diff options
| author | Andres Freund | 2023-04-08 04:47:25 +0000 |
|---|---|---|
| committer | Andres Freund | 2023-04-08 04:47:25 +0000 |
| commit | 15f8203a5975d6b9b78e2c64e213ed964b50c044 (patch) | |
| tree | 09f68aba0bed426eaa8a42031583dee2a33d094c /src/include/replication | |
| parent | d4e71df6d757fd21c363164a3a4d3b5681462662 (diff) | |
Replace replication slot's invalidated_at LSN with an enum
This is mainly useful because the upcoming logical-decoding-on-standby feature
adds further reasons for invalidating slots, and we don't want to end up with
multiple invalidated_* fields, or check different attributes.
Eventually we should consider not resetting restart_lsn when invalidating a
slot due to max_slot_wal_keep_size. But that's a user visible change, so left
for later.
Increases SLOT_VERSION, due to the changed field (with a different alignment,
no less).
Reviewed-by: "Drouvot, Bertrand" <bertranddrouvot.pg@gmail.com>
Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org>
Reviewed-by: Melanie Plageman <melanieplageman@gmail.com>
Discussion: https://postgr.es/m/20230407075009.igg7be27ha2htkbt@awork3.anarazel.de
Diffstat (limited to 'src/include/replication')
| -rw-r--r-- | src/include/replication/slot.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/include/replication/slot.h b/src/include/replication/slot.h index 8872c80cdfe..34ce055dd50 100644 --- a/src/include/replication/slot.h +++ b/src/include/replication/slot.h @@ -38,6 +38,17 @@ typedef enum ReplicationSlotPersistency } ReplicationSlotPersistency; /* + * Slots can be invalidated, e.g. due to max_slot_wal_keep_size. If so, the + * 'invalidated' field is set to a value other than _NONE. + */ +typedef enum ReplicationSlotInvalidationCause +{ + RS_INVAL_NONE, + /* required WAL has been removed */ + RS_INVAL_WAL_REMOVED, +} ReplicationSlotInvalidationCause; + +/* * On-Disk data of a replication slot, preserved across restarts. */ typedef struct ReplicationSlotPersistentData @@ -72,8 +83,8 @@ typedef struct ReplicationSlotPersistentData /* oldest LSN that might be required by this replication slot */ XLogRecPtr restart_lsn; - /* restart_lsn is copied here when the slot is invalidated */ - XLogRecPtr invalidated_at; + /* RS_INVAL_NONE if valid, or the reason for having been invalidated */ + ReplicationSlotInvalidationCause invalidated; /* * Oldest LSN that the client has acked receipt for. This is used as the |