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/*
* Copyright (C) 2017 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.voicemail.impl.scheduling;
import android.annotation.TargetApi;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Build.VERSION_CODES;
import android.os.Bundle;
import com.android.voicemail.impl.VvmLog;
import java.util.ArrayList;
import java.util.List;
/**
* BroadcastReceiver to queue and run {@link Task} with the {@link android.app.job.JobScheduler}. A
* task is queued using a explicit broadcast to this receiver. The intent should contain enough
* information in {@link Intent#getExtras()} to construct the task (see {@link
* Tasks#createIntent(Context, Class)}). The task will be queued directly in {@link TaskExecutor} if
* it is already running, or in {@link TaskSchedulerJobService} if not.
*/
@TargetApi(VERSION_CODES.O)
public class TaskReceiver extends BroadcastReceiver {
private static final String TAG = "VvmTaskReceiver";
private static final List<Intent> deferredBroadcasts = new ArrayList<>();
/**
* When {@link TaskExecutor#isTerminating()} is {@code true}, newly added tasks will be deferred
* to allow the TaskExecutor to terminate properly. After termination is completed this should be
* called to add the tasks again.
*/
public static void resendDeferredBroadcasts(Context context) {
for (Intent intent : deferredBroadcasts) {
context.sendBroadcast(intent);
}
}
@Override
public void onReceive(Context context, Intent intent) {
if (intent == null) {
VvmLog.w(TAG, "null intent received");
return;
}
VvmLog.i(TAG, "task received");
TaskExecutor taskExecutor = TaskExecutor.getRunningInstance();
if (taskExecutor != null) {
VvmLog.i(TAG, "TaskExecutor already running");
if (taskExecutor.isTerminating()) {
// The current taskExecutor and cannot do anything and a new job cannot be scheduled. Defer
// the task until a new job can be scheduled.
VvmLog.w(TAG, "TaskExecutor is terminating, bouncing task");
deferredBroadcasts.add(intent);
return;
}
Task task = Tasks.createTask(context, intent.getExtras());
taskExecutor.addTask(task);
} else {
VvmLog.i(TAG, "scheduling new job");
List<Bundle> taskList = new ArrayList<>();
taskList.add(intent.getExtras());
TaskSchedulerJobService.scheduleJob(context, taskList, 0, true);
}
}
}
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