hadoop NodeLabelsUtils 源码
haddop NodeLabelsUtils 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/nodelabels/NodeLabelsUtils.java
/**
* 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 java.util.stream.Collectors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.yarn.api.records.NodeAttribute;
import org.apache.hadoop.yarn.api.records.NodeLabel;
/**
* Node labels utilities.
*/
public final class NodeLabelsUtils {
private static final Logger LOG =
LoggerFactory.getLogger(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);
}
}
/**
* Returns a set of node attributes whose name exists in the provided
* <code>attributeNames</code> list.
*
* @param attributeNames For this given list of attribute names get the
* cluster NodeAttributes
* @param clusterNodeAttributes set of node Attributes
* @return set of Node Attributes which maps to the give attributes names
*/
public static Set <NodeAttribute> getNodeAttributesByName(
Set<String> attributeNames, Set<NodeAttribute> clusterNodeAttributes) {
return clusterNodeAttributes.stream()
.filter(attribute -> attributeNames
.contains(attribute.getAttributeKey().getAttributeName()))
.collect(Collectors.toSet());
}
}
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