/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.syncope.core.propagation.impl;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.apache.syncope.common.types.PropagationTaskExecStatus;
import org.apache.syncope.core.persistence.beans.PropagationTask;
import org.apache.syncope.core.persistence.beans.TaskExec;
import org.apache.syncope.core.propagation.PropagationException;
import org.apache.syncope.core.propagation.PropagationHandler;
public class PriorityPropagationTaskExecutor extends AbstractPropagationTaskExecutor {
/**
* Sort the given collection by looking at related ExternalResource's priority, then execute.
* {@inheritDoc}
*/
@Override
public void execute(final Collection<PropagationTask> tasks, final PropagationHandler handler) {
final List<PropagationTask> prioritizedTasks = new ArrayList<PropagationTask>(tasks);
Collections.sort(prioritizedTasks, new PriorityComparator());
for (PropagationTask task : prioritizedTasks) {
LOG.debug("Execution started for {}", task);
TaskExec execution = execute(task, handler);
LOG.debug("Execution finished for {}, {}", task, execution);
// Propagation is interrupted as soon as the result of the
// communication with a primary resource is in error
PropagationTaskExecStatus execStatus;
try {
execStatus = PropagationTaskExecStatus.valueOf(execution.getStatus());
} catch (IllegalArgumentException e) {
LOG.error("Unexpected execution status found {}", execution.getStatus());
execStatus = PropagationTaskExecStatus.FAILURE;
}
if (task.getResource().isPropagationPrimary() && !execStatus.isSuccessful()) {
throw new PropagationException(task.getResource().getName(), execution.getMessage());
}
}
}
/**
* Compare propagation tasks according to related ExternalResource's priority.
*
* @see PropagationTask
* @see org.apache.syncope.core.persistence.beans.ExternalResource#propagationPriority
*/
protected static class PriorityComparator implements Comparator<PropagationTask>, Serializable {
private static final long serialVersionUID = -1969355670784448878L;
@Override
public int compare(final PropagationTask task1, final PropagationTask task2) {
int prop1 = task1.getResource().getPropagationPriority() == null
? Integer.MIN_VALUE
: task1.getResource().getPropagationPriority().intValue();
int prop2 = task2.getResource().getPropagationPriority() == null
? Integer.MIN_VALUE
: task2.getResource().getPropagationPriority().intValue();
return prop1 > prop2
? 1
: prop1 == prop2
? 0
: -1;
}
}
}