chromeos/ash/components/mojo_service_manager/connection_helper.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chromeos/ash/components/mojo_service_manager/connection_helper.h"

#include <memory>

#include "base/command_line.h"
#include "chromeos/ash/components/mojo_service_manager/connection.h"
#include "chromeos/features.h"
#include "content/public/common/content_switches.h"

#if !BUILDFLAG(USE_REAL_CHROMEOS_SERVICES)
#include "base/system/sys_info.h"
#include "chromeos/ash/components/mojo_service_manager/fake_mojo_service_manager.h"  // nogncheck
#include "chromeos/ash/services/cros_healthd/public/cpp/fake_cros_healthd.h"  // nogncheck
#endif

namespace {

namespace service_manager = ::ash::mojo_service_manager;

base::ScopedClosureRunner CreateRealConnectionAndPassCloser() {
  CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
      ::switches::kDisableMojoBroker))
      << "Mojo broker must be disabled to use the ChromeOS mojo service "
         "manager.";
  CHECK(service_manager::BootstrapServiceManagerConnection())
      << "Cannot connect to ChromeOS mojo service manager after retries. "
         "This result in the ash don't have a mojo broker and will not be "
         "able to bootstrap any mojo connection to other processes.";
  return base::ScopedClosureRunner{
      base::BindOnce(&service_manager::ResetServiceManagerConnection)};
}

#if !BUILDFLAG(USE_REAL_CHROMEOS_SERVICES)

void ResetFakeConnection(
    std::unique_ptr<service_manager::FakeMojoServiceManager>
        fake_service_manager) {
  ::ash::cros_healthd::FakeCrosHealthd::ShutdownInBrowserTest();

  fake_service_manager.reset();
}

base::ScopedClosureRunner CreateFakeConnectionAndPassCloser() {
  CHECK(!base::CommandLine::ForCurrentProcess()->HasSwitch(
      ::switches::kDisableMojoBroker))
      << "Mojo broker must be enabled in browser tests.";
  auto fake_service_manager =
      std::make_unique<service_manager::FakeMojoServiceManager>();

  // Initialize fake services.
  ::ash::cros_healthd::FakeCrosHealthd::InitializeInBrowserTest();

  return base::ScopedClosureRunner{
      base::BindOnce(&ResetFakeConnection, std::move(fake_service_manager))};
}
#endif

}  // namespace

namespace ash {
namespace mojo_service_manager {

base::ScopedClosureRunner CreateConnectionAndPassCloser() {
#if BUILDFLAG(USE_REAL_CHROMEOS_SERVICES)
  return CreateRealConnectionAndPassCloser();
#else
  // TODO(crbug.com/41452889): Always use fakes after adding
  // use_real_chromeos_services=true to where needed.
  if (base::SysInfo::IsRunningOnChromeOS()) {
    return CreateRealConnectionAndPassCloser();
  } else {
    return CreateFakeConnectionAndPassCloser();
  }
#endif
}

}  // namespace mojo_service_manager
}  // namespace ash