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Check for WAL receiver start up

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This commit is contained in:
Ian Barwick
2019-03-04 10:53:20 +09:00
parent f85b4cd98e
commit 13c650fa83
1 changed files with 30 additions and 3 deletions
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33
sysutils.c
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@@ -262,15 +262,22 @@ enable_wal_receiver(PGconn *conn)
int wal_retrieve_retry_interval;
pid_t wal_receiver_pid = UNKNOWN_PID;
/* make timeout configurable */
int i, timeout = 30;
if (is_superuser_connection(conn, NULL) == false)
{
log_error(_("superuser connection required"));
return UNKNOWN_PID;
}
get_pg_setting(conn, "wal_retrieve_retry_interval", buf);
if (get_pg_setting(conn, "wal_retrieve_retry_interval", buf) == false)
{
log_error(_("unable to retrieve \"wal_retrieve_retry_interval\""));
return UNKNOWN_PID;
}
// XXX handle error
/* TODO: potentially handle atoi error, though unlikely at this point */
wal_retrieve_retry_interval = atoi(buf);
if (wal_retrieve_retry_interval > WALRECEIVER_DISABLE_TIMEOUT_VALUE)
@@ -292,8 +299,28 @@ enable_wal_receiver(PGconn *conn)
wal_retrieve_retry_interval);
}
for (i = 0; i < timeout; i++)
{
wal_receiver_pid = (pid_t)get_wal_receiver_pid(conn);
// XXX get wal receiver PID
if (wal_receiver_pid > 0)
break;
log_info(_("sleeping %i of maximum %i seconds waiting for WAL receiver to start up"),
i + 1, timeout)
sleep(1);
}
if (wal_receiver_pid == UNKNOWN_PID)
{
log_warning(_("unable to retrieve WAL receiver PID"));
return UNKNOWN_PID;
}
else if (wal_receiver_pid == 0)
{
log_error(_("WAL receiver did not start up after %i seconds"), timeout);
return UNKNOWN_PID;
}
return wal_receiver_pid;
}