Neil Fuller | cd1a109 | 2017-09-13 21:59:59 +0100 | [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.timezone; |
| 18 | |
| 19 | import com.android.server.LocalServices; |
| 20 | |
| 21 | import android.app.job.JobInfo; |
| 22 | import android.app.job.JobParameters; |
| 23 | import android.app.job.JobScheduler; |
| 24 | import android.app.job.JobService; |
| 25 | import android.content.ComponentName; |
| 26 | import android.content.Context; |
| 27 | import android.util.Slog; |
| 28 | |
| 29 | /** |
| 30 | * A JobService used to trigger time zone rules update work when a device falls idle. |
| 31 | */ |
| 32 | public final class TimeZoneUpdateIdler extends JobService { |
| 33 | |
| 34 | private static final String TAG = "timezone.TimeZoneUpdateIdler"; |
| 35 | |
| 36 | /** The static job ID used to handle on-idle work. */ |
| 37 | // Must be unique within UID (system service) |
| 38 | private static final int TIME_ZONE_UPDATE_IDLE_JOB_ID = 27042305; |
| 39 | |
| 40 | @Override |
| 41 | public boolean onStartJob(JobParameters params) { |
| 42 | RulesManagerService rulesManagerService = |
| 43 | LocalServices.getService(RulesManagerService.class); |
| 44 | |
| 45 | Slog.d(TAG, "onStartJob() called"); |
| 46 | |
| 47 | // Note: notifyIdle() explicitly handles canceling / re-scheduling so no need to reschedule |
| 48 | // here. |
| 49 | rulesManagerService.notifyIdle(); |
| 50 | |
| 51 | // Everything is handled synchronously. We are done. |
| 52 | return false; |
| 53 | } |
| 54 | |
| 55 | @Override |
| 56 | public boolean onStopJob(JobParameters params) { |
| 57 | // Reschedule if stopped unless it was cancelled due to unschedule(). |
| 58 | boolean reschedule = params.getStopReason() != JobParameters.REASON_CANCELED; |
| 59 | Slog.d(TAG, "onStopJob() called: Reschedule=" + reschedule); |
| 60 | return reschedule; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Schedules the TimeZoneUpdateIdler job service to run once. |
| 65 | * |
| 66 | * @param context Context to use to get a job scheduler. |
| 67 | */ |
| 68 | public static void schedule(Context context, long minimumDelayMillis) { |
| 69 | // Request that the JobScheduler tell us when the device falls idle. |
| 70 | JobScheduler jobScheduler = |
| 71 | (JobScheduler) context.getSystemService(Context.JOB_SCHEDULER_SERVICE); |
| 72 | |
| 73 | // The TimeZoneUpdateIdler will send an intent that will trigger the Receiver. |
| 74 | ComponentName idlerJobServiceName = |
| 75 | new ComponentName(context, TimeZoneUpdateIdler.class); |
| 76 | |
| 77 | // We require the device is idle, but also that it is charging to be as non-invasive as |
| 78 | // we can. |
| 79 | JobInfo.Builder jobInfoBuilder = |
| 80 | new JobInfo.Builder(TIME_ZONE_UPDATE_IDLE_JOB_ID, idlerJobServiceName) |
| 81 | .setRequiresDeviceIdle(true) |
| 82 | .setRequiresCharging(true) |
| 83 | .setMinimumLatency(minimumDelayMillis); |
| 84 | |
| 85 | Slog.d(TAG, "schedule() called: minimumDelayMillis=" + minimumDelayMillis); |
| 86 | jobScheduler.schedule(jobInfoBuilder.build()); |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Unschedules the TimeZoneUpdateIdler job service. |
| 91 | * |
| 92 | * @param context Context to use to get a job scheduler. |
| 93 | */ |
| 94 | public static void unschedule(Context context) { |
| 95 | JobScheduler jobScheduler = |
| 96 | (JobScheduler) context.getSystemService(Context.JOB_SCHEDULER_SERVICE); |
| 97 | Slog.d(TAG, "unschedule() called"); |
| 98 | jobScheduler.cancel(TIME_ZONE_UPDATE_IDLE_JOB_ID); |
| 99 | } |
| 100 | } |