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 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;
}