hadoop NodeToLabelOp 源码
haddop NodeToLabelOp 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/store/op/NodeToLabelOp.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.nodelabels.store.op;
import org.apache.hadoop.yarn.api.records.NodeId;
import org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager;
import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos;
import org.apache.hadoop.yarn.server.api.protocolrecords
.ReplaceLabelsOnNodeRequest;
import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb
.ReplaceLabelsOnNodeRequestPBImpl;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Map;
import java.util.Set;
/**
* Node to label mapping store operation for label.
*/
public class NodeToLabelOp
extends FSNodeStoreLogOp<CommonNodeLabelsManager> {
private Map<NodeId, Set<String>> nodeToLabels;
public static final int OPCODE = 1;
@Override
public void write(OutputStream os, CommonNodeLabelsManager mgr)
throws IOException {
((ReplaceLabelsOnNodeRequestPBImpl) ReplaceLabelsOnNodeRequest
.newInstance(nodeToLabels)).getProto().writeDelimitedTo(os);
}
@Override
public void recover(InputStream is, CommonNodeLabelsManager mgr)
throws IOException {
nodeToLabels = new ReplaceLabelsOnNodeRequestPBImpl(
YarnServerResourceManagerServiceProtos.ReplaceLabelsOnNodeRequestProto
.parseDelimitedFrom(is)).getNodeToLabels();
if (mgr.isCentralizedConfiguration()) {
mgr.replaceLabelsOnNode(nodeToLabels);
}
}
public NodeToLabelOp setNodeToLabels(
Map<NodeId, Set<String>> nodeToLabelsList) {
this.nodeToLabels = nodeToLabelsList;
return this;
}
public Map<NodeId, Set<String>> getNodeToLabels() {
return nodeToLabels;
}
@Override
public int getOpCode() {
return OPCODE;
}
}
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