Use a static catalog manifest for the standalone Mash runner

mash/runner/main.cc

+// Copyright 2016 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 <memory>
+#include <string>
+#include <utility>
+
+#include "base/at_exit.h"
+#include "base/base_paths.h"
+#include "base/bind.h"
+#include "base/debug/debugger.h"
+#include "base/debug/stack_trace.h"
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#include "base/i18n/icu_util.h"
+#include "base/json/json_reader.h"
+#include "base/memory/ptr_util.h"
+#include "base/message_loop/message_loop.h"
+#include "base/path_service.h"
+#include "base/process/launch.h"
+#include "base/run_loop.h"
+#include "base/threading/platform_thread.h"
+#include "build/build_config.h"
+#include "services/service_manager/runner/init.h"
+#include "services/service_manager/standalone/context.h"
+#include "services/service_manager/switches.h"
+
+namespace {
+
+const base::FilePath::CharType kMashCatalogFilename[] =
+    FILE_PATH_LITERAL("mash_catalog.json");
+
+}  // namespace
+
+int main(int argc, char** argv) {
+  base::CommandLine::Init(argc, argv);
+
+  base::AtExitManager at_exit;
+  service_manager::InitializeLogging();
+  service_manager::WaitForDebuggerIfNecessary();
+
+#if !defined(OFFICIAL_BUILD) && defined(OS_WIN)
+  base::RouteStdioToConsole(false);
+#endif
+
+#if !defined(OFFICIAL_BUILD)
+  base::debug::EnableInProcessStackDumping();
+#endif
+  base::PlatformThread::SetName("service_manager");
+
+  std::string catalog_contents;
+  base::FilePath exe_path;
+  base::PathService::Get(base::DIR_EXE, &exe_path);
+  base::FilePath catalog_path = exe_path.Append(kMashCatalogFilename);
+  DCHECK(base::ReadFileToString(catalog_path, &catalog_contents));
+  std::unique_ptr<base::Value> manifest_value =
+      base::JSONReader::Read(catalog_contents);
+  DCHECK(manifest_value);
+
+  auto params = base::MakeUnique<service_manager::Context::InitParams>();
+  params->static_catalog = std::move(manifest_value);
+
+#if defined(OS_WIN) && defined(COMPONENT_BUILD)
+  // In Windows component builds, ensure that loaded service binaries always
+  // search this exe's dir for DLLs.
+  SetDllDirectory(exe_path.value().c_str());
+#endif
+
+  // We want the Context to outlive the MessageLoop so that pipes are all
+  // gracefully closed / error-out before we try to shut the Context down.
+  service_manager::Context service_manager_context;
+  {
+    base::MessageLoop message_loop;
+    base::i18n::InitializeICU();
+    service_manager_context.Init(std::move(params));
+
+    message_loop.task_runner()->PostTask(
+        FROM_HERE,
+        base::Bind(&service_manager::Context::RunCommandLineApplication,
+                   base::Unretained(&service_manager_context)));
+
+    base::RunLoop().Run();
+
+    // Must be called before |message_loop| is destroyed.
+    service_manager_context.Shutdown();
+  }
+
+  return 0;
+}