qd_link_t *qd_link(qd_node_t *node, qd_connection_t *conn, qd_direction_t dir, const char* name)
{
qd_link_t *link = new_qd_link_t();
link->pn_sess = pn_session(qd_connection_pn(conn));
pn_session_set_incoming_capacity(link->pn_sess, 1000000);
if (dir == QD_OUTGOING)
link->pn_link = pn_sender(link->pn_sess, name);
else
link->pn_link = pn_receiver(link->pn_sess, name);
link->direction = dir;
link->context = node->context;
link->node = node;
link->drain_mode = pn_link_get_drain(link->pn_link);
link->remote_snd_settle_mode = pn_link_remote_snd_settle_mode(link->pn_link);
link->close_sess_with_link = true;
//
// Keep the borrowed references
//
pn_incref(link->pn_link);
pn_incref(link->pn_sess);
pn_link_set_context(link->pn_link, link);
pn_session_open(link->pn_sess);
return link;
}
void process_connection(ldp_connection_t *conn, pn_event_t *event) {
fprintf(stderr, "connection event %s\n", pn_event_type_name(pn_event_type(event)));
if (pn_event_type(event) == PN_CONNECTION_REMOTE_STATE) {
pn_session_t *session = pn_session(pn_event_connection(event));
pn_session_open(session);
}
}
session connection::default_session() {
connection_context& ctx = connection_context::get(pn_object());
if (!ctx.default_session) {
// Note we can't use a proton::session here because we don't want to own
// a session reference. The connection owns the session, owning it here as well
// would create a circular ownership.
ctx.default_session = pn_session(pn_object());
pn_session_open(ctx.default_session);
}
return make_wrapper(ctx.default_session);
}
/* Test sending/receiving a message in chunks */
static void test_message_stream(test_t *t) {
test_proactor_t tps[] ={
test_proactor(t, message_stream_handler),
test_proactor(t, message_stream_handler)
};
pn_proactor_t *client = tps[0].proactor;
pn_listener_t *l = test_listen(&tps[1], "");
struct message_stream_context ctx = { 0 };
tps[0].handler.context = &ctx;
tps[1].handler.context = &ctx;
/* Encode a large (not very) message to send in chunks */
char *body = (char*)malloc(BODY);
memset(body, 'x', BODY);
pn_message_t *m = pn_message();
pn_data_put_binary(pn_message_body(m), pn_bytes(BODY, body));
free(body);
ctx.size = message_encode(m, &ctx.send_buf);
pn_message_free(m);
pn_connection_t *c = pn_connection();
pn_proactor_connect2(client, c, NULL, listener_info(l).connect);
pn_session_t *ssn = pn_session(c);
pn_session_open(ssn);
pn_link_t *snd = pn_sender(ssn, "x");
pn_link_open(snd);
TEST_PROACTORS_RUN_UNTIL(tps, PN_LINK_FLOW);
/* Send and receive the message in chunks */
do {
pn_connection_wake(c); /* Initiate send/receive of one chunk */
do { /* May be multiple receives for one send */
TEST_PROACTORS_RUN_UNTIL(tps, PN_DELIVERY);
} while (ctx.received < ctx.sent);
} while (!ctx.complete);
TEST_CHECK(t, ctx.received == ctx.size);
TEST_CHECK(t, ctx.sent == ctx.size);
TEST_CHECK(t, !memcmp(ctx.send_buf.start, ctx.recv_buf.start, ctx.size));
free(ctx.send_buf.start);
free(ctx.recv_buf.start);
TEST_PROACTORS_DESTROY(tps);
}
boost::shared_ptr<SessionContext> ConnectionContext::newSession(bool transactional, const std::string& n)
{
qpid::sys::ScopedLock<qpid::sys::Monitor> l(lock);
if (transactional) throw qpid::messaging::MessagingException("Transactions not yet supported");
std::string name = n.empty() ? qpid::framing::Uuid(true).str() : n;
SessionMap::const_iterator i = sessions.find(name);
if (i == sessions.end()) {
boost::shared_ptr<SessionContext> s(new SessionContext(connection));
s->session = pn_session(connection);
pn_session_open(s->session);
sessions[name] = s;
