Example usage for org.springframework.web.client HttpClientErrorException getCause

Introduction

In this page you can find the example usage for org.springframework.web.client HttpClientErrorException getCause.

Prototype

public synchronized Throwable getCause() 

Source Link

Document

Returns the cause of this throwable or null if the cause is nonexistent or unknown.

Usage

From source file:org.apache.zeppelin.livy.BaseLivyInterpreter.java

private String callRestAPI(String targetURL, String method, String jsonData) throws LivyException {
    targetURL = livyURL + targetURL;//ww  w  .  j a va 2s  . c om
    LOGGER.debug("Call rest api in {}, method: {}, jsonData: {}", targetURL, method, jsonData);
    HttpHeaders headers = new HttpHeaders();
    headers.add("Content-Type", MediaType.APPLICATION_JSON_UTF8_VALUE);
    headers.add("X-Requested-By", "zeppelin");
    for (Map.Entry<String, String> entry : customHeaders.entrySet()) {
        headers.add(entry.getKey(), entry.getValue());
    }
    ResponseEntity<String> response = null;
    try {
        if (method.equals("POST")) {
            HttpEntity<String> entity = new HttpEntity<>(jsonData, headers);
            response = restTemplate.exchange(targetURL, HttpMethod.POST, entity, String.class);
        } else if (method.equals("GET")) {
            HttpEntity<String> entity = new HttpEntity<>(headers);
            response = restTemplate.exchange(targetURL, HttpMethod.GET, entity, String.class);
        } else if (method.equals("DELETE")) {
            HttpEntity<String> entity = new HttpEntity<>(headers);
            response = restTemplate.exchange(targetURL, HttpMethod.DELETE, entity, String.class);
        }
    } catch (HttpClientErrorException e) {
        response = new ResponseEntity(e.getResponseBodyAsString(), e.getStatusCode());
        LOGGER.error(String.format("Error with %s StatusCode: %s", response.getStatusCode().value(),
                e.getResponseBodyAsString()));
    } catch (RestClientException e) {
        // Exception happens when kerberos is enabled.
        if (e.getCause() instanceof HttpClientErrorException) {
            HttpClientErrorException cause = (HttpClientErrorException) e.getCause();
            if (cause.getResponseBodyAsString().matches(SESSION_NOT_FOUND_PATTERN)) {
                throw new SessionNotFoundException(cause.getResponseBodyAsString());
            }
            throw new LivyException(cause.getResponseBodyAsString() + "\n"
                    + ExceptionUtils.getFullStackTrace(ExceptionUtils.getRootCause(e)));
        }
        if (e instanceof HttpServerErrorException) {
            HttpServerErrorException errorException = (HttpServerErrorException) e;
            String errorResponse = errorException.getResponseBodyAsString();
            if (errorResponse.contains("Session is in state dead")) {
                throw new SessionDeadException();
            }
            throw new LivyException(errorResponse, e);
        }
        throw new LivyException(e);
    }
    if (response == null) {
        throw new LivyException("No http response returned");
    }
    LOGGER.debug("Get response, StatusCode: {}, responseBody: {}", response.getStatusCode(),
            response.getBody());
    if (response.getStatusCode().value() == 200 || response.getStatusCode().value() == 201) {
        return response.getBody();
    } else if (response.getStatusCode().value() == 404) {
        if (response.getBody().matches(SESSION_NOT_FOUND_PATTERN)) {
            throw new SessionNotFoundException(response.getBody());
        } else {
            throw new APINotFoundException(
                    "No rest api found for " + targetURL + ", " + response.getStatusCode());
        }
    } else {
        String responseString = response.getBody();
        if (responseString.contains("CreateInteractiveRequest[\\\"master\\\"]")) {
            return responseString;
        }
        throw new LivyException(String.format("Error with %s StatusCode: %s", response.getStatusCode().value(),
                responseString));
    }
}

---