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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.search.profile;
import org.elasticsearch.common.ParseField;
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.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
/**
* Public interface and serialization container for profiled timings of the
* Collectors used in the search. Children CollectorResult's may be
* embedded inside of a parent CollectorResult
*/
public class CollectorResult implements ToXContent, Writeable {
public static final String REASON_SEARCH_COUNT = "search_count";
public static final String REASON_SEARCH_TOP_HITS = "search_top_hits";
public static final String REASON_SEARCH_TERMINATE_AFTER_COUNT = "search_terminate_after_count";
public static final String REASON_SEARCH_POST_FILTER = "search_post_filter";
public static final String REASON_SEARCH_MIN_SCORE = "search_min_score";
public static final String REASON_SEARCH_MULTI = "search_multi";
public static final String REASON_SEARCH_TIMEOUT = "search_timeout";
public static final String REASON_AGGREGATION = "aggregation";
public static final String REASON_AGGREGATION_GLOBAL = "aggregation_global";
private static final ParseField NAME = new ParseField("name");
private static final ParseField REASON = new ParseField("reason");
private static final ParseField TIME = new ParseField("time");
private static final ParseField CHILDREN = new ParseField("children");
/**
* A more friendly representation of the Collector's class name
*/
private final String collectorName;
/**
* A "hint" to help provide some context about this Collector
*/
private final String reason;
/**
* The total elapsed time for this Collector
*/
private final Long time;
/**
* A list of children collectors "embedded" inside this collector
*/
private List<CollectorResult> children;
public CollectorResult(String collectorName, String reason, Long time, List<CollectorResult> children) {
this.collectorName = collectorName;
this.reason = reason;
this.time = time;
this.children = children;
}
public CollectorResult(StreamInput in) throws IOException {
this.collectorName = in.readString();
this.reason = in.readString();
this.time = in.readLong();
int size = in.readVInt();
this.children = new ArrayList<>(size);
for (int i = 0; i < size; i++) {
CollectorResult child = new CollectorResult(in);
this.children.add(child);
}
}
/**
* @return the profiled time for this collector (inclusive of children)
*/
public long getTime() {
return this.time;
}
/**
* @return a human readable "hint" about what this collector was used for
*/
public String getReason() {
return this.reason;
}
/**
* @return the lucene class name of the collector
*/
public String getName() {
return this.collectorName;
}
/**
* @return a list of children collectors
*/
public List<CollectorResult> getProfiledChildren() {
return children;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, ToXContent.Params params) throws IOException {
builder = builder.startObject()
.field(NAME.getPreferredName(), getName())
.field(REASON.getPreferredName(), getReason())
.field(TIME.getPreferredName(), String.format(Locale.US, "%.10gms", (double) (getTime() / 1000000.0)));
if (!children.isEmpty()) {
builder = builder.startArray(CHILDREN.getPreferredName());
for (CollectorResult child : children) {
builder = child.toXContent(builder, params);
}
builder = builder.endArray();
}
builder = builder.endObject();
return builder;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(collectorName);
out.writeString(reason);
out.writeLong(time);
out.writeVInt(children.size());
for (CollectorResult child : children) {
child.writeTo(out);
}
}
@Override
public Object readFrom(StreamInput in) throws IOException {
return new CollectorResult(in);
}
}
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