wakeupDriver();
while (pn_session_state(s->session) & PN_REMOTE_UNINIT) {
wait();
}
return s;
} else {
throw qpid::messaging::KeyError(std::string("Session already exists: ") + name);
}
}
pn_link_t *pn_messenger_link(pn_messenger_t *messenger, const char *address, bool sender)
{
char buf[(address ? strlen(address) : 0) + 1];
if (address) {
strcpy(buf, address);
} else {
buf[0] = '\0';
}
char *domain;
char *name;
parse_address(address ? buf : NULL, &domain, &name);
pn_connection_t *connection = pn_messenger_domain(messenger, domain);
if (!connection) return NULL;
pn_link_t *link = pn_link_head(connection, PN_LOCAL_ACTIVE);
while (link) {
if (pn_is_sender(link) == sender) {
const char *terminus = pn_is_sender(link) ? pn_target(link) : pn_source(link);
if (pn_streq(name, terminus))
return link;
}
link = pn_link_next(link, PN_LOCAL_ACTIVE);
}
pn_session_t *ssn = pn_session(connection);
pn_session_open(ssn);
link = sender ? pn_sender(ssn, "sender-xxx") : pn_receiver(ssn, "receiver-xxx");
// XXX
if (sender) {
pn_set_target(link, name);
pn_set_source(link, name);
} else {
pn_set_target(link, name);
pn_set_source(link, name);
}
pn_link_open(link);
return link;
}
void Interconnect::process()
{
QPID_LOG(trace, id << " processing interconnect");
if (closeRequested) {
close();
} else {
if ((pn_connection_state(connection) & UNINIT) == UNINIT) {
QPID_LOG_CAT(debug, model, id << " interconnect open initiated");
pn_connection_set_container(connection, getBroker().getFederationTag().c_str());
setProperties(connection);
pn_connection_open(connection);
out.connectionEstablished();
setInterconnectDomain(domain);
}
if (!isOpened && (pn_connection_state(connection) & PN_REMOTE_ACTIVE)) {
QPID_LOG_CAT(debug, model, id << " interconnect open completed, attaching link");
isOpened = true;
readPeerProperties();
const char* containerid(pn_connection_remote_container(connection));
if (containerid) {
setContainerId(std::string(containerid));
}
opened();
getBroker().getConnectionObservers().opened(*this);
pn_session_t* s = pn_session(connection);
pn_session_open(s);
boost::shared_ptr<Session> ssn(new Session(s, *this, out));
sessions[s] = ssn;
pn_link_t* l = incoming ? pn_receiver(s, name.c_str()) : pn_sender(s, name.c_str());
pn_link_open(l);
ssn->attach(l, source, target, relay);
}
Connection::process();
}
}
void connection_dispatch(pn_handler_t *h, pn_event_t *event, pn_event_type_t type)
{
connection_context_t *cc = connection_context(h);
bool replying = cc->global->opts->reply;
switch (type) {
case PN_LINK_REMOTE_OPEN:
{
pn_link_t *link = pn_event_link(event);
if (pn_link_is_receiver(link)) {
check(cc->recv_link == NULL, "Multiple incomming links on one connection");
cc->recv_link = link;
pn_connection_t *conn = pn_event_connection(event);
pn_list_add(cc->global->active_connections, conn);
if (cc->global->shutting_down) {
pn_connection_close(conn);
break;
}
if (replying) {
// Set up a reply link and defer granting credit to the incoming link
pn_connection_t *conn = pn_session_connection(pn_link_session(link));
pn_session_t *ssn = pn_session(conn);
pn_session_open(ssn);
char name[100]; // prefer a multiplatform uuid generator
sprintf(name, "reply_sender_%d", cc->connection_id);
cc->reply_link = pn_sender(ssn, name);
pn_link_open(cc->reply_link);
}
else {
pn_flowcontroller_t *fc = pn_flowcontroller(1024);
pn_handler_add(h, fc);
pn_decref(fc);
}
}
}
break;
case PN_LINK_FLOW:
{
if (replying) {
pn_link_t *reply_link = pn_event_link(event);
// pn_flowcontroller handles the non-reply case
check(reply_link == cc->reply_link, "internal error");
