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Elasticsearch Expanded Pack Plugin - Core
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0; you may not use this file except in compliance with the Elastic License
* 2.0.
*/
package org.elasticsearch.xpack.core.transform.transforms;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.cluster.AbstractDiffable;
import org.elasticsearch.common.bytes.BytesReference;
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.LoggingDeprecationHandler;
import org.elasticsearch.common.xcontent.NamedXContentRegistry;
import org.elasticsearch.common.xcontent.ToXContentObject;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.AbstractQueryBuilder;
import org.elasticsearch.index.query.MatchAllQueryBuilder;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.xpack.core.transform.TransformMessages;
import java.io.IOException;
import java.util.Collections;
import java.util.Map;
import java.util.Objects;
public class QueryConfig extends AbstractDiffable implements Writeable, ToXContentObject {
private static final Logger logger = LogManager.getLogger(QueryConfig.class);
// we store the query in 2 formats: the raw format and the parsed format, because:
// - the parsed format adds defaults, which were not part of the original and looks odd on XContent retrieval
// - if parsing fails (e.g. query uses removed functionality), the source can be retrieved
private final Map source;
private final QueryBuilder query;
public static QueryConfig matchAll() {
return new QueryConfig(Collections.singletonMap(MatchAllQueryBuilder.NAME, Collections.emptyMap()),
new MatchAllQueryBuilder());
}
public QueryConfig(final Map source, final QueryBuilder query) {
this.source = Objects.requireNonNull(source);
this.query = query;
}
public QueryConfig(final StreamInput in) throws IOException {
this.source = in.readMap();
this.query = in.readOptionalNamedWriteable(QueryBuilder.class);
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.map(source);
return builder;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeMap(source);
out.writeOptionalNamedWriteable(query);
}
public QueryBuilder getQuery() {
return query;
}
public static QueryConfig fromXContent(final XContentParser parser, boolean lenient) throws IOException {
// we need 2 passes, but the parser can not be cloned, so we parse 1st into a map and then re-parse that for syntax checking
// remember the registry, needed for the 2nd pass
NamedXContentRegistry registry = parser.getXContentRegistry();
Map source = parser.mapOrdered();
QueryBuilder query = null;
try (XContentBuilder xContentBuilder = XContentFactory.jsonBuilder().map(source);
XContentParser sourceParser = XContentType.JSON.xContent().createParser(registry, LoggingDeprecationHandler.INSTANCE,
BytesReference.bytes(xContentBuilder).streamInput())) {
query = AbstractQueryBuilder.parseInnerQueryBuilder(sourceParser);
} catch (Exception e) {
if (lenient) {
logger.warn(TransformMessages.LOG_TRANSFORM_CONFIGURATION_BAD_QUERY, e);
} else {
throw e;
}
}
return new QueryConfig(source, query);
}
@Override
public int hashCode() {
return Objects.hash(source, query);
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (other == null || getClass() != other.getClass()) {
return false;
}
final QueryConfig that = (QueryConfig) other;
return Objects.equals(this.source, that.source) && Objects.equals(this.query, that.query);
}
public boolean isValid() {
return this.query != null;
}
}