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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018-2019 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.apps.controlloop.feature.trans;
import java.util.List;
import java.util.UUID;
import org.onap.policy.controlloop.VirtualControlLoopNotification;
import org.onap.policy.drools.system.PolicyController;
/**
* Control Loop Metrics Tracker.
*/
public interface ControlLoopMetrics {
/**
* Singleton manager object.
*/
ControlLoopMetrics manager = new CacheBasedControlLoopMetricsManager();
/**
* Gets all transaction identifiers being monitored.
*
* @return transaction id list
*/
List<UUID> getTransactionIds();
/**
* Gets all detailed transactions.
*
* @return list of transactions
*/
List<VirtualControlLoopNotification> getTransactions();
/**
* Track controller's notification events.
*
* @param controller policy controller sending out notification
* @param notification notification
*/
void transactionEvent(PolicyController controller, VirtualControlLoopNotification notification);
/**
* Gets an in-progress transaction.
*
* @param requestId request ID
* @return in progress notification
*/
VirtualControlLoopNotification getTransaction(UUID requestId);
/**
* Removes an in-progress transaction.
*
* @param requestId request ID
*/
void removeTransaction(UUID requestId);
/**
* Get cache size.
*
* @return cache size
*/
long getCacheSize();
/**
* Get cache size.
*
* @return cache size
*/
long getCacheOccupancy();
/**
* Sets cache size.
*
* @param cacheSize cache size
*/
void setMaxCacheSize(long cacheSize);
/**
* Cached transaction expiration timeout in seconds.
*
* @return transaction timeout in seconds
*/
long getTransactionTimeout();
/**
* Sets transaction timeout in seconds.
*
* @param transactionTimeout transaction timeout in seconds
*/
void setTransactionTimeout(long transactionTimeout);
/**
* Reset cache.
*
* @param cacheSize new cache size
* @param transactionTimeout new transaction timeout in seconds
*/
void resetCache(long cacheSize, long transactionTimeout);
/**
* Refresh underlying transaction management.
*/
void refresh();
}
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