| /** |
| * 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.hadoop.yarn.server.resourcemanager.monitor.invariants; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.yarn.server.resourcemanager.RMContext; |
| import org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingEditPolicy; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Abstract invariant checker, that setup common context for invariants |
| * checkers. |
| */ |
| public abstract class InvariantsChecker implements SchedulingEditPolicy { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(InvariantsChecker.class); |
| public static final String THROW_ON_VIOLATION = |
| "yarn.resourcemanager.invariant-checker.throw-on-violation"; |
| public static final String INVARIANT_MONITOR_INTERVAL = |
| "yarn.resourcemanager.invariant-checker.monitor-interval"; |
| |
| private Configuration conf; |
| private RMContext context; |
| private ResourceScheduler scheduler; |
| private boolean throwOnInvariantViolation; |
| private long monitoringInterval; |
| |
| @Override |
| public void init(Configuration config, RMContext rmContext, |
| ResourceScheduler scheduler) { |
| this.conf = config; |
| this.context = rmContext; |
| this.scheduler = scheduler; |
| this.throwOnInvariantViolation = |
| conf.getBoolean(InvariantsChecker.THROW_ON_VIOLATION, false); |
| this.monitoringInterval = |
| conf.getLong(InvariantsChecker.INVARIANT_MONITOR_INTERVAL, 1000L); |
| |
| LOG.info("Invariant checker " + this.getPolicyName() |
| + " enabled. Monitoring every " + monitoringInterval |
| + "ms, throwOnViolation=" + throwOnInvariantViolation); |
| } |
| |
| @Override |
| public long getMonitoringInterval() { |
| return monitoringInterval; |
| } |
| |
| @Override |
| public String getPolicyName() { |
| return this.getClass().getSimpleName(); |
| } |
| |
| public void logOrThrow(String message) throws InvariantViolationException { |
| if (getThrowOnInvariantViolation()) { |
| throw new InvariantViolationException(message); |
| } else { |
| LOG.warn(message); |
| } |
| } |
| |
| public boolean getThrowOnInvariantViolation() { |
| return throwOnInvariantViolation; |
| } |
| |
| public Configuration getConf() { |
| return conf; |
| } |
| |
| public RMContext getContext() { |
| return context; |
| } |
| |
| public ResourceScheduler getScheduler() { |
| return scheduler; |
| } |
| |
| } |