commit 538bd590de3245349050d38f9ca197deb3eaa2a4
author Amin Hassani <ahassani@chromium.org> Wed Nov 04 20:46:08 2020 -0800
committer Commit Bot <commit-bot@chromium.org> Sat Nov 14 02:44:18 2020 +0000
tree 2fade0be22c2c6bda462aa49236257cae2ca9409
parent 79fec2da41db55983cd45036deb17a2f76f934d8

update_engine: Make SystemState accessible from everywhere

SystemState is supposed to be a global context and is used lamost
everywhere. So instead of passing it to functions and keeping multiple
pointers to it, its better to do what we did in dlcservice and make it a
singleton class with a getter that can be get from everywhere.

BUG=b:171829801
TEST=unittests

Change-Id: I3b2de9394b7769b3911195ca52d61dbe49afd4dd
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/system/update_engine/+/2521792
Commit-Queue: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Jae Hoon Kim <kimjae@chromium.org>

update_manager/state_factory.cc

diff --git a/update_manager/state_factory.cc b/update_manager/state_factory.cc
index 2168974..badbe23 100644
--- a/update_manager/state_factory.cc
+++ b/update_manager/state_factory.cc
@@ -27,6 +27,7 @@
 #if USE_DBUS
 #include "update_engine/cros/dbus_connection.h"
 #endif  // USE_DBUS
+#include "update_engine/common/system_state.h"
 #include "update_engine/cros/shill_proxy.h"
 #include "update_engine/update_manager/fake_shill_provider.h"
 #include "update_engine/update_manager/real_config_provider.h"
@@ -38,17 +39,18 @@
 #include "update_engine/update_manager/real_time_provider.h"
 #include "update_engine/update_manager/real_updater_provider.h"
 
+using chromeos_update_engine::SystemState;
 using std::unique_ptr;
 
 namespace chromeos_update_manager {
 
 State* DefaultStateFactory(
     policy::PolicyProvider* policy_provider,
-    org::chromium::KioskAppServiceInterfaceProxyInterface* kiosk_app_proxy,
-    chromeos_update_engine::SystemState* system_state) {
-  chromeos_update_engine::ClockInterface* const clock = system_state->clock();
+    org::chromium::KioskAppServiceInterfaceProxyInterface* kiosk_app_proxy) {
+  chromeos_update_engine::ClockInterface* const clock =
+      SystemState::Get()->clock();
   unique_ptr<RealConfigProvider> config_provider(
-      new RealConfigProvider(system_state->hardware()));
+      new RealConfigProvider(SystemState::Get()->hardware()));
 #if USE_DBUS
   scoped_refptr<dbus::Bus> bus =
       chromeos_update_engine::DBusConnection::Get()->GetDBus();
@@ -64,11 +66,10 @@
       new RealShillProvider(new chromeos_update_engine::ShillProxy(), clock));
   unique_ptr<RealRandomProvider> random_provider(new RealRandomProvider());
   unique_ptr<RealSystemProvider> system_provider(
-      new RealSystemProvider(system_state, kiosk_app_proxy));
+      new RealSystemProvider(kiosk_app_proxy));
 
   unique_ptr<RealTimeProvider> time_provider(new RealTimeProvider(clock));
-  unique_ptr<RealUpdaterProvider> updater_provider(
-      new RealUpdaterProvider(system_state));
+  unique_ptr<RealUpdaterProvider> updater_provider(new RealUpdaterProvider());
 
   if (!(config_provider->Init() && device_policy_provider->Init() &&
         random_provider->Init() &&