// Grant the sender as much credit as just given to us for replies
int delta = pn_link_credit(reply_link) - pn_link_credit(cc->recv_link);
if (delta > 0)
pn_link_flow(cc->recv_link, delta);
}
}
break;
case PN_DELIVERY:
{
pn_link_t *recv_link = pn_event_link(event);
pn_delivery_t *dlv = pn_event_delivery(event);
if (pn_link_is_receiver(recv_link) && !pn_delivery_partial(dlv)) {
if (cc->global->received == 0) statistics_start(cc->global->stats);
size_t encoded_size = pn_delivery_pending(dlv);
cc->global->encoded_data = ensure_buffer(cc->global->encoded_data, encoded_size,
&cc->global->encoded_data_size);
check(cc->global->encoded_data, "decoding buffer realloc failure");
ssize_t n = pn_link_recv(recv_link, cc->global->encoded_data, encoded_size);
check(n == (ssize_t) encoded_size, "message data read fail");
pn_message_t *msg = cc->global->message;
int err = pn_message_decode(msg, cc->global->encoded_data, n);
check(err == 0, "message decode error");
cc->global->received++;
pn_delivery_settle(dlv);
statistics_msg_received(cc->global->stats, msg);
if (replying) {
const char *reply_addr = pn_message_get_reply_to(msg);
if (reply_addr) {
pn_link_t *rl = cc->reply_link;
check(pn_link_credit(rl) > 0, "message received without corresponding reply credit");
LOG("Replying to: %s\n", reply_addr );
pn_message_set_address(msg, reply_addr);
pn_message_set_creation_time(msg, msgr_now());
char tag[8];
void *ptr = &tag;
*((uint64_t *) ptr) = cc->global->sent;
pn_delivery_t *dlv = pn_delivery(rl, pn_dtag(tag, 8));
size_t size = cc->global->encoded_data_size;
int err = pn_message_encode(msg, cc->global->encoded_data, &size);
check(err == 0, "message encoding error");
pn_link_send(rl, cc->global->encoded_data, size);
pn_delivery_settle(dlv);
cc->global->sent++;
}
}
}
if (cc->global->received >= cc->global->opts->msg_count) {
global_shutdown(cc->global);
}
}
break;
case PN_CONNECTION_UNBOUND:
{
pn_connection_t *conn = pn_event_connection(event);
pn_list_remove(cc->global->active_connections, conn);
pn_connection_release(conn);
}
break;
default:
break;
}
}
/* runs the protocol engine, allowing it to handle TCP socket I/O and timer
* events in the background.
*/
static void *amqp1_thread(void *arg)
{
DBGPRINTF("omamqp1: Protocol thread started\n");
pn_handler_t *handler = (pn_handler_t *)arg;
protocolState_t *ps = PROTOCOL_STATE(handler);
const configSettings_t *cfg = ps->config;
// have pn_reactor_process() exit after 5 sec to poll for commands
pn_reactor_set_timeout(ps->reactor, 5000);
pn_reactor_start(ps->reactor);
while (!ps->stopped) {
// setup a connection:
const char *host = pn_url_get_host(cfg->url);
const char *port = pn_url_get_port(cfg->url);
if (!port) port = "5672";
#if PN_VERSION_MAJOR == 0 && PN_VERSION_MINOR >= 13
ps->conn = pn_reactor_connection_to_host(ps->reactor,
host,
port,
handler);
pn_connection_set_hostname(ps->conn, host);
#else
{
char host_addr[300];
ps->conn = pn_reactor_connection(ps->reactor, handler);
snprintf(host_addr, sizeof(host_addr), "%s:%s", host, port);
pn_connection_set_hostname(ps->conn, host_addr);
}
#endif
pn_connection_set_container(ps->conn, "rsyslogd-omamqp1");
#if PN_VERSION_MAJOR == 0 && PN_VERSION_MINOR >= 10
// proton version <= 0.9 did not support Cyrus SASL
const char *user = cfg->username
? (char *)cfg->username
: pn_url_get_username(cfg->url);
if (user)
pn_connection_set_user(ps->conn, user);
const char *pword = cfg->password
? (char *) cfg->password
: pn_url_get_password(cfg->url);
if (pword)
pn_connection_set_password(ps->conn, pword);
