Keun-young Park | 067cf3e | 2017-06-05 12:20:41 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.car; |
| 18 | |
| 19 | import android.content.ComponentName; |
| 20 | import android.content.Context; |
| 21 | import android.content.Intent; |
| 22 | import android.content.ServiceConnection; |
| 23 | import android.os.Binder; |
| 24 | import android.os.IBinder; |
| 25 | import android.os.Parcel; |
| 26 | import android.os.RemoteException; |
| 27 | import android.os.UserHandle; |
| 28 | import android.util.Slog; |
| 29 | |
| 30 | import com.android.internal.car.ICarServiceHelper; |
| 31 | import com.android.server.SystemService; |
| 32 | |
| 33 | /** |
| 34 | * System service side companion service for CarService. |
| 35 | * Starts car service and provide necessary API for CarService. Only for car product. |
| 36 | */ |
| 37 | public class CarServiceHelperService extends SystemService { |
| 38 | private static final String TAG = "CarServiceHelper"; |
| 39 | private static final String CAR_SERVICE_INTERFACE = "android.car.ICar"; |
| 40 | private final ICarServiceHelperImpl mHelper = new ICarServiceHelperImpl(); |
| 41 | private IBinder mCarService; |
| 42 | private final ServiceConnection mCarServiceConnection = new ServiceConnection() { |
| 43 | |
| 44 | @Override |
| 45 | public void onServiceConnected(ComponentName componentName, IBinder iBinder) { |
| 46 | Slog.i(TAG, "**CarService connected**"); |
| 47 | mCarService = iBinder; |
| 48 | // Cannot depend on ICar which is defined in CarService, so handle binder call directly |
| 49 | // instead. |
| 50 | // void setCarServiceHelper(in IBinder helper) |
| 51 | Parcel data = Parcel.obtain(); |
| 52 | data.writeInterfaceToken(CAR_SERVICE_INTERFACE); |
| 53 | data.writeStrongBinder(mHelper.asBinder()); |
| 54 | try { |
| 55 | mCarService.transact(IBinder.FIRST_CALL_TRANSACTION, // setCarServiceHelper |
| 56 | data, null, Binder.FLAG_ONEWAY); |
| 57 | } catch (RemoteException e) { |
| 58 | Slog.w(TAG, "RemoteException from car service", e); |
| 59 | handleCarServiceCrash(); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | @Override |
| 64 | public void onServiceDisconnected(ComponentName componentName) { |
| 65 | handleCarServiceCrash(); |
| 66 | } |
| 67 | }; |
| 68 | |
| 69 | public CarServiceHelperService(Context context) { |
| 70 | super(context); |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public void onStart() { |
| 75 | Intent intent = new Intent(); |
| 76 | intent.setPackage("com.android.car"); |
| 77 | intent.setAction(CAR_SERVICE_INTERFACE); |
| 78 | if (!getContext().bindServiceAsUser(intent, mCarServiceConnection, Context.BIND_AUTO_CREATE, |
| 79 | UserHandle.SYSTEM)) { |
| 80 | Slog.wtf(TAG, "cannot start car service"); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | private void handleCarServiceCrash() { |
| 85 | //TODO define recovery bahavior |
| 86 | } |
| 87 | |
| 88 | private class ICarServiceHelperImpl extends ICarServiceHelper.Stub { |
| 89 | //TODO |
| 90 | } |
| 91 | } |