mama_status
qpidBridgeMamaSubscription_create (subscriptionBridge* subscriber,
const char* source,
const char* symbol,
mamaTransport tport,
mamaQueue queue,
mamaMsgCallbacks callback,
mamaSubscription subscription,
void* closure)
{
qpidSubscription* impl = NULL;
qpidTransportBridge* transport = NULL;
mama_status status = MAMA_STATUS_OK;
pn_data_t* data = NULL;
if ( NULL == subscriber || NULL == subscription || NULL == tport )
{
mama_log (MAMA_LOG_LEVEL_ERROR,
"qpidBridgeMamaSubscription_create(): something NULL");
return MAMA_STATUS_NULL_ARG;
}
status = mamaTransport_getBridgeTransport (tport,
(transportBridge*) &transport);
if (MAMA_STATUS_OK != status || NULL == transport)
{
mama_log (MAMA_LOG_LEVEL_ERROR,
"qpidBridgeMamaSubscription_create(): something NULL");
return MAMA_STATUS_NULL_ARG;
}
/* Allocate memory for qpid subscription implementation */
impl = (qpidSubscription*) calloc (1, sizeof (qpidSubscription));
if (NULL == impl)
{
return MAMA_STATUS_NOMEM;
}
mamaQueue_getNativeHandle(queue, &impl->mQpidQueue);
impl->mMamaCallback = callback;
impl->mMamaSubscription = subscription;
impl->mMamaQueue = queue;
impl->mTransport = (mamaTransport)transport;
impl->mSymbol = symbol;
impl->mClosure = closure;
impl->mIsNotMuted = 1;
impl->mIsTportDisconnected = 1;
impl->mSubjectKey = NULL;
/* Use a standard centralized method to determine a topic key */
qpidBridgeMamaSubscriptionImpl_generateSubjectKey (NULL,
source,
symbol,
&impl->mSubjectKey);
/* Register the endpoint */
endpointPool_registerWithoutIdentifier (transport->mSubEndpoints,
impl->mSubjectKey,
&impl->mEndpointIdentifier,
impl);
/* Notify the publisher that you have an interest in this topic */
pn_message_clear (transport->mMsg);
/* Set the message meta data to reflect a subscription request */
qpidBridgePublisherImpl_setMessageType (transport->mMsg,
QPID_MSG_SUB_REQUEST);
/* Set the outgoing address as provided by the transport configuration */
pn_message_set_address (transport->mMsg,
transport->mOutgoingAddress);
/* Set the reply address */
pn_message_set_reply_to (transport->mMsg,
transport->mReplyAddress);
/* Get the proton message's body data for writing */
data = pn_message_body (transport->mMsg);
/* Add in the subject key as the only string inside */
pn_data_put_string (data, pn_bytes (strlen (impl->mSubjectKey),
impl->mSubjectKey));
/* Send out the subscription registration of interest message */
if (NULL != transport->mOutgoingAddress)
{
pn_messenger_put (transport->mOutgoing, transport->mMsg);
if (0 != PN_MESSENGER_SEND (transport->mOutgoing))
{
const char* qpid_error = PN_MESSENGER_ERROR (transport->mOutgoing);
mama_log (MAMA_LOG_LEVEL_SEVERE,
"qpidBridgeMamaSubscription_create(): "
"pn_messenger_send Error:[%s]", qpid_error);
return MAMA_STATUS_PLATFORM;
}
}
mama_log (MAMA_LOG_LEVEL_FINEST,
"qpidBridgeMamaSubscription_create(): "
"created interest for %s.",
impl->mSubjectKey);
/* Mark this subscription as valid */
impl->mIsValid = 1;
*subscriber = (subscriptionBridge) impl;
return MAMA_STATUS_OK;
}
void message::clear() {
if (pn_msg_) {
impl().clear();
pn_message_clear(pn_msg_);
}
}