#endif
pn_connection_open(ps->conn);
pn_session_t *ssn = pn_session(ps->conn);
pn_session_open(ssn);
ps->sender = pn_sender(ssn, (char *)cfg->target);
pn_link_set_snd_settle_mode(ps->sender, PN_SND_UNSETTLED);
char *addr = (char *)ps->config->target;
pn_terminus_set_address(pn_link_target(ps->sender), addr);
pn_terminus_set_address(pn_link_source(ps->sender), addr);
pn_link_open(ps->sender);
// run the protocol engine until the connection closes or thread is shut down
sbool engine_running = true;
while (engine_running) {
engine_running = pn_reactor_process(ps->reactor);
_poll_command(ps);
}
DBGPRINTF("omamqp1: reactor finished\n");
_abort_command(ps); // unblock main thread if necessary
// delay reconnectDelay seconds before re-connecting:
int delay = ps->config->reconnectDelay;
while (delay-- > 0 && !ps->stopped) {
srSleep(1, 0);
_poll_command(ps);
}
}
pn_reactor_stop(ps->reactor);
// stop command is now done:
threadIPC_t *ipc = ps->ipc;
pthread_mutex_lock(&ipc->lock);
ipc->result = RS_RET_OK;
ipc->command = COMMAND_DONE;
pthread_cond_signal(&ipc->condition);
pthread_mutex_unlock(&ipc->lock);
DBGPRINTF("omamqp1: Protocol thread stopped\n");
return 0;
}
void client_callback(pn_connector_t *ctor)
{
struct client_context *ctx = pn_connector_context(ctor);
if (pn_connector_closed(ctor)) {
ctx->done = true;
}
pn_sasl_t *sasl = pn_connector_sasl(ctor);
while (pn_sasl_state(sasl) != PN_SASL_PASS) {
pn_sasl_state_t st = pn_sasl_state(sasl);
switch (st) {
case PN_SASL_IDLE:
return;
case PN_SASL_CONF:
if (ctx->mechanism && !strcmp(ctx->mechanism, "PLAIN")) {
pn_sasl_plain(sasl, ctx->username, ctx->password);
} else {
pn_sasl_mechanisms(sasl, ctx->mechanism);
pn_sasl_client(sasl);
}
break;
case PN_SASL_STEP:
if (pn_sasl_pending(sasl)) {
fprintf(stderr, "challenge failed\n");
ctx->done = true;
}
return;
case PN_SASL_FAIL:
fprintf(stderr, "authentication failed\n");
ctx->done = true;
return;
case PN_SASL_PASS:
break;
}
}
pn_connection_t *connection = pn_connector_connection(ctor);
char tagstr[1024];
char msg[ctx->size];
char data[ctx->size + 16];
for (int i = 0; i < ctx->size; i++) {
msg[i] = 'x';
}
size_t ndata = pn_message_data(data, ctx->size + 16, msg, ctx->size);
if (!ctx->init) {
ctx->init = true;
char container[1024];
if (gethostname(container, 1024)) pn_fatal("hostname lookup failed");
pn_connection_set_container(connection, container);
pn_connection_set_hostname(connection, ctx->hostname);
pn_session_t *ssn = pn_session(connection);
pn_connection_open(connection);
pn_session_open(ssn);
if (ctx->send_count) {
pn_link_t *snd = pn_sender(ssn, "sender");
pn_set_target(snd, ctx->address);
pn_link_open(snd);
char buf[16];
for (int i = 0; i < ctx->send_count; i++) {
sprintf(buf, "%x", i);
pn_delivery(snd, pn_dtag(buf, strlen(buf)));
}
}
if (ctx->recv_count) {
pn_link_t *rcv = pn_receiver(ssn, "receiver");
pn_set_source(rcv, ctx->address);
pn_link_open(rcv);
pn_flow(rcv, ctx->recv_count < ctx->high ? ctx->recv_count : ctx->high);
}
}
pn_delivery_t *delivery = pn_work_head(connection);
while (delivery)
{
pn_delivery_tag_t tag = pn_delivery_tag(delivery);
pn_quote_data(tagstr, 1024, tag.bytes, tag.size);
pn_link_t *link = pn_link(delivery);
if (pn_writable(delivery)) {
pn_send(link, data, ndata);
if (pn_advance(link)) {
if (!ctx->quiet) printf("sent delivery: %s\n", tagstr);
}
} else if (pn_readable(delivery)) {
if (!ctx->quiet) {
printf("received delivery: %s\n", tagstr);
printf(" payload = \"");
}
while (true) {
size_t n = pn_recv(link, msg, 1024);
if (n == PN_EOS) {
pn_advance(link);
