001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.fs; 019 020import java.io.DataInput; 021import java.io.DataOutput; 022import java.io.IOException; 023 024import org.apache.hadoop.classification.InterfaceAudience; 025import org.apache.hadoop.classification.InterfaceStability; 026import org.apache.hadoop.io.Writable; 027import org.apache.hadoop.io.WritableFactories; 028import org.apache.hadoop.io.WritableFactory; 029import org.apache.hadoop.io.WritableUtils; 030import org.apache.hadoop.util.DataChecksum; 031 032/**************************************************** 033 * Provides server default configuration values to clients. 034 * 035 ****************************************************/ 036@InterfaceAudience.Public 037@InterfaceStability.Evolving 038public class FsServerDefaults implements Writable { 039 040 static { // register a ctor 041 WritableFactories.setFactory(FsServerDefaults.class, new WritableFactory() { 042 @Override 043 public Writable newInstance() { 044 return new FsServerDefaults(); 045 } 046 }); 047 } 048 049 private long blockSize; 050 private int bytesPerChecksum; 051 private int writePacketSize; 052 private short replication; 053 private int fileBufferSize; 054 private boolean encryptDataTransfer; 055 private long trashInterval; 056 private DataChecksum.Type checksumType; 057 058 public FsServerDefaults() { 059 } 060 061 public FsServerDefaults(long blockSize, int bytesPerChecksum, 062 int writePacketSize, short replication, int fileBufferSize, 063 boolean encryptDataTransfer, long trashInterval, 064 DataChecksum.Type checksumType) { 065 this.blockSize = blockSize; 066 this.bytesPerChecksum = bytesPerChecksum; 067 this.writePacketSize = writePacketSize; 068 this.replication = replication; 069 this.fileBufferSize = fileBufferSize; 070 this.encryptDataTransfer = encryptDataTransfer; 071 this.trashInterval = trashInterval; 072 this.checksumType = checksumType; 073 } 074 075 public long getBlockSize() { 076 return blockSize; 077 } 078 079 public int getBytesPerChecksum() { 080 return bytesPerChecksum; 081 } 082 083 public int getWritePacketSize() { 084 return writePacketSize; 085 } 086 087 public short getReplication() { 088 return replication; 089 } 090 091 public int getFileBufferSize() { 092 return fileBufferSize; 093 } 094 095 public boolean getEncryptDataTransfer() { 096 return encryptDataTransfer; 097 } 098 099 public long getTrashInterval() { 100 return trashInterval; 101 } 102 103 public DataChecksum.Type getChecksumType() { 104 return checksumType; 105 } 106 107 // ///////////////////////////////////////// 108 // Writable 109 // ///////////////////////////////////////// 110 @Override 111 @InterfaceAudience.Private 112 public void write(DataOutput out) throws IOException { 113 out.writeLong(blockSize); 114 out.writeInt(bytesPerChecksum); 115 out.writeInt(writePacketSize); 116 out.writeShort(replication); 117 out.writeInt(fileBufferSize); 118 WritableUtils.writeEnum(out, checksumType); 119 } 120 121 @Override 122 @InterfaceAudience.Private 123 public void readFields(DataInput in) throws IOException { 124 blockSize = in.readLong(); 125 bytesPerChecksum = in.readInt(); 126 writePacketSize = in.readInt(); 127 replication = in.readShort(); 128 fileBufferSize = in.readInt(); 129 checksumType = WritableUtils.readEnum(in, DataChecksum.Type.class); 130 } 131}