org.apache.activemq.artemis.utils.critical.CriticalComponent Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.activemq.artemis.utils.critical;
/**
* A Critical component enters and leaves a critical state.
* You update a long every time you enter a critical path
* you update a different long with a System.nanoTime every time you leave that path.
*
* If the enterCritical > leaveCritical at any point, then you need to measure the timeout.
* if the system stops responding, then you have something irresponsive at the system.
*/
public interface CriticalComponent {
CriticalAnalyzer getCriticalAnalyzer();
CriticalCloseable measureCritical(int path);
/**
* Check if the component is expired at a given timeout.. on any of its paths.
* @param timeout - the timeout to check if the component is expired
* @param reset - true to reset the component timer if it is expired
* @return -1 if it's ok, or the number of the path it failed
*/
boolean checkExpiration(long timeout, boolean reset);
}