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Function to update node records

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This commit is contained in:
Ian Barwick
2015-01-16 14:14:04 +09:00
parent 609453a848
commit c413cff461
2 changed files with 30 additions and 6 deletions
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1
repmgr.c
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@@ -2173,6 +2173,7 @@ create_schema(PGconn *conn)
}
PQclear(res);
// ZZZ no longer needed
sqlquery_snprintf(sqlquery,
"CREATE OR REPLACE FUNCTION %s.repmgr_get_primary_conninfo() "
" RETURNS text "

35
repmgrd.c
View File

@@ -90,6 +90,7 @@ static void check_node_configuration(void);
static void standby_monitor(void);
static void witness_monitor(void);
static bool check_connection(PGconn *conn, const char *type);
static void update_node_record_set_primary(PGconn *conn, int this_node_id, int old_primary_node_id);
static void update_shared_memory(char *last_wal_standby_applied);
static void update_registration(void);
static void do_failover(void);
@@ -409,6 +410,7 @@ main(int argc, char **argv)
check_cluster_configuration(my_local_conn);
check_node_configuration();
// ZZZ check if this is needed, and why
if (0 && reload_config(config_file, &local_options))
{
PQfinish(my_local_conn);
@@ -871,14 +873,17 @@ do_failover(void)
*/
t_node_info nodes[FAILOVER_NODES_MAX_CHECK];
/* Store details of the failed node here */
t_node_info failed_primary = {-1, NO_UPSTREAM_NODE, "", InvalidXLogRecPtr, UNKNOWN, false, false};
/* initialize to keep compiler quiet */
t_node_info best_candidate = {-1, NO_UPSTREAM_NODE, "", InvalidXLogRecPtr, UNKNOWN, false, false};
/* get a list of standby nodes, including myself */
sprintf(sqlquery,
"SELECT id, conninfo, type, upstream_node_id "
" FROM %s.repl_nodes "
" WHERE cluster = '%s' "
" AND active IS TRUE "
" ORDER BY priority, id "
" LIMIT %i ",
get_repmgr_schema_quoted(my_local_conn),
@@ -913,6 +918,10 @@ do_failover(void)
if(strcmp(PQgetvalue(res, i, 2), "primary") == 0)
{
nodes[i].type = PRIMARY;
failed_primary.node_id = nodes[i].node_id;
failed_primary.xlog_location = nodes[i].xlog_location;
failed_primary.is_ready = nodes[i].is_ready;
}
else if(strcmp(PQgetvalue(res, i, 2), "standby") == 0)
{
@@ -993,7 +1002,6 @@ do_failover(void)
if (nodes[i].upstream_node_id != node_info.upstream_node_id)
continue;
node_conn = establish_db_connection(nodes[i].conninfo_str, false);
/*
@@ -1223,7 +1231,7 @@ do_failover(void)
terminate(ERR_FAILOVER_FAIL);
}
/* once we know who is the best candidate, promote it */
/* if local node is the best candidate, promote it */
if (best_candidate.node_id == local_options.node)
{
/* wait */
@@ -1247,6 +1255,12 @@ do_failover(void)
progname);
terminate(ERR_BAD_CONFIG);
}
/* and reconnect to the local database */
my_local_conn = establish_db_connection(local_options.conninfo, true);
// ZZZ update master record, this node record
update_node_record_set_primary(my_local_conn, node_info.node_id, failed_primary.node_id);
}
else
{
@@ -1274,14 +1288,16 @@ do_failover(void)
progname);
terminate(ERR_BAD_CONFIG);
}
/* and reconnect to the local database */
my_local_conn = establish_db_connection(local_options.conninfo, true);
}
log_debug("failover done\n");
log_debug("failover done\n"); // ZZZ
/* to force it to re-calculate mode and master node */
failover_done = true;
/* and reconnect to the local database */
my_local_conn = establish_db_connection(local_options.conninfo, true);
}
@@ -1766,3 +1782,10 @@ get_node_info(PGconn *conn,char *cluster, int node_id)
return node_info;
}
static void
update_node_record_set_primary(PGconn *conn, int this_node_id, int old_primary_node_id)
{
log_debug("this: %i failed: %i\n", this_node_id, old_primary_node_id);
}