/*
* The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
* (the "License"). You may not use this work except in compliance with the License, which is
* available at www.apache.org/licenses/LICENSE-2.0
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied, as more fully set forth in the License.
*
* See the NOTICE file distributed with this work for information regarding copyright ownership.
*/
package alluxio.master.journal.options;
import com.google.common.base.Objects;
/**
* Options to create a journal reader.
*/
public final class JournalReaderOptions {
/** The first log sequence number to read in the journal reader. */
private long mNextSequenceNumber;
/** Whether the journal reader is running in a primary master. */
private boolean mPrimary;
private JournalReaderOptions() {} // prevent instantiation
/**
* @return the default journal reader create options
*/
public static JournalReaderOptions defaults() {
return new JournalReaderOptions();
}
/**
* @return the next sequence number
*/
public long getNextSequenceNumber() {
return mNextSequenceNumber;
}
/**
* @return whether journal reader is to run in a primary master
*/
public boolean isPrimary() {
return mPrimary;
}
/**
* @param nextSequenceNumber the next sequence number
* @return the updated options
*/
public JournalReaderOptions setNextSequenceNumber(long nextSequenceNumber) {
mNextSequenceNumber = nextSequenceNumber;
return this;
}
/**
* @param primary whether jorunal reader is to run in a primary master
* @return the updated options
*/
public JournalReaderOptions setPrimary(boolean primary) {
mPrimary = primary;
return this;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof JournalReaderOptions)) {
return false;
}
JournalReaderOptions that = (JournalReaderOptions) o;
return Objects.equal(mNextSequenceNumber, that.mNextSequenceNumber)
&& Objects.equal(mPrimary, that.mPrimary);
}
@Override
public int hashCode() {
return Objects.hashCode(mNextSequenceNumber, mPrimary);
}
@Override
public String toString() {
return Objects.toStringHelper(this)
.add("nextSequenceNumber", mNextSequenceNumber)
.add("primary", mPrimary).toString();
}
}