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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 com.fasterxml.jackson.databind.node.ObjectNode;
import org.onosproject.codec.CodecContext;
import org.onosproject.codec.JsonCodec;
import org.onosproject.net.Annotations;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.DefaultLink;
import org.onosproject.net.Link;
import org.onosproject.net.Link.Type;
import org.onosproject.net.provider.ProviderId;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Link JSON codec.
*/
public final class LinkCodec extends AnnotatedCodec<Link> {
// JSON field names
private static final String SRC = "src";
private static final String DST = "dst";
private static final String TYPE = "type";
private static final String STATE = "state";
@Override
public ObjectNode encode(Link link, CodecContext context) {
checkNotNull(link, "Link cannot be null");
JsonCodec<ConnectPoint> codec = context.codec(ConnectPoint.class);
ObjectNode result = context.mapper().createObjectNode();
result.set(SRC, codec.encode(link.src(), context));
result.set(DST, codec.encode(link.dst(), context));
result.put(TYPE, link.type().toString());
if (link.state() != null) {
result.put(STATE, link.state().toString());
}
return annotate(result, link, context);
}
/**
* {@inheritDoc}
*
* Note: ProviderId is not part of JSON representation.
* Returned object will have random ProviderId set.
*/
@Override
public Link decode(ObjectNode json, CodecContext context) {
if (json == null || !json.isObject()) {
return null;
}
JsonCodec<ConnectPoint> codec = context.codec(ConnectPoint.class);
// TODO: add providerId to JSON if we need to recover them.
ProviderId pid = new ProviderId("json", "LinkCodec");
ConnectPoint src = codec.decode(get(json, SRC), context);
ConnectPoint dst = codec.decode(get(json, DST), context);
Type type = Type.valueOf(json.get(TYPE).asText());
Annotations annotations = extractAnnotations(json, context);
return new DefaultLink(pid, src, dst, type, annotations);
}
}
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