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Diffstat (limited to 'common/openecomp-logging-lib/openecomp-logging-core/src/main/java/org/openecomp/core/logging/aspects/MetricsAspect.java')
-rw-r--r-- | common/openecomp-logging-lib/openecomp-logging-core/src/main/java/org/openecomp/core/logging/aspects/MetricsAspect.java | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/common/openecomp-logging-lib/openecomp-logging-core/src/main/java/org/openecomp/core/logging/aspects/MetricsAspect.java b/common/openecomp-logging-lib/openecomp-logging-core/src/main/java/org/openecomp/core/logging/aspects/MetricsAspect.java new file mode 100644 index 0000000000..9e8c7f0aa8 --- /dev/null +++ b/common/openecomp-logging-lib/openecomp-logging-core/src/main/java/org/openecomp/core/logging/aspects/MetricsAspect.java @@ -0,0 +1,72 @@ +/*- + * ============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.core.logging.aspects; + +import org.aspectj.lang.ProceedingJoinPoint; +import org.aspectj.lang.annotation.Around; +import org.aspectj.lang.annotation.Aspect; +import org.openecomp.core.logging.api.Logger; +import org.openecomp.core.logging.api.LoggerFactory; +import org.openecomp.core.logging.api.annotations.Metrics; + +/** + * <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> + * + * @see Metrics + */ +@Aspect +public class MetricsAspect { + + private static final String MESSAGE_TEMPLATE = "'{}' took {} milliseconds"; + + /** + * Log execution time object. + * + * @param pjp the pjp + * @return the object + * @throws Throwable the throwable + */ + @Around("@annotation(org.openecomp.core.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.isMetricsEnabled()) { + + final String method = pjp.getSignature().getName(); + final long start = System.currentTimeMillis(); + + try { + return pjp.proceed(); + } finally { + logger.metrics(MESSAGE_TEMPLATE, method, System.currentTimeMillis() - start); + } + + } else { + return pjp.proceed(); + } + } +} |