Enrico Granata | 87c0545 | 2017-03-21 17:31:23 -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.car.obd2; |
| 18 | |
| 19 | import android.os.SystemClock; |
| 20 | import android.util.JsonWriter; |
| 21 | import android.util.Log; |
| 22 | import com.android.car.obd2.Obd2Command.LiveFrameCommand; |
| 23 | import java.io.IOException; |
| 24 | import java.util.ArrayList; |
| 25 | import java.util.List; |
| 26 | import java.util.Optional; |
| 27 | import java.util.Set; |
| 28 | |
| 29 | public class Obd2LiveFrameGenerator { |
Enrico Granata | ce7ee20 | 2017-04-05 14:31:41 -0700 | [diff] [blame] | 30 | public static final String FRAME_TYPE_LIVE = "live"; |
Enrico Granata | 87c0545 | 2017-03-21 17:31:23 -0700 | [diff] [blame] | 31 | public static final String TAG = Obd2LiveFrameGenerator.class.getSimpleName(); |
| 32 | |
| 33 | private final Obd2Connection mConnection; |
| 34 | private final List<LiveFrameCommand<Integer>> mIntegerCommands = new ArrayList<>(); |
| 35 | private final List<LiveFrameCommand<Float>> mFloatCommands = new ArrayList<>(); |
| 36 | |
| 37 | public Obd2LiveFrameGenerator(Obd2Connection connection) |
| 38 | throws IOException, InterruptedException { |
| 39 | mConnection = connection; |
| 40 | Set<Integer> connectionPids = connection.getSupportedPIDs(); |
| 41 | Set<Integer> apiIntegerPids = Obd2Command.getSupportedIntegerCommands(); |
| 42 | Set<Integer> apiFloatPids = Obd2Command.getSupportedFloatCommands(); |
| 43 | apiIntegerPids |
| 44 | .stream() |
| 45 | .filter(connectionPids::contains) |
| 46 | .forEach( |
| 47 | (Integer pid) -> |
| 48 | mIntegerCommands.add( |
| 49 | Obd2Command.getLiveFrameCommand( |
| 50 | Obd2Command.getIntegerCommand(pid)))); |
| 51 | apiFloatPids |
| 52 | .stream() |
| 53 | .filter(connectionPids::contains) |
| 54 | .forEach( |
| 55 | (Integer pid) -> |
| 56 | mFloatCommands.add( |
| 57 | Obd2Command.getLiveFrameCommand( |
| 58 | Obd2Command.getFloatCommand(pid)))); |
Enrico Granata | fb08d62 | 2017-03-28 10:36:16 -0700 | [diff] [blame] | 59 | Log.i( |
| 60 | TAG, |
| 61 | String.format( |
| 62 | "connectionPids = %s\napiIntegerPids=%s\napiFloatPids = %s\n" |
| 63 | + "mIntegerCommands = %s\nmFloatCommands = %s\n", |
| 64 | connectionPids, |
| 65 | apiIntegerPids, |
| 66 | apiFloatPids, |
| 67 | mIntegerCommands, |
| 68 | mFloatCommands)); |
Enrico Granata | 87c0545 | 2017-03-21 17:31:23 -0700 | [diff] [blame] | 69 | } |
| 70 | |
| 71 | public JsonWriter generate(JsonWriter jsonWriter) throws IOException { |
| 72 | return generate(jsonWriter, SystemClock.elapsedRealtimeNanos()); |
| 73 | } |
| 74 | |
| 75 | public JsonWriter generate(JsonWriter jsonWriter, long timestamp) throws IOException { |
| 76 | jsonWriter.beginObject(); |
Enrico Granata | 3a3850c | 2017-03-27 12:40:13 -0700 | [diff] [blame] | 77 | jsonWriter.name("type").value(FRAME_TYPE_LIVE); |
Enrico Granata | 87c0545 | 2017-03-21 17:31:23 -0700 | [diff] [blame] | 78 | jsonWriter.name("timestamp").value(timestamp); |
| 79 | jsonWriter.name("intValues").beginArray(); |
| 80 | for (LiveFrameCommand<Integer> command : mIntegerCommands) { |
| 81 | try { |
| 82 | Optional<Integer> result = command.run(mConnection); |
| 83 | if (result.isPresent()) { |
| 84 | jsonWriter.beginObject(); |
| 85 | jsonWriter.name("id").value(command.getPid()); |
| 86 | jsonWriter.name("value").value(result.get()); |
| 87 | jsonWriter.endObject(); |
| 88 | } |
| 89 | } catch (IOException | InterruptedException e) { |
Enrico Granata | 3a3850c | 2017-03-27 12:40:13 -0700 | [diff] [blame] | 90 | Log.w( |
| 91 | TAG, |
| 92 | String.format( |
| 93 | "unable to retrieve OBD2 pid %d due to exception: %s", |
| 94 | command.getPid(), e)); |
Enrico Granata | 87c0545 | 2017-03-21 17:31:23 -0700 | [diff] [blame] | 95 | // skip this entry |
| 96 | } |
| 97 | } |
| 98 | jsonWriter.endArray(); |
| 99 | |
| 100 | jsonWriter.name("floatValues").beginArray(); |
| 101 | for (LiveFrameCommand<Float> command : mFloatCommands) { |
| 102 | try { |
| 103 | Optional<Float> result = command.run(mConnection); |
| 104 | if (result.isPresent()) { |
| 105 | jsonWriter.beginObject(); |
| 106 | jsonWriter.name("id").value(command.getPid()); |
| 107 | jsonWriter.name("value").value(result.get()); |
| 108 | jsonWriter.endObject(); |
| 109 | } |
| 110 | } catch (IOException | InterruptedException e) { |
Enrico Granata | 3a3850c | 2017-03-27 12:40:13 -0700 | [diff] [blame] | 111 | Log.w( |
| 112 | TAG, |
| 113 | String.format( |
| 114 | "unable to retrieve OBD2 pid %d due to exception: %s", |
| 115 | command.getPid(), e)); |
Enrico Granata | 87c0545 | 2017-03-21 17:31:23 -0700 | [diff] [blame] | 116 | // skip this entry |
| 117 | } |
| 118 | } |
| 119 | jsonWriter.endArray(); |
| 120 | |
| 121 | return jsonWriter.endObject(); |
| 122 | } |
| 123 | } |