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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_QUOTA_QUOTA_MANAGER_HOST_H_
#define CONTENT_BROWSER_QUOTA_QUOTA_MANAGER_HOST_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "storage/browser/quota/quota_manager.h"
#include "third_party/blink/public/mojom/quota/quota_manager_host.mojom.h"
namespace blink {
class StorageKey;
}
namespace storage {
class QuotaManager;
}
namespace content {
// Implements the Quota (Storage) API for a single StorageKey.
//
// QuotaContext indirectly owns all QuotaManagerHost instances associated with a
// StoragePartition. A new instance is created for every incoming mojo
// connection from a frame or worker. Instances are destroyed when their
// corresponding mojo connections are closed, or when QuotaContext is destroyed.
//
// This class is thread-hostile and must only be used on the browser's IO
// thread. This requirement is a consequence of interacting with
// storage::QuotaManager, which must be used from the IO thread. This situation
// is likely to change when QuotaManager moves to the Storage Service.
class QuotaManagerHost : public blink::mojom::QuotaManagerHost {
public:
// The owner must guarantee that `quota_manager` outlives this instance.
QuotaManagerHost(const blink::StorageKey& storage_key,
storage::QuotaManager* quota_manager);
QuotaManagerHost(const QuotaManagerHost&) = delete;
QuotaManagerHost& operator=(const QuotaManagerHost&) = delete;
~QuotaManagerHost() override;
// blink::mojom::QuotaManagerHost:
void QueryStorageUsageAndQuota(
QueryStorageUsageAndQuotaCallback callback) override;
private:
void DidQueryStorageUsageAndQuota(QueryStorageUsageAndQuotaCallback callback,
blink::mojom::QuotaStatusCode status,
int64_t usage,
int64_t quota,
blink::mojom::UsageBreakdownPtr);
// The storage key of the frame or worker connected to this host.
const blink::StorageKey storage_key_;
// Raw pointer use is safe because the QuotaContext that indirectly owns this
// QuotaManagerHost owner holds a reference to the QuotaManager. Therefore
// the QuotaManager is guaranteed to outlive this QuotaManagerHost.
const raw_ptr<storage::QuotaManager> quota_manager_;
base::WeakPtrFactory<QuotaManagerHost> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_QUOTA_QUOTA_MANAGER_HOST_H_
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