static int
zyre_node_recv_peer (zyre_node_t *self)
{
// Router socket tells us the identity of this peer
zre_msg_t *msg = zre_msg_recv (self->inbox);
if (msg == NULL)
return 0; // Interrupted
// First frame is sender identity, holding binary UUID
zuuid_t *uuid = zuuid_new ();
zuuid_set (uuid, zframe_data (zre_msg_address (msg)));
// On HELLO we may create the peer if it's unknown
// On other commands the peer must already exist
zyre_peer_t *peer = (zyre_peer_t *) zhash_lookup (self->peers, zuuid_str (uuid));
if (zre_msg_id (msg) == ZRE_MSG_HELLO) {
peer = zyre_node_require_peer (self, uuid, zre_msg_ipaddress (msg), zre_msg_mailbox (msg));
assert (peer);
zyre_peer_set_ready (peer, true);
}
// Ignore command if peer isn't ready
if (peer == NULL || !zyre_peer_ready (peer)) {
zre_msg_destroy (&msg);
zuuid_destroy (&uuid);
return 0;
}
if (!zyre_peer_check_message (peer, msg)) {
zclock_log ("W: [%s] lost messages from %s", zuuid_str (self->uuid), zuuid_str (uuid));
assert (false);
}
// Now process each command
if (zre_msg_id (msg) == ZRE_MSG_HELLO) {
// Tell the caller about the peer
zstr_sendm (self->pipe, "ENTER");
zstr_sendm (self->pipe, zuuid_str (uuid));
zframe_t *headers = zhash_pack (zre_msg_headers (msg));
zframe_send (&headers, self->pipe, 0);
// Join peer to listed groups
char *name = zre_msg_groups_first (msg);
while (name) {
zyre_node_join_peer_group (self, peer, name);
name = zre_msg_groups_next (msg);
}
// Hello command holds latest status of peer
zyre_peer_set_status (peer, zre_msg_status (msg));
// Store peer headers for future reference
zyre_peer_set_headers (peer, zre_msg_headers (msg));
// If peer is a ZRE/LOG collector, connect to it
char *collector = zre_msg_headers_string (msg, "X-ZRELOG", NULL);
if (collector)
zyre_log_connect (self->log, collector);
}
else
if (zre_msg_id (msg) == ZRE_MSG_WHISPER) {
// Pass up to caller API as WHISPER event
zstr_sendm (self->pipe, "WHISPER");
zstr_sendm (self->pipe, zuuid_str (uuid));
zmsg_t *content = zmsg_dup (zre_msg_content (msg));
zmsg_send (&content, self->pipe);
}
else
if (zre_msg_id (msg) == ZRE_MSG_SHOUT) {
// Pass up to caller as SHOUT event
zstr_sendm (self->pipe, "SHOUT");
zstr_sendm (self->pipe, zuuid_str (uuid));
zstr_sendm (self->pipe, zre_msg_group (msg));
zmsg_t *content = zmsg_dup (zre_msg_content (msg));
zmsg_send (&content, self->pipe);
}
else
if (zre_msg_id (msg) == ZRE_MSG_PING) {
zre_msg_t *msg = zre_msg_new (ZRE_MSG_PING_OK);
zyre_peer_send (peer, &msg);
}
else
if (zre_msg_id (msg) == ZRE_MSG_JOIN) {
zyre_node_join_peer_group (self, peer, zre_msg_group (msg));
assert (zre_msg_status (msg) == zyre_peer_status (peer));
}
else
if (zre_msg_id (msg) == ZRE_MSG_LEAVE) {
zyre_node_leave_peer_group (self, peer, zre_msg_group (msg));
assert (zre_msg_status (msg) == zyre_peer_status (peer));
}
zuuid_destroy (&uuid);
zre_msg_destroy (&msg);
// Activity from peer resets peer timers
zyre_peer_refresh (peer);
return 0;
}
static void
zyre_node_recv_peer (zyre_node_t *self)
{
// Router socket tells us the identity of this peer
zre_msg_t *msg = zre_msg_recv (self->inbox);
if (!msg)
return; // Interrupted
// First frame is sender identity
byte *peerid_data = zframe_data (zre_msg_routing_id (msg));
size_t peerid_size = zframe_size (zre_msg_routing_id (msg));
// Identity must be [1] followed by 16-byte UUID
if (peerid_size != ZUUID_LEN + 1) {
zre_msg_destroy (&msg);
return;
}
zuuid_t *uuid = zuuid_new ();
zuuid_set (uuid, peerid_data + 1);
// On HELLO we may create the peer if it's unknown
// On other commands the peer must already exist
zyre_peer_t *peer = (zyre_peer_t *) zhash_lookup (self->peers, zuuid_str (uuid));
if (zre_msg_id (msg) == ZRE_MSG_HELLO) {
if (peer) {
// Remove fake peers
if (zyre_peer_ready (peer)) {
zyre_node_remove_peer (self, peer);
