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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 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.stats;
import static org.slf4j.LoggerFactory.getLogger;
import java.time.Instant;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.NonNull;
import lombok.Setter;
import lombok.Synchronized;
import lombok.ToString;
import org.onap.policy.drools.metrics.TransMetric;
import org.slf4j.Logger;
/**
* Basic policy execution statistics.
*/
@Setter(onMethod_ = @Synchronized)
@Getter(onMethod_ = @Synchronized)
@NoArgsConstructor
@EqualsAndHashCode
@ToString
public class PolicyStats {
private static final Logger logger = getLogger(PolicyStats.class);
/**
* Number of executed policy transactions.
*/
private long policyExecutedCount;
/**
* Number of successfully executed policy transactions.
*/
private long policyExecutedSuccessCount;
/**
* Number of failed executions of policy transactions.
*/
private long policyExecutedFailCount;
/**
* Last time the policy transaction was executed.
*/
private long lastExecutionTime;
/**
* Average execution time of a policy transaction.
*/
private double averageExecutionTime;
/**
* Total policy execution times.
*/
private double totalElapsedTime;
/**
* Uptime of the entity holding the stats.
*/
private long birthTime = Instant.now().toEpochMilli();
/**
* Time last transaction was started.
*/
private long lastStart;
/**
* add a stat transaction record.
*/
@Synchronized
public void stat(@NonNull TransMetric trans) {
policyExecutedCount++;
if (trans.isSuccess()) {
policyExecutedSuccessCount++;
} else {
policyExecutedFailCount++;
}
// make sure transaction has values that we care about
if (trans.getStartTime() == null) {
logger.warn("policy transaction contains no start time: {}", trans);
trans.setStartTime(null);
}
if (trans.getEndTime() == null) {
logger.warn("policy transaction contains no end time: {}", trans);
trans.setEndTime(null);
}
if (trans.getElapsedTime() == null) {
logger.warn("policy transaction contains no elapsed time: {}", trans);
trans.setElapsedTime(null);
}
// compute after the preconditions are satisfied
lastExecutionTime = trans.getEndTime().toEpochMilli();
totalElapsedTime += trans.getElapsedTime();
averageExecutionTime = totalElapsedTime / policyExecutedCount;
lastStart = trans.getStartTime().toEpochMilli();
}
}
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