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// Copyright 2019 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 CHROME_SERVICES_CUPS_PROXY_SOCKET_MANAGER_H_
#define CHROME_SERVICES_CUPS_PROXY_SOCKET_MANAGER_H_
#include <memory>
#include <vector>
#include "base/callback.h"
#include "base/optional.h"
#include "chrome/services/cups_proxy/cups_proxy_service_delegate.h"
namespace net {
class UnixDomainClientSocket;
} // namespace net
namespace cups_proxy {
using SocketManagerCallback =
base::OnceCallback<void(std::unique_ptr<std::vector<uint8_t>>)>;
// This manager proxies IPP requests to the CUPS daemon and asynchronously
// responds with the IPP response. This class must be created and accessed
// from a sequenced context.
class SocketManager {
public:
// Factory function.
static std::unique_ptr<SocketManager> Create(
CupsProxyServiceDelegate* const delegate);
// Factory function that allows injected dependencies, for testing.
static std::unique_ptr<SocketManager> CreateForTesting(
std::unique_ptr<net::UnixDomainClientSocket> socket,
CupsProxyServiceDelegate* const delegate);
virtual ~SocketManager() = default;
// Attempts to send |request| to the CUPS Daemon, and return its response via
// |cb|. |cb| will run on the caller's sequence. Note: Can only handle 1
// inflight request at a time; attempts to proxy more will DCHECK.
virtual void ProxyToCups(std::vector<uint8_t> request,
SocketManagerCallback cb) = 0;
};
} // namespace cups_proxy
#endif // CHROME_SERVICES_CUPS_PROXY_SOCKET_MANAGER_H_