Refactor daemon state and service async notification.
There are three supported IPC mechanism in this code: DBus, binder and
weave (over binder); which are mostly supported by all three platforms
Chrome OS, Brillo and Android. The exceptions are that Brillo and
Chrome OS still *require* DBus and support the others, while the new
Android daemon requires and supports only Binder.
This CL introduces two new interfaces: the ServiceObserverInterface and
the DaemonStateInterface.
The first one abstracts a service (or IPC service) into an interfcae
from the point of view of the daemon initialization and async
notifications of status changes. The second interface encapsulates the
state and main functionality of the update_engine daemon while leaving
the shared initialization in the main.cc and daemon.cc classes.
Bug: 25631949
TEST=`mmma system/update_engine` on edison-eng and aosp_arm-eng
TEST=FEATURES=test emerge-link update_engine
Change-Id: Ic15621031a153e14bdc4df8fcedbca1032e82c21
diff --git a/binder_service_brillo.cc b/binder_service_brillo.cc
new file mode 100644
index 0000000..45ac343
--- /dev/null
+++ b/binder_service_brillo.cc
@@ -0,0 +1,221 @@
+//
+// 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.
+//
+
+#include "update_engine/binder_service_brillo.h"
+
+#include <base/bind.h>
+
+#include <binderwrapper/binder_wrapper.h>
+
+#include <utils/String16.h>
+#include <utils/StrongPointer.h>
+
+#include "update_engine/update_status_utils.h"
+
+using android::String16;
+using android::String8;
+using android::binder::Status;
+using android::brillo::IUpdateEngineStatusCallback;
+using android::brillo::ParcelableUpdateEngineStatus;
+using android::sp;
+using brillo::ErrorPtr;
+using std::string;
+
+namespace chromeos_update_engine {
+
+namespace {
+string NormalString(const String16& in) {
+ return string{String8{in}.string()};
+}
+
+Status ToStatus(ErrorPtr* error) {
+ return Status::fromServiceSpecificError(
+ 1, String8{error->get()->GetMessage().c_str()});
+}
+} // namespace
+
+template <typename... Parameters, typename... Arguments>
+Status BinderUpdateEngineBrilloService::CallCommonHandler(
+ bool (UpdateEngineService::*Handler)(ErrorPtr*, Parameters...),
+ Arguments... arguments) {
+ ErrorPtr error;
+ if (((common_.get())->*Handler)(&error, arguments...))
+ return Status::ok();
+ return ToStatus(&error);
+}
+
+Status BinderUpdateEngineBrilloService::AttemptUpdate(
+ const String16& app_version, const String16& omaha_url, int flags) {
+ return CallCommonHandler(&UpdateEngineService::AttemptUpdate,
+ NormalString(app_version),
+ NormalString(omaha_url),
+ flags);
+}
+
+Status BinderUpdateEngineBrilloService::AttemptRollback(bool powerwash) {
+ return CallCommonHandler(&UpdateEngineService::AttemptRollback, powerwash);
+}
+
+Status BinderUpdateEngineBrilloService::CanRollback(bool* out_can_rollback) {
+ return CallCommonHandler(&UpdateEngineService::CanRollback, out_can_rollback);
+}
+
+Status BinderUpdateEngineBrilloService::ResetStatus() {
+ return CallCommonHandler(&UpdateEngineService::ResetStatus);
+}
+
+Status BinderUpdateEngineBrilloService::GetStatus(
+ ParcelableUpdateEngineStatus* status) {
+ string current_op;
+ string new_version;
+
+ auto ret = CallCommonHandler(&UpdateEngineService::GetStatus,
+ &status->last_checked_time_,
+ &status->progress_,
+ ¤t_op,
+ &new_version,
+ &status->new_size_);
+
+ if (ret.isOk()) {
+ status->current_operation_ = String16{current_op.c_str()};
+ status->new_version_ = String16{new_version.c_str()};
+ }
+
+ return ret;
+}
+
+Status BinderUpdateEngineBrilloService::RebootIfNeeded() {
