/*
* Handle rmgr XLOG_ID records for DecodeRecordIntoReorderBuffer().
*/
static void
DecodeXLogOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
{
SnapBuild *builder = ctx->snapshot_builder;
uint8 info = XLogRecGetInfo(buf->record) & ~XLR_INFO_MASK;
switch (info)
{
/* this is also used in END_OF_RECOVERY checkpoints */
case XLOG_CHECKPOINT_SHUTDOWN:
case XLOG_END_OF_RECOVERY:
SnapBuildSerializationPoint(builder, buf->origptr);
break;
case XLOG_CHECKPOINT_ONLINE:
/*
* a RUNNING_XACTS record will have been logged near to this, we
* can restart from there.
*/
break;
case XLOG_NOOP:
case XLOG_NEXTOID:
case XLOG_SWITCH:
case XLOG_BACKUP_END:
case XLOG_PARAMETER_CHANGE:
case XLOG_RESTORE_POINT:
case XLOG_FPW_CHANGE:
case XLOG_FPI_FOR_HINT:
case XLOG_FPI:
break;
default:
elog(ERROR, "unexpected RM_XLOG_ID record type: %u", info);
}
}
void
brin_redo(XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
switch (info & XLOG_BRIN_OPMASK)
{
case XLOG_BRIN_CREATE_INDEX:
brin_xlog_createidx(record);
break;
case XLOG_BRIN_INSERT:
brin_xlog_insert(record);
break;
case XLOG_BRIN_UPDATE:
brin_xlog_update(record);
break;
case XLOG_BRIN_SAMEPAGE_UPDATE:
brin_xlog_samepage_update(record);
break;
case XLOG_BRIN_REVMAP_EXTEND:
brin_xlog_revmap_extend(record);
break;
case XLOG_BRIN_DESUMMARIZE:
brin_xlog_desummarize_page(record);
break;
default:
elog(PANIC, "brin_redo: unknown op code %u", info);
}
}
void
gist_redo(XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
MemoryContext oldCxt;
/*
* GiST indexes do not require any conflict processing. NB: If we ever
* implement a similar optimization we have in b-tree, and remove killed
* tuples outside VACUUM, we'll need to handle that here.
*/
oldCxt = MemoryContextSwitchTo(opCtx);
switch (info)
{
case XLOG_GIST_PAGE_UPDATE:
gistRedoPageUpdateRecord(record);
break;
case XLOG_GIST_PAGE_SPLIT:
gistRedoPageSplitRecord(record);
break;
case XLOG_GIST_CREATE_INDEX:
gistRedoCreateIndex(record);
break;
default:
elog(PANIC, "gist_redo: unknown op code %u", info);
}
MemoryContextSwitchTo(oldCxt);
MemoryContextReset(opCtx);
}
void
standby_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == XLOG_STANDBY_LOCK)
{
xl_standby_locks *xlrec = (xl_standby_locks *) rec;
int i;
for (i = 0; i < xlrec->nlocks; i++)
appendStringInfo(buf, "xid %u db %u rel %u ",
xlrec->locks[i].xid, xlrec->locks[i].dbOid,
xlrec->locks[i].relOid);
}
else if (info == XLOG_RUNNING_XACTS)
{
xl_running_xacts *xlrec = (xl_running_xacts *) rec;
standby_desc_running_xacts(buf, xlrec);
}
else if (info == XLOG_INVALIDATIONS)
{
xl_invalidations *xlrec = (xl_invalidations *) rec;
standby_desc_invalidations(buf, xlrec->nmsgs, xlrec->msgs,
xlrec->dbId, xlrec->tsId,
xlrec->relcacheInitFileInval);
}
}
/*
* Handle rmgr STANDBY_ID records for DecodeRecordIntoReorderBuffer().
