Java Code Examples for com.linecorp.armeria.common.HttpStatus#NOT_MODIFIED

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Example 1
Source File: HttpHealthChecker.java    From armeria with Apache License 2.0 4 votes vote down vote up 
@Override
public void onNext(HttpObject obj) {
    if (closeable.isClosing()) {
        subscription.cancel();
        return;
    }

    try {
        if (!(obj instanceof ResponseHeaders)) {
            ReferenceCountUtil.release(obj);
            return;
        }

        final ResponseHeaders headers = (ResponseHeaders) obj;
        updateLongPollingSettings(headers);

        final HttpStatus status = headers.status();
        final HttpStatusClass statusClass = status.codeClass();
        switch (statusClass) {
            case INFORMATIONAL:
                maybeSchedulePingCheck();
                break;
            case SERVER_ERROR:
                receivedExpectedResponse = true;
                break;
            case SUCCESS:
                isHealthy = true;
                receivedExpectedResponse = true;
                break;
            default:
                if (status == HttpStatus.NOT_MODIFIED) {
                    isHealthy = wasHealthy;
                    receivedExpectedResponse = true;
                } else {
                    // Do not use long polling on an unexpected status for safety.
                    maxLongPollingSeconds = 0;

                    if (statusClass == HttpStatusClass.CLIENT_ERROR) {
                        logger.warn("{} Unexpected 4xx health check response: {} A 4xx response " +
                                    "generally indicates a misconfiguration of the client. " +
                                    "Did you happen to forget to configure the {}'s client options?",
                                    reqCtx, headers, HealthCheckedEndpointGroup.class.getSimpleName());
                    } else {
                        logger.warn("{} Unexpected health check response: {}", reqCtx, headers);
                    }
                }
        }
    } finally {
        subscription.request(1);
    }
}