//Initialize timers
static int
init_pro_fd_events() {
// Send buffer for sending alive pings
to_oracle = udp_sendbuf_new(PAXOS_PINGS_NET);
if(to_oracle == NULL) {
printf("Error creating proposer->oracle network sender\n");
return PROPOSER_ERROR;
}
// Message receive event (from oracle)
from_oracle = udp_receiver_new(PAXOS_ORACLE_NET);
if (from_oracle == NULL) {
printf("Error creating oracle->proposer network receiver\n");
return PROPOSER_ERROR;
}
event_set(&oracle_msg_event, from_oracle->sock, EV_READ|EV_PERSIST, pro_handle_oracle_msg, NULL);
event_add(&oracle_msg_event, NULL);
//Set timer for sending alive pings
evtimer_set(&fe_ping_event, pro_ping_failure_detector, NULL);
evutil_timerclear(&fe_ping_interval);
fe_ping_interval.tv_sec = (FAILURE_DETECTOR_PING_INTERVAL / 1000000);
fe_ping_interval.tv_usec = (FAILURE_DETECTOR_PING_INTERVAL % 1000000);
//Send the first alive ping
pro_ping_failure_detector(0, 0, NULL);
return 0;
}
//Initialize sockets and related events
static int
init_pro_network() {
// Send buffer for talking to acceptors
to_acceptors = udp_sendbuf_new(PAXOS_ACCEPTORS_NET);
if(to_acceptors == NULL) {
printf("Error creating proposer->acceptors network sender\n");
return PROPOSER_ERROR;
}
// Message receive event
for_proposer = udp_receiver_new(PAXOS_PROPOSERS_NET);
if (for_proposer == NULL) {
printf("Error creating proposer network receiver\n");
return PROPOSER_ERROR;
}
event_set(&proposer_msg_event, for_proposer->sock, EV_READ|EV_PERSIST, pro_handle_newmsg, NULL);
event_add(&proposer_msg_event, NULL);
return 0;
}
int main (int argc, char const *argv[])
{
argc = argc;
argv = argv;
//Init oracle sender and receiver
to_proposers = udp_sendbuf_new(PAXOS_ORACLE_NET);
if(to_proposers == NULL) {
printf("Error creating oracle->proposers network sender\n");
return -1;
}
for_oracle = udp_receiver_blocking_new(PAXOS_PINGS_NET);
if (for_oracle == NULL) {
printf("Error creating proposers->oracle network receiver\n");
return -1;
}
init_oracle_state();
oracle_lock();
// Starts 3 threads sharing a global lock
//Thread 1: periodically send current leader
pthread_create(&announce_thread, NULL, broadcast_current_leader, NULL);
//Thread 2: Receive alive_ping from proposers
pthread_create(&get_pings_thread, NULL, get_proposer_pings, NULL);
//Thread 3: Ask the user to force a particular leader
pthread_create(&user_input_thread, NULL, get_user_input, NULL);
oracle_unlock();
while(1) {
sleep(10);
}
return 0;
}
