| /* |
| * Copyright 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 <string> |
| #include <sysexits.h> |
| |
| #include <base/bind.h> |
| #include <base/command_line.h> |
| #include <base/macros.h> |
| #include <chromeos/daemons/dbus_daemon.h> |
| #include <chromeos/syslog_logging.h> |
| #include <libweaved/device.h> |
| |
| #include "animation.h" |
| #include "ledservice/dbus-proxies.h" |
| |
| using com::android::LEDService::ServiceProxy; |
| |
| class Daemon final : public chromeos::DBusDaemon { |
| public: |
| Daemon() = default; |
| |
| protected: |
| int OnInit() override; |
| |
| private: |
| void OnLEDServiceConnected(ServiceProxy* service); |
| void OnLEDServiceDisconnected(const dbus::ObjectPath& object_path); |
| |
| // Particular command handlers for various commands. |
| void OnSet(const std::weak_ptr<weaved::Command>& cmd); |
| void OnToggle(const std::weak_ptr<weaved::Command>& cmd); |
| void OnAnimate(const std::weak_ptr<weaved::Command>& cmd); |
| |
| // Helper methods to propagate device state changes to Buffet and hence to |
| // the cloud server or local clients. |
| void UpdateDeviceState(); |
| |
| std::unique_ptr<weaved::Device> device_; |
| |
| // LEDService's D-Bus object manager. |
| std::unique_ptr<com::android::LEDService::ObjectManagerProxy> led_object_mgr_; |
| |
| // Device state variables. |
| std::string status_{"idle"}; |
| |
| // LED service interface. |
| ServiceProxy* led_service_{nullptr}; |
| |
| // Current animation; |
| std::unique_ptr<Animation> animation_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Daemon); |
| }; |
| |
| int Daemon::OnInit() { |
| int return_code = chromeos::DBusDaemon::OnInit(); |
| if (return_code != EX_OK) |
| return return_code; |
| |
| device_ = weaved::Device::CreateInstance( |
| bus_, base::Bind(&Daemon::UpdateDeviceState, base::Unretained(this))); |
| device_->AddCommandHandler( |
| "_ledflasher._set", |
| base::Bind(&Daemon::OnSet, base::Unretained(this))); |
| device_->AddCommandHandler( |
| "_ledflasher._toggle", |
| base::Bind(&Daemon::OnToggle, base::Unretained(this))); |
| device_->AddCommandHandler( |
| "_ledflasher._animate", |
| base::Bind(&Daemon::OnAnimate, base::Unretained(this))); |
| |
| led_object_mgr_.reset(new com::android::LEDService::ObjectManagerProxy{bus_}); |
| led_object_mgr_->SetServiceAddedCallback( |
| base::Bind(&Daemon::OnLEDServiceConnected, base::Unretained(this))); |
| led_object_mgr_->SetServiceRemovedCallback( |
| base::Bind(&Daemon::OnLEDServiceDisconnected, base::Unretained(this))); |
| |
| LOG(INFO) << "Waiting for commands..."; |
| return EX_OK; |
| } |
| |
| void Daemon::OnLEDServiceConnected(ServiceProxy* service) { |
| led_service_ = service; |
| UpdateDeviceState(); |
| } |
| |
| void Daemon::OnLEDServiceDisconnected(const dbus::ObjectPath& object_path) { |
| animation_.reset(); |
| led_service_ = nullptr; |
| } |
| |
| void Daemon::OnSet(const std::weak_ptr<weaved::Command>& cmd) { |
| auto command = cmd.lock(); |
| if (!command) |
| return; |
| |
| if (!led_service_) { |
| CHECK(command->Abort("system_error", "ledservice unavailable", nullptr)); |
| return; |
| } |
| |
| int index = command->GetParameter<int>("_led"); |
| CHECK_GT(index, 0); |
| bool on = command->GetParameter<bool>("_on"); |
| chromeos::ErrorPtr error; |
| if (!led_service_->SetLED(index - 1, on, &error)) { |
| CHECK(command->Abort(error->GetCode(), error->GetMessage(), nullptr)); |
| return; |
| } |
| animation_.reset(); |
| status_ = "idle"; |
| UpdateDeviceState(); |
| CHECK(command->Complete({}, nullptr)); |
| } |
| |
| void Daemon::OnToggle(const std::weak_ptr<weaved::Command>& cmd) { |
| auto command = cmd.lock(); |
| if (!command) |
| return; |
| |
| if (!led_service_) { |
| CHECK(command->Abort("system_error", "ledservice unavailable", nullptr)); |
| return; |
| } |
| |
| int index = command->GetParameter<int>("_led"); |
| CHECK_GT(index, 0); |
| index--; |
| bool on = false; |
| chromeos::ErrorPtr error; |
| if(!led_service_->GetLED(index, &on, &error) || |
| !led_service_->SetLED(index, !on, &error)) { |
| CHECK(command->Abort(error->GetCode(), error->GetMessage(), nullptr)); |
| return; |
| } |
| animation_.reset(); |
| status_ = "idle"; |
| UpdateDeviceState(); |
| CHECK(command->Complete({}, nullptr)); |
| } |
| |
| void Daemon::OnAnimate(const std::weak_ptr<weaved::Command>& cmd) { |
| auto command = cmd.lock(); |
| if (!command) |
| return; |
| |
| if (!led_service_) { |
| CHECK(command->Abort("system_error", "ledservice unavailable", nullptr)); |
| return; |
| } |
| |
| double duration = command->GetParameter<double>("_duration"); |
| std::string type = command->GetParameter<std::string>("_type"); |
| animation_ = Animation::Create(led_service_, type, |
| base::TimeDelta::FromSecondsD(duration)); |
| if (animation_) { |
| status_ = "animating"; |
| animation_->Start(); |
| } else { |
| status_ = "idle"; |
| } |
| UpdateDeviceState(); |
| CHECK(command->Complete({}, nullptr)); |
| } |
| |
| void Daemon::UpdateDeviceState() { |
| if (!led_service_) |
| return; |
| |
| std::vector<bool> leds; |
| if (!led_service_->GetAllLEDs(&leds, nullptr)) |
| return; |
| |
| chromeos::VariantDictionary state_change{ |
| {"_ledflasher._status", status_}, |
| {"_ledflasher._leds", leds}, |
| }; |
| CHECK(device_->SetStateProperties(state_change, nullptr)); |
| } |
| |
| int main(int argc, char* argv[]) { |
| base::CommandLine::Init(argc, argv); |
| chromeos::InitLog(chromeos::kLogToSyslog | |
| chromeos::kLogHeader); |
| Daemon daemon; |
| return daemon.Run(); |
| } |