/* §5.2 */
static int answer_REQ_VOTE(
struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg
)
{
int valid;
struct boothc_ticket_msg omsg;
cmd_result_t inappr_reason;
int reason;
inappr_reason = test_reason(tk, sender, leader, msg);
if (inappr_reason)
return send_reject(sender, tk, inappr_reason, msg);
valid = term_time_left(tk);
reason = ntohl(msg->header.reason);
/* valid tickets are not allowed only if the sender thinks
* the ticket got lost */
if (sender != tk->leader && valid && reason != OR_STEPDOWN) {
tk_log_warn("election from %s with reason %s rejected "
"(we have %s as ticket owner), ticket still valid for %ds",
site_string(sender), state_to_string(reason),
site_string(tk->leader), valid);
return send_reject(sender, tk, RLT_TERM_STILL_VALID, msg);
}
if (term_too_low(tk, sender, leader, msg))
return 0;
/* set this, so that we know not to send status for the
* ticket */
tk->in_election = 1;
/* reset ticket's leader on not valid tickets */
if (!valid)
set_leader(tk, NULL);
/* if it's a newer term or ... */
if (newer_term(tk, sender, leader, msg, 1)) {
clear_election(tk);
goto vote_for_sender;
}
/* ... we didn't vote yet, then vote for the sender */
/* §5.2, §5.4 */
if (!tk->voted_for) {
vote_for_sender:
tk->voted_for = sender;
record_vote(tk, sender, leader);
}
init_ticket_msg(&omsg, OP_VOTE_FOR, OP_REQ_VOTE, RLT_SUCCESS, 0, tk);
omsg.ticket.leader = htonl(get_node_id(tk->voted_for));
return booth_udp_send_auth(sender, &omsg, sendmsglen(&omsg));
}
static int process_UPDATE (
struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg
)
{
if (is_owned(tk) && sender != tk->leader) {
tk_log_warn("different leader %s wants to update "
"our ticket, sending reject",
site_string(leader));
return send_reject(sender, tk, RLT_TERM_OUTDATED, msg);
}
tk_log_debug("leader %s wants to update our ticket",
site_string(leader));
become_follower(tk, msg);
set_leader(tk, leader);
ticket_write(tk);
/* run ticket_cron if the ticket expires */
set_ticket_wakeup(tk);
return send_msg(OP_ACK, tk, sender, msg);
}
static int process_REVOKE (
struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg
)
{
int rv;
if (tk->state == ST_INIT && tk->leader == no_leader) {
/* assume that our ack got lost */
rv = send_msg(OP_ACK, tk, sender, msg);
} else if (tk->leader != sender) {
tk_log_error("%s wants to revoke ticket, "
"but it is not granted there (ignoring)",
site_string(sender));
return 1;
} else if (tk->state != ST_FOLLOWER) {
tk_log_error("unexpected ticket revoke from %s "
"(in state %s) (ignoring)",
site_string(sender),
state_to_string(tk->state));
return 1;
} else {
tk_log_info("%s revokes ticket",
site_string(tk->leader));
save_committed_tkt(tk);
reset_ticket(tk);
set_leader(tk, no_leader);
ticket_write(tk);
rv = send_msg(OP_ACK, tk, sender, msg);
}
return rv;
}
static int newer_term(struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg,
int in_election)
{
uint32_t term;
/* it may happen that we hear about our newer term */
if (leader == local)
return 0;
term = ntohl(msg->ticket.term);
/* §5.1 */
if (term > tk->current_term) {
set_state(tk, ST_FOLLOWER);
if (!in_election) {
set_leader(tk, leader);
tk_log_info("from %s: higher term %d vs. %d, following %s",
site_string(sender),
term, tk->current_term,
ticket_leader_string(tk));
} else {
tk_log_debug("from %s: higher term %d vs. %d (election)",
site_string(sender),
term, tk->current_term);
}
tk->current_term = term;
return 1;
}
return 0;
}
void init()
{
// clean up all trash
object room;
int i;
object *inv;
dest_trash();
room = environment(this_object());
if(room)
{
inv = all_inventory(room);
for(i=0; i<sizeof(inv); i++) {
if( userp( inv[i]) )
{
if ( !random(5))
set_leader(inv[i]);
continue;
}
if( inv[i]->query("no_shown")) continue;
if( inv[i]->query("no_get")) continue;
if( inv[i]->is_character()) continue;
if( inv[i]->is_corpse()) continue;
command("get "+ inv[i]->query("id"));
}
}
}
int chase_him(object me)
{
message_vision("$N��$n�ȵ�������͵�����̵���ɲ�ƣ�������\n",this_object(),me);
set_leader(me);
kill_ob(me);
me->kill_ob(this_object());
return 1;
}
