| /** |
| * 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.router; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceAudience.Public; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Common utility methods used by the Router server. |
| * |
| */ |
| @Private |
| @Unstable |
| public final class RouterServerUtil { |
| |
| /** Disable constructor. */ |
| private RouterServerUtil() { |
| } |
| |
| public static final Logger LOG = |
| LoggerFactory.getLogger(RouterServerUtil.class); |
| |
| /** |
| * Throws an exception due to an error. |
| * |
| * @param errMsg the error message |
| * @param t the throwable raised in the called class. |
| * @throws YarnException on failure |
| */ |
| @Public |
| @Unstable |
| public static void logAndThrowException(String errMsg, Throwable t) |
| throws YarnException { |
| if (t != null) { |
| LOG.error(errMsg, t); |
| throw new YarnException(errMsg, t); |
| } else { |
| LOG.error(errMsg); |
| throw new YarnException(errMsg); |
| } |
| } |
| |
| } |