assert (!(zyre_peer_t *) zhash_lookup (self->peers, zuuid_str (uuid)));
}
else
if (streq (zyre_peer_endpoint (peer), self->endpoint)) {
// We ignore HELLO, if peer has same endpoint as current node
zre_msg_destroy (&msg);
zuuid_destroy (&uuid);
return;
}
}
peer = zyre_node_require_peer (self, uuid, zre_msg_endpoint (msg));
assert (peer);
zyre_peer_set_ready (peer, true);
}
// Ignore command if peer isn't ready
if (peer == NULL || !zyre_peer_ready (peer)) {
zre_msg_destroy (&msg);
zuuid_destroy (&uuid);
return;
}
if (zyre_peer_messages_lost (peer, msg)) {
zsys_warning ("(%s) messages lost from %s", self->name, zyre_peer_name (peer));
zyre_node_remove_peer (self, peer);
zre_msg_destroy (&msg);
zuuid_destroy (&uuid);
return;
}
// Now process each command
if (zre_msg_id (msg) == ZRE_MSG_HELLO) {
// Store properties from HELLO command into peer
zyre_peer_set_name (peer, zre_msg_name (msg));
zyre_peer_set_headers (peer, zre_msg_headers (msg));
// Tell the caller about the peer
zstr_sendm (self->outbox, "ENTER");
zstr_sendm (self->outbox, zyre_peer_identity (peer));
zstr_sendm (self->outbox, zyre_peer_name (peer));
zframe_t *headers = zhash_pack (zyre_peer_headers (peer));
zframe_send (&headers, self->outbox, ZFRAME_MORE);
zstr_send (self->outbox, zre_msg_endpoint (msg));
if (self->verbose)
zsys_info ("(%s) ENTER name=%s endpoint=%s",
self->name, zyre_peer_name (peer), zyre_peer_endpoint (peer));
// Join peer to listed groups
const char *name = zre_msg_groups_first (msg);
while (name) {
zyre_node_join_peer_group (self, peer, name);
name = zre_msg_groups_next (msg);
}
// Now take peer's status from HELLO, after joining groups
zyre_peer_set_status (peer, zre_msg_status (msg));
}
else
if (zre_msg_id (msg) == ZRE_MSG_WHISPER) {
// Pass up to caller API as WHISPER event
zstr_sendm (self->outbox, "WHISPER");
zstr_sendm (self->outbox, zuuid_str (uuid));
zstr_sendm (self->outbox, zyre_peer_name (peer));
zmsg_t *content = zmsg_dup (zre_msg_content (msg));
zmsg_send (&content, self->outbox);
}
else
if (zre_msg_id (msg) == ZRE_MSG_SHOUT) {
// Pass up to caller as SHOUT event
zstr_sendm (self->outbox, "SHOUT");
zstr_sendm (self->outbox, zuuid_str (uuid));
zstr_sendm (self->outbox, zyre_peer_name (peer));
zstr_sendm (self->outbox, zre_msg_group (msg));
zmsg_t *content = zmsg_dup (zre_msg_content (msg));
zmsg_send (&content, self->outbox);
}
else
if (zre_msg_id (msg) == ZRE_MSG_PING) {
zre_msg_t *msg = zre_msg_new (ZRE_MSG_PING_OK);
zyre_peer_send (peer, &msg);
}
else
if (zre_msg_id (msg) == ZRE_MSG_JOIN) {
zyre_node_join_peer_group (self, peer, zre_msg_group (msg));
assert (zre_msg_status (msg) == zyre_peer_status (peer));
}
else
if (zre_msg_id (msg) == ZRE_MSG_LEAVE) {
zyre_node_leave_peer_group (self, peer, zre_msg_group (msg));
assert (zre_msg_status (msg) == zyre_peer_status (peer));
}
zuuid_destroy (&uuid);
zre_msg_destroy (&msg);
// Activity from peer resets peer timers
zyre_peer_refresh (peer, self->evasive_timeout, self->expired_timeout);
}
static int
agent_recv_from_peer (agent_t *self)
{
// Router socket tells us the identity of this peer
zre_msg_t *msg = zre_msg_recv (self->inbox);
if (msg == NULL)
return 0; // Interrupted
char *identity = zframe_strdup (zre_msg_address (msg));
// On HELLO we may create the peer if it's unknown
// On other commands the peer must already exist
zre_peer_t *peer = (zre_peer_t *) zhash_lookup (self->peers, identity);
if (zre_msg_id (msg) == ZRE_MSG_HELLO) {
peer = s_require_peer (
self, identity, zre_msg_ipaddress (msg), zre_msg_mailbox (msg));
assert (peer);
zre_peer_ready_set (peer, true);
}
// Ignore command if peer isn't ready
if (peer == NULL || !zre_peer_ready (peer)) {
free(identity);
zre_msg_destroy (&msg);
return 0;
}
if (!zre_peer_check_message (peer, msg)) {
