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/*
* ============LICENSE_START=======================================================
* feature-server-pool
* ================================================================================
* Copyright (C) 2020 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.serverpool;
import java.util.Collection;
import java.util.Collections;
import org.onap.policy.common.utils.services.OrderedService;
import org.onap.policy.common.utils.services.OrderedServiceImpl;
public interface ServerPoolApi extends OrderedService {
/**
* 'ServerPoolApi.impl.getList()' returns an ordered list of objects
* implementing the 'ServerPoolApi' interface.
*/
public static OrderedServiceImpl<ServerPoolApi> impl =
new OrderedServiceImpl<>(ServerPoolApi.class);
/**
* method gives all of the listening features the ability to add
* classes to the 'HttpServletServer'.
*
* @return a Collection of classes implementing REST methods
*/
public default Collection<Class<?>> servletClasses() {
return Collections.emptyList();
}
/**
* This is called in the case where no bucket migration data was received
* from the old owner of the bucket (such as if the old owner failed).
* It gives one or more features the opportunity to do the restore.
*
* @param bucket the bucket that needs restoring
*/
public default void restoreBucket(Bucket bucket) {
}
/**
* This is called whenever a 'GlobalLocks' object is updated. It was added
* in order to support persistence, but may be used elsewhere as well.
*
* @param bucket the bucket containing the 'GlobalLocks' adjunct
* @param globalLocks the 'GlobalLocks' adjunct
*/
public default void lockUpdate(Bucket bucket, TargetLock.GlobalLocks globalLocks) {
}
/**
* This is called when the state of a bucket has changed, but is currently
* stable, and it gives features the ability to do an audit. The intent is
* to make sure that the adjunct state is correct; in particular, to remove
* adjuncts that should no longer be there based upon the current state.
* Note that this method is called while being synchronized on the bucket.
*
* @param bucket the bucket to audit
* @param isOwner 'true' if the current host owns the bucket
* @param isBackup 'true' if the current host is a backup for the bucket
*/
public default void auditBucket(Bucket bucket, boolean isOwner, boolean isBackup) {
}
}
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