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/*
* Copyright (C) 2016 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.os.Bundle;
import com.android.voicemail.impl.VvmLog;
/**
* A task with Postpone policy will not be executed immediately. It will wait for a while and if a
* duplicated task is queued during the duration, the task will be postponed further. The task will
* only be executed if no new task was added in postponeMillis. Useful to batch small tasks in quick
* succession together.
*/
public class PostponePolicy implements Policy {
private static final String TAG = "PostponePolicy";
private final int mPostponeMillis;
private BaseTask mTask;
public PostponePolicy(int postponeMillis) {
mPostponeMillis = postponeMillis;
}
@Override
public void onCreate(BaseTask task, Bundle extras) {
mTask = task;
mTask.setExecutionTime(mTask.getTimeMillis() + mPostponeMillis);
}
@Override
public void onBeforeExecute() {
// Do nothing
}
@Override
public void onCompleted() {
// Do nothing
}
@Override
public void onFail() {
// Do nothing
}
@Override
public void onDuplicatedTaskAdded() {
if (mTask.hasStarted()) {
return;
}
VvmLog.i(TAG, "postponing " + mTask);
mTask.setExecutionTime(mTask.getTimeMillis() + mPostponeMillis);
}
}
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