zclock_log ("W: [%s] lost messages from %s", self->identity, identity);
assert (false);
}
// Now process each command
if (zre_msg_id (msg) == ZRE_MSG_HELLO) {
// Join peer to listed groups
char *name = zre_msg_groups_first (msg);
while (name) {
s_join_peer_group (self, peer, name);
name = zre_msg_groups_next (msg);
}
// Hello command holds latest status of peer
zre_peer_status_set (peer, zre_msg_status (msg));
// Store peer headers for future reference
zre_peer_headers_set (peer, zre_msg_headers (msg));
// If peer is a ZRE/LOG collector, connect to it
char *collector = zre_msg_headers_string (msg, "X-ZRELOG", NULL);
if (collector)
zre_log_connect (self->log, collector);
// If peer is a FileMQ publisher, connect to it
char *publisher = zre_msg_headers_string (msg, "X-FILEMQ", NULL);
if (publisher)
fmq_client_connect (self->fmq_client, publisher);
}
else
if (zre_msg_id (msg) == ZRE_MSG_WHISPER) {
// Pass up to caller API as WHISPER event
zframe_t *cookie = zre_msg_content (msg);
zstr_sendm (self->pipe, "WHISPER");
zstr_sendm (self->pipe, identity);
zframe_send (&cookie, self->pipe, ZFRAME_REUSE); // let msg free the frame
}
else
if (zre_msg_id (msg) == ZRE_MSG_SHOUT) {
// Pass up to caller as SHOUT event
zframe_t *cookie = zre_msg_content (msg);
zstr_sendm (self->pipe, "SHOUT");
zstr_sendm (self->pipe, identity);
zstr_sendm (self->pipe, zre_msg_group (msg));
zframe_send (&cookie, self->pipe, ZFRAME_REUSE); // let msg free the frame
}
else
if (zre_msg_id (msg) == ZRE_MSG_PING) {
zre_msg_t *msg = zre_msg_new (ZRE_MSG_PING_OK);
zre_peer_send (peer, &msg);
}
else
if (zre_msg_id (msg) == ZRE_MSG_JOIN) {
s_join_peer_group (self, peer, zre_msg_group (msg));
assert (zre_msg_status (msg) == zre_peer_status (peer));
}
else
if (zre_msg_id (msg) == ZRE_MSG_LEAVE) {
s_leave_peer_group (self, peer, zre_msg_group (msg));
assert (zre_msg_status (msg) == zre_peer_status (peer));
}
free (identity);
zre_msg_destroy (&msg);
// Activity from peer resets peer timers
zre_peer_refresh (peer);
return 0;
}
int
zre_msg_test (bool verbose)
{
printf (" * zre_msg: ");
// @selftest
// Simple create/destroy test
zre_msg_t *self = zre_msg_new (0);
assert (self);
zre_msg_destroy (&self);
// Create pair of sockets we can send through
zctx_t *ctx = zctx_new ();
assert (ctx);
void *output = zsocket_new (ctx, ZMQ_DEALER);
assert (output);
zsocket_bind (output, "inproc://selftest");
void *input = zsocket_new (ctx, ZMQ_ROUTER);
assert (input);
zsocket_connect (input, "inproc://selftest");
// Encode/send/decode and verify each message type
int instance;
zre_msg_t *copy;
self = zre_msg_new (ZRE_MSG_HELLO);
// Check that _dup works on empty message
copy = zre_msg_dup (self);
assert (copy);
zre_msg_destroy (©);
zre_msg_set_sequence (self, 123);
zre_msg_set_ipaddress (self, "Life is short but Now lasts for ever");
zre_msg_set_mailbox (self, 123);
zre_msg_groups_append (self, "Name: %s", "Brutus");
zre_msg_groups_append (self, "Age: %d", 43);
zre_msg_set_status (self, 123);
zre_msg_headers_insert (self, "Name", "Brutus");
zre_msg_headers_insert (self, "Age", "%d", 43);
// Send twice from same object
zre_msg_send_again (self, output);
zre_msg_send (&self, output);
for (instance = 0; instance < 2; instance++) {
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_routing_id (self));
assert (zre_msg_sequence (self) == 123);
assert (streq (zre_msg_ipaddress (self), "Life is short but Now lasts for ever"));
assert (zre_msg_mailbox (self) == 123);
assert (zre_msg_groups_size (self) == 2);
assert (streq (zre_msg_groups_first (self), "Name: Brutus"));
assert (streq (zre_msg_groups_next (self), "Age: 43"));
assert (zre_msg_status (self) == 123);
assert (zre_msg_headers_size (self) == 2);
assert (streq (zre_msg_headers_string (self, "Name", "?"), "Brutus"));
