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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.ipv4;
import org.elasticsearch.common.network.Cidrs;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.search.SearchParseException;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.bucket.range.RangeAggregator;
import org.elasticsearch.search.aggregations.support.ValueType;
import org.elasticsearch.search.aggregations.support.ValuesSource;
import org.elasticsearch.search.aggregations.support.ValuesSourceParser;
import org.elasticsearch.search.internal.SearchContext;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
*
*/
public class IpRangeParser implements Aggregator.Parser {
@Override
public String type() {
return InternalIPv4Range.TYPE.name();
}
@Override
public AggregatorFactory parse(String aggregationName, XContentParser parser, SearchContext context) throws IOException {
ValuesSourceParser<ValuesSource.Numeric> vsParser = ValuesSourceParser.numeric(aggregationName, InternalIPv4Range.TYPE, context)
.targetValueType(ValueType.IP)
.formattable(false)
.build();
List<RangeAggregator.Range> ranges = null;
boolean keyed = false;
XContentParser.Token token;
String currentFieldName = null;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (vsParser.token(currentFieldName, token, parser)) {
continue;
} else if (token == XContentParser.Token.START_ARRAY) {
if ("ranges".equals(currentFieldName)) {
ranges = new ArrayList<>();
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
double from = Double.NEGATIVE_INFINITY;
String fromAsStr = null;
double to = Double.POSITIVE_INFINITY;
String toAsStr = null;
String key = null;
String mask = null;
String toOrFromOrMaskOrKey = null;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
toOrFromOrMaskOrKey = parser.currentName();
} else if (token == XContentParser.Token.VALUE_NUMBER) {
if ("from".equals(toOrFromOrMaskOrKey)) {
from = parser.doubleValue();
} else if ("to".equals(toOrFromOrMaskOrKey)) {
to = parser.doubleValue();
}
} else if (token == XContentParser.Token.VALUE_STRING) {
if ("from".equals(toOrFromOrMaskOrKey)) {
fromAsStr = parser.text();
} else if ("to".equals(toOrFromOrMaskOrKey)) {
toAsStr = parser.text();
} else if ("key".equals(toOrFromOrMaskOrKey)) {
key = parser.text();
} else if ("mask".equals(toOrFromOrMaskOrKey)) {
mask = parser.text();
}
}
}
RangeAggregator.Range range = new RangeAggregator.Range(key, from, fromAsStr, to, toAsStr);
if (mask != null) {
parseMaskRange(mask, range, aggregationName, context);
}
ranges.add(range);
}
} else {
throw new SearchParseException(context, "Unknown key for a " + token + " in [" + aggregationName + "]: ["
+ currentFieldName + "].", parser.getTokenLocation());
}
} else if (token == XContentParser.Token.VALUE_BOOLEAN) {
if ("keyed".equals(currentFieldName)) {
keyed = parser.booleanValue();
} else {
throw new SearchParseException(context, "Unknown key for a " + token + " in [" + aggregationName + "]: ["
+ currentFieldName + "].", parser.getTokenLocation());
}
} else {
throw new SearchParseException(context, "Unexpected token " + token + " in [" + aggregationName + "].",
parser.getTokenLocation());
}
}
if (ranges == null) {
throw new SearchParseException(context, "Missing [ranges] in ranges aggregator [" + aggregationName + "]",
parser.getTokenLocation());
}
return new RangeAggregator.Factory(aggregationName, vsParser.config(), InternalIPv4Range.FACTORY, ranges, keyed);
}
private static void parseMaskRange(String cidr, RangeAggregator.Range range, String aggregationName, SearchContext ctx) {
long[] fromTo;
try {
fromTo = Cidrs.cidrMaskToMinMax(cidr);
} catch (IllegalArgumentException e) {
throw new SearchParseException(ctx, "invalid CIDR mask [" + cidr + "] in aggregation [" + aggregationName + "]",
null, e);
}
range.from = fromTo[0] == 0 ? Double.NEGATIVE_INFINITY : fromTo[0];
range.to = fromTo[1] == InternalIPv4Range.MAX_IP ? Double.POSITIVE_INFINITY : fromTo[1];
if (range.key == null) {
range.key = cidr;
}
}
}
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