package com.dottydingo.hyperion.service.marshall;
import com.dottydingo.hyperion.exception.BadRequestException;
import com.dottydingo.hyperion.exception.InternalException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.InputStream;
import java.io.OutputStream;
/**
*/
public class EndpointMarshaller
{
private ObjectMapper objectMapper;
public EndpointMarshaller()
{
try
{
objectMapper = new ObjectMapperBuilder().getObject();
}
catch (Exception ignore){}
}
public void setObjectMapper(ObjectMapper objectMapper)
{
this.objectMapper = objectMapper;
}
public <T> T unmarshall(InputStream inputStream, Class<T> type)
{
try
{
return objectMapper.readValue(inputStream,type);
}
catch (Exception e)
{
throw new BadRequestException(String.format("Error unmarshalling request: %s",e.getMessage()),e);
}
}
public <T> RequestContext<T> unmarshallWithContext(InputStream inputStream, Class<T> type)
{
try
{
JsonNode jsonNode = objectMapper.readTree(inputStream);
T value = objectMapper.convertValue(jsonNode,type);
return new RequestContext<T>(value,jsonNode.fieldNames());
}
catch (Exception e)
{
throw new BadRequestException(String.format("Error unmarshalling request: %s",e.getMessage()),e);
}
}
public <T> void marshall(OutputStream outputStream, T value)
{
try
{
objectMapper.writeValue(outputStream,value);
}
catch(Exception e)
{
throw new InternalException("Error marhsalling response.",e);
}
}
}