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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_NET_LOG_NET_LOG_PROXY_SOURCE_H_
#define COMPONENTS_NET_LOG_NET_LOG_PROXY_SOURCE_H_
#include "base/memory/weak_ptr.h"
#include "base/values.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "net/log/net_log.h"
#include "services/network/public/mojom/net_log.mojom.h"
namespace base {
class SequencedTaskRunner;
}
namespace net_log {
// Implementation of NetLogProxySource mojo interface which observes local
// NetLog events and proxies them over mojo to a remote NetLogProxySink.
// Observing and proxying is only active when notified through
// UpdateCaptureModes() that capturing is active in the remote process.
class NetLogProxySource : public net::NetLog::ThreadSafeObserver,
public network::mojom::NetLogProxySource {
public:
// When notified through |proxy_source_receiver| that capturing is active,
// registers a local NetLog observer and sends all NetLog events to
// |proxy_sink_remote|.
// The caller is expected to create a new NetLogProxySource if the remote
// process is restarted.
NetLogProxySource(
mojo::PendingReceiver<network::mojom::NetLogProxySource>
proxy_source_receiver,
mojo::Remote<network::mojom::NetLogProxySink> proxy_sink_remote);
~NetLogProxySource() override;
NetLogProxySource(const NetLogProxySource&) = delete;
NetLogProxySource& operator=(const NetLogProxySource&) = delete;
// Remove NetLog observer and close mojo pipes.
void ShutDown();
// NetLog::ThreadSafeObserver:
void OnAddEntry(const net::NetLogEntry& entry) override;
// mojom::NetLogProxySource:
void UpdateCaptureModes(net::NetLogCaptureModeSet modes) override;
private:
// Proxy entry to the remote. Must only be called on |task_runner_|.
void SendNetLogEntry(net::NetLogEventType type,
const net::NetLogSource& net_log_source,
net::NetLogEventPhase phase,
base::TimeTicks time,
base::Value::Dict params);
mojo::Receiver<network::mojom::NetLogProxySource> proxy_source_receiver_;
mojo::Remote<network::mojom::NetLogProxySink> proxy_sink_remote_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
// A WeakPtr to |this|, which is used when posting tasks from the
// NetLog::ThreadSafeObserver to |task_runner_|. This single WeakPtr instance
// is used for all tasks as the ThreadSafeObserver may call on any thread, so
// the weak_factory_ cannot be accessed safely from those threads.
base::WeakPtr<NetLogProxySource> weak_this_;
base::WeakPtrFactory<NetLogProxySource> weak_factory_{this};
};
} // namespace net_log
#endif // COMPONENTS_NET_LOG_NET_LOG_PROXY_SOURCE_H_
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