Examples with FhirClientConnectionException ca.uhn.fhir.rest.client.exceptions.FhirClientConnectionException used on opensource projects

Example 1 with FhirClientConnectionException

use of ca.uhn.fhir.rest.client.exceptions.FhirClientConnectionException in project quality-measure-and-cohort-service by Alvearie.

the class CohortServiceExceptionMapper method createServiceErrorsForExceptions.

private void createServiceErrorsForExceptions(Throwable ex, int code, List<ServiceError> errorsList) {
    Throwable cause = ex.getCause();
    int causeCount = 0;
    // number of them through the UI, the full stack will get logged if needed in calling method
    while (cause != null && causeCount < MAX_EXCEPTION_CAUSE_DEPTH) {
        int statusCode = code;
        if (cause.getLocalizedMessage() != null && !cause.getLocalizedMessage().trim().isEmpty()) {
            // so look for specific exception types and map them to more description http status codes for the errors
            if (ex instanceof FhirClientConnectionException) {
                FhirClientConnectionException fcce = (FhirClientConnectionException) ex;
                int serviceErrorCode = fcce.getStatusCode();
                if (serviceErrorCode == 0 || serviceErrorCode == 500) {
                    if ((cause instanceof java.net.ConnectException && cause.getMessage().toLowerCase().contains("connection refused")) || cause instanceof java.net.UnknownHostException || cause instanceof org.apache.http.conn.HttpHostConnectException) {
                        statusCode = Status.NOT_FOUND.getStatusCode();
                    } else if ((cause instanceof java.net.SocketTimeoutException || cause instanceof org.apache.http.conn.ConnectTimeoutException) && cause.getMessage().toLowerCase().contains("timed out")) {
                        statusCode = Status.GATEWAY_TIMEOUT.getStatusCode();
                    }
                }
            }
            ServiceError error = new ServiceError(statusCode, cause.getLocalizedMessage());
            errorsList.add(error);
        }
        cause = cause.getCause();
        causeCount++;
    }
}

Example 2 with FhirClientConnectionException

use of ca.uhn.fhir.rest.client.exceptions.FhirClientConnectionException in project quality-measure-and-cohort-service by Alvearie.

the class CohortServiceExceptionMapper method toServiceErrorList.

public ServiceErrorList toServiceErrorList(Throwable ex) {
    List<ServiceError> errorsList = new ArrayList<>();
    // The IBM Cloud API Handbook mandates that REST errors be returned using
    // an error container model class (ServiceErrorList) which in turn contains
    // a list of error objects (ServiceError) which contains specific error fields
    // serviceErrorList contains the status request (ie 400, 500 etc.) for our service
    // and the status code for underlying services is captured in the serviceError objects
    // within the list
    ServiceErrorList serviceErrorList = new ServiceErrorList().errors(errorsList);
    ServiceError se;
    String description = "";
    String reason = "";
    int serviceErrorCode = 500;
    int serviceErrorListCode = 500;
    ErrorSource errorSource;
    try {
        if (ex instanceof FhirClientConnectionException) {
            FhirClientConnectionException fcce = (FhirClientConnectionException) ex;
            serviceErrorCode = fcce.getStatusCode();
            // if something more specific is not returned
            if (serviceErrorCode == 0) {
                serviceErrorCode = Status.BAD_REQUEST.getStatusCode();
            }
            serviceErrorListCode = serviceErrorCode;
            Status status = Status.fromStatusCode(serviceErrorCode);
            reason = fcce.getLocalizedMessage();
            if (reason == null || reason.trim().isEmpty()) {
                reason = status.getReasonPhrase();
            }
            description = "Reason: FhirClientConnectionException";
            errorSource = ErrorSource.COHORT_SERVICE;
        } else // The 401 error code information is captured in the ServiceError object
        if (ex instanceof AuthenticationException) {
            AuthenticationException ae = (AuthenticationException) ex;
            serviceErrorListCode = Status.BAD_REQUEST.getStatusCode();
            serviceErrorCode = ae.getStatusCode();
            description = "Could not authenticate with FHIR server.";
            errorSource = ErrorSource.FHIR_SERVER;
        } else if (ex instanceof ResourceNotFoundException) {
            ResourceNotFoundException rnfe = (ResourceNotFoundException) ex;
            serviceErrorListCode = Status.BAD_REQUEST.getStatusCode();
            serviceErrorCode = rnfe.getStatusCode();
            reason = "FHIR Resource Not Found: " + rnfe.getLocalizedMessage();
            description = rnfe.getResponseBody();
            errorSource = ErrorSource.FHIR_SERVER;
        } else // library ids don't resolve properly
        if (ex instanceof IllegalArgumentException || ex instanceof UnsupportedOperationException) {
            serviceErrorCode = Status.BAD_REQUEST.getStatusCode();
            serviceErrorListCode = serviceErrorCode;
            errorSource = ErrorSource.COHORT_SERVICE;
        } else // will get thrown by the CQL engine generally due to language-related issues
        if (ex instanceof CqlException) {
            serviceErrorCode = Status.BAD_REQUEST.getStatusCode();
            serviceErrorListCode = serviceErrorCode;
            errorSource = ErrorSource.COHORT_SERVICE;
        } else // parsing errors.
        if (ex instanceof MismatchedInputException) {
            serviceErrorCode = Status.BAD_REQUEST.getStatusCode();
            serviceErrorListCode = serviceErrorCode;
            errorSource = ErrorSource.COHORT_SERVICE;
        } else if (ex instanceof JsonParseException) {
            serviceErrorCode = Status.BAD_REQUEST.getStatusCode();
            serviceErrorListCode = serviceErrorCode;
            description = "Invalid JSON input";
            errorSource = ErrorSource.COHORT_SERVICE;
        } else // will get thrown by HAPI FHIR when a requested resource is not found in the target FHIR server
        if (ex instanceof BaseServerResponseException) {
            serviceErrorCode = ((BaseServerResponseException) ex).getStatusCode();
            serviceErrorListCode = serviceErrorCode;
            BaseServerResponseException sre = (BaseServerResponseException) ex;
            reason = "Exception while communicating with FHIR";
            errorSource = ErrorSource.FHIR_SERVER;
            if (sre.getResponseBody() != null) {
                description = sre.getResponseBody();
            } else {
                // Some errors do not have a response body
                description = sre.getLocalizedMessage();
            }
        } else // catch everything else and return a 500
        {
            serviceErrorCode = Status.INTERNAL_SERVER_ERROR.getStatusCode();
            serviceErrorListCode = serviceErrorCode;
            description = ex.getMessage();
            errorSource = ErrorSource.COHORT_SERVICE;
        }
        if (reason.isEmpty()) {
            reason = ex.getLocalizedMessage();
        }
        se = new ServiceError(serviceErrorCode, reason);
        se.setDescription(description);
        errorsList.add(se);
        // loop through the exception chain logging the cause of each one
        // since these can contain valuable information about the root problems
        createServiceErrorsForExceptions(ex, serviceErrorCode, errorsList);
        serviceErrorList = serviceErrorList.statusCode(serviceErrorListCode).errorSource(errorSource);
        logger.error("HTTP Status: " + serviceErrorList.getStatusCode(), ex);
    } catch (Throwable nestedEx) {
        // This should not really occur unless there is a bug in this code.
        // Build a 500 ServiceError with some detail
        se = new ServiceError(Status.INTERNAL_SERVER_ERROR.getStatusCode(), nestedEx.getLocalizedMessage());
        se.setDescription("Reason: Uncaught nested exception");
        logger.error("HTTP Status: " + se.getCode() + ", Nested Exception", nestedEx);
        logger.error("Original Exception", ex);
        serviceErrorList = serviceErrorList.statusCode(se.getCode()).errorSource(ErrorSource.COHORT_SERVICE);
        errorsList.add(se);
    }
    return serviceErrorList;
}

