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repmgrd: better handling of missing upstream_node_id

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Ensure we default to master node.
This commit is contained in:
Ian Barwick
2016-05-11 21:47:40 +09:00
committed by Ian Barwick
parent c79933685c
commit 6db742f81e
2 changed files with 36 additions and 8 deletions
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35
dbutils.c
View File

@@ -604,7 +604,7 @@ get_upstream_connection(PGconn *standby_conn, char *cluster, int node_id,
if (PQresultStatus(res) != PGRES_TUPLES_OK)
{
log_err(_("unable to get conninfo for upstream server\n%s\n"),
log_err(_("error when attempting to find upstream server\n%s\n"),
PQerrorMessage(standby_conn));
PQclear(res);
return NULL;
@@ -612,15 +612,42 @@ get_upstream_connection(PGconn *standby_conn, char *cluster, int node_id,
if (!PQntuples(res))
{
log_notice(_("no record found for upstream server\n"));
PQclear(res);
return NULL;
log_debug("no record found for upstream server\n");
sqlquery_snprintf(sqlquery,
" SELECT un.conninfo, un.name, un.id "
" FROM %s.repl_nodes un "
" WHERE un.cluster = '%s' "
" AND un.type='master' "
" AND un.active IS TRUE",
get_repmgr_schema_quoted(standby_conn),
cluster);
res = PQexec(standby_conn, sqlquery);
if (PQresultStatus(res) != PGRES_TUPLES_OK)
{
log_err(_("error when attempting to find active master server\n%s\n"),
PQerrorMessage(standby_conn));
PQclear(res);
return NULL;
}
if (!PQntuples(res))
{
PQclear(res);
log_notice(_("no record found for active master server\n"));
return NULL;
}
log_debug("record found for active master server\n");
}
strncpy(upstream_conninfo, PQgetvalue(res, 0, 0), MAXCONNINFO);
if (upstream_node_id_ptr != NULL)
*upstream_node_id_ptr = atoi(PQgetvalue(res, 0, 1));
*upstream_node_id_ptr = atoi(PQgetvalue(res, 0, 2));
PQclear(res);

9
repmgrd.c
View File

@@ -742,7 +742,8 @@ standby_monitor(void)
upstream_conn = get_upstream_connection(my_local_conn,
local_options.cluster_name,
local_options.node,
&upstream_node_id, upstream_conninfo);
&upstream_node_id,
upstream_conninfo);
upstream_node_type = (upstream_node_id == master_options.node)
? "master"
@@ -826,7 +827,7 @@ standby_monitor(void)
* Failover handling is handled differently depending on whether
* the failed node is the master or a cascading standby
*/
upstream_node = get_node_info(my_local_conn, local_options.cluster_name, node_info.upstream_node_id);
upstream_node = get_node_info(my_local_conn, local_options.cluster_name, upstream_node_id);
if (upstream_node.type == MASTER)
{
@@ -929,7 +930,7 @@ standby_monitor(void)
* from the upstream node to write monitoring information
*/
upstream_node = get_node_info(my_local_conn, local_options.cluster_name, node_info.upstream_node_id);
upstream_node = get_node_info(my_local_conn, local_options.cluster_name, upstream_node_id);
sprintf(sqlquery,
"SELECT id "
@@ -2386,7 +2387,7 @@ get_node_info(PGconn *conn, char *cluster, int node_id)
if (res == 0)
{
log_warning(_("No record found record for node %i\n"), node_id);
log_warning(_("No record found for node %i\n"), node_id);
}
return node_info;