/**
* Delivery Disposition Handler
*/
static void AMQP_disposition_handler(void* context, qd_link_t *link, pn_delivery_t *pnd)
{
qd_router_t *router = (qd_router_t*) context;
qdr_delivery_t *delivery = (qdr_delivery_t*) pn_delivery_get_context(pnd);
bool give_reference = false;
//
// It's important to not do any processing without a qdr_delivery. When pre-settled
// multi-frame deliveries arrive, it's possible for the settlement to register before
// the whole message arrives. Such premature settlement indications must be ignored.
//
if (!delivery)
return;
//
// If the delivery is settled, remove the linkage between the PN and QDR deliveries.
//
if (pn_delivery_settled(pnd)) {
pn_delivery_set_context(pnd, 0);
qdr_delivery_set_context(delivery, 0);
//
// Don't decref the delivery here. Rather, we will _give_ the reference to the core.
//
give_reference = true;
}
//
// Update the disposition of the delivery
//
qdr_delivery_update_disposition(router->router_core, delivery,
pn_delivery_remote_state(pnd), pn_delivery_settled(pnd),
give_reference);
//
// If settled, close out the delivery
//
if (pn_delivery_settled(pnd))
pn_delivery_settle(pnd);
}
void pni_entry_updated(pni_entry_t *entry)
{
assert(entry);
pn_delivery_t *d = entry->delivery;
if (d) {
if (pn_delivery_remote_state(d)) {
entry->status = disp2status(pn_delivery_remote_state(d));
} else if (pn_delivery_settled(d)) {
uint64_t disp = pn_delivery_local_state(d);
if (disp) {
entry->status = disp2status(disp);
} else {
entry->status = PN_STATUS_SETTLED;
}
} else {
entry->status = PN_STATUS_PENDING;
}
}
}
/**
* Delivery Disposition Handler
*/
static void router_disp_handler(void* context, dx_link_t *link, pn_delivery_t *delivery)
{
pn_link_t *pn_link = pn_delivery_link(delivery);
if (pn_link_is_sender(pn_link)) {
pn_disposition_t disp = pn_delivery_remote_state(delivery);
dx_message_t *msg = pn_delivery_get_context(delivery);
pn_delivery_t *activate = 0;
if (msg) {
assert(delivery == dx_message_out_delivery(msg));
if (disp != 0) {
activate = dx_message_in_delivery(msg);
pn_delivery_update(activate, disp);
// TODO - handling of the data accompanying RECEIVED/MODIFIED
}
if (pn_delivery_settled(delivery)) {
//
// Downstream delivery has been settled. Propagate the settlement
// upstream.
//
activate = dx_message_in_delivery(msg);
pn_delivery_settle(activate);
pn_delivery_settle(delivery);
dx_free_message(msg);
}
if (activate) {
//
// Activate the upstream/incoming link so that the settlement will
// get pushed out.
//
dx_link_t *act_link = (dx_link_t*) pn_link_get_context(pn_delivery_link(activate));
dx_link_activate(act_link);
}
return;
}
}
pn_delivery_settle(delivery);
}
bool transfer::settled() const { return pn_delivery_settled(pn_object()); }
/**
* Inbound Delivery Handler
*/
static void AMQP_rx_handler(void* context, qd_link_t *link, pn_delivery_t *pnd)
{
qd_router_t *router = (qd_router_t*) context;
pn_link_t *pn_link = qd_link_pn(link);
qdr_link_t *rlink = (qdr_link_t*) qd_link_get_context(link);
qdr_delivery_t *delivery = 0;
qd_message_t *msg;
//
// Receive the message into a local representation. If the returned message
// pointer is NULL, we have not yet received a complete message.
//
// Note: In the link-routing case, consider cutting the message through. There's
// no reason to wait for the whole message to be received before starting to
// send it.
//
msg = qd_message_receive(pnd);
if (!msg)
return;
//
// Consume the delivery.
//
pn_link_advance(pn_link);
//
// If there's no router link, free the message and finish. It's likely that the link
// is closing.
//
if (!rlink) {
qd_message_free(msg);
return;
}
//
// Handle the link-routed case
//
if (qdr_link_is_routed(rlink)) {
pn_delivery_tag_t dtag = pn_delivery_tag(pnd);
delivery = qdr_link_deliver_to_routed_link(rlink, msg, pn_delivery_settled(pnd), (uint8_t*) dtag.start, dtag.size);
if (delivery) {
if (pn_delivery_settled(pnd))
pn_delivery_settle(pnd);
else {
pn_delivery_set_context(pnd, delivery);
qdr_delivery_set_context(delivery, pnd);
qdr_delivery_incref(delivery);
}
}
return;
}
//
// Determine if the incoming link is anonymous. If the link is addressed,
// there are some optimizations we can take advantage of.
//
bool anonymous_link = qdr_link_is_anonymous(rlink);
//
// Determine if the user of this connection is allowed to proxy the
// user_id of messages. A message user_id is proxied when the
// property value differs from the authenticated user name of the connection.
// If the user is not allowed to proxy the user_id then the message user_id
// must be blank or it must be equal to the connection user name.
//
bool check_user = false;
qd_connection_t *conn = qd_link_connection(link);
if (conn->policy_settings)
check_user = !conn->policy_settings->allowUserIdProxy;
//
// Validate the content of the delivery as an AMQP message. This is done partially, only
// to validate that we can find the fields we need to route the message.
//
// If the link is anonymous, we must validate through the message properties to find the
// 'to' field. If the link is not anonymous, we don't need the 'to' field as we will be
// using the address from the link target.
//
qd_message_depth_t validation_depth = (anonymous_link || check_user) ? QD_DEPTH_PROPERTIES : QD_DEPTH_MESSAGE_ANNOTATIONS;
bool valid_message = qd_message_check(msg, validation_depth);
if (valid_message) {
if (check_user) {
// This connection must not allow proxied user_id
qd_iterator_t *userid_iter = qd_message_field_iterator(msg, QD_FIELD_USER_ID);
if (userid_iter) {
// The user_id property has been specified
if (qd_iterator_remaining(userid_iter) > 0) {
// user_id property in message is not blank
if (!qd_iterator_equal(userid_iter, (const unsigned char *)conn->user_id)) {
// This message is rejected: attempted user proxy is disallowed
qd_log(router->log_source, QD_LOG_DEBUG, "Message rejected due to user_id proxy violation. User:%s", conn->user_id);
pn_link_flow(pn_link, 1);
pn_delivery_update(pnd, PN_REJECTED);
pn_delivery_settle(pnd);
qd_message_free(msg);
qd_iterator_free(userid_iter);
return;
}
}
qd_iterator_free(userid_iter);
}
}
qd_parsed_field_t *in_ma = qd_message_message_annotations(msg);
qd_bitmask_t *link_exclusions;
bool strip = qdr_link_strip_annotations_in(rlink);
qd_iterator_t *ingress_iter = router_annotate_message(router, in_ma, msg, &link_exclusions, strip);
if (anonymous_link) {
qd_iterator_t *addr_iter = 0;
int phase = 0;
//
// If the message has delivery annotations, get the to-override field from the annotations.
//
if (in_ma) {
qd_parsed_field_t *ma_to = qd_parse_value_by_key(in_ma, QD_MA_TO);
if (ma_to) {
addr_iter = qd_iterator_dup(qd_parse_raw(ma_to));
phase = qd_message_get_phase_annotation(msg);
}
}
//
// Still no destination address? Use the TO field from the message properties.
//
if (!addr_iter)
addr_iter = qd_message_field_iterator(msg, QD_FIELD_TO);
if (addr_iter) {
qd_iterator_reset_view(addr_iter, ITER_VIEW_ADDRESS_HASH);
if (phase > 0)
qd_iterator_annotate_phase(addr_iter, '0' + (char) phase);
delivery = qdr_link_deliver_to(rlink, msg, ingress_iter, addr_iter, pn_delivery_settled(pnd),
link_exclusions);
}
} else {
const char *term_addr = pn_terminus_get_address(qd_link_remote_target(link));
if (!term_addr)
term_addr = pn_terminus_get_address(qd_link_source(link));
if (term_addr) {
qd_composed_field_t *to_override = qd_compose_subfield(0);
qd_compose_insert_string(to_override, term_addr);
qd_message_set_to_override_annotation(msg, to_override);
int phase = qdr_link_phase(rlink);
if (phase != 0)
qd_message_set_phase_annotation(msg, phase);
}
delivery = qdr_link_deliver(rlink, msg, ingress_iter, pn_delivery_settled(pnd), link_exclusions);
}
if (delivery) {
if (pn_delivery_settled(pnd))
pn_delivery_settle(pnd);
else {
pn_delivery_set_context(pnd, delivery);
qdr_delivery_set_context(delivery, pnd);
qdr_delivery_incref(delivery);
}
} else {
//
// The message is now and will always be unroutable because there is no address.
//
pn_link_flow(pn_link, 1);
pn_delivery_update(pnd, PN_REJECTED);
pn_delivery_settle(pnd);
qd_message_free(msg);
}
//
// Rules for delivering messages:
//
// For addressed (non-anonymous) links:
// to-override must be set (done in the core?)
// uses qdr_link_deliver to hand over to the core
//
// For anonymous links:
// If there's a to-override in the annotations, use that address
// Or, use the 'to' field in the message properties
//
} else {
//
// Message is invalid. Reject the message and don't involve the router core.
//
pn_link_flow(pn_link, 1);
pn_delivery_update(pnd, PN_REJECTED);
pn_delivery_settle(pnd);
qd_message_free(msg);
}
}
