/* there is deliberately not an #ifndef RMGRLIST_H here */

/*
 * List of resource manager entries.  Note that order of entries defines the
 * numerical values of each rmgr's ID, which is stored in WAL records.  New
 * entries should be added at the end, to avoid changing IDs of existing
 * entries.
 *
 * Changes to this list possibly need an XLOG_PAGE_MAGIC bump.
 */

/* symbol name, textual name, redo, desc, identify, startup, cleanup, mask, decode */
PG_RMGR(RM_XLOG_ID, "XLOG", xlog_redo, xlog_desc, xlog_identify, NULL, NULL, NULL, xlog_decode)
PG_RMGR(RM_XACT_ID, "Transaction", xact_redo, xact_desc, xact_identify, NULL, NULL, NULL, xact_decode)
PG_RMGR(RM_SMGR_ID, "Storage", smgr_redo, smgr_desc, smgr_identify, NULL, NULL, NULL, NULL)
PG_RMGR(RM_CLOG_ID, "CLOG", clog_redo, clog_desc, clog_identify, NULL, NULL, NULL, NULL)
PG_RMGR(RM_DBASE_ID, "Database", dbase_redo, dbase_desc, dbase_identify, NULL, NULL, NULL, NULL)
PG_RMGR(RM_TBLSPC_ID, "Tablespace", tblspc_redo, tblspc_desc, tblspc_identify, NULL, NULL, NULL, NULL)
PG_RMGR(RM_MULTIXACT_ID, "MultiXact", multixact_redo, multixact_desc, multixact_identify, NULL, NULL, NULL, NULL)
PG_RMGR(RM_RELMAP_ID, "RelMap", relmap_redo, relmap_desc, relmap_identify, NULL, NULL, NULL, NULL)
PG_RMGR(RM_STANDBY_ID, "Standby", standby_redo, standby_desc, standby_identify, NULL, NULL, NULL, standby_decode)
PG_RMGR(RM_HEAP2_ID, "Heap2", heap2_redo, heap2_desc, heap2_identify, NULL, NULL, heap_mask, heap2_decode)
PG_RMGR(RM_HEAP_ID, "Heap", heap_redo, heap_desc, heap_identify, NULL, NULL, heap_mask, heap_decode)
PG_RMGR(RM_BTREE_ID, "Btree", btree_redo, btree_desc, btree_identify, btree_xlog_startup, btree_xlog_cleanup, btree_mask, NULL)
PG_RMGR(RM_HASH_ID, "Hash", hash_redo, hash_desc, hash_identify, NULL, NULL, hash_mask, NULL)
PG_RMGR(RM_GIN_ID, "Gin", gin_redo, gin_desc, gin_identify, gin_xlog_startup, gin_xlog_cleanup, gin_mask, NULL)
PG_RMGR(RM_GIST_ID, "Gist", gist_redo, gist_desc, gist_identify, gist_xlog_startup, gist_xlog_cleanup, gist_mask, NULL)
PG_RMGR(RM_SEQ_ID, "Sequence", seq_redo, seq_desc, seq_identify, NULL, NULL, seq_mask, NULL)
PG_RMGR(RM_SPGIST_ID, "SPGist", spg_redo, spg_desc, spg_identify, spg_xlog_startup, spg_xlog_cleanup, spg_mask, NULL)
PG_RMGR(RM_BRIN_ID, "BRIN", brin_redo, brin_desc, brin_identify, NULL, NULL, brin_mask, NULL)
PG_RMGR(RM_COMMIT_TS_ID, "CommitTs", commit_ts_redo, commit_ts_desc, commit_ts_identify, NULL, NULL, NULL, NULL)
PG_RMGR(RM_REPLORIGIN_ID, "ReplicationOrigin", replorigin_redo, replorigin_desc, replorigin_identify, NULL, NULL, NULL, NULL)
PG_RMGR(RM_GENERIC_ID, "Generic", generic_redo, generic_desc, generic_identify, NULL, NULL, generic_mask, NULL)
PG_RMGR(RM_LOGICALMSG_ID, "LogicalMessage", logicalmsg_redo, logicalmsg_desc, logicalmsg_identify, NULL, NULL, NULL, logicalmsg_decode)

