blob: a6de8ba68bbb9eaed494e031215f3c391e2e01f3 [file] [log] [blame]
// Copyright 2016 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.
#ifndef BLIMP_NET_BLOB_CHANNEL_BLOB_CHANNEL_SENDER_IMPL_H_
#define BLIMP_NET_BLOB_CHANNEL_BLOB_CHANNEL_SENDER_IMPL_H_
#include <memory>
#include <set>
#include <string>
#include "base/macros.h"
#include "base/threading/thread_checker.h"
#include "blimp/common/blob_cache/blob_cache.h"
#include "blimp/net/blimp_net_export.h"
#include "blimp/net/blob_channel/blob_channel_sender.h"
namespace blimp {
// Sends blobs to a remote receiver.
// The transport-specific details are provided by the caller using the Delegate
// subclass.
class BLIMP_NET_EXPORT BlobChannelSenderImpl : public BlobChannelSender {
public:
// Delegate interface for transport-specific implementations of blob transfer
// commands.
class Delegate {
public:
virtual ~Delegate() {}
// Send blob |id| with payload |data| to the receiver.
virtual void DeliverBlob(const BlobId& id, BlobDataPtr data) = 0;
};
BlobChannelSenderImpl(std::unique_ptr<BlobCache> cache,
std::unique_ptr<Delegate> delegate);
~BlobChannelSenderImpl() override;
// BlobChannelSender implementation.
void PutBlob(const BlobId& id, BlobDataPtr data) override;
void DeliverBlob(const BlobId& id) override;
private:
std::unique_ptr<BlobCache> cache_;
std::unique_ptr<Delegate> delegate_;
// Used to track the item IDs in the receiver's cache. This may differ from
// the set of IDs in |cache_|, for instance if an ID hasn't yet been
// delivered, or has been evicted at the receiver.
std::set<BlobId> receiver_cache_contents_;
DISALLOW_COPY_AND_ASSIGN(BlobChannelSenderImpl);
};
} // namespace blimp
#endif // BLIMP_NET_BLOB_CHANNEL_BLOB_CHANNEL_SENDER_IMPL_H_