chrome/browser/chromeos/drive/remove_stale_cache_files.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 "chrome/browser/chromeos/drive/remove_stale_cache_files.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/bind.h"
  11 #include "base/logging.h"
  12 #include "chrome/browser/chromeos/drive/drive.pb.h"
  13 #include "chrome/browser/chromeos/drive/file_cache.h"
  14 #include "chrome/browser/chromeos/drive/resource_metadata.h"
  15
  16 namespace drive {
  17 namespace internal {
  18
  19 void RemoveStaleCacheFiles(FileCache* cache,
  20                            ResourceMetadata* resource_metadata) {
  21   std::vector<std::string> resource_ids_to_be_removed;
  22
  23   scoped_ptr<FileCache::Iterator> it = cache->GetIterator();
  24   for (; !it->IsAtEnd(); it->Advance()) {
  25     ResourceEntry entry;
  26     FileError error = resource_metadata->GetResourceEntryById(it->GetID(),
  27                                                               &entry);
  28     // Stale = the entry is not found, or not dirty but the MD5 does not match.
  29     if (error != FILE_ERROR_OK ||
  30         (!it->GetValue().is_dirty() &&
  31          it->GetValue().md5() != entry.file_specific_info().md5())) {
  32       FileError error = cache->Remove(it->GetID());
  33       LOG_IF(WARNING, error != FILE_ERROR_OK)
  34           << "Failed to remove a stale cache file. resource_id: "
  35           << it->GetID();
  36     }
  37   }
  38 }
  39
  40 }  // namespace internal
  41 }  // namespace drive