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content / browser / cache_storage / cache_storage_blob_to_disk_cache.h [blame]
// Copyright 2015 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_CACHE_STORAGE_CACHE_STORAGE_BLOB_TO_DISK_CACHE_H_
#define CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_BLOB_TO_DISK_CACHE_H_
#include "base/functional/callback.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "content/browser/cache_storage/scoped_writable_entry.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/network/public/cpp/net_adapters.h"
#include "third_party/blink/public/common/storage_key/storage_key.h"
#include "third_party/blink/public/mojom/blob/blob.mojom.h"
namespace storage {
class QuotaManagerProxy;
}
namespace content {
// Streams data from a blob and writes it to a given disk_cache::Entry.
class CONTENT_EXPORT CacheStorageBlobToDiskCache
: public blink::mojom::BlobReaderClient {
public:
using EntryAndBoolCallback =
base::OnceCallback<void(ScopedWritableEntry, bool)>;
// The buffer size used for reading from blobs and writing to disk cache.
static const int kBufferSize;
CacheStorageBlobToDiskCache(
scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy,
const blink::StorageKey& storage_key);
CacheStorageBlobToDiskCache(const CacheStorageBlobToDiskCache&) = delete;
CacheStorageBlobToDiskCache& operator=(const CacheStorageBlobToDiskCache&) =
delete;
~CacheStorageBlobToDiskCache() override;
// Writes the body of |blob_remote| to |entry| with index
// |disk_cache_body_index|. |entry| is passed to the callback once complete.
// Only call this once per instantiation of CacheStorageBlobToDiskCache.
void StreamBlobToCache(ScopedWritableEntry entry,
int disk_cache_body_index,
mojo::PendingRemote<blink::mojom::Blob> blob_remote,
uint64_t blob_size,
EntryAndBoolCallback callback);
// BlobReaderClient:
void OnCalculatedSize(uint64_t total_size,
uint64_t expected_content_size) override {}
void OnComplete(int32_t status, uint64_t data_length) override;
protected:
// Virtual for testing.
virtual void ReadFromBlob();
void DidWriteDataToEntry(int expected_bytes, int rv);
const blink::StorageKey& storage_key() const { return storage_key_; }
private:
void RunCallback(bool success);
void OnDataPipeReadable(MojoResult result);
int cache_entry_offset_ = 0;
ScopedWritableEntry entry_;
int disk_cache_body_index_ = 0;
EntryAndBoolCallback callback_;
mojo::ScopedDataPipeConsumerHandle consumer_handle_;
scoped_refptr<network::MojoToNetPendingBuffer> pending_read_;
mojo::SimpleWatcher handle_watcher_;
mojo::Receiver<BlobReaderClient> client_receiver_{this};
bool received_on_complete_ = false;
uint64_t expected_total_size_ = 0;
bool data_pipe_closed_ = false;
const scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy_;
const blink::StorageKey storage_key_;
base::WeakPtrFactory<CacheStorageBlobToDiskCache> weak_ptr_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_BLOB_TO_DISK_CACHE_H_