PruneWorkRunnable.java
/*
* Copyright 2018 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 androidx.work.impl.utils;
import androidx.annotation.RestrictTo;
import androidx.work.Operation;
import androidx.work.impl.OperationImpl;
import androidx.work.impl.WorkDatabase;
import androidx.work.impl.WorkManagerImpl;
import androidx.work.impl.model.WorkSpecDao;
/**
* A Runnable that prunes work in the background. Pruned work meets the following criteria:
* - Is finished (succeeded, failed, or cancelled)
* - Has zero unfinished dependents
*
* @hide
*/
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
public class PruneWorkRunnable implements Runnable {
private final WorkManagerImpl mWorkManagerImpl;
private final OperationImpl mOperation;
public PruneWorkRunnable(WorkManagerImpl workManagerImpl) {
mWorkManagerImpl = workManagerImpl;
mOperation = new OperationImpl();
}
/**
* @return The {@link Operation} that encapsulates the state of the {@link PruneWorkRunnable}.
*/
public Operation getOperation() {
return mOperation;
}
@Override
public void run() {
try {
WorkDatabase workDatabase = mWorkManagerImpl.getWorkDatabase();
WorkSpecDao workSpecDao = workDatabase.workSpecDao();
workSpecDao.pruneFinishedWorkWithZeroDependentsIgnoringKeepForAtLeast();
mOperation.setState(Operation.SUCCESS);
} catch (Throwable exception) {
mOperation.setState(new Operation.State.FAILURE(exception));
}
}
}