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Elasticsearch subproject :server
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.cluster.metadata;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;
import java.io.IOException;
/**
* Snapshot ID - repository name + snapshot name
*/
public class SnapshotId implements Streamable {
private String repository;
private String snapshot;
// Caching hash code
private int hashCode;
private SnapshotId() {
}
/**
* Constructs new snapshot id
*
* @param repository repository name
* @param snapshot snapshot name
*/
public SnapshotId(String repository, String snapshot) {
this.repository = repository;
this.snapshot = snapshot;
this.hashCode = computeHashCode();
}
/**
* Returns repository name
*
* @return repository name
*/
public String getRepository() {
return repository;
}
/**
* Returns snapshot name
*
* @return snapshot name
*/
public String getSnapshot() {
return snapshot;
}
@Override
public String toString() {
return repository + ":" + snapshot;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null) return false;
SnapshotId snapshotId = (SnapshotId) o;
return snapshot.equals(snapshotId.snapshot) && repository.equals(snapshotId.repository);
}
@Override
public int hashCode() {
return hashCode;
}
private int computeHashCode() {
int result = repository != null ? repository.hashCode() : 0;
result = 31 * result + snapshot.hashCode();
return result;
}
/**
* Reads snapshot id from stream input
*
* @param in stream input
* @return snapshot id
*/
public static SnapshotId readSnapshotId(StreamInput in) throws IOException {
SnapshotId snapshot = new SnapshotId();
snapshot.readFrom(in);
return snapshot;
}
/**
* {@inheritDoc}
*/
@Override
public void readFrom(StreamInput in) throws IOException {
repository = in.readString();
snapshot = in.readString();
hashCode = computeHashCode();
}
/**
* {@inheritDoc}
*/
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(repository);
out.writeString(snapshot);
}
}