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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/drive/remove_stale_cache_files.h"
#include "base/logging.h"
#include "components/drive/drive.pb.h"
#include "components/drive/file_cache.h"
#include "components/drive/resource_metadata.h"
namespace drive {
namespace internal {
void RemoveStaleCacheFiles(FileCache* cache,
ResourceMetadata* resource_metadata) {
scoped_ptr<ResourceMetadata::Iterator> it = resource_metadata->GetIterator();
for (; !it->IsAtEnd(); it->Advance()) {
const ResourceEntry& entry = it->GetValue();
const FileCacheEntry& cache_state =
entry.file_specific_info().cache_state();
// Stale = not dirty but the MD5 does not match.
if (!cache_state.is_dirty() &&
cache_state.md5() != entry.file_specific_info().md5()) {
FileError error = cache->Remove(it->GetID());
LOG_IF(WARNING, error != FILE_ERROR_OK)
<< "Failed to remove a stale cache file. resource_id: "
<< it->GetID();
}
}
}
} // namespace internal
} // namespace drive
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