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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.aggregations.bucket.range.ip;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.ParseFieldMatcher;
import org.elasticsearch.common.ParsingException;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentParser.Token;
import org.elasticsearch.search.aggregations.support.AbstractValuesSourceParser.BytesValuesSourceParser;
import org.elasticsearch.search.aggregations.bucket.range.RangeAggregator;
import org.elasticsearch.search.aggregations.bucket.range.ip.IpRangeAggregationBuilder.Range;
import org.elasticsearch.search.aggregations.support.XContentParseContext;
import org.elasticsearch.search.aggregations.support.ValueType;
import org.elasticsearch.search.aggregations.support.ValuesSource;
import org.elasticsearch.search.aggregations.support.ValuesSourceAggregationBuilder;
import org.elasticsearch.search.aggregations.support.ValuesSourceType;
/**
* A parser for ip range aggregations.
*/
public class IpRangeParser extends BytesValuesSourceParser {
private static final ParseField MASK_FIELD = new ParseField("mask");
public IpRangeParser() {
super(false, false);
}
@Override
protected ValuesSourceAggregationBuilder createFactory(
String aggregationName, ValuesSourceType valuesSourceType,
ValueType targetValueType, Map otherOptions) {
IpRangeAggregationBuilder range = new IpRangeAggregationBuilder(aggregationName);
@SuppressWarnings("unchecked")
Iterable ranges = (Iterable) otherOptions.get(RangeAggregator.RANGES_FIELD);
if (otherOptions.containsKey(RangeAggregator.RANGES_FIELD)) {
for (Range r : ranges) {
range.addRange(r);
}
}
if (otherOptions.containsKey(RangeAggregator.KEYED_FIELD)) {
range.keyed((Boolean) otherOptions.get(RangeAggregator.KEYED_FIELD));
}
return range;
}
private Range parseRange(XContentParser parser, ParseFieldMatcher parseFieldMatcher) throws IOException {
String key = null;
String from = null;
String to = null;
String mask = null;
if (parser.currentToken() != Token.START_OBJECT) {
throw new ParsingException(parser.getTokenLocation(), "[ranges] must contain objects, but hit a " + parser.currentToken());
}
while (parser.nextToken() != Token.END_OBJECT) {
if (parser.currentToken() == Token.FIELD_NAME) {
continue;
}
if (parseFieldMatcher.match(parser.currentName(), RangeAggregator.Range.KEY_FIELD)) {
key = parser.text();
} else if (parseFieldMatcher.match(parser.currentName(), RangeAggregator.Range.FROM_FIELD)) {
from = parser.textOrNull();
} else if (parseFieldMatcher.match(parser.currentName(), RangeAggregator.Range.TO_FIELD)) {
to = parser.textOrNull();
} else if (parseFieldMatcher.match(parser.currentName(), MASK_FIELD)) {
mask = parser.text();
} else {
throw new ParsingException(parser.getTokenLocation(), "Unexpected ip range parameter: [" + parser.currentName() + "]");
}
}
if (mask != null) {
if (key == null) {
key = mask;
}
return new Range(key, mask);
} else {
return new Range(key, from, to);
}
}
@Override
protected boolean token(String aggregationName, String currentFieldName,
Token token,
XContentParseContext context,
Map otherOptions) throws IOException {
XContentParser parser = context.getParser();
if (context.matchField(currentFieldName, RangeAggregator.RANGES_FIELD)) {
if (parser.currentToken() != Token.START_ARRAY) {
throw new ParsingException(parser.getTokenLocation(), "[ranges] must be passed as an array, but got a " + token);
}
List ranges = new ArrayList<>();
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
Range range = parseRange(parser, context.getParseFieldMatcher());
ranges.add(range);
}
otherOptions.put(RangeAggregator.RANGES_FIELD, ranges);
return true;
} else if (context.matchField(parser.currentName(), RangeAggregator.KEYED_FIELD)) {
otherOptions.put(RangeAggregator.KEYED_FIELD, parser.booleanValue());
return true;
}
return false;
}
}