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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018-2019, 2021 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.pooling.message;
import lombok.NoArgsConstructor;
import org.onap.policy.drools.pooling.PoolingFeatureException;
/**
* Indicates that the "source" of this message is now the "lead" host.
*/
@NoArgsConstructor
public class Leader extends MessageWithAssignments {
/**
* Constructor.
*
* @param source host on which the message originated
* @param assignments assignments
*/
public Leader(String source, BucketAssignments assignments) {
super(source, assignments);
}
/**
* Also verifies that buckets have been assigned and that the source is
* indeed the leader.
*/
@Override
public void checkValidity() throws PoolingFeatureException {
super.checkValidity();
BucketAssignments assignments = getAssignments();
if (assignments == null) {
throw new PoolingFeatureException("missing message bucket assignments");
}
String leader = getSource();
if (!assignments.hasAssignment(leader)) {
throw new PoolingFeatureException("leader " + leader + " has no bucket assignments");
}
for (String host : assignments.getHostArray()) {
if (host.compareTo(leader) < 0) {
throw new PoolingFeatureException("invalid leader " + leader + ", should be " + host);
}
}
}
}
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