at.ac.tuwien.dsg.cloud.utilities.gateway.registry.RestUtilities.java Source code

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Here is the source code for at.ac.tuwien.dsg.cloud.utilities.gateway.registry.RestUtilities.java

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package at.ac.tuwien.dsg.cloud.utilities.gateway.registry;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.RequestEntity;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Component;
import org.springframework.web.client.HttpStatusCodeException;
import org.springframework.web.client.RestTemplate;

/**
 *
 * @author Svetoslav Videnov <s.videnov@dsg.tuwien.ac.at>
 */
@Component
public class RestUtilities {
    private static Logger logger = LoggerFactory.getLogger(RestUtilities.class);

    public <T> ResponseEntity<T> simpleRestExchange(RequestEntity reg, Class<T> respType) {
        HttpStatus failedCode;
        try {
            RestTemplate restTemplate = new RestTemplate();
            return restTemplate.exchange(reg, respType);
        } catch (HttpStatusCodeException e) {
            String serverResp = e.getResponseBodyAsString();
            failedCode = e.getStatusCode();
            logger.error(String.format(
                    "Exception from server! " + "With status code %s! " + "Following body was responded %s",
                    failedCode.toString(), serverResp), e);
        }

        //todo: think of throwing an exception instead of returning a null object
        return new ResponseEntity(null, failedCode);
    }
}