pn_disposition(delivery, PN_ACCEPTED);
pn_settle(delivery);
if (!--ctx->recv_count) {
pn_link_close(link);
}
break;
} else if (!ctx->quiet) {
pn_print_data(msg, n);
}
}
if (!ctx->quiet) printf("\"\n");
if (pn_credit(link) < ctx->low && pn_credit(link) < ctx->recv_count) {
pn_flow(link, (ctx->recv_count < ctx->high ? ctx->recv_count : ctx->high) - pn_credit(link));
}
}
if (pn_updated(delivery)) {
if (!ctx->quiet) printf("disposition for %s: %u\n", tagstr, pn_remote_disposition(delivery));
pn_clear(delivery);
pn_settle(delivery);
if (!--ctx->send_count) {
pn_link_close(link);
}
}
delivery = pn_work_next(delivery);
}
if (!ctx->send_count && !ctx->recv_count) {
printf("closing\n");
// XXX: how do we close the session?
//pn_close((pn_endpoint_t *) ssn);
pn_connection_close(connection);
}
if (pn_connection_state(connection) == (PN_LOCAL_CLOSED | PN_REMOTE_CLOSED)) {
ctx->done = true;
}
}
session connection::open_session(const session_options &opts) {
session s(make_wrapper<session>(pn_session(pn_object())));
// TODO: error check, too many sessions, no mem...
if (!!s) s.open(opts);
return s;
}
void sender_dispatch(pn_handler_t *h, pn_event_t *event, pn_event_type_t type)
{
sender_context_t *sc = sender_context(h);
switch (type) {
case PN_CONNECTION_INIT:
{
pn_connection_t *conn = pn_event_connection(event);
pn_connection_set_container(conn, pn_string_get(sc->container_id));
pn_connection_set_hostname(conn, pn_string_get(sc->hostname));
pn_connection_open(conn);
pn_session_t *ssn = pn_session(conn);
pn_session_open(ssn);
pn_link_t *snd = pn_sender(ssn, "sender");
const char *path = pn_url_get_path(sc->send_url);
if (path && strlen(path)) {
pn_terminus_set_address(pn_link_target(snd), path);
pn_terminus_set_address(pn_link_source(snd), path);
}
pn_link_open(snd);
}
break;
case PN_LINK_FLOW:
{
pn_link_t *snd = pn_event_link(event);
while (pn_link_credit(snd) > 0 && sc->sent < sc->opts->msg_count) {
if (sc->sent == 0)
statistics_start(sc->stats);
char tag[8];
void *ptr = &tag;
*((uint64_t *) ptr) = sc->sent;
pn_delivery_t *dlv = pn_delivery(snd, pn_dtag(tag, 8));
// setup the message to send
pn_message_t *msg = sc->message;
pn_message_set_address(msg, sc->opts->targets.addresses[0]);
sc->id.u.as_ulong = sc->sent;
pn_message_set_correlation_id(msg, sc->id);
pn_message_set_creation_time(msg, msgr_now());
size_t size = sc->encoded_data_size;
int err = pn_message_encode(msg, sc->encoded_data, &size);
check(err == 0, "message encoding error");
pn_link_send(snd, sc->encoded_data, size);
pn_delivery_settle(dlv);
sc->sent++;
}
if (sc->sent == sc->opts->msg_count && !sc->opts->get_replies) {
pn_link_close(snd);
pn_connection_t *conn = pn_event_connection(event);
pn_connection_close(conn);
}
}
break;
case PN_LINK_INIT:
{
pn_link_t *link = pn_event_link(event);
if (pn_link_is_receiver(link)) {
// Response messages link. Could manage credit and deliveries in this handler but
// a dedicated handler also works.
pn_handler_t *replyto = replyto_handler(sc);
pn_flowcontroller_t *fc = pn_flowcontroller(1024);
pn_handler_add(replyto, fc);
pn_decref(fc);
pn_handshaker_t *handshaker = pn_handshaker();
pn_handler_add(replyto, handshaker);
pn_decref(handshaker);
pn_record_t *record = pn_link_attachments(link);
pn_record_set_handler(record, replyto);
pn_decref(replyto);
}
}
break;
case PN_CONNECTION_LOCAL_CLOSE:
{
statistics_report(sc->stats, sc->sent, sc->received);
}
break;
default:
break;
}
}
session& connection::create_session() {
return *session::cast(pn_session(pn_cast(this)));
}
/* Process each event posted by the reactor.
