int raft_recv_requestvote_response(raft_server_t* me_, int node,
msg_requestvote_response_t* r)
{
raft_server_private_t* me = (raft_server_private_t*)me_;
__log(me_, "node responded to requestvote: %d status: %s",
node, r->vote_granted == 1 ? "granted" : "not granted");
if (raft_is_leader(me_))
return 0;
assert(node < me->num_nodes);
// if (r->term != raft_get_current_term(me_))
// return 0;
if (1 == r->vote_granted)
{
me->votes_for_me[node] = 1;
int votes = raft_get_nvotes_for_me(me_);
if (raft_votes_is_majority(me->num_nodes, votes))
raft_become_leader(me_);
}
return 0;
}
/* If term > currentTerm, set currentTerm to term (step down if candidate or
* leader) */
void TestRaft_votes_are_majority_is_true(
CuTest * tc
)
{
/* 1 of 3 = lose */
CuAssertTrue(tc, 0 == raft_votes_is_majority(3, 1));
/* 2 of 3 = win */
CuAssertTrue(tc, 1 == raft_votes_is_majority(3, 2));
/* 2 of 5 = lose */
CuAssertTrue(tc, 0 == raft_votes_is_majority(5, 2));
/* 3 of 5 = win */
CuAssertTrue(tc, 1 == raft_votes_is_majority(5, 3));
/* 2 of 1?? This is an error */
CuAssertTrue(tc, 0 == raft_votes_is_majority(1, 2));
}
int raft_recv_requestvote_response(raft_server_t* me_,
raft_node_t* node,
msg_requestvote_response_t* r)
{
raft_server_private_t* me = (raft_server_private_t*)me_;
__log(me_, node, "node responded to requestvote status: %s",
r->vote_granted == 1 ? "granted" : "not granted");
if (!raft_is_candidate(me_))
{
return 0;
}
else if (raft_get_current_term(me_) < r->term)
{
raft_set_current_term(me_, r->term);
raft_become_follower(me_);
return 0;
}
else if (raft_get_current_term(me_) != r->term)
{
/* The node who voted for us would have obtained our term.
* Therefore this is an old message we should ignore.
* This happens if the network is pretty choppy. */
return 0;
}
__log(me_, node, "node responded to requestvote: %d status: %s ct:%d rt:%d",
node, r->vote_granted == 1 ? "granted" : "not granted",
me->current_term,
r->term);
if (1 == r->vote_granted)
{
if (node)
raft_node_vote_for_me(node, 1);
int votes = raft_get_nvotes_for_me(me_);
if (raft_votes_is_majority(me->num_nodes, votes))
raft_become_leader(me_);
}
return 0;
}