AU: check after 2 min, also every 30 min.

src/platform/update_engine/main.cc

 // Copyright (c) 2010 The Chromium OS 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 <string>
 #include <tr1/memory>
 #include <vector>
 #include <gflags/gflags.h>
 #include <glib.h>
 #include "base/command_line.h"
 #include "chromeos/obsolete_logging.h"
 #include "update_engine/dbus_constants.h"
 #include "update_engine/dbus_service.h"
 #include "update_engine/update_attempter.h"
 
 extern "C" {
 #include "update_engine/update_engine.dbusserver.h"
 }
 
 DEFINE_bool(logtostderr, false,
             "Write logs to stderr instead of to a file in log_dir.");
 
 using std::string;
 using std::tr1::shared_ptr;
 using std::vector;
 
 namespace chromeos_update_engine {
 
+namespace {
+
+struct PeriodicallyUpdateArgs {
+  UpdateAttempter* update_attempter;
+  gboolean should_repeat;
+};
+
+gboolean PeriodicallyUpdate(void* arg) {
+  PeriodicallyUpdateArgs* args = reinterpret_cast<PeriodicallyUpdateArgs*>(arg);
+  args->update_attempter->Update(false);
+  return args->should_repeat;
+}
+
 void SetupDbusService(UpdateEngineService* service) {
   DBusGConnection *bus;
   DBusGProxy *proxy;
   GError *error = NULL;
 
   bus = dbus_g_bus_get(DBUS_BUS_SYSTEM, &error);
   if (!bus) {
     LOG(FATAL) << "Failed to get bus";
   }
   proxy = dbus_g_proxy_new_for_name(bus,
@@ skipping 14 matching lines @@
     g_error_free(error);
     LOG(FATAL) << "Got result code " << request_name_ret
                << " from requesting name, but expected "
                << DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER;
   }
   dbus_g_connection_register_g_object(bus,
                                       "/org/chromium/UpdateEngine",
                                       G_OBJECT(service));
 }
 
+}  // namespace {}
+
 }  // namespace chromeos_update_engine
 
 #include "update_engine/subprocess.h"
 
 int main(int argc, char** argv) {
   ::g_type_init();
   g_thread_init(NULL);
   dbus_g_thread_init();
   chromeos_update_engine::Subprocess::Init();
   google::ParseCommandLineFlags(&argc, &argv, true);
   CommandLine::Init(argc, argv);
-  logging::InitLogging("logfile.txt",
+  logging::InitLogging("/var/log/update_engine.log",
                        (FLAGS_logtostderr ?
                         logging::LOG_ONLY_TO_SYSTEM_DEBUG_LOG :
                         logging::LOG_ONLY_TO_FILE),
                        logging::DONT_LOCK_LOG_FILE,
                        logging::APPEND_TO_OLD_LOG_FILE);
   LOG(INFO) << "Chrome OS Update Engine starting";
   
   // Create the single GMainLoop
   GMainLoop* loop = g_main_loop_new(g_main_context_default(), FALSE);
 
   // Create the update attempter:
   chromeos_update_engine::UpdateAttempter update_attempter;
 
   // Create the dbus service object:
   dbus_g_object_type_install_info(UPDATE_ENGINE_TYPE_SERVICE,
                                   &dbus_glib_update_engine_service_object_info);
   UpdateEngineService* service =
       UPDATE_ENGINE_SERVICE(g_object_new(UPDATE_ENGINE_TYPE_SERVICE, NULL));
   service->update_attempter_ = &update_attempter;
   update_attempter.set_dbus_service(service);
   chromeos_update_engine::SetupDbusService(service);
 
+  // Kick off periodic updating. First, update after 2 minutes. Also, update
+  // every 30 minutes.
+  chromeos_update_engine::PeriodicallyUpdateArgs two_min_args =
+      {&update_attempter, FALSE};
+  g_timeout_add(2 * 60 * 1000,
+                &chromeos_update_engine::PeriodicallyUpdate,
+                &two_min_args);
+
+  chromeos_update_engine::PeriodicallyUpdateArgs thirty_min_args =
+      {&update_attempter, TRUE};
+  g_timeout_add(30 * 60 * 1000,
+                &chromeos_update_engine::PeriodicallyUpdate,
+                &thirty_min_args);
+
   // Run the main loop until exit time:
   g_main_loop_run(loop);
 
   // Cleanup:
   g_main_loop_unref(loop);
   update_attempter.set_dbus_service(NULL);
   g_object_unref(G_OBJECT(service));
 
   LOG(INFO) << "Chrome OS Update Engine terminating";
   return 0;
 }