Example 3 with FhirClientConnectionException

use of ca.uhn.fhir.rest.client.exceptions.FhirClientConnectionException in project quality-measure-and-cohort-service by Alvearie.

the class CohortServiceExceptionMapperTest method testToResponseFhirClientConnectionExceptionUnknownHostTimedOut.

@Test
public void testToResponseFhirClientConnectionExceptionUnknownHostTimedOut() throws Exception {
    Response response = exMapper.toResponse(new FhirClientConnectionException("Something bad got input").initCause(new java.net.SocketTimeoutException("timed out")));
    ServiceErrorList actual = (ServiceErrorList) response.getEntity();
    ServiceErrorList expected = new ServiceErrorList();
    expected.setStatusCode(500);
    expected.getErrors().add(newServiceError(500, "Something bad got input", "Reason: FhirClientConnectionException"));
    expected.getErrors().add(newServiceError(504, "timed out", null));
    expected.setErrorSource(ErrorSource.COHORT_SERVICE);
    testErrorListEquality(expected, actual);
}

Example 4 with FhirClientConnectionException

use of ca.uhn.fhir.rest.client.exceptions.FhirClientConnectionException in project quality-measure-and-cohort-service by Alvearie.

the class CohortServiceExceptionMapperTest method testToResponseFhirClientConnectionExceptionUnknownHttpHostConnect.

@Test
public void testToResponseFhirClientConnectionExceptionUnknownHttpHostConnect() throws Exception {
    Response response = exMapper.toResponse(new FhirClientConnectionException("Something bad got input").initCause(new org.apache.http.conn.HttpHostConnectException(org.apache.http.HttpHost.create("host"), new ConnectException("cause"))));
    ServiceErrorList actual = (ServiceErrorList) response.getEntity();
    ServiceErrorList expected = new ServiceErrorList();
    expected.setStatusCode(500);
    expected.getErrors().add(newServiceError(500, "Something bad got input", "Reason: FhirClientConnectionException"));
    expected.getErrors().add(newServiceError(404, "Connect to host failed: cause", null));
    expected.getErrors().add(newServiceError(500, "cause", null));
    expected.setErrorSource(ErrorSource.COHORT_SERVICE);
    testErrorListEquality(expected, actual);
}

Example 5 with FhirClientConnectionException

use of ca.uhn.fhir.rest.client.exceptions.FhirClientConnectionException in project quality-measure-and-cohort-service by Alvearie.

the class CohortServiceExceptionMapperTest method testToResponseFhirClientConnectionExceptionUnknownHostApacheTimedOut.

@Test
public void testToResponseFhirClientConnectionExceptionUnknownHostApacheTimedOut() throws Exception {
    Response response = exMapper.toResponse(new FhirClientConnectionException("Something bad got input").initCause(new org.apache.http.conn.ConnectTimeoutException("timed out")));
    ServiceErrorList actual = (ServiceErrorList) response.getEntity();
    ServiceErrorList expected = new ServiceErrorList();
    expected.setStatusCode(500);
    expected.getErrors().add(newServiceError(500, "Something bad got input", "Reason: FhirClientConnectionException"));
    expected.getErrors().add(newServiceError(504, "timed out", null));
    expected.setErrorSource(ErrorSource.COHORT_SERVICE);
    testErrorListEquality(expected, actual);
}