assert (zre_msg_headers_number (self, "Age", 0) == 43);
zre_msg_destroy (&self);
}
self = zre_msg_new (ZRE_MSG_WHISPER);
// Check that _dup works on empty message
copy = zre_msg_dup (self);
assert (copy);
zre_msg_destroy (©);
zre_msg_set_sequence (self, 123);
zmsg_t *whisper_content = zmsg_new ();
zre_msg_set_content (self, &whisper_content);
zmsg_addstr (zre_msg_content (self), "Hello, World");
// Send twice from same object
zre_msg_send_again (self, output);
zre_msg_send (&self, output);
for (instance = 0; instance < 2; instance++) {
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_routing_id (self));
assert (zre_msg_sequence (self) == 123);
assert (zmsg_size (zre_msg_content (self)) == 1);
zre_msg_destroy (&self);
}
self = zre_msg_new (ZRE_MSG_SHOUT);
// Check that _dup works on empty message
copy = zre_msg_dup (self);
assert (copy);
zre_msg_destroy (©);
zre_msg_set_sequence (self, 123);
zre_msg_set_group (self, "Life is short but Now lasts for ever");
zmsg_t *shout_content = zmsg_new ();
zre_msg_set_content (self, &shout_content);
zmsg_addstr (zre_msg_content (self), "Hello, World");
// Send twice from same object
zre_msg_send_again (self, output);
zre_msg_send (&self, output);
for (instance = 0; instance < 2; instance++) {
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_routing_id (self));
assert (zre_msg_sequence (self) == 123);
assert (streq (zre_msg_group (self), "Life is short but Now lasts for ever"));
assert (zmsg_size (zre_msg_content (self)) == 1);
zre_msg_destroy (&self);
}
self = zre_msg_new (ZRE_MSG_JOIN);
// Check that _dup works on empty message
copy = zre_msg_dup (self);
assert (copy);
zre_msg_destroy (©);
zre_msg_set_sequence (self, 123);
zre_msg_set_group (self, "Life is short but Now lasts for ever");
zre_msg_set_status (self, 123);
// Send twice from same object
zre_msg_send_again (self, output);
zre_msg_send (&self, output);
for (instance = 0; instance < 2; instance++) {
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_routing_id (self));
assert (zre_msg_sequence (self) == 123);
assert (streq (zre_msg_group (self), "Life is short but Now lasts for ever"));
assert (zre_msg_status (self) == 123);
zre_msg_destroy (&self);
}
self = zre_msg_new (ZRE_MSG_LEAVE);
// Check that _dup works on empty message
copy = zre_msg_dup (self);
assert (copy);
zre_msg_destroy (©);
zre_msg_set_sequence (self, 123);
zre_msg_set_group (self, "Life is short but Now lasts for ever");
zre_msg_set_status (self, 123);
// Send twice from same object
zre_msg_send_again (self, output);
zre_msg_send (&self, output);
for (instance = 0; instance < 2; instance++) {
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_routing_id (self));
assert (zre_msg_sequence (self) == 123);
assert (streq (zre_msg_group (self), "Life is short but Now lasts for ever"));
assert (zre_msg_status (self) == 123);
zre_msg_destroy (&self);
}
self = zre_msg_new (ZRE_MSG_PING);
// Check that _dup works on empty message
copy = zre_msg_dup (self);
assert (copy);
zre_msg_destroy (©);
zre_msg_set_sequence (self, 123);
// Send twice from same object
zre_msg_send_again (self, output);
zre_msg_send (&self, output);
for (instance = 0; instance < 2; instance++) {
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_routing_id (self));
assert (zre_msg_sequence (self) == 123);
zre_msg_destroy (&self);
}
self = zre_msg_new (ZRE_MSG_PING_OK);
// Check that _dup works on empty message
copy = zre_msg_dup (self);
assert (copy);
zre_msg_destroy (©);
zre_msg_set_sequence (self, 123);
// Send twice from same object
zre_msg_send_again (self, output);
zre_msg_send (&self, output);
for (instance = 0; instance < 2; instance++) {
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_routing_id (self));
assert (zre_msg_sequence (self) == 123);
