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/*
* 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.index;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.ParseFieldMatcher;
import org.elasticsearch.common.ParseFieldMatcherSupplier;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.common.xcontent.ObjectParser;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.IOException;
import java.util.Objects;
/**
* A value class representing the basic required properties of an Elasticsearch index.
*/
public class Index implements Writeable, ToXContent {
public static final Index[] EMPTY_ARRAY = new Index[0];
private static final String INDEX_UUID_KEY = "index_uuid";
private static final String INDEX_NAME_KEY = "index_name";
private static final ObjectParser<Builder, ParseFieldMatcherSupplier> INDEX_PARSER = new ObjectParser<>("index", Builder::new);
static {
INDEX_PARSER.declareString(Builder::name, new ParseField(INDEX_NAME_KEY));
INDEX_PARSER.declareString(Builder::uuid, new ParseField(INDEX_UUID_KEY));
}
private final String name;
private final String uuid;
public Index(String name, String uuid) {
this.name = Objects.requireNonNull(name).intern();
this.uuid = Objects.requireNonNull(uuid).intern();
}
/**
* Read from a stream.
*/
public Index(StreamInput in) throws IOException {
this.name = in.readString();
this.uuid = in.readString();
}
public String getName() {
return this.name;
}
public String getUUID() {
return uuid;
}
@Override
public String toString() {
/*
* If we have a uuid we put it in the toString so it'll show up in logs which is useful as more and more things use the uuid rather
* than the name as the lookup key for the index.
*/
if (ClusterState.UNKNOWN_UUID.equals(uuid)) {
return "[" + name + "]";
}
return "[" + name + "/" + uuid + "]";
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null) {
return false;
}
Index index1 = (Index) o;
return uuid.equals(index1.uuid) && name.equals(index1.name); // allow for _na_ uuid
}
@Override
public int hashCode() {
int result = name.hashCode();
result = 31 * result + uuid.hashCode();
return result;
}
@Override
public void writeTo(final StreamOutput out) throws IOException {
out.writeString(name);
out.writeString(uuid);
}
@Override
public XContentBuilder toXContent(final XContentBuilder builder, final Params params) throws IOException {
builder.startObject();
builder.field(INDEX_NAME_KEY, name);
builder.field(INDEX_UUID_KEY, uuid);
return builder.endObject();
}
public static Index fromXContent(final XContentParser parser) throws IOException {
return INDEX_PARSER.parse(parser, () -> ParseFieldMatcher.STRICT).build();
}
public static final Index parseIndex(final XContentParser parser, final ParseFieldMatcherSupplier supplier) {
return INDEX_PARSER.apply(parser, supplier).build();
}
/**
* Builder for Index objects. Used by ObjectParser instances only.
*/
private static final class Builder {
private String name;
private String uuid;
public void name(final String name) {
this.name = name;
}
public void uuid(final String uuid) {
this.uuid = uuid;
}
public Index build() {
return new Index(name, uuid);
}
}
}
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