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/*
* Copyright (C) 2014 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.job.controllers;
import android.content.Context;
import android.util.proto.ProtoOutputStream;
import com.android.server.job.JobSchedulerService;
import com.android.server.job.StateChangedListener;
import java.io.PrintWriter;
/**
* Incorporates shared controller logic between the various controllers of the JobManager.
* These are solely responsible for tracking a list of jobs, and notifying the JM when these
* are ready to run, or whether they must be stopped.
*/
public abstract class StateController {
protected static final boolean DEBUG = JobSchedulerService.DEBUG;
protected final Context mContext;
protected final Object mLock;
protected final StateChangedListener mStateChangedListener;
public StateController(StateChangedListener stateChangedListener, Context context,
Object lock) {
mStateChangedListener = stateChangedListener;
mContext = context;
mLock = lock;
}
/**
* Implement the logic here to decide whether a job should be tracked by this controller.
* This logic is put here so the JobManager can be completely agnostic of Controller logic.
* Also called when updating a task, so implementing controllers have to be aware of
* preexisting tasks.
*/
public abstract void maybeStartTrackingJobLocked(JobStatus jobStatus, JobStatus lastJob);
/**
* Optionally implement logic here to prepare the job to be executed.
*/
public void prepareForExecutionLocked(JobStatus jobStatus) {
}
/**
* Remove task - this will happen if the task is cancelled, completed, etc.
*/
public abstract void maybeStopTrackingJobLocked(JobStatus jobStatus, JobStatus incomingJob,
boolean forUpdate);
/**
* Called when a new job is being created to reschedule an old failed job.
*/
public void rescheduleForFailureLocked(JobStatus newJob, JobStatus failureToReschedule) {
}
public abstract void dumpControllerStateLocked(PrintWriter pw, int filterUid);
public abstract void dumpControllerStateLocked(ProtoOutputStream proto, long fieldId,
int filterUid);
}
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