package com.emc.vipr.client.impl.jersey;
import com.emc.storageos.model.errorhandling.ServiceErrorRestRep;
import com.emc.vipr.client.exceptions.ServiceErrorException;
import com.emc.vipr.client.exceptions.ViPRHttpException;
import com.sun.jersey.api.client.ClientHandlerException;
import com.sun.jersey.api.client.ClientRequest;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.filter.ClientFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.ws.rs.core.MediaType;
/**
* Jersey filter that throws an Exception if the status code is 4xx or 5xx. Without this, Jersey
* will try to parse the response and you will get a parse exception.
*/
public class ExceptionOnErrorFilter extends ClientFilter {
private Logger log = LoggerFactory.getLogger(getClass());
@Override
public ClientResponse handle(ClientRequest request) throws ClientHandlerException {
ClientResponse response = getNext().handle(request);
int status = response.getStatus();
if (status >= 400 && status < 600) {
if (isSupportedType(response.getType())) {
ServiceErrorRestRep serviceError;
try {
serviceError = response.getEntity(ServiceErrorRestRep.class);
}
catch (Exception e) {
// Cause to fall-through to default exception
log.error("Error parsing error message", e);
serviceError = null;
}
if (serviceError != null) {
logAndThrow(new ServiceErrorException(status, serviceError));
}
}
// Fallback for unknown entity types
String content = response.getEntity(String.class);
logAndThrow(new ViPRHttpException(status, content));
}
return response;
}
private void logAndThrow(RuntimeException e) {
log.error(e.getMessage());
throw e;
}
private boolean isSupportedType(MediaType type) {
return type.isCompatible(MediaType.APPLICATION_JSON_TYPE) ||
type.isCompatible(MediaType.APPLICATION_XML_TYPE) ||
type.isCompatible(MediaType.TEXT_XML_TYPE);
}
}