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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 "webkit/fileapi/sandbox_quota_observer.h"
#include "base/sequenced_task_runner.h"
#include "webkit/fileapi/file_system_url.h"
#include "webkit/fileapi/file_system_usage_cache.h"
#include "webkit/fileapi/file_system_util.h"
#include "webkit/fileapi/sandbox_mount_point_provider.h"
#include "webkit/quota/quota_client.h"
#include "webkit/quota/quota_manager.h"
namespace fileapi {
SandboxQuotaObserver::SandboxQuotaObserver(
quota::QuotaManagerProxy* quota_manager_proxy,
base::SequencedTaskRunner* update_notify_runner,
ObfuscatedFileUtil* sandbox_file_util)
: quota_manager_proxy_(quota_manager_proxy),
update_notify_runner_(update_notify_runner),
sandbox_file_util_(sandbox_file_util),
running_delayed_cache_update_(false),
weak_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {}
SandboxQuotaObserver::~SandboxQuotaObserver() {}
void SandboxQuotaObserver::OnStartUpdate(const FileSystemURL& url) {
DCHECK(SandboxMountPointProvider::CanHandleType(url.type()));
DCHECK(update_notify_runner_->RunsTasksOnCurrentThread());
base::FilePath usage_file_path = GetUsageCachePath(url);
if (usage_file_path.empty())
return;
FileSystemUsageCache::IncrementDirty(usage_file_path);
}
void SandboxQuotaObserver::OnUpdate(const FileSystemURL& url,
int64 delta) {
DCHECK(SandboxMountPointProvider::CanHandleType(url.type()));
DCHECK(update_notify_runner_->RunsTasksOnCurrentThread());
if (quota_manager_proxy_) {
quota_manager_proxy_->NotifyStorageModified(
quota::QuotaClient::kFileSystem,
url.origin(),
FileSystemTypeToQuotaStorageType(url.type()),
delta);
}
base::FilePath usage_file_path = GetUsageCachePath(url);
if (usage_file_path.empty())
return;
pending_update_notification_[usage_file_path] += delta;
if (!running_delayed_cache_update_) {
update_notify_runner_->PostTask(FROM_HERE, base::Bind(
&SandboxQuotaObserver::ApplyPendingUsageUpdate,
weak_factory_.GetWeakPtr()));
running_delayed_cache_update_ = true;
}
}
void SandboxQuotaObserver::OnEndUpdate(const FileSystemURL& url) {
DCHECK(SandboxMountPointProvider::CanHandleType(url.type()));
DCHECK(update_notify_runner_->RunsTasksOnCurrentThread());
base::FilePath usage_file_path = GetUsageCachePath(url);
if (usage_file_path.empty())
return;
PendingUpdateNotificationMap::iterator found =
pending_update_notification_.find(usage_file_path);
if (found != pending_update_notification_.end()) {
UpdateUsageCacheFile(found->first, found->second);
pending_update_notification_.erase(found);
}
FileSystemUsageCache::DecrementDirty(usage_file_path);
}
void SandboxQuotaObserver::OnAccess(const FileSystemURL& url) {
DCHECK(SandboxMountPointProvider::CanHandleType(url.type()));
if (quota_manager_proxy_) {
quota_manager_proxy_->NotifyStorageAccessed(
quota::QuotaClient::kFileSystem,
url.origin(),
FileSystemTypeToQuotaStorageType(url.type()));
}
}
base::FilePath SandboxQuotaObserver::GetUsageCachePath(const FileSystemURL& url) {
DCHECK(sandbox_file_util_);
base::PlatformFileError error = base::PLATFORM_FILE_OK;
base::FilePath path = SandboxMountPointProvider::GetUsageCachePathForOriginAndType(
sandbox_file_util_, url.origin(), url.type(), &error);
if (error != base::PLATFORM_FILE_OK) {
LOG(WARNING) << "Could not get usage cache path for: "
<< url.DebugString();
return base::FilePath();
}
return path;
}
void SandboxQuotaObserver::ApplyPendingUsageUpdate() {
for (PendingUpdateNotificationMap::iterator itr =
pending_update_notification_.begin();
itr != pending_update_notification_.end();
++itr) {
UpdateUsageCacheFile(itr->first, itr->second);
}
pending_update_notification_.clear();
running_delayed_cache_update_ = false;
}
void SandboxQuotaObserver::UpdateUsageCacheFile(
const base::FilePath& usage_file_path,
int64 delta) {
DCHECK(!usage_file_path.empty());
if (!usage_file_path.empty() && delta != 0)
FileSystemUsageCache::AtomicUpdateUsageByDelta(usage_file_path, delta);
}
} // namespace fileapi
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