io.gravitee.definition.jackson.datatype.services.core.deser.ServiceDeserializer.java Source code

Introduction

Here is the source code for io.gravitee.definition.jackson.datatype.services.core.deser.ServiceDeserializer.java

Source

/**
 * Copyright (C) 2015 The Gravitee team (http://gravitee.io)
 *
 * 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 io.gravitee.definition.jackson.datatype.services.core.deser;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer;
import io.gravitee.definition.model.Service;
import io.gravitee.definition.model.services.healthcheck.HealthCheck;

import java.io.IOException;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;

/**
 * @author David BRASSELY (david.brassely at graviteesource.com)
 * @author GraviteeSource Team
 */
public class ServiceDeserializer extends StdScalarDeserializer<Service> {

    private final Map<String, Class<? extends Service>> registeredServices = new HashMap<>();
    {
        registeredServices.put(HealthCheck.SERVICE_KEY, HealthCheck.class);
    }

    public ServiceDeserializer(Class<Service> vc) {
        super(vc);
    }

    public ServiceDeserializer() {
        super(Service.class);
    }

    @Override
    public Service deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
        JsonNode node = jp.getCodec().readTree(jp);
        String serviceName = node.fieldNames().next();

        Class<? extends Service> serviceClass = registeredServices.get(serviceName);
        if (serviceClass == null) {
            return null;
        }

        return node.elements().next().traverse(jp.getCodec()).readValueAs(new TypeReference<Service>() {
            @Override
            public Type getType() {
                return serviceClass;
            }
        });
    }
}