int accept_object(object who, object ob)
{
if( ob->id("bone") ) {
set_leader(who);
message("vision", name() + "╦ъпк╣ьмТмТ╫пакфПю╢║ё\n", environment());
return 1;
}
}
int accept_object(object who, object ob)
{
if( ob->id("bone") ) {
set_leader(who);
message("vision", name() + "高兴地汪汪叫了起来。\n", environment());
return 1;
}
}
void animate(object who, int level)
{
set("possessed", who);
set_leader(who);
set_skill("unarmed", 40+random(level/2));
set_skill("dodge", 30+random(level/2));
set_skill("move", 30+random(level/2));
set("combat_exp", random(level*level*level));
}
static void start_revoke_ticket(struct ticket_config *tk)
{
tk_log_info("revoking ticket");
save_committed_tkt(tk);
reset_ticket(tk);
set_leader(tk, no_leader);
ticket_write(tk);
ticket_broadcast(tk, OP_REVOKE, OP_ACK, RLT_SUCCESS, OR_ADMIN);
}
int accept_kill(object me)
{
command("say 原来你是恶贼，今天我为民除害。\n");
if (present("chongyang jian", this_object())){
command("wield chongyang jian");
}
set_leader(me);
kill_ob(me);
return 1;
}
static int pcmk_load_ticket(struct ticket_config *tk)
{
char cmd[COMMAND_MAX];
int rv = 0, pipe_rv;
FILE *p;
/* This here gets run during startup; testing that here means that
* normal operation won't be interrupted with that test. */
test_atomicity();
snprintf(cmd, COMMAND_MAX,
"crm_ticket -t '%s' -q",
tk->name);
p = popen(cmd, "r");
if (p == NULL) {
pipe_rv = errno;
log_error("popen error %d (%s) for \"%s\"",
pipe_rv, strerror(pipe_rv), cmd);
return pipe_rv || -EINVAL;
}
rv = parse_ticket_state(tk, p);
if (!tk->leader) {
/* Hmm, no site found for the ticket we have in the
* CIB!?
* Assume that the ticket belonged to us if it was
* granted here!
*/
log_warn("%s: no site matches; site got reconfigured?",
tk->name);
if (tk->is_granted) {
log_warn("%s: granted here, assume it belonged to us",
tk->name);
set_leader(tk, local);
}
}
pipe_rv = pclose(p);
if (!pipe_rv) {
log_debug("command \"%s\"", cmd);
} else if (WEXITSTATUS(pipe_rv) == 6) {
log_info("command \"%s\", ticket not found", cmd);
} else {
log_error("command \"%s\" %s", cmd, interpret_rv(pipe_rv));
}
return rv | pipe_rv;
}
void invocation(object who, int level)
{
int i;
object *enemy;
message("vision",
name() + "ъз╣ьр╩иЫ╢закЁЖю╢ё║\n" NOR,
environment(), this_object() );
enemy = who->query_enemy();
i = sizeof(enemy);
while(i--) {
if( enemy[i] && living(enemy[i]) ) {
kill_ob(enemy[i]);
if( userp(enemy[i]) ) enemy[i]->fight_ob(this_object());
else enemy[i]->kill_ob(this_object());
}
}
set_leader(who);
set("possessed",who);
}
static void won_elections(struct ticket_config *tk)
{
set_leader(tk, local);
set_state(tk, ST_LEADER);
set_ticket_expiry(tk, tk->term_duration);
time_reset(&tk->election_end);
tk->voted_for = NULL;
if (is_time_set(&tk->delay_commit) && all_sites_replied(tk)) {
time_reset(&tk->delay_commit);
tk_log_debug("reset delay commit as all sites replied");
}
save_committed_tkt(tk);
ticket_broadcast(tk, OP_HEARTBEAT, OP_ACK, RLT_SUCCESS, 0);
tk->ticket_updated = 0;
}
void init()
{
object ob;
::init();
if( interactive(ob = this_player()) && !is_fighting() ) {
if ((string)ob->query("family/family_name")!="���ظ�") {
if (random((int)ob->query("age")) > 20 ){
command("tell " + ob->query("id") + " ����ү����������Ļ꣬��ȴ�Լ����������������߰ɣ�\n");
kill_ob(ob);
set_leader(ob);
return;
}
return;
}
return;
}
return;
}
void init()
{
object ob;
::init();
if( interactive(ob = this_player()) && !is_fighting() ) {
if ((string)ob->query("family/family_name")!="阎罗地府") {
if (random((int)ob->query("age")) > 20 ){
command("tell " + ob->query("id") + " 阎王爷叫我来勾你的魂，你却自己送上门来，跟我走吧！\n");
kill_ob(ob);
set_leader(ob);
return;
}
return;
}
return;
}
return;
}
/* For follower. */
static int answer_HEARTBEAT (
struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg
)
{
uint32_t term;
term = ntohl(msg->ticket.term);
tk_log_debug("heartbeat from leader: %s, have %s; term %d vs %d",
site_string(leader), ticket_leader_string(tk),
term, tk->current_term);
if (term < tk->current_term) {
if (sender == tk->leader) {
tk_log_info("trusting leader %s with a lower term (%d vs %d)",
site_string(leader), term, tk->current_term);
