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repmgrd: add option "connection_check_type"

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This enable selection of the method repmgrd uses to check whether the upstream
node is available. Possible values are:

 - "ping" (default): uses PQping() to check server availability
 - "connection":  executes a query on the connection to check server
   availability (similar to repmgr3.x).
This commit is contained in:
Ian Barwick
2019-03-06 12:07:30 +09:00
parent 4f83111033
commit 63f7ad546e
11 changed files with 150 additions and 23 deletions
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26
configfile.c
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@@ -358,6 +358,7 @@ _parse_config(t_configuration_options *options, ItemList *error_list, ItemList *
options->primary_notification_timeout = DEFAULT_PRIMARY_NOTIFICATION_TIMEOUT;
options->repmgrd_standby_startup_timeout = -1; /* defaults to "standby_reconnect_timeout" if not set */
memset(options->repmgrd_pid_file, 0, sizeof(options->repmgrd_pid_file));
options->connection_check_type = CHECK_PING;
/*-------------
* witness settings
@@ -618,6 +619,22 @@ _parse_config(t_configuration_options *options, ItemList *error_list, ItemList *
options->repmgrd_standby_startup_timeout = repmgr_atoi(value, name, error_list, 0);
else if (strcmp(name, "repmgrd_pid_file") == 0)
strncpy(options->repmgrd_pid_file, value, MAXPGPATH);
else if (strcmp(name, "connection_check_type") == 0)
{
if (strcasecmp(value, "ping") == 0)
{
options->connection_check_type = CHECK_PING;
}
else if (strcasecmp(value, "connection") == 0)
{
options->connection_check_type = CHECK_CONNECTION;
}
else
{
item_list_append(error_list,
_("value for \"connection_check_type\" must be \"ping\" or \"connect\"\n"));
}
}
/* witness settings */
else if (strcmp(name, "witness_sync_interval") == 0)
@@ -1155,7 +1172,6 @@ reload_config(t_configuration_options *orig_options, t_server_type server_type)
return false;
}
/*
* No configuration problems detected - copy any changed values
*
@@ -1330,6 +1346,14 @@ reload_config(t_configuration_options *orig_options, t_server_type server_type)
config_changed = true;
}
if (orig_options->connection_check_type != new_options.connection_check_type)
{
orig_options->connection_check_type = new_options.connection_check_type;
log_info(_("\"connection_check_type\" is now \"%s\""),
new_options.connection_check_type == CHECK_PING ? "ping" : "connection");
config_changed = true;
}
/*
* Handle changes to logging configuration
*/