| /* |
| * Copyright (C) 2019 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. |
| */ |
| package com.android.server.usage; |
| |
| import android.app.job.JobInfo; |
| import android.app.job.JobParameters; |
| import android.app.job.JobScheduler; |
| import android.app.job.JobService; |
| import android.app.usage.UsageStatsManagerInternal; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.os.AsyncTask; |
| import android.os.PersistableBundle; |
| |
| import com.android.server.LocalServices; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * JobService used to do any work for UsageStats while the device is idle. |
| */ |
| public class UsageStatsIdleService extends JobService { |
| |
| /** |
| * Base job ID for the pruning job - must be unique within the system server uid. |
| */ |
| private static final int PRUNE_JOB_ID = 546357475; |
| /** |
| * Job ID for the update mappings job - must be unique within the system server uid. |
| * Incrementing PRUNE_JOB_ID by 21475 (MAX_USER_ID) to ensure there is no overlap in job ids. |
| */ |
| private static final int UPDATE_MAPPINGS_JOB_ID = 546378950; |
| |
| private static final String USER_ID_KEY = "user_id"; |
| |
| static void scheduleJob(Context context, int userId) { |
| final int userJobId = PRUNE_JOB_ID + userId; // unique job id per user |
| final ComponentName component = new ComponentName(context.getPackageName(), |
| UsageStatsIdleService.class.getName()); |
| final PersistableBundle bundle = new PersistableBundle(); |
| bundle.putInt(USER_ID_KEY, userId); |
| final JobInfo pruneJob = new JobInfo.Builder(userJobId, component) |
| .setRequiresDeviceIdle(true) |
| .setExtras(bundle) |
| .setPersisted(true) |
| .build(); |
| |
| scheduleJobInternal(context, pruneJob, userJobId); |
| } |
| |
| static void scheduleUpdateMappingsJob(Context context) { |
| final ComponentName component = new ComponentName(context.getPackageName(), |
| UsageStatsIdleService.class.getName()); |
| final JobInfo updateMappingsJob = new JobInfo.Builder(UPDATE_MAPPINGS_JOB_ID, component) |
| .setPersisted(true) |
| .setMinimumLatency(TimeUnit.DAYS.toMillis(1)) |
| .setOverrideDeadline(TimeUnit.DAYS.toMillis(2)) |
| .build(); |
| |
| scheduleJobInternal(context, updateMappingsJob, UPDATE_MAPPINGS_JOB_ID); |
| } |
| |
| private static void scheduleJobInternal(Context context, JobInfo pruneJob, int jobId) { |
| final JobScheduler jobScheduler = context.getSystemService(JobScheduler.class); |
| final JobInfo pendingPruneJob = jobScheduler.getPendingJob(jobId); |
| // only schedule a new prune job if one doesn't exist already for this user |
| if (!pruneJob.equals(pendingPruneJob)) { |
| jobScheduler.cancel(jobId); // cancel any previously scheduled prune job |
| jobScheduler.schedule(pruneJob); |
| } |
| } |
| |
| static void cancelJob(Context context, int userId) { |
| cancelJobInternal(context, PRUNE_JOB_ID + userId); |
| } |
| |
| static void cancelUpdateMappingsJob(Context context) { |
| cancelJobInternal(context, UPDATE_MAPPINGS_JOB_ID); |
| } |
| |
| private static void cancelJobInternal(Context context, int jobId) { |
| final JobScheduler jobScheduler = context.getSystemService(JobScheduler.class); |
| if (jobScheduler != null) { |
| jobScheduler.cancel(jobId); |
| } |
| } |
| |
| @Override |
| public boolean onStartJob(JobParameters params) { |
| final PersistableBundle bundle = params.getExtras(); |
| final int userId = bundle.getInt(USER_ID_KEY, -1); |
| if (userId == -1 && params.getJobId() != UPDATE_MAPPINGS_JOB_ID) { |
| return false; |
| } |
| |
| AsyncTask.execute(() -> { |
| final UsageStatsManagerInternal usageStatsManagerInternal = LocalServices.getService( |
| UsageStatsManagerInternal.class); |
| if (params.getJobId() == UPDATE_MAPPINGS_JOB_ID) { |
| final boolean jobFinished = usageStatsManagerInternal.updatePackageMappingsData(); |
| jobFinished(params, !jobFinished); // reschedule if data was not updated |
| } else { |
| final boolean jobFinished = |
| usageStatsManagerInternal.pruneUninstalledPackagesData(userId); |
| jobFinished(params, !jobFinished); // reschedule if data was not pruned |
| } |
| }); |
| return true; |
| } |
| |
| @Override |
| public boolean onStopJob(JobParameters params) { |
| // Since the pruning job isn't a heavy job, we don't want to cancel it's execution midway. |
| return false; |
| } |
| } |