/*
* 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.search.profile.query;
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.ToXContentObject;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.search.profile.ProfileResult;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import static org.elasticsearch.common.xcontent.XContentParserUtils.ensureExpectedToken;
import static org.elasticsearch.common.xcontent.XContentParserUtils.throwUnknownField;
import static org.elasticsearch.common.xcontent.XContentParserUtils.throwUnknownToken;
/**
* A container class to hold the profile results for a single shard in the request.
* Contains a list of query profiles, a collector tree and a total rewrite tree.
*/
public final class QueryProfileShardResult implements Writeable, ToXContentObject {
public static final String COLLECTOR = "collector";
public static final String REWRITE_TIME = "rewrite_time";
public static final String QUERY_ARRAY = "query";
private final List<ProfileResult> queryProfileResults;
private final CollectorResult profileCollector;
private final long rewriteTime;
public QueryProfileShardResult(List<ProfileResult> queryProfileResults, long rewriteTime,
CollectorResult profileCollector) {
assert(profileCollector != null);
this.queryProfileResults = queryProfileResults;
this.profileCollector = profileCollector;
this.rewriteTime = rewriteTime;
}
/**
* Read from a stream.
*/
public QueryProfileShardResult(StreamInput in) throws IOException {
int profileSize = in.readVInt();
queryProfileResults = new ArrayList<>(profileSize);
for (int j = 0; j < profileSize; j++) {
queryProfileResults.add(new ProfileResult(in));
}
profileCollector = new CollectorResult(in);
rewriteTime = in.readLong();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVInt(queryProfileResults.size());
for (ProfileResult p : queryProfileResults) {
p.writeTo(out);
}
profileCollector.writeTo(out);
out.writeLong(rewriteTime);
}
public List<ProfileResult> getQueryResults() {
return Collections.unmodifiableList(queryProfileResults);
}
public long getRewriteTime() {
return rewriteTime;
}
public CollectorResult getCollectorResult() {
return profileCollector;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
builder.startArray(QUERY_ARRAY);
for (ProfileResult p : queryProfileResults) {
p.toXContent(builder, params);
}
builder.endArray();
builder.field(REWRITE_TIME, rewriteTime);
builder.startArray(COLLECTOR);
profileCollector.toXContent(builder, params);
builder.endArray();
builder.endObject();
return builder;
}
public static QueryProfileShardResult fromXContent(XContentParser parser) throws IOException {
XContentParser.Token token = parser.currentToken();
ensureExpectedToken(XContentParser.Token.START_OBJECT, token, parser::getTokenLocation);
String currentFieldName = null;
List<ProfileResult> queryProfileResults = new ArrayList<>();
long rewriteTime = 0;
CollectorResult collector = null;
while((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token.isValue()) {
if (REWRITE_TIME.equals(currentFieldName)) {
rewriteTime = parser.longValue();
} else {
throwUnknownField(currentFieldName, parser.getTokenLocation());
}
} else if (token == XContentParser.Token.START_ARRAY) {
if (QUERY_ARRAY.equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
queryProfileResults.add(ProfileResult.fromXContent(parser));
}
} else if (COLLECTOR.equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
collector = CollectorResult.fromXContent(parser);
}
} else {
throwUnknownField(currentFieldName, parser.getTokenLocation());
}
} else {
throwUnknownToken(token, parser.getTokenLocation());
}
}
return new QueryProfileShardResult(queryProfileResults, rewriteTime, collector);
}
}