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/*******************************************************************************
* Copyright (c) 2017 Politecnico di Torino and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution, and is available at
* http://www.apache.org/licenses/LICENSE-2.0
*******************************************************************************/
package it.polito.escape.verify.deserializer;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.TypeFactory;
import it.polito.escape.verify.exception.BadRequestException;
import it.polito.escape.verify.exception.InternalServerErrorException;
import it.polito.escape.verify.model.Configuration;
import it.polito.escape.verify.model.Neighbour;
import it.polito.escape.verify.model.Node;
public class NodeCustomDeserializer extends JsonDeserializer<Node> {
@Override
public Node deserialize(JsonParser jp, DeserializationContext context) {
try {
JsonNode root = jp.getCodec().readTree(jp);
JsonNode neighboursJson = root.get("neighbours");
JsonNode configurationJson = root.get("configuration");
String nodeName = root.get("name").asText();
String functionalType = root.get("functional_type").asText();
Node node = new Node();
if(root.get("id") != null){
long nodeId = root.get("id").asLong();
node.setId(nodeId);
}
node.setName(nodeName);
node.setFunctional_type(functionalType);
if (configurationJson == null)
node.setConfiguration(new Configuration(node.getName(), "", new ObjectMapper().createArrayNode()));
else {
Configuration conf = node.getConfiguration();
conf.setId(node.getName());
conf.setDescription("");
conf.setConfiguration(configurationJson);
}
try {
List<Neighbour> neighbourList = new ObjectMapper().readValue( neighboursJson.toString(),
TypeFactory .defaultInstance()
.constructCollectionType( List.class,
Neighbour.class));
Map<Long, Neighbour> neighbours = node.getNeighbours();
long numberOfNeighbours = 0;
for (Neighbour neighbour : neighbourList) {
neighbours.put(++numberOfNeighbours, neighbour);
}
return node;
}
catch (JsonParseException e) {
throw new BadRequestException("Invalid content for a node: " + e.getMessage());
}
catch (JsonMappingException e) {
throw new BadRequestException("Invalid input json structure for a node: " + e.getMessage());
}
}
catch (JsonProcessingException e) {
throw new InternalServerErrorException("Error parsing a node: " + e.getMessage());
}
catch (IOException e) {
throw new InternalServerErrorException("I/O error parsing a node: " + e.getMessage());
}
}
}
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