zre_msg_destroy (&self);
}
zctx_destroy (&ctx);
// @end
printf ("OK\n");
return 0;
}
int
zre_msg_test (bool verbose)
{
printf (" * zre_msg: ");
// @selftest
// Simple create/destroy test
zre_msg_t *self = zre_msg_new (0);
assert (self);
zre_msg_destroy (&self);
// Create pair of sockets we can send through
zctx_t *ctx = zctx_new ();
assert (ctx);
void *output = zsocket_new (ctx, ZMQ_DEALER);
assert (output);
zsocket_bind (output, "inproc://selftest");
void *input = zsocket_new (ctx, ZMQ_ROUTER);
assert (input);
zsocket_connect (input, "inproc://selftest");
// Encode/send/decode and verify each message type
self = zre_msg_new (ZRE_MSG_HELLO);
zre_msg_set_sequence (self, 123);
zre_msg_set_ipaddress (self, "Life is short but Now lasts for ever");
zre_msg_set_mailbox (self, 123);
zre_msg_groups_append (self, "Name: %s", "Brutus");
zre_msg_groups_append (self, "Age: %d", 43);
zre_msg_set_status (self, 123);
zre_msg_headers_insert (self, "Name", "Brutus");
zre_msg_headers_insert (self, "Age", "%d", 43);
zre_msg_send (&self, output);
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_sequence (self) == 123);
assert (streq (zre_msg_ipaddress (self), "Life is short but Now lasts for ever"));
assert (zre_msg_mailbox (self) == 123);
assert (zre_msg_groups_size (self) == 2);
assert (streq (zre_msg_groups_first (self), "Name: Brutus"));
assert (streq (zre_msg_groups_next (self), "Age: 43"));
assert (zre_msg_status (self) == 123);
assert (zre_msg_headers_size (self) == 2);
assert (streq (zre_msg_headers_string (self, "Name", "?"), "Brutus"));
assert (zre_msg_headers_number (self, "Age", 0) == 43);
zre_msg_destroy (&self);
self = zre_msg_new (ZRE_MSG_WHISPER);
zre_msg_set_sequence (self, 123);
zre_msg_set_content (self, zframe_new ("Captcha Diem", 12));
zre_msg_send (&self, output);
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_sequence (self) == 123);
assert (zframe_streq (zre_msg_content (self), "Captcha Diem"));
zre_msg_destroy (&self);
self = zre_msg_new (ZRE_MSG_SHOUT);
zre_msg_set_sequence (self, 123);
zre_msg_set_group (self, "Life is short but Now lasts for ever");
zre_msg_set_content (self, zframe_new ("Captcha Diem", 12));
zre_msg_send (&self, output);
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_sequence (self) == 123);
assert (streq (zre_msg_group (self), "Life is short but Now lasts for ever"));
assert (zframe_streq (zre_msg_content (self), "Captcha Diem"));
zre_msg_destroy (&self);
self = zre_msg_new (ZRE_MSG_JOIN);
zre_msg_set_sequence (self, 123);
zre_msg_set_group (self, "Life is short but Now lasts for ever");
zre_msg_set_status (self, 123);
zre_msg_send (&self, output);
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_sequence (self) == 123);
assert (streq (zre_msg_group (self), "Life is short but Now lasts for ever"));
assert (zre_msg_status (self) == 123);
zre_msg_destroy (&self);
self = zre_msg_new (ZRE_MSG_LEAVE);
zre_msg_set_sequence (self, 123);
zre_msg_set_group (self, "Life is short but Now lasts for ever");
zre_msg_set_status (self, 123);
zre_msg_send (&self, output);
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_sequence (self) == 123);
assert (streq (zre_msg_group (self), "Life is short but Now lasts for ever"));
assert (zre_msg_status (self) == 123);
zre_msg_destroy (&self);
self = zre_msg_new (ZRE_MSG_PING);
zre_msg_set_sequence (self, 123);
zre_msg_send (&self, output);
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_sequence (self) == 123);
zre_msg_destroy (&self);
self = zre_msg_new (ZRE_MSG_PING_OK);
zre_msg_set_sequence (self, 123);
zre_msg_send (&self, output);
self = zre_msg_recv (input);
assert (self);
assert (zre_msg_sequence (self) == 123);
zre_msg_destroy (&self);
zctx_destroy (&ctx);
// @end
printf ("OK\n");
return 0;
}