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// Copyright 2015 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.
#include "blimp/client/session/blimp_client_session.h"
#include <string>
#include <vector>
#include "base/command_line.h"
#include "base/numerics/safe_conversions.h"
#include "base/strings/string_number_conversions.h"
#include "base/threading/sequenced_task_runner_handle.h"
#include "blimp/client/app/blimp_client_switches.h"
#include "blimp/client/feature/navigation_feature.h"
#include "blimp/client/feature/render_widget_feature.h"
#include "blimp/client/feature/tab_control_feature.h"
#include "blimp/net/blimp_message_processor.h"
#include "blimp/net/blimp_message_thread_pipe.h"
#include "blimp/net/browser_connection_handler.h"
#include "blimp/net/client_connection_manager.h"
#include "blimp/net/common.h"
#include "blimp/net/null_blimp_message_processor.h"
#include "blimp/net/tcp_client_transport.h"
#include "net/base/address_list.h"
#include "net/base/ip_address.h"
#include "net/base/ip_endpoint.h"
namespace blimp {
namespace client {
// This class's functions and destruction are all invoked on the IO thread by
// the BlimpClientSession.
// TODO(haibinlu): crbug/574884
class ClientNetworkComponents {
public:
// Can be created on any thread.
ClientNetworkComponents() {}
~ClientNetworkComponents() {}
// Sets up network components.
void Initialize();
// Starts the connection to the engine using the given |assignment|.
// It is required to first call Initialize.
void ConnectWithAssignment(const Assignment& assignment);
// Invoked by BlimpEngineSession to finish feature registration on IO thread:
// using |incoming_proxy| as the incoming message processor, and connecting
// |outgoing_pipe| to the actual message sender.
void RegisterFeature(BlimpMessage::Type type,
scoped_ptr<BlimpMessageThreadPipe> outgoing_pipe,
scoped_ptr<BlimpMessageProcessor> incoming_proxy);
private:
scoped_ptr<BrowserConnectionHandler> browser_connection_handler_;
scoped_ptr<ClientConnectionManager> connection_manager_;
// Container for the feature-specific MessageProcessors.
std::vector<scoped_ptr<BlimpMessageProcessor>> incoming_proxies_;
// Containers for the MessageProcessors used to write feature-specific
// messages to the network, and the thread-pipe endpoints through which
// they are used from the UI thread.
std::vector<scoped_ptr<BlimpMessageThreadPipe>> outgoing_pipes_;
std::vector<scoped_ptr<BlimpMessageProcessor>> outgoing_message_processors_;
DISALLOW_COPY_AND_ASSIGN(ClientNetworkComponents);
};
void ClientNetworkComponents::Initialize() {
DCHECK(!connection_manager_);
connection_manager_ = make_scoped_ptr(
new ClientConnectionManager(browser_connection_handler_.get()));
}
void ClientNetworkComponents::ConnectWithAssignment(
const Assignment& assignment) {
DCHECK(connection_manager_);
connection_manager_->set_client_token(assignment.client_token);
connection_manager_->AddTransport(make_scoped_ptr(new TCPClientTransport(
net::AddressList(assignment.ip_endpoint), nullptr)));
connection_manager_->Connect();
}
void ClientNetworkComponents::RegisterFeature(
BlimpMessage::Type type,
scoped_ptr<BlimpMessageThreadPipe> outgoing_pipe,
scoped_ptr<BlimpMessageProcessor> incoming_proxy) {
if (!browser_connection_handler_) {
browser_connection_handler_ = make_scoped_ptr(new BrowserConnectionHandler);
}
// Registers |incoming_proxy| as the message processor for incoming
// messages with |type|. Sets the returned outgoing message processor as the
// actual sender of the |outgoing_pipe|.
