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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/browser/fileapi/sandbox_quota_observer.h"
#include "base/sequenced_task_runner.h"
#include "webkit/browser/fileapi/file_system_url.h"
#include "webkit/browser/fileapi/file_system_usage_cache.h"
#include "webkit/browser/fileapi/sandbox_context.h"
#include "webkit/browser/fileapi/timed_task_helper.h"
#include "webkit/browser/quota/quota_client.h"
#include "webkit/browser/quota/quota_manager.h"
#include "webkit/common/fileapi/file_system_util.h"
namespace fileapi {
SandboxQuotaObserver::SandboxQuotaObserver(
quota::QuotaManagerProxy* quota_manager_proxy,
base::SequencedTaskRunner* update_notify_runner,
ObfuscatedFileUtil* sandbox_file_util,
FileSystemUsageCache* file_system_usage_cache)
: quota_manager_proxy_(quota_manager_proxy),
update_notify_runner_(update_notify_runner),
sandbox_file_util_(sandbox_file_util),
file_system_usage_cache_(file_system_usage_cache) {}
SandboxQuotaObserver::~SandboxQuotaObserver() {}
void SandboxQuotaObserver::OnStartUpdate(const FileSystemURL& url) {
DCHECK(update_notify_runner_->RunsTasksOnCurrentThread());
base::FilePath usage_file_path = GetUsageCachePath(url);
if (usage_file_path.empty())
return;
file_system_usage_cache_->IncrementDirty(usage_file_path);
}
void SandboxQuotaObserver::OnUpdate(const FileSystemURL& url,
int64 delta) {
DCHECK(update_notify_runner_->RunsTasksOnCurrentThread());
if (quota_manager_proxy_.get()) {
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 (!delayed_cache_update_helper_) {
delayed_cache_update_helper_.reset(
new TimedTaskHelper(update_notify_runner_.get()));
delayed_cache_update_helper_->Start(
FROM_HERE,
base::TimeDelta(), // No delay.
base::Bind(&SandboxQuotaObserver::ApplyPendingUsageUpdate,
base::Unretained(this)));
}
}
void SandboxQuotaObserver::OnEndUpdate(const FileSystemURL& url) {
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);
}
file_system_usage_cache_->DecrementDirty(usage_file_path);
}
void SandboxQuotaObserver::OnAccess(const FileSystemURL& url) {
if (quota_manager_proxy_.get()) {
quota_manager_proxy_->NotifyStorageAccessed(
quota::QuotaClient::kFileSystem,
url.origin(),
FileSystemTypeToQuotaStorageType(url.type()));
}
}
void SandboxQuotaObserver::SetUsageCacheEnabled(
const GURL& origin,
FileSystemType type,
bool enabled) {
if (quota_manager_proxy_.get()) {
quota_manager_proxy_->SetUsageCacheEnabled(
quota::QuotaClient::kFileSystem,
origin,
FileSystemTypeToQuotaStorageType(type),
enabled);
}
}
base::FilePath SandboxQuotaObserver::GetUsageCachePath(
const FileSystemURL& url) {
DCHECK(sandbox_file_util_);
base::PlatformFileError error = base::PLATFORM_FILE_OK;
base::FilePath path =
SandboxContext::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() {
delayed_cache_update_helper_.reset();
for (PendingUpdateNotificationMap::iterator itr =
pending_update_notification_.begin();
itr != pending_update_notification_.end();
++itr) {
UpdateUsageCacheFile(itr->first, itr->second);
}
pending_update_notification_.clear();
}
void SandboxQuotaObserver::UpdateUsageCacheFile(
const base::FilePath& usage_file_path,
int64 delta) {
DCHECK(!usage_file_path.empty());
if (!usage_file_path.empty() && delta != 0)
file_system_usage_cache_->AtomicUpdateUsageByDelta(usage_file_path, delta);
}
} // namespace fileapi
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