Java Code Examples for org.apache.qpid.proton.message.Message#getCorrelationId()

/**
 * Checks whether a given credentials message contains all required properties.
 *
 * @param linkTarget The resource path to check the message's properties against for consistency.
 * @param msg The AMQP 1.0 message to perform the checks on.
 * @return {@code true} if the message passes all checks.
 */
public static boolean verify(final ResourceIdentifier linkTarget, final Message msg) {

    if (msg.getMessageId() == null && msg.getCorrelationId() == null) {
        LOG.trace("message has neither a message-id nor correlation-id");
        return false;
    } else if (!CredentialsConstants.CredentialsAction.isValid(msg.getSubject())) {
        LOG.trace("message [{}] does not contain valid subject property", msg.getMessageId());
        return false;
    } else if (msg.getReplyTo() == null) {
        LOG.trace("message [{}] has no reply-to address set", msg.getMessageId());
        return false;
    } else if (!MessageHelper.hasDataBody(msg)) {
        LOG.trace("message [{}] contains no Data section payload", msg.getMessageId());
        return false;
    } else {
        return true;
    }
}
 

private static void traceCommand(final HonoConnection con, final ResourceIdentifier address,
        final Message message) {
    final Tracer tracer = con.getTracer();
    if (tracer instanceof NoopTracer) {
        return;
    }

    // try to extract Span context from incoming message
    final SpanContext spanContext = TracingHelper.extractSpanContext(tracer, message);
    final Span currentSpan = createSpan("receive command", address.getTenantId(),
            address.getResourceId(), null, tracer, spanContext);
    final Object correlationId = message.getCorrelationId();
    if (correlationId == null || correlationId instanceof String) {
        final Map<String, String> items = new HashMap<>(5);
        items.put(Fields.EVENT, "received command message");
        TracingHelper.TAG_CORRELATION_ID.set(currentSpan, ((String) correlationId));
        items.put("to", message.getAddress());
        items.put("reply-to", message.getReplyTo());
        items.put("name", message.getSubject());
        items.put("content-type", message.getContentType());
        currentSpan.log(items);
    } else {
        TracingHelper.logError(currentSpan,
                "received invalid command message. correlation-id is not of type string.");
    }
}
 

private void handleCommand(final Message commandMessage) {

        final String subject = commandMessage.getSubject();
        final String commandPayload = MessageHelper.getPayloadAsString(commandMessage);

        if (commandMessage.getReplyTo() == null || commandMessage.getCorrelationId() == null) {
            // one-way command
            System.out.println(String.format("Received one-way command [name: %s]: %s", subject, commandPayload));
        } else {
            // request-response command
            System.out.println(String.format("Received command [name: %s]: %s", subject, commandPayload));
            sendCommandResponse(commandMessage);
        }
    }
 

/**
 * Creates a command response from a given message.
 *
 * @param message The command response message.
 *
 * @return The command response or {@code null} if message or any of correlationId, address and status is null or if
 *         the status code is < 200 or >= 600.
 * @throws NullPointerException if message is {@code null}.
 */
public static CommandResponse from(final Message message) {
    Objects.requireNonNull(message);

    final String correlationId = message.getCorrelationId() instanceof String ? (String) message.getCorrelationId() : null;
    final Integer status = MessageHelper.getStatus(message);

    if (correlationId == null || message.getAddress() == null || status == null) {
        LOG.debug("cannot create CommandResponse: invalid message (correlationId: {}, address: {}, status: {})",
                correlationId, message.getAddress(), status);
        return null;
    } else if (INVALID_STATUS_CODE.test(status)) {
        LOG.debug("cannot create CommandResponse: status is invalid: {}", status);
        return null;
    } else {
        try {
            final ResourceIdentifier resource = ResourceIdentifier.fromString(message.getAddress());
            MessageHelper.addTenantId(message, resource.getTenantId());
            MessageHelper.addDeviceId(message, resource.getResourceId());

            final String deviceId = resource.getResourceId();
            final String pathWithoutBase = resource.getPathWithoutBase();
            if (pathWithoutBase.length() < deviceId.length() + 3) {
                throw new IllegalArgumentException("invalid resource length");
            }
            // pathWithoutBase starts with deviceId/[bit flag]
            final String replyToOptionsBitFlag = pathWithoutBase.substring(deviceId.length() + 1, deviceId.length() + 2);
            final boolean replyToContainedDeviceId = Command.isReplyToContainedDeviceIdOptionSet(replyToOptionsBitFlag);
            final String replyToId = pathWithoutBase.replaceFirst(deviceId + "/" + replyToOptionsBitFlag,
                    replyToContainedDeviceId ? deviceId + "/" : "");
            return new CommandResponse(message, replyToId);
        } catch (NullPointerException | IllegalArgumentException e) {
            LOG.debug("error creating CommandResponse", e);
            return null;
        }
    }
}
 

/**
 * Checks if an AMQP message contains either a message ID or a correlation ID.
 *
 * @param msg The message.
 * @return {@code true} if the message has an ID that can be used for correlation.
 */
protected static final boolean hasCorrelationId(final Message msg) {

    if (msg.getMessageId() == null && msg.getCorrelationId() == null) {
        LOG.trace("message has neither a message-id nor correlation-id");
        return false;
    } else {
        return true;
    }
}