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/*
* Copyright 2014-2015 Open Networking Laboratory
*
* Licensed 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.onosproject.codec.impl;
import java.util.stream.IntStream;
import org.onosproject.codec.CodecContext;
import org.onosproject.codec.JsonCodec;
import org.onosproject.net.flow.DefaultTrafficSelector;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.criteria.Criterion;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Traffic selector codec.
*/
public final class TrafficSelectorCodec extends JsonCodec<TrafficSelector> {
private static final String CRITERIA = "criteria";
@Override
public ObjectNode encode(TrafficSelector selector, CodecContext context) {
checkNotNull(selector, "Traffic selector cannot be null");
final ObjectNode result = context.mapper().createObjectNode();
final ArrayNode jsonCriteria = result.putArray(CRITERIA);
if (selector.criteria() != null) {
final JsonCodec<Criterion> criterionCodec =
context.codec(Criterion.class);
for (final Criterion criterion : selector.criteria()) {
jsonCriteria.add(criterionCodec.encode(criterion, context));
}
}
return result;
}
@Override
public TrafficSelector decode(ObjectNode json, CodecContext context) {
final JsonCodec<Criterion> criterionCodec =
context.codec(Criterion.class);
JsonNode criteriaJson = json.get(CRITERIA);
TrafficSelector.Builder builder = DefaultTrafficSelector.builder();
if (criteriaJson != null) {
IntStream.range(0, criteriaJson.size())
.forEach(i -> builder.add(
criterionCodec.decode(get(criteriaJson, i),
context)));
}
return builder.build();
}
}
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