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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include <utility>
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/files/file_descriptor_watcher_posix.h"
#include "base/functional/bind.h"
#include "base/message_loop/message_pump_for_io.h"
#include "base/message_loop/message_pump_type.h"
#include "base/run_loop.h"
#include "base/task/single_thread_task_executor.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/threading/sequence_bound.h"
#include "base/threading/thread.h"
#include "chromecast/base/chromecast_switches.h"
#include "chromecast/external_mojo/external_service_support/external_connector.h"
#include "chromecast/external_mojo/external_service_support/process_setup.h"
#include "chromecast/external_mojo/external_service_support/service_process.h"
#include "chromecast/external_mojo/external_service_support/tracing_client.h"
#include "chromecast/external_mojo/public/cpp/common.h"
#include "chromecast/external_mojo/public/cpp/external_mojo_broker.h"
#include "mojo/core/embedder/embedder.h"
#include "mojo/core/embedder/scoped_ipc_support.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
// Simple process entrypoint for standalone Mojo services.
struct GlobalState {
std::unique_ptr<chromecast::external_service_support::ServiceProcess>
service_process;
std::unique_ptr<chromecast::external_service_support::ExternalConnector>
connector;
std::unique_ptr<chromecast::external_service_support::TracingClient>
tracing_client;
};
void OnConnected(
GlobalState* state,
std::unique_ptr<chromecast::external_service_support::ExternalConnector>
connector) {
state->connector = std::move(connector);
state->tracing_client =
chromecast::external_service_support::TracingClient::Create(
state->connector.get());
state->service_process =
chromecast::external_service_support::ServiceProcess::Create(
state->connector.get());
}
int main(int argc, char** argv) {
base::AtExitManager exit_manager;
chromecast::external_service_support::CommonProcessInitialization(argc, argv);
base::SingleThreadTaskExecutor io_task_executor(base::MessagePumpType::IO);
base::FileDescriptorWatcher file_descriptor_watcher(io_task_executor.task_runner());
base::RunLoop run_loop;
mojo::core::Init();
mojo::core::ScopedIPCSupport ipc_support(
io_task_executor.task_runner(),
mojo::core::ScopedIPCSupport::ShutdownPolicy::CLEAN);
base::ThreadPoolInstance::CreateAndStartWithDefaultParams(
"StandaloneService");
GlobalState state;
// State for in-process Mojo broker.
auto broker_thread = std::make_unique<base::Thread>("external_mojo");
base::SequenceBound<chromecast::external_mojo::ExternalMojoBroker> broker;
if (chromecast::GetSwitchValueBoolean(switches::kInProcessBroker, false)) {
// Set up the external Mojo Broker.
broker_thread->StartWithOptions(
base::Thread::Options(base::MessagePumpType::IO, 0));
broker = base::SequenceBound<chromecast::external_mojo::ExternalMojoBroker>(
broker_thread->task_runner(),
chromecast::external_mojo::GetBrokerPath());
mojo::PendingRemote<chromecast::external_mojo::mojom::ExternalConnector>
connector_remote;
broker
.AsyncCall(
&chromecast::external_mojo::ExternalMojoBroker::BindConnector)
.WithArgs(connector_remote.InitWithNewPipeAndPassReceiver());
OnConnected(&state,
chromecast::external_service_support::ExternalConnector::Create(
std::move(connector_remote)));
} else {
// Connect to existing Mojo broker.
chromecast::external_service_support::ExternalConnector::Connect(
chromecast::external_mojo::GetBrokerPath(),
base::BindOnce(&OnConnected, &state));
}
run_loop.Run();
base::ThreadPoolInstance::Get()->Shutdown();
return 0;
}
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