Implement update_engine weave commands
The new WeaveServiceInterface abstracs the registration and interaction
with weave whenever present. The compilation and usage of weave is
based on the BRILLO_USE_WEAVE flag.
When enabled, update_engine registers the "_updater" component with
methods to force-check for an update and change channels.
Bug: 24386758
Bug: 24386768
Test: Deployed on edison, weave commands and state available online.
Change-Id: Ic49111772e123b8a2b1971da92fe65785f186ccd
diff --git a/weave_service_factory.h b/weave_service_factory.h
new file mode 100644
index 0000000..b32e0b7
--- /dev/null
+++ b/weave_service_factory.h
@@ -0,0 +1,37 @@
+//
+// Copyright (C) 2015 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef UPDATE_ENGINE_WEAVE_SERVICE_FACTORY_H_
+#define UPDATE_ENGINE_WEAVE_SERVICE_FACTORY_H_
+
+#include <memory>
+
+#include <base/memory/ref_counted.h>
+#include <dbus/bus.h>
+
+#include "update_engine/weave_service_interface.h"
+
+namespace chromeos_update_engine {
+
+// Create a new WeaveServiceInterface instance. In case of error or when weaved
+// is disabled, returns an empty pointer.
+std::unique_ptr<WeaveServiceInterface> ConstructWeaveService(
+ const scoped_refptr<dbus::Bus>& bus,
+ WeaveServiceInterface::DelegateInterface* delegate);
+
+} // namespace chromeos_update_engine
+
+#endif // UPDATE_ENGINE_WEAVE_SERVICE_FACTORY_H_