scoped_ptr<BlimpMessageProcessor> outgoing_message_processor =
browser_connection_handler_->RegisterFeature(type, incoming_proxy.get());
outgoing_pipe->set_target_processor(outgoing_message_processor.get());
incoming_proxies_.push_back(std::move(incoming_proxy));
outgoing_pipes_.push_back(std::move(outgoing_pipe));
outgoing_message_processors_.push_back(std::move(outgoing_message_processor));
}
BlimpClientSession::BlimpClientSession(
scoped_ptr<AssignmentSource> assignment_source)
: assignment_source_(std::move(assignment_source)),
io_thread_("BlimpIOThread"),
tab_control_feature_(new TabControlFeature),
navigation_feature_(new NavigationFeature),
render_widget_feature_(new RenderWidgetFeature),
net_components_(new ClientNetworkComponents),
weak_factory_(this) {
base::Thread::Options options;
options.message_loop_type = base::MessageLoop::TYPE_IO;
io_thread_.StartWithOptions(options);
// Register features' message senders and receivers.
tab_control_feature_->set_outgoing_message_processor(
RegisterFeature(BlimpMessage::TAB_CONTROL, tab_control_feature_.get()));
navigation_feature_->set_outgoing_message_processor(
RegisterFeature(BlimpMessage::NAVIGATION, navigation_feature_.get()));
render_widget_feature_->set_outgoing_input_message_processor(
RegisterFeature(BlimpMessage::INPUT, render_widget_feature_.get()));
render_widget_feature_->set_outgoing_compositor_message_processor(
RegisterFeature(BlimpMessage::COMPOSITOR, render_widget_feature_.get()));
// We don't expect to send any RenderWidget messages, so don't save the
// outgoing BlimpMessageProcessor in the RenderWidgetFeature.
RegisterFeature(BlimpMessage::RENDER_WIDGET, render_widget_feature_.get());
// Initialize must only be posted after the RegisterFeature calls have
// completed.
io_thread_.task_runner()->PostTask(
FROM_HERE, base::Bind(&ClientNetworkComponents::Initialize,
base::Unretained(net_components_.get())));
}
BlimpClientSession::~BlimpClientSession() {
io_thread_.task_runner()->DeleteSoon(FROM_HERE, net_components_.release());
}
void BlimpClientSession::Connect() {
assignment_source_->GetAssignment(base::Bind(
&BlimpClientSession::ConnectWithAssignment, weak_factory_.GetWeakPtr()));
}
void BlimpClientSession::ConnectWithAssignment(const Assignment& assignment) {
io_thread_.task_runner()->PostTask(
FROM_HERE,
base::Bind(&ClientNetworkComponents::ConnectWithAssignment,
base::Unretained(net_components_.get()), assignment));
}
scoped_ptr<BlimpMessageProcessor> BlimpClientSession::RegisterFeature(
BlimpMessage::Type type,
BlimpMessageProcessor* incoming_processor) {
// Creates an outgoing pipe and a proxy for forwarding messages
// from features on the UI thread to network components on the IO thread.
scoped_ptr<BlimpMessageThreadPipe> outgoing_pipe(
new BlimpMessageThreadPipe(io_thread_.task_runner()));
scoped_ptr<BlimpMessageProcessor> outgoing_message_proxy =
outgoing_pipe->CreateProxy();
// Creates an incoming pipe and a proxy for receiving messages
// from network components on the IO thread.
scoped_ptr<BlimpMessageThreadPipe> incoming_pipe(
new BlimpMessageThreadPipe(base::SequencedTaskRunnerHandle::Get()));
incoming_pipe->set_target_processor(incoming_processor);
scoped_ptr<BlimpMessageProcessor> incoming_proxy =
incoming_pipe->CreateProxy();
// Finishes registration on IO thread.
io_thread_.task_runner()->PostTask(
FROM_HERE, base::Bind(&ClientNetworkComponents::RegisterFeature,
base::Unretained(net_components_.get()), type,
base::Passed(std::move(outgoing_pipe)),
base::Passed(std::move(incoming_proxy))));
incoming_pipes_.push_back(std::move(incoming_pipe));
return outgoing_message_proxy;
}
TabControlFeature* BlimpClientSession::GetTabControlFeature() const {
return tab_control_feature_.get();
}
NavigationFeature* BlimpClientSession::GetNavigationFeature() const {
return navigation_feature_.get();
}
RenderWidgetFeature* BlimpClientSession::GetRenderWidgetFeature() const {
return render_widget_feature_.get();
}
} // namespace client
} // namespace blimp
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