/*
* 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.flume.channel.file;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.flume.channel.file.proto.ProtosFactory;
import com.google.common.base.Preconditions;
/**
* Represents a Take on disk
*/
class Take extends TransactionEventRecord {
private int offset;
private int fileID;
Take(Long transactionID, Long logWriteOrderID) {
super(transactionID, logWriteOrderID);
}
Take(Long transactionID, Long logWriteOrderID, int offset, int fileID) {
this(transactionID, logWriteOrderID);
this.offset = offset;
this.fileID = fileID;
}
int getOffset() {
return offset;
}
int getFileID() {
return fileID;
}
@Override
public void readFields(DataInput in) throws IOException {
super.readFields(in);
offset = in.readInt();
fileID = in.readInt();
}
@Override
public void write(DataOutput out) throws IOException {
super.write(out);
out.writeInt(offset);
out.writeInt(fileID);
}
@Override
void writeProtos(OutputStream out) throws IOException {
ProtosFactory.Take.Builder takeBuilder = ProtosFactory.Take.newBuilder();
takeBuilder.setFileID(fileID);
takeBuilder.setOffset(offset);
takeBuilder.build().writeDelimitedTo(out);
}
@Override
void readProtos(InputStream in) throws IOException {
ProtosFactory.Take take = Preconditions.checkNotNull(ProtosFactory.
Take.parseDelimitedFrom(in), "Take cannot be null");
fileID = take.getFileID();
offset = take.getOffset();
}
@Override
short getRecordType() {
return Type.TAKE.get();
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("Take [offset=");
builder.append(offset);
builder.append(", fileID=");
builder.append(fileID);
builder.append(", getLogWriteOrderID()=");
builder.append(getLogWriteOrderID());
builder.append(", getTransactionID()=");
builder.append(getTransactionID());
builder.append("]");
return builder.toString();
}
}