| /** |
| * 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.nodelabels; |
| |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.yarn.api.records.NodeLabel; |
| |
| /** |
| * Node labels utilities. |
| */ |
| public final class NodeLabelsUtils { |
| private static final Log LOG = LogFactory.getLog(NodeLabelsUtils.class); |
| |
| private NodeLabelsUtils() { /* Hidden constructor */ } |
| |
| public static Set<String> convertToStringSet(Set<NodeLabel> nodeLabels) { |
| if (null == nodeLabels) { |
| return null; |
| } |
| Set<String> labels = new HashSet<String>(); |
| for (NodeLabel label : nodeLabels) { |
| labels.add(label.getName()); |
| } |
| return labels; |
| } |
| |
| public static void verifyCentralizedNodeLabelConfEnabled(String operation, |
| boolean isCentralizedNodeLabelConfiguration) throws IOException { |
| if (!isCentralizedNodeLabelConfiguration) { |
| String msg = |
| String.format("Error when invoke method=%s because " |
| + "centralized node label configuration is not enabled.", |
| operation); |
| LOG.error(msg); |
| throw new IOException(msg); |
| } |
| } |
| } |