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 */ 018 package org.apache.hadoop.fs; 019 020 import java.io.DataInput; 021 import java.io.DataOutput; 022 import java.io.IOException; 023 024 import org.apache.hadoop.classification.InterfaceAudience; 025 import org.apache.hadoop.classification.InterfaceStability; 026 import org.apache.hadoop.io.Writable; 027 import org.apache.hadoop.io.WritableFactories; 028 import org.apache.hadoop.io.WritableFactory; 029 030 /**************************************************** 031 * Provides server default configuration values to clients. 032 * 033 ****************************************************/ 034 @InterfaceAudience.Public 035 @InterfaceStability.Evolving 036 public class FsServerDefaults implements Writable { 037 038 static { // register a ctor 039 WritableFactories.setFactory(FsServerDefaults.class, new WritableFactory() { 040 public Writable newInstance() { 041 return new FsServerDefaults(); 042 } 043 }); 044 } 045 046 private long blockSize; 047 private int bytesPerChecksum; 048 private int writePacketSize; 049 private short replication; 050 private int fileBufferSize; 051 private boolean encryptDataTransfer; 052 private long trashInterval; 053 054 public FsServerDefaults() { 055 } 056 057 public FsServerDefaults(long blockSize, int bytesPerChecksum, 058 int writePacketSize, short replication, int fileBufferSize, 059 boolean encryptDataTransfer, long trashInterval) { 060 this.blockSize = blockSize; 061 this.bytesPerChecksum = bytesPerChecksum; 062 this.writePacketSize = writePacketSize; 063 this.replication = replication; 064 this.fileBufferSize = fileBufferSize; 065 this.encryptDataTransfer = encryptDataTransfer; 066 this.trashInterval = trashInterval; 067 } 068 069 public long getBlockSize() { 070 return blockSize; 071 } 072 073 public int getBytesPerChecksum() { 074 return bytesPerChecksum; 075 } 076 077 public int getWritePacketSize() { 078 return writePacketSize; 079 } 080 081 public short getReplication() { 082 return replication; 083 } 084 085 public int getFileBufferSize() { 086 return fileBufferSize; 087 } 088 089 public boolean getEncryptDataTransfer() { 090 return encryptDataTransfer; 091 } 092 093 public long getTrashInterval() { 094 return trashInterval; 095 } 096 097 // ///////////////////////////////////////// 098 // Writable 099 // ///////////////////////////////////////// 100 @InterfaceAudience.Private 101 public void write(DataOutput out) throws IOException { 102 out.writeLong(blockSize); 103 out.writeInt(bytesPerChecksum); 104 out.writeInt(writePacketSize); 105 out.writeShort(replication); 106 out.writeInt(fileBufferSize); 107 } 108 109 @InterfaceAudience.Private 110 public void readFields(DataInput in) throws IOException { 111 blockSize = in.readLong(); 112 bytesPerChecksum = in.readInt(); 113 writePacketSize = in.readInt(); 114 replication = in.readShort(); 115 fileBufferSize = in.readInt(); 116 } 117 }