/**
* 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.hdfs.protocol;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.List;
import com.facebook.swift.codec.ThriftConstructor;
import com.facebook.swift.codec.ThriftField;
import com.facebook.swift.codec.ThriftStruct;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableFactories;
import org.apache.hadoop.io.WritableFactory;
/**
* Collection of blocks with their locations, the file length, and
* namenode meta info like data transfer version number and namespace id
*/
// DO NOT remove final without consulting {@link WrapperWritable#create(V object)}
@ThriftStruct
public final class LocatedBlocksWithMetaInfo extends VersionedLocatedBlocks {
private int namespaceid = -1; // the namespace id that the file belongs to\0
private int methodFingerPrint;
LocatedBlocksWithMetaInfo() {
}
@ThriftConstructor
public LocatedBlocksWithMetaInfo(@ThriftField(1) long fileLength,
@ThriftField(2) List<LocatedBlock> locatedBlocks, @ThriftField(3) boolean isUnderConstuction,
@ThriftField(4) int dataProtocolVersion, @ThriftField(5) int namespaceId,
@ThriftField(6) int methodFingerPrint) {
super(fileLength, locatedBlocks, isUnderConstuction, dataProtocolVersion);
this.namespaceid = namespaceId;
this.methodFingerPrint = methodFingerPrint;
}
/**
* Get namespace id
*/
@ThriftField(5)
public int getNamespaceID() {
return this.namespaceid;
}
@ThriftField(6)
public int getMethodFingerPrint() {
return methodFingerPrint;
}
//////////////////////////////////////////////////
// Writable
//////////////////////////////////////////////////
static { // register a ctor
WritableFactories.setFactory
(LocatedBlocksWithMetaInfo.class,
new WritableFactory() {
public Writable newInstance() { return new LocatedBlocksWithMetaInfo(); }
});
}
public void write(DataOutput out) throws IOException {
out.writeInt(this.namespaceid);
out.writeInt(this.methodFingerPrint);
super.write(out);
}
public void readFields(DataInput in) throws IOException {
this.namespaceid = in.readInt();
this.methodFingerPrint = in.readInt();
super.readFields(in);
}
}