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org.elasticsearch.cluster.metadata.AliasMetaData Maven / Gradle / Ivy
/*
* 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 com.google.common.collect.ImmutableSet;
import org.elasticsearch.ElasticsearchGenerationException;
import org.elasticsearch.cluster.AbstractDiffable;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.compress.CompressedXContent;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.IOException;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
/**
*
*/
public class AliasMetaData extends AbstractDiffable {
public static final AliasMetaData PROTO = new AliasMetaData("", null, null, null);
private final String alias;
private final CompressedXContent filter;
private final String indexRouting;
private final String searchRouting;
private final Set searchRoutingValues;
private AliasMetaData(String alias, CompressedXContent filter, String indexRouting, String searchRouting) {
this.alias = alias;
this.filter = filter;
this.indexRouting = indexRouting;
this.searchRouting = searchRouting;
if (searchRouting != null) {
searchRoutingValues = Collections.unmodifiableSet(Strings.splitStringByCommaToSet(searchRouting));
} else {
searchRoutingValues = ImmutableSet.of();
}
}
private AliasMetaData(AliasMetaData aliasMetaData, String alias) {
this(alias, aliasMetaData.filter(), aliasMetaData.indexRouting(), aliasMetaData.searchRouting());
}
public String alias() {
return alias;
}
public String getAlias() {
return alias();
}
public CompressedXContent filter() {
return filter;
}
public CompressedXContent getFilter() {
return filter();
}
public boolean filteringRequired() {
return filter != null;
}
public String getSearchRouting() {
return searchRouting();
}
public String searchRouting() {
return searchRouting;
}
public String getIndexRouting() {
return indexRouting();
}
public String indexRouting() {
return indexRouting;
}
public Set searchRoutingValues() {
return searchRoutingValues;
}
public static Builder builder(String alias) {
return new Builder(alias);
}
public static Builder newAliasMetaDataBuilder(String alias) {
return new Builder(alias);
}
/**
* Creates a new AliasMetaData instance with same content as the given one, but with a different alias name
*/
public static AliasMetaData newAliasMetaData(AliasMetaData aliasMetaData, String newAlias) {
return new AliasMetaData(aliasMetaData, newAlias);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
AliasMetaData that = (AliasMetaData) o;
if (alias != null ? !alias.equals(that.alias) : that.alias != null) return false;
if (filter != null ? !filter.equals(that.filter) : that.filter != null) return false;
if (indexRouting != null ? !indexRouting.equals(that.indexRouting) : that.indexRouting != null) return false;
if (searchRouting != null ? !searchRouting.equals(that.searchRouting) : that.searchRouting != null)
return false;
return true;
}
@Override
public int hashCode() {
int result = alias != null ? alias.hashCode() : 0;
result = 31 * result + (filter != null ? filter.hashCode() : 0);
result = 31 * result + (indexRouting != null ? indexRouting.hashCode() : 0);
result = 31 * result + (searchRouting != null ? searchRouting.hashCode() : 0);
return result;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(alias());
if (filter() != null) {
out.writeBoolean(true);
filter.writeTo(out);
} else {
out.writeBoolean(false);
}
if (indexRouting() != null) {
out.writeBoolean(true);
out.writeString(indexRouting());
} else {
out.writeBoolean(false);
}
if (searchRouting() != null) {
out.writeBoolean(true);
out.writeString(searchRouting());
} else {
out.writeBoolean(false);
}
}
@Override
public AliasMetaData readFrom(StreamInput in) throws IOException {
String alias = in.readString();
CompressedXContent filter = null;
if (in.readBoolean()) {
filter = CompressedXContent.readCompressedString(in);
}
String indexRouting = null;
if (in.readBoolean()) {
indexRouting = in.readString();
}
String searchRouting = null;
if (in.readBoolean()) {
searchRouting = in.readString();
}