*/
static void
DecodeStandbyOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
{
SnapBuild *builder = ctx->snapshot_builder;
XLogReaderState *r = buf->record;
uint8 info = XLogRecGetInfo(r) & ~XLR_INFO_MASK;
switch (info)
{
case XLOG_RUNNING_XACTS:
{
xl_running_xacts *running = (xl_running_xacts *) XLogRecGetData(r);
SnapBuildProcessRunningXacts(builder, buf->origptr, running);
/*
* Abort all transactions that we keep track of, that are
* older than the record's oldestRunningXid. This is the most
* convenient spot for doing so since, in contrast to shutdown
* or end-of-recovery checkpoints, we have information about
* all running transactions which includes prepared ones,
* while shutdown checkpoints just know that no non-prepared
* transactions are in progress.
*/
ReorderBufferAbortOld(ctx->reorder, running->oldestRunningXid);
}
break;
case XLOG_STANDBY_LOCK:
break;
default:
elog(ERROR, "unexpected RM_STANDBY_ID record type: %u", info);
}
}
void
multixact_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == XLOG_MULTIXACT_ZERO_OFF_PAGE ||
info == XLOG_MULTIXACT_ZERO_MEM_PAGE)
{
int pageno;
memcpy(&pageno, rec, sizeof(int));
appendStringInfo(buf, "%d", pageno);
}
else if (info == XLOG_MULTIXACT_CREATE_ID)
{
xl_multixact_create *xlrec = (xl_multixact_create *) rec;
int i;
appendStringInfo(buf, "%u offset %u nmembers %d: ", xlrec->mid,
xlrec->moff, xlrec->nmembers);
for (i = 0; i < xlrec->nmembers; i++)
out_member(buf, &xlrec->members[i]);
}
else if (info == XLOG_MULTIXACT_TRUNCATE_ID)
{
xl_multixact_truncate *xlrec = (xl_multixact_truncate *) rec;
appendStringInfo(buf, "offsets [%u, %u), members [%u, %u)",
xlrec->startTruncOff, xlrec->endTruncOff,
xlrec->startTruncMemb, xlrec->endTruncMemb);
}
}
void
heap2_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
info &= XLOG_HEAP_OPMASK;
if (info == XLOG_HEAP2_CLEAN)
{
xl_heap_clean *xlrec = (xl_heap_clean *) rec;
appendStringInfo(buf, "remxid %u", xlrec->latestRemovedXid);
}
else if (info == XLOG_HEAP2_FREEZE_PAGE)
{
xl_heap_freeze_page *xlrec = (xl_heap_freeze_page *) rec;
appendStringInfo(buf, "cutoff xid %u ntuples %u",
xlrec->cutoff_xid, xlrec->ntuples);
}
else if (info == XLOG_HEAP2_CLEANUP_INFO)
{
xl_heap_cleanup_info *xlrec = (xl_heap_cleanup_info *) rec;
appendStringInfo(buf, "remxid %u", xlrec->latestRemovedXid);
}
else if (info == XLOG_HEAP2_VISIBLE)
{
xl_heap_visible *xlrec = (xl_heap_visible *) rec;
appendStringInfo(buf, "cutoff xid %u", xlrec->cutoff_xid);
}
else if (info == XLOG_HEAP2_MULTI_INSERT)
{
xl_heap_multi_insert *xlrec = (xl_heap_multi_insert *) rec;
appendStringInfo(buf, "%d tuples", xlrec->ntuples);
}
else if (info == XLOG_HEAP2_LOCK_UPDATED)
{
xl_heap_lock_updated *xlrec = (xl_heap_lock_updated *) rec;
appendStringInfo(buf, "off %u: xmax %u ", xlrec->offnum, xlrec->xmax);
out_infobits(buf, xlrec->infobits_set);
}
else if (info == XLOG_HEAP2_NEW_CID)
{
xl_heap_new_cid *xlrec = (xl_heap_new_cid *) rec;
appendStringInfo(buf, "rel %u/%u/%u; tid %u/%u",
xlrec->target_node.spcNode,
xlrec->target_node.dbNode,
xlrec->target_node.relNode,