/* these variables are GUC parameters related to XLOG */
extern PGDLLIMPORT int wal_segment_size;
extern PGDLLIMPORT int min_wal_size_mb;
extern PGDLLIMPORT int max_wal_size_mb;
extern PGDLLIMPORT int wal_keep_size_mb;
extern PGDLLIMPORT int max_slot_wal_keep_size_mb;
extern PGDLLIMPORT int XLOGbuffers;
extern PGDLLIMPORT int XLogArchiveTimeout;
extern PGDLLIMPORT int wal_retrieve_retry_interval;
extern PGDLLIMPORT char *XLogArchiveCommand;
extern PGDLLIMPORT bool EnableHotStandby;
extern PGDLLIMPORT bool fullPageWrites;
extern PGDLLIMPORT bool wal_log_hints;
extern PGDLLIMPORT int wal_compression;
extern PGDLLIMPORT bool wal_init_zero;
extern PGDLLIMPORT bool wal_recycle;
extern PGDLLIMPORT bool *wal_consistency_checking;
extern PGDLLIMPORT char *wal_consistency_checking_string;
extern PGDLLIMPORT bool log_checkpoints;
extern PGDLLIMPORT int CommitDelay;
extern PGDLLIMPORT int CommitSiblings;
extern PGDLLIMPORT bool track_wal_io_timing;
extern PGDLLIMPORT int wal_decode_buffer_size;

/* Archive modes */
typedef enum ArchiveMode
{
  ARCHIVE_MODE_OFF = 0,    /* disabled */
  ARCHIVE_MODE_ON,      /* enabled while server is running normally */
  ARCHIVE_MODE_ALWAYS,    /* enabled always (even during recovery) */
} ArchiveMode;
extern PGDLLIMPORT int XLogArchiveMode;

/* WAL levels */
typedef enum WalLevel
{
  WAL_LEVEL_MINIMAL = 0,
  WAL_LEVEL_REPLICA,
  WAL_LEVEL_LOGICAL,
} WalLevel;

/* Compression algorithms for WAL */
typedef enum WalCompression
{
  WAL_COMPRESSION_NONE = 0,
  WAL_COMPRESSION_PGLZ,
  WAL_COMPRESSION_LZ4,
  WAL_COMPRESSION_ZSTD,
} WalCompression;

/* Recovery states */
typedef enum RecoveryState
{
  RECOVERY_STATE_CRASH = 0,  /* crash recovery */
  RECOVERY_STATE_ARCHIVE,    /* archive recovery */
  RECOVERY_STATE_DONE,    /* currently in production */
} RecoveryState;

extern PGDLLIMPORT int wal_level;
extern PGDLLIMPORT bool XLogLogicalInfo;

/* File path names (all relative to $PGDATA) */
#define RECOVERY_SIGNAL_FILE  "recovery.signal"
#define STANDBY_SIGNAL_FILE    "standby.signal"
#define BACKUP_LABEL_FILE    "backup_label"
#define BACKUP_LABEL_OLD    "backup_label.old"

#define TABLESPACE_MAP      "tablespace_map"
#define TABLESPACE_MAP_OLD    "tablespace_map.old"

/* files to signal promotion to primary */
#define PROMOTE_SIGNAL_FILE    "promote"

View Name  Description
pg_stat_activity  One row per server process, showing information related to the current activity of that process, such as state and current query. See pg_stat_activity for details.
pg_stat_replication  One row per WAL sender process, showing statistics about replication to that sender's connected standby server. See pg_stat_replication for details.
pg_stat_wal_receiver  Only one row, showing statistics about the WAL receiver from that receiver's connected server. See pg_stat_wal_receiver for details.
pg_stat_recovery_prefetch  Only one row, showing statistics about blocks prefetched during recovery. See pg_stat_recovery_prefetch for details.
pg_stat_subscription  At least one row per subscription, showing information about the subscription workers. See pg_stat_subscription for details.
pg_stat_ssl  One row per connection (regular and replication), showing information about SSL used on this connection. See pg_stat_ssl for details.
pg_stat_gssapi  One row per connection (regular and replication), showing information about GSSAPI authentication and encryption used on this connection. See pg_stat_gssapi for details.
pg_stat_progress_analyze  One row for each backend (including autovacuum worker processes) running ANALYZE, showing current progress. See Section 27.4.1.
pg_stat_progress_create_index  One row for each backend running CREATE INDEX or REINDEX, showing current progress. See Section 27.4.4.
pg_stat_progress_vacuum  One row for each backend (including autovacuum worker processes) running VACUUM, showing current progress. See Section 27.4.5.
pg_stat_progress_cluster  One row for each backend running CLUSTER or VACUUM FULL, showing current progress. See Section 27.4.2.
pg_stat_progress_basebackup  One row for each WAL sender process streaming a base backup, showing current progress. See Section 27.4.6.
pg_stat_progress_copy  One row for each backend running COPY, showing current progress. See Section 27.4.3.