return new AliasMetaData(alias, filter, indexRouting, searchRouting);
}
public static class Builder {
private final String alias;
private CompressedXContent filter;
private String indexRouting;
private String searchRouting;
public Builder(String alias) {
this.alias = alias;
}
public Builder(AliasMetaData aliasMetaData) {
this(aliasMetaData.alias());
filter = aliasMetaData.filter();
indexRouting = aliasMetaData.indexRouting();
searchRouting = aliasMetaData.searchRouting();
}
public String alias() {
return alias;
}
public Builder filter(CompressedXContent filter) {
this.filter = filter;
return this;
}
public Builder filter(String filter) {
if (!Strings.hasLength(filter)) {
this.filter = null;
return this;
}
try {
try (XContentParser parser = XContentFactory.xContent(filter).createParser(filter)) {
filter(parser.mapOrdered());
}
return this;
} catch (IOException e) {
throw new ElasticsearchGenerationException("Failed to generate [" + filter + "]", e);
}
}
public Builder filter(Map filter) {
if (filter == null || filter.isEmpty()) {
this.filter = null;
return this;
}
try {
XContentBuilder builder = XContentFactory.jsonBuilder().map(filter);
this.filter = new CompressedXContent(builder.bytes());
return this;
} catch (IOException e) {
throw new ElasticsearchGenerationException("Failed to build json for alias request", e);
}
}
public Builder filter(XContentBuilder filterBuilder) {
try {
return filter(filterBuilder.string());
} catch (IOException e) {
throw new ElasticsearchGenerationException("Failed to build json for alias request", e);
}
}
public Builder routing(String routing) {
this.indexRouting = routing;
this.searchRouting = routing;
return this;
}
public Builder indexRouting(String indexRouting) {
this.indexRouting = indexRouting;
return this;
}
public Builder searchRouting(String searchRouting) {
this.searchRouting = searchRouting;
return this;
}
public AliasMetaData build() {
return new AliasMetaData(alias, filter, indexRouting, searchRouting);
}
public static void toXContent(AliasMetaData aliasMetaData, XContentBuilder builder, ToXContent.Params params) throws IOException {
builder.startObject(aliasMetaData.alias(), XContentBuilder.FieldCaseConversion.NONE);
boolean binary = params.paramAsBoolean("binary", false);
if (aliasMetaData.filter() != null) {
if (binary) {
builder.field("filter", aliasMetaData.filter.compressed());
} else {
byte[] data = aliasMetaData.filter().uncompressed();
XContentParser parser = XContentFactory.xContent(data).createParser(data);
Map filter = parser.mapOrdered();
parser.close();
builder.field("filter", filter);
}
}
if (aliasMetaData.indexRouting() != null) {
builder.field("index_routing", aliasMetaData.indexRouting());
}
if (aliasMetaData.searchRouting() != null) {
builder.field("search_routing", aliasMetaData.searchRouting());
}
builder.endObject();
}
public static AliasMetaData fromXContent(XContentParser parser) throws IOException {
Builder builder = new Builder(parser.currentName());
String currentFieldName = null;
XContentParser.Token token = parser.nextToken();
if (token == null) {
// no data...
return builder.build();
}
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
if ("filter".equals(currentFieldName)) {
Map filter = parser.mapOrdered();
builder.filter(filter);
}
} else if (token == XContentParser.Token.VALUE_EMBEDDED_OBJECT) {
if ("filter".equals(currentFieldName)) {
builder.filter(new CompressedXContent(parser.binaryValue()));
}
} else if (token == XContentParser.Token.VALUE_STRING) {
if ("routing".equals(currentFieldName)) {
builder.routing(parser.text());
} else if ("index_routing".equals(currentFieldName) || "indexRouting".equals(currentFieldName)) {
builder.indexRouting(parser.text());
} else if ("search_routing".equals(currentFieldName) || "searchRouting".equals(currentFieldName)) {
builder.searchRouting(parser.text());
}
}
}
return builder.build();
}
public void writeTo(AliasMetaData aliasMetaData, StreamOutput out) throws IOException {
aliasMetaData.writeTo(out);
}
public static AliasMetaData readFrom(StreamInput in) throws IOException {
return PROTO.readFrom(in);
}
}
}
