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Diffstat (limited to 'openecomp-be/lib/openecomp-logging-lib/openecomp-sdc-logging-core/src/main/java/org/openecomp/sdc/logging/aspects/MetricsAspect.java')
-rw-r--r-- | openecomp-be/lib/openecomp-logging-lib/openecomp-sdc-logging-core/src/main/java/org/openecomp/sdc/logging/aspects/MetricsAspect.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/openecomp-be/lib/openecomp-logging-lib/openecomp-sdc-logging-core/src/main/java/org/openecomp/sdc/logging/aspects/MetricsAspect.java b/openecomp-be/lib/openecomp-logging-lib/openecomp-sdc-logging-core/src/main/java/org/openecomp/sdc/logging/aspects/MetricsAspect.java new file mode 100644 index 0000000000..782362b912 --- /dev/null +++ b/openecomp-be/lib/openecomp-logging-lib/openecomp-sdc-logging-core/src/main/java/org/openecomp/sdc/logging/aspects/MetricsAspect.java @@ -0,0 +1,70 @@ +/*- + * ============LICENSE_START======================================================= + * SDC + * ================================================================================ + * Copyright (C) 2017 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.openecomp.sdc.logging.aspects; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.aspectj.lang.ProceedingJoinPoint; +import org.aspectj.lang.annotation.Around; +import org.aspectj.lang.annotation.Aspect; +import org.slf4j.Marker; +import org.slf4j.MarkerFactory; + +/** + * <p>Wraps around any method annotated with {@link Metrics} to measure and log its execution time + * in milliseconds.</p> + * <p>In order for the aspect to be used, AspectJ annotation processing must be tuned on and this + * particular aspect enabled. Conversely, it can be disabled completely if the application does not + * need to log metrics.</p> + * <p>See, for example, <a href="http://docs.spring.io/spring/docs/current/spring-framework-reference/html/aop.html"> + * Aspect Oriented Programming with Spring</a>.</p> + * + * @author evitaliy + * @see Metrics + * @since 27/07/2016. + */ +@Aspect +public class MetricsAspect { + + private static final String MESSAGE_TEMPLATE = "'{}' took {} milliseconds"; + private static final Marker METRICS = MarkerFactory.getMarker("METRICS"); + + @Around("@annotation(org.openecomp.sdc.logging.api.annotations.Metrics)") + public Object logExecutionTime(ProceedingJoinPoint pjp) throws Throwable { + + final Logger logger = LoggerFactory.getLogger(pjp.getSignature().getDeclaringTypeName()); + // measure and log only if the logger for this class is enabled + if (logger.isInfoEnabled()) { + + final String method = pjp.getSignature().getName(); + final long start = System.currentTimeMillis(); + + try { + return pjp.proceed(); + } finally { + logger.info(METRICS, MESSAGE_TEMPLATE, method, System.currentTimeMillis() - start); + } + + } else { + return pjp.proceed(); + } + } +} |