/* Process each event emitted by the protocol engine */
static void dispatcher(pn_handler_t *handler, pn_event_t *event, pn_event_type_t type)
{
protocolState_t *ps = PROTOCOL_STATE(handler);
const configSettings_t *cfg = ps->config;
//DBGPRINTF("omamqp1: Event received: %s\n", pn_event_type_name(type));
switch (type) {
case PN_LINK_REMOTE_OPEN:
DBGPRINTF("omamqp1: Message bus opened link.\n");
break;
case PN_DELIVERY:
// has the message been delivered to the message bus?
if (ps->delivery) {
assert(ps->delivery == pn_event_delivery(event));
if (pn_delivery_updated(ps->delivery)) {
rsRetVal result = RS_RET_IDLE;
uint64_t rs = pn_delivery_remote_state(ps->delivery);
switch (rs) {
case PN_ACCEPTED:
DBGPRINTF("omamqp1: Message ACCEPTED by message bus\n");
result = RS_RET_OK;
break;
case PN_REJECTED:
dbgprintf("omamqp1: message bus rejected log message: invalid message - dropping\n");
// message bus considers this a 'bad message'. Cannot be redelivered.
// Likely a configuration error. Drop the message by returning OK
result = RS_RET_OK;
break;
case PN_RELEASED:
case PN_MODIFIED:
// the message bus cannot accept the message. This may be temporary - retry
// up to maxRetries before dropping
if (++ps->retries >= cfg->maxRetries) {
dbgprintf("omamqp1: message bus failed to accept message - dropping\n");
result = RS_RET_OK;
} else {
dbgprintf("omamqp1: message bus cannot accept message, retrying\n");
result = RS_RET_SUSPENDED;
}
break;
case PN_RECEIVED:
// not finished yet, wait for next delivery update
break;
default:
// no other terminal states defined, so ignore anything else
dbgprintf("omamqp1: unknown delivery state=0x%lX, assuming message accepted\n",
(unsigned long) pn_delivery_remote_state(ps->delivery));
result = RS_RET_OK;
break;
}
if (result != RS_RET_IDLE) {
// the command is complete
threadIPC_t *ipc = ps->ipc;
pthread_mutex_lock(&ipc->lock);
assert(ipc->command == COMMAND_SEND);
ipc->result = result;
ipc->command = COMMAND_DONE;
pthread_cond_signal(&ipc->condition);
pthread_mutex_unlock(&ipc->lock);
pn_delivery_settle(ps->delivery);
ps->delivery = NULL;
if (result == RS_RET_OK) {
ps->retries = 0;
}
}
}
}
break;
case PN_CONNECTION_BOUND:
if (!cfg->bDisableSASL) {
// force use of SASL, even allowing PLAIN authentication
pn_sasl_t *sasl = pn_sasl(pn_event_transport(event));
#if PN_VERSION_MAJOR == 0 && PN_VERSION_MINOR >= 10
pn_sasl_set_allow_insecure_mechs(sasl, true);
#else
// proton version <= 0.9 only supports PLAIN authentication
const char *user = cfg->username
? (char *)cfg->username
: pn_url_get_username(cfg->url);
if (user) {
pn_sasl_plain(sasl, user, (cfg->password
? (char *) cfg->password
: pn_url_get_password(cfg->url)));
}
#endif
}
if (cfg->idleTimeout) {
// configured as seconds, set as milliseconds
pn_transport_set_idle_timeout(pn_event_transport(event),
cfg->idleTimeout * 1000);
}
break;
case PN_CONNECTION_UNBOUND:
DBGPRINTF("omamqp1: cleaning up connection resources\n");
pn_connection_release(pn_event_connection(event));
ps->conn = NULL;
ps->sender = NULL;
ps->delivery = NULL;
break;
case PN_TRANSPORT_ERROR:
{
// TODO: if auth failure, does it make sense to retry???
pn_transport_t *tport = pn_event_transport(event);
pn_condition_t *cond = pn_transport_condition(tport);
if (pn_condition_is_set(cond)) {
_log_error("transport failure", cond);
}
dbgprintf("omamqp1: network transport failed, reconnecting...\n");
// the protocol thread will attempt to reconnect if it is not
// being shut down
}
break;
default:
break;
}
}
void apply(connection& c) {
pn_connection_t *pnc = connection_options::pn_connection(c);
pn_transport_t *pnt = pn_connection_transport(pnc);
connector *outbound = dynamic_cast<connector*>(
connection_context::get(c).handler.get());
bool uninit = (c.state() & endpoint::LOCAL_UNINIT);
// pnt is NULL between reconnect attempts.
// Only apply transport options if uninit or outbound with
// transport not yet configured.
if (pnt && (uninit || (outbound && !outbound->transport_configured())))
{
// SSL
if (outbound && outbound->address().scheme() == url::AMQPS) {
pn_ssl_t *ssl = pn_ssl(pnt);
if (pn_ssl_init(ssl, ssl_client_options.value.pn_domain(), NULL))
throw error(MSG("client SSL/TLS initialization error"));
} else if (!outbound) {
pn_acceptor_t *pnp = pn_connection_acceptor(pnc);
if (pnp) {
listener_context &lc(listener_context::get(pnp));
if (lc.ssl) {
pn_ssl_t *ssl = pn_ssl(pnt);
if (pn_ssl_init(ssl, ssl_server_options.value.pn_domain(), NULL))
throw error(MSG("server SSL/TLS initialization error"));
}
}
}
// SASL
transport t = c.transport();
if (!sasl_enabled.set || sasl_enabled.value) {
if (sasl_enabled.set) // Explicitly set, not just default behaviour.
t.sasl(); // Force a sasl instance. Lazily create one otherwise.
if (sasl_allow_insecure_mechs.set)
t.sasl().allow_insecure_mechs(sasl_allow_insecure_mechs.value);
if (sasl_allowed_mechs.set)
t.sasl().allowed_mechs(sasl_allowed_mechs.value);
if (sasl_config_name.set)
t.sasl().config_name(sasl_config_name.value);
if (sasl_config_path.set)
t.sasl().config_path(sasl_config_path.value);
}
if (max_frame_size.set)
pn_transport_set_max_frame(pnt, max_frame_size.value);
if (max_channels.set)
pn_transport_set_channel_max(pnt, max_channels.value);
if (idle_timeout.set)
pn_transport_set_idle_timeout(pnt, idle_timeout.value.ms());
}
// Only apply connection options if uninit.
if (uninit) {
if (reconnect.set && outbound)
outbound->reconnect_timer(reconnect.value);
if (container_id.set)
pn_connection_set_container(pnc, container_id.value.c_str());
if (link_prefix.set)
connection_context::get(pnc).link_gen.prefix(link_prefix.value);
}
}