} else if (is_owned(tk)) {
tk_log_warn("different leader %s with a lower term "
"(%d vs %d), sending reject",
site_string(leader), term, tk->current_term);
return send_reject(sender, tk, RLT_TERM_OUTDATED, msg);
}
}
/* got heartbeat, no rejects expected anymore */
tk->expect_more_rejects = 0;
/* Needed? */
newer_term(tk, sender, leader, msg, 0);
become_follower(tk, msg);
/* Racy??? */
assert(sender == leader || !leader);
set_leader(tk, leader);
/* Ack the heartbeat (we comply). */
return send_msg(OP_ACK, tk, sender, msg);
}
void animate(object who, int time)
{
set("possessed", who);
set_leader(who);
}
void disown_ticket(struct ticket_config *tk)
{
set_leader(tk, NULL);
tk->is_granted = 0;
get_time(&tk->term_expires);
}
DSN_API void dsn_group_set_leader(dsn_group_t g, dsn_address_t ep)
{
auto grp = (::dsn::rpc_group_address*)(g);
::dsn::rpc_address addr(ep);
grp->set_leader(addr);
}
/* reply to STATUS */
static int process_MY_INDEX (
struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg
)
{
int i;
int expired;
expired = !msg_term_time(msg);
/* test against the last valid(!) ticket we have */
i = my_last_term(tk) - ntohl(msg->ticket.term);
if (i > 0) {
/* let them know about our newer ticket */
send_msg(OP_MY_INDEX, tk, sender, msg);
if (tk->state == ST_LEADER) {
tk_log_info("sending ticket update to %s",
site_string(sender));
return send_msg(OP_UPDATE, tk, sender, msg);
}
}
/* we have a newer or equal ticket and theirs is expired,
* nothing more to do here */
if (i >= 0 && expired) {
return 0;
}
if (tk->state == ST_LEADER) {
/* we're the leader, thread carefully */
if (expired) {
/* if their ticket is expired,
* nothing more to do */
return 0;
}
if (i < 0) {
/* they have a newer ticket, trouble if we're already leader
* for it */
tk_log_warn("from %s: more up to date ticket at %s",
site_string(sender),
site_string(leader)
);
return leader_handle_newer_ticket(tk, sender, leader, msg);
} else {
/* we have the ticket and we don't care */
return 0;
}
} else if (tk->state == ST_CANDIDATE) {
if (leader == local) {
/* a belated MY_INDEX, we're already trying to get the
* ticket */
return 0;
}
}
/* their ticket is either newer or not expired, don't
* ignore it */
update_ticket_from_msg(tk, sender, msg);
set_leader(tk, leader);
update_ticket_state(tk, sender);
save_committed_tkt(tk);
set_ticket_wakeup(tk);
return 0;
}
static int process_REJECTED(
struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg
)
{
uint32_t rv;
rv = ntohl(msg->header.result);
if (tk->state == ST_CANDIDATE &&
leader == local) {
/* the sender has us as the leader (!)
* the elections will time out, then we can try again
*/
tk_log_warn("ticket was granted to us "
"(and we didn't know)");
tk->expect_more_rejects = 1;
return 0;
}
if (tk->state == ST_CANDIDATE &&
rv == RLT_TERM_OUTDATED) {
tk_log_warn("ticket outdated (term %d), granted to %s",
ntohl(msg->ticket.term),
site_string(leader)
);
set_leader(tk, leader);
tk->expect_more_rejects = 1;
become_follower(tk, msg);
return 0;
}
if (tk->state == ST_CANDIDATE &&
rv == RLT_TERM_STILL_VALID) {
if (tk->lost_leader == leader) {
if (tk->election_reason == OR_TKT_LOST) {
tk_log_warn("%s still has the ticket valid, "
"we'll backup a bit",
site_string(sender));
} else {
tk_log_warn("%s unexpectedly rejects elections",
site_string(sender));
}
} else {
tk_log_warn("ticket was granted to %s "
"(and we didn't know)",
site_string(leader));
}
set_leader(tk, leader);
become_follower(tk, msg);
tk->expect_more_rejects = 1;
return 0;
}
if (tk->state == ST_CANDIDATE &&
rv == RLT_YOU_OUTDATED) {
set_leader(tk, leader);
tk->expect_more_rejects = 1;
if (leader && leader != no_leader) {
tk_log_warn("our ticket is outdated, granted to %s",
site_string(leader));
become_follower(tk, msg);
} else {
tk_log_warn("our ticket is outdated and revoked");
update_ticket_from_msg(tk, sender, msg);
set_state(tk, ST_INIT);
}
return 0;
}
if (!tk->expect_more_rejects) {
tk_log_warn("from %s: in state %s, got %s (unexpected reject)",
site_string(sender),
state_to_string(tk->state),
state_to_string(rv));
}
return 0;
}