+ return CallCommonHandler(&UpdateEngineService::RebootIfNeeded);
+}
+
+Status BinderUpdateEngineBrilloService::SetChannel(
+ const String16& target_channel, bool powerwash) {
+ return CallCommonHandler(&UpdateEngineService::SetChannel,
+ NormalString(target_channel),
+ powerwash);
+}
+
+Status BinderUpdateEngineBrilloService::GetChannel(bool get_current_channel,
+ String16* out_channel) {
+ string channel_string;
+ auto ret = CallCommonHandler(
+ &UpdateEngineService::GetChannel, get_current_channel, &channel_string);
+
+ *out_channel = String16(channel_string.c_str());
+ return ret;
+}
+
+Status BinderUpdateEngineBrilloService::SetP2PUpdatePermission(bool enabled) {
+ return CallCommonHandler(&UpdateEngineService::SetP2PUpdatePermission,
+ enabled);
+}
+
+Status BinderUpdateEngineBrilloService::GetP2PUpdatePermission(
+ bool* out_p2p_permission) {
+ return CallCommonHandler(&UpdateEngineService::GetP2PUpdatePermission,
+ out_p2p_permission);
+}
+
+Status BinderUpdateEngineBrilloService::SetUpdateOverCellularPermission(
+ bool enabled) {
+ return CallCommonHandler(
+ &UpdateEngineService::SetUpdateOverCellularPermission, enabled);
+}
+
+Status BinderUpdateEngineBrilloService::GetUpdateOverCellularPermission(
+ bool* out_cellular_permission) {
+ return CallCommonHandler(
+ &UpdateEngineService::GetUpdateOverCellularPermission,
+ out_cellular_permission);
+}
+
+Status BinderUpdateEngineBrilloService::GetDurationSinceUpdate(
+ int64_t* out_duration) {
+ return CallCommonHandler(&UpdateEngineService::GetDurationSinceUpdate,
+ out_duration);
+}
+
+Status BinderUpdateEngineBrilloService::GetPrevVersion(
+ String16* out_prev_version) {
+ string version_string;
+ auto ret =
+ CallCommonHandler(&UpdateEngineService::GetPrevVersion, &version_string);
+
+ *out_prev_version = String16(version_string.c_str());
+ return ret;
+}
+
+Status BinderUpdateEngineBrilloService::GetRollbackPartition(
+ String16* out_rollback_partition) {
+ string partition_string;
+ auto ret = CallCommonHandler(&UpdateEngineService::GetRollbackPartition,
+ &partition_string);
+
+ if (ret.isOk()) {
+ *out_rollback_partition = String16(partition_string.c_str());
+ }
+
+ return ret;
+}
+
+Status BinderUpdateEngineBrilloService::RegisterStatusCallback(
+ const sp<IUpdateEngineStatusCallback>& callback) {
+ callbacks_.emplace_back(callback);
+
+ auto binder_wrapper = android::BinderWrapper::Get();
+
+ binder_wrapper->RegisterForDeathNotifications(
+ IUpdateEngineStatusCallback::asBinder(callback),
+ base::Bind(&BinderUpdateEngineBrilloService::UnregisterStatusCallback,
+ base::Unretained(this),
+ base::Unretained(callback.get())));
+
+ return Status::ok();
+}
+
+void BinderUpdateEngineBrilloService::UnregisterStatusCallback(
+ IUpdateEngineStatusCallback* callback) {
+ auto it = callbacks_.begin();
+
+ for (; it != callbacks_.end() && it->get() != callback; it++)
+ ;
+
+ if (it == callbacks_.end()) {
+ LOG(ERROR) << "Got death notification for unknown callback.";
+ return;
+ }
+
+ LOG(INFO) << "Erasing orphan callback";
+ callbacks_.erase(it);
+}
+
+void BinderUpdateEngineBrilloService::SendStatusUpdate(
+ int64_t last_checked_time,
+ double progress,
+ update_engine::UpdateStatus status,
+ const string& new_version,
+ int64_t new_size) {
+ const string str_status = UpdateStatusToString(status);
+ for (auto& callback : callbacks_) {
+ callback->HandleStatusUpdate(last_checked_time,
+ progress,
+ String16{str_status.c_str()},
+ String16{new_version.c_str()},
+ new_size);
+ }
+}
+
+} // namespace chromeos_update_engine