_to_cancel,
 303     const StatusCallback& callback) {
 304   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 305   ChildThreadImpl::current()->Send(new FileSystemHostMsg_CancelWrite(
 306       request_id, request_id_to_cancel));
 307 }
 308
 309 void FileSystemDispatcher::TouchFile(
 310     const GURL& path,
 311     const base::Time& last_access_time,
 312     const base::Time& last_modified_time,
 313     const StatusCallback& callback) {
 314   int request_id = dispatchers_.Add(CallbackDispatcher::Create(callback));
 315   ChildThreadImpl::current()->Send(
 316       new FileSystemHostMsg_TouchFile(
 317           request_id, path, last_access_time, last_modified_time));
 318 }
 319
 320 void FileSystemDispatcher::CreateSnapshotFile(
 321     const GURL& file_path,
 322     const CreateSnapshotFileCallback& success_callback,
 323     const StatusCallback& error_callback) {
 324   int request_id = dispatchers_.Add(
 325       CallbackDispatcher::Create(success_callback, error_callback));
 326   ChildThreadImpl::current()->Send(
 327       new FileSystemHostMsg_CreateSnapshotFile(
 328           request_id, file_path));
 329 }
 330
 331 void FileSystemDispatcher::OnDidOpenFileSystem(int request_id,
 332                                                const std::string& name,
 333                                                const GURL& root) {
 334   DCHECK(root.is_valid());
 335   CallbackDispatcher* dispatcher = dispatchers_.Lookup(request_id);
 336   DCHECK(dispatcher);
 337   dispatcher->DidOpenFileSystem(name, root);
 338   dispatchers_.Remove(request_id);
 339 }
 340
 341 void FileSystemDispatcher::OnDidResolveURL(int request_id,
 342                                            const storage::FileSystemInfo& info,
 343                                            const base::FilePath& file_path,
 344                                            bool is_directory) {
 345   DCHECK(info.root_url.is_valid());
 346   CallbackDispatcher* dispatcher = dispatchers_.Lookup(request_id);
 347   DCHECK(dispatcher);
 348   dispatcher->DidResolveURL(info, file_path, is_directory);
 349   dispatchers_.Remove(request_id);
 350 }
 351
 352 void FileSystemDispatcher::OnDidSucceed(int request_id) {
 353   CallbackDispatcher* dispatcher = dispatchers_.Lookup(request_id);
 354   DCHECK(dispatcher);
 355   dispatcher->DidSucceed();
 356   dispatchers_.Remove(request_id);
 357 }
 358
 359 void FileSystemDispatcher::OnDidReadMetadata(
 360     int request_id, const base::File::Info& file_info) {
 361   CallbackDispatcher* dispatcher = dispatchers_.Lookup(request_id);
 362   DCHECK(dispatcher);
 363   dispatcher->DidReadMetadata(file_info);
 364   dispatchers_.Remove(request_id);
 365 }
 366
 367 void FileSystemDispatcher::OnDidCreateSnapshotFile(
 368     int request_id, const base::File::Info& file_info,
 369     const base::FilePath& platform_path) {
 370   CallbackDispatcher* dispatcher = dispatchers_.Lookup(request_id);
 371   DCHECK(dispatcher);
 372   dispatcher->DidCreateSnapshotFile(file_info, platform_path, request_id);
 373   dispatchers_.Remove(request_id);
 374 }
 375
 376 void FileSystemDispatcher::OnDidReadDirectory(
 377     int request_id,
 378     const std::vector<storage::DirectoryEntry>& entries,
 379     bool has_more) {
 380   CallbackDispatcher* dispatcher = dispatchers_.Lookup(request_id);
 381   DCHECK(dispatcher);
 382   dispatcher->DidReadDirectory(entries, has_more);
 383   if (!has_more)
 384     dispatchers_.Remove(request_id);
 385 }
 386
 387 void FileSystemDispatcher::OnDidFail(
 388     int request_id, base::File::Error error_code) {
 389   CallbackDispatcher* dispatcher = dispatchers_.Lookup(request_id);
 390   DCHECK(dispatcher);
 391   dispatcher->DidFail(error_code);
 392   dispatchers_.Remove(request_id);
 393 }
 394
 395 void FileSystemDispatcher::OnDidWrite(
 396     int request_id, int64 bytes, bool complete) {
 397   CallbackDispatcher* dispatcher = dispatchers_.Lookup(request_id);
 398   DCHECK(dispatcher);
 399   dispatcher->DidWrite(bytes, complete);
 400   if (complete)
 401     dispatchers_.Remove(request_id);
 402 }
 403
 404 }  // namespace content