*/
static void event_handler(pn_handler_t *handler,
pn_event_t *event,
pn_event_type_t type)
{
app_data_t *data = GET_APP_DATA(handler);
switch (type) {
case PN_CONNECTION_INIT: {
// Create and open all the endpoints needed to send a message
//
pn_connection_t *conn;
pn_session_t *ssn;
pn_link_t *sender;
conn = pn_event_connection(event);
pn_connection_open(conn);
ssn = pn_session(conn);
pn_session_open(ssn);
sender = pn_sender(ssn, "MySender");
// we do not wait for ack until the last message
pn_link_set_snd_settle_mode(sender, PN_SND_MIXED);
if (!data->anon) {
pn_terminus_set_address(pn_link_target(sender), data->target);
}
pn_link_open(sender);
} break;
case PN_LINK_FLOW: {
// the remote has given us some credit, now we can send messages
//
static long tag = 0; // a simple tag generator
pn_delivery_t *delivery;
pn_link_t *sender = pn_event_link(event);
int credit = pn_link_credit(sender);
while (credit > 0 && data->count > 0) {
--credit;
--data->count;
++tag;
delivery = pn_delivery(sender,
pn_dtag((const char *)&tag, sizeof(tag)));
pn_link_send(sender, data->msg_data, data->msg_len);
pn_link_advance(sender);
if (data->count > 0) {
// send pre-settled until the last one, then wait for an ack on
// the last sent message. This allows the sender to send
// messages as fast as possible and then exit when the consumer
// has dealt with the last one.
//
pn_delivery_settle(delivery);
}
}
} break;
case PN_DELIVERY: {
// Since the example sends all messages but the last pre-settled
// (pre-acked), only the last message's delivery will get updated with
// the remote state (acked/nacked).
//
pn_delivery_t *dlv = pn_event_delivery(event);
if (pn_delivery_updated(dlv) && pn_delivery_remote_state(dlv)) {
uint64_t rs = pn_delivery_remote_state(dlv);
int done = 1;
switch (rs) {
case PN_RECEIVED:
// This is not a terminal state - it is informational, and the
// peer is still processing the message.
done = 0;
break;
case PN_ACCEPTED:
pn_delivery_settle(dlv);
if (!quiet) fprintf(stdout, "Send complete!\n");
break;
case PN_REJECTED:
case PN_RELEASED:
case PN_MODIFIED:
pn_delivery_settle(dlv);
fprintf(stderr, "Message not accepted - code:%lu\n", (unsigned long)rs);
break;
default:
// ??? no other terminal states defined, so ignore anything else
pn_delivery_settle(dlv);
fprintf(stderr, "Unknown delivery failure - code=%lu\n", (unsigned long)rs);
break;
}
if (done) {
// initiate clean shutdown of the endpoints
pn_link_t *link = pn_delivery_link(dlv);
pn_session_t *ssn = pn_link_session(link);
pn_link_close(link);
pn_session_close(ssn);
pn_connection_close(pn_session_connection(ssn));
}
}
} break;
case PN_TRANSPORT_ERROR: {
// The connection to the peer failed.
//
pn_transport_t *tport = pn_event_transport(event);
pn_condition_t *cond = pn_transport_condition(tport);
fprintf(stderr, "Network transport failed!\n");
if (pn_condition_is_set(cond)) {
const char *name = pn_condition_get_name(cond);
const char *desc = pn_condition_get_description(cond);
fprintf(stderr, " Error: %s Description: %s\n",
(name) ? name : "<error name not provided>",
(desc) ? desc : "<no description provided>");
}
// pn_reactor_process() will exit with a false return value, stopping
// the main loop.
} break;
default:
break;
}
}