core/common/src/main/java/org/onosproject/codec/impl/AnnotationsCodec.java

/*
 * Copyright 2015-present Open Networking Foundation
 *
 * 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.DefaultAnnotations;
import org.onosproject.net.DefaultAnnotations.Builder;

import java.util.Set;
import java.util.TreeSet;

/**
 * Annotations JSON codec.
 */
public final class AnnotationsCodec extends JsonCodec<Annotations> {

    @Override
    public ObjectNode encode(Annotations annotations, CodecContext context) {
        ObjectNode result = context.mapper().createObjectNode();
        Set<String> keys = new TreeSet<>(annotations.keys());
        for (String key : keys) {
            result.put(key, annotations.value(key));
        }
        return result;
    }

    @Override
    public Annotations decode(ObjectNode json, CodecContext context) {
        Builder builder = DefaultAnnotations.builder();

        json.fields().forEachRemaining(e ->
            builder.set(e.getKey(), e.getValue().asText()));

        return builder.build();
    }
}