| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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.apache.curator.x.discovery.server.entity; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import org.apache.curator.utils.ThreadUtils; |
| import org.apache.curator.x.discovery.ServiceInstance; |
| import org.apache.curator.x.discovery.ServiceInstanceBuilder; |
| import org.apache.curator.x.discovery.ServiceType; |
| import org.apache.curator.x.discovery.server.rest.DiscoveryContext; |
| import javax.ws.rs.Consumes; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.WebApplicationException; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.MultivaluedMap; |
| import javax.ws.rs.ext.MessageBodyReader; |
| import javax.ws.rs.ext.MessageBodyWriter; |
| import javax.ws.rs.ext.Provider; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Type; |
| |
| /** |
| * Message body reader/writer. Inject this as appropriate for the JAX-RS implementation you are using |
| */ |
| @Provider |
| @Consumes(MediaType.APPLICATION_JSON) |
| @Produces(MediaType.APPLICATION_JSON) |
| public class JsonServiceInstanceMarshaller<T> implements MessageBodyReader<ServiceInstance<T>>, MessageBodyWriter<ServiceInstance<T>> |
| { |
| private final static ObjectMapper mapper = new ObjectMapper(); |
| |
| private final DiscoveryContext<T> context; |
| |
| public JsonServiceInstanceMarshaller(DiscoveryContext<T> context) |
| { |
| this.context = context; |
| } |
| |
| static<T> ServiceInstance<T> readInstance(JsonNode node, DiscoveryContext<T> context) throws Exception |
| { |
| ServiceInstanceBuilder<T> builder = ServiceInstance.builder(); |
| |
| builder.name(node.get("name").asText()); |
| builder.id(node.get("id").asText()); |
| builder.address(node.get("address").asText()); |
| builder.registrationTimeUTC(node.get("registrationTimeUTC").asLong()); |
| builder.serviceType(ServiceType.valueOf(node.get("serviceType").asText())); |
| builder.payload(context.unMarshallJson(node.get("payload"))); |
| |
| Integer port = getInteger(node, "port"); |
| Integer sslPort = getInteger(node, "sslPort"); |
| if ( port != null ) |
| { |
| builder.port(port); |
| } |
| if ( sslPort != null ) |
| { |
| builder.sslPort(sslPort); |
| } |
| |
| return builder.build(); |
| } |
| |
| static<T> ObjectNode writeInstance(ObjectMapper mapper, ServiceInstance<T> instance, DiscoveryContext<T> context) |
| { |
| ObjectNode node = mapper.createObjectNode(); |
| node.put("name", instance.getName()); |
| node.put("id", instance.getId()); |
| node.put("address", instance.getAddress()); |
| putInteger(node, "port", instance.getPort()); |
| putInteger(node, "sslPort", instance.getSslPort()); |
| node.put("registrationTimeUTC", instance.getRegistrationTimeUTC()); |
| node.put("serviceType", instance.getServiceType().name()); |
| try |
| { |
| context.marshallJson(node, "payload", instance.getPayload()); |
| } |
| catch ( Exception e ) |
| { |
| ThreadUtils.checkInterrupted(e); |
| throw new WebApplicationException(e); |
| } |
| |
| return node; |
| } |
| |
| private static Integer getInteger(JsonNode node, String fieldName) |
| { |
| JsonNode intNode = node.get(fieldName); |
| return (intNode != null) ? intNode.asInt() : null; |
| } |
| |
| private static void putInteger(ObjectNode node, String fieldName, Integer value) |
| { |
| if ( value != null ) |
| { |
| node.put(fieldName, value); |
| } |
| } |
| |
| @Override |
| public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) |
| { |
| return isWriteable(type, genericType, annotations, mediaType); |
| } |
| |
| @Override |
| public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) |
| { |
| return ServiceInstance.class.isAssignableFrom(type) && mediaType.equals(MediaType.APPLICATION_JSON_TYPE); |
| } |
| |
| @Override |
| public long getSize(ServiceInstance<T> serviceInstance, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) |
| { |
| return -1; |
| } |
| |
| @Override |
| public ServiceInstance<T> readFrom(Class<ServiceInstance<T>> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException |
| { |
| try |
| { |
| JsonNode node = mapper.readTree(entityStream); |
| return readInstance(node, context); |
| } |
| catch ( Exception e ) |
| { |
| ThreadUtils.checkInterrupted(e); |
| throw new WebApplicationException(e); |
| } |
| } |
| |
| @Override |
| public void writeTo(ServiceInstance<T> serviceInstance, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException |
| { |
| ObjectNode node = writeInstance(mapper, serviceInstance, context); |
| mapper.writeValue(entityStream, node); |
| } |
| } |