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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "storage/browser/file_system/sandbox_quota_observer.h"
#include <stdint.h>
#include "base/files/file_error_or.h"
#include "base/functional/bind.h"
#include "base/memory/scoped_refptr.h"
#include "base/task/sequenced_task_runner.h"
#include "storage/browser/file_system/file_system_usage_cache.h"
#include "storage/browser/file_system/sandbox_file_system_backend_delegate.h"
#include "storage/browser/quota/quota_client_type.h"
#include "storage/browser/quota/quota_manager_proxy.h"
#include "storage/common/file_system/file_system_util.h"
#include "third_party/blink/public/common/storage_key/storage_key.h"
namespace storage {
SandboxQuotaObserver::SandboxQuotaObserver(
scoped_refptr<QuotaManagerProxy> quota_manager_proxy,
scoped_refptr<base::SequencedTaskRunner> update_notify_runner,
ObfuscatedFileUtil* sandbox_file_util,
FileSystemUsageCache* file_system_usage_cache)
: quota_manager_proxy_(std::move(quota_manager_proxy)),
update_notify_runner_(std::move(update_notify_runner)),
sandbox_file_util_(sandbox_file_util),
file_system_usage_cache_(file_system_usage_cache) {}
SandboxQuotaObserver::~SandboxQuotaObserver() = default;
void SandboxQuotaObserver::OnStartUpdate(const FileSystemURL& url) {
DCHECK(update_notify_runner_->RunsTasksInCurrentSequence());
base::FileErrorOr<base::FilePath> usage_file_path = GetUsageCachePath(url);
if (!usage_file_path.has_value() || usage_file_path->empty())
return;
file_system_usage_cache_->IncrementDirty(usage_file_path.value());
}
void SandboxQuotaObserver::OnUpdate(const FileSystemURL& url, int64_t delta) {
DCHECK(update_notify_runner_->RunsTasksInCurrentSequence());
if (quota_manager_proxy_.get()) {
quota_manager_proxy_->NotifyBucketModified(
QuotaClientType::kFileSystem, url.GetBucket(), delta, base::Time::Now(),
base::SequencedTaskRunner::GetCurrentDefault(), base::DoNothing());
}
base::FileErrorOr<base::FilePath> usage_file_path = GetUsageCachePath(url);
if (!usage_file_path.has_value() || usage_file_path->empty())
return;
pending_update_notification_[usage_file_path.value()] += delta;
if (!delayed_cache_update_helper_.IsRunning()) {
delayed_cache_update_helper_.Start(
FROM_HERE,
base::TimeDelta(), // No delay.
base::BindOnce(&SandboxQuotaObserver::ApplyPendingUsageUpdate,
base::Unretained(this)));
}
}
void SandboxQuotaObserver::OnEndUpdate(const FileSystemURL& url) {
DCHECK(update_notify_runner_->RunsTasksInCurrentSequence());
base::FileErrorOr<base::FilePath> usage_file_path = GetUsageCachePath(url);
if (!usage_file_path.has_value() || usage_file_path->empty())
return;
auto found = pending_update_notification_.find(usage_file_path.value());
if (found != pending_update_notification_.end()) {
UpdateUsageCacheFile(found->first, found->second);
pending_update_notification_.erase(found);
}
file_system_usage_cache_->DecrementDirty(usage_file_path.value());
}
void SandboxQuotaObserver::OnAccess(const FileSystemURL& url) {
if (quota_manager_proxy_.get()) {
quota_manager_proxy_->NotifyBucketAccessed(url.GetBucket(),
base::Time::Now());
}
}
void SandboxQuotaObserver::SetUsageCacheEnabled(const url::Origin& origin,
FileSystemType type,
bool enabled) {
if (quota_manager_proxy_.get()) {
quota_manager_proxy_->SetUsageCacheEnabled(
QuotaClientType::kFileSystem,
blink::StorageKey::CreateFirstParty(origin), enabled);
}
}
base::FileErrorOr<base::FilePath> SandboxQuotaObserver::GetUsageCachePath(
const FileSystemURL& url) {
DCHECK(sandbox_file_util_);
base::FileErrorOr<base::FilePath> path;
if (url.bucket().has_value()) {
path = SandboxFileSystemBackendDelegate::GetUsageCachePathForBucketAndType(
sandbox_file_util_, url.bucket().value(), url.type());
} else {
path =
SandboxFileSystemBackendDelegate::GetUsageCachePathForStorageKeyAndType(
sandbox_file_util_, url.storage_key(), url.type());
}
if (!path.has_value()) {
LOG(WARNING) << "Could not get usage cache path for: " << url.DebugString();
}
return path;
}
void SandboxQuotaObserver::ApplyPendingUsageUpdate() {
delayed_cache_update_helper_.Stop();
for (const auto& path_delta_pair : pending_update_notification_)
UpdateUsageCacheFile(path_delta_pair.first, path_delta_pair.second);
pending_update_notification_.clear();
}
void SandboxQuotaObserver::UpdateUsageCacheFile(
const base::FilePath& usage_file_path,
int64_t delta) {
DCHECK(!usage_file_path.empty());
if (!usage_file_path.empty() && delta != 0)
file_system_usage_cache_->AtomicUpdateUsageByDelta(usage_file_path, delta);
}
} // namespace storage
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