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Add general check function "check_replication_slots_available()"

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Make the code previously only used by "standby follow" generally
available - we'll want to use this from "node rejoin" as well.

While we're at it, when reporting failure due to lack of free
replication slots, report the current value of "max_replication_slots".
This commit is contained in:
Ian Barwick
2020-02-03 16:42:04 +09:00
parent ab9c84c655
commit cd7f36a6fd
6 changed files with 48 additions and 25 deletions
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dbutils.h
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@@ -523,7 +523,7 @@ bool drop_replication_slot_sql(PGconn *conn, char *slot_name);
bool drop_replication_slot_replprot(PGconn *repl_conn, char *slot_name);
RecordStatus get_slot_record(PGconn *conn, char *slot_name, t_replication_slot *record);
int get_free_replication_slot_count(PGconn *conn);
int get_free_replication_slot_count(PGconn *conn, int *max_replication_slots);
int get_inactive_replication_slots(PGconn *conn, KeyValueList *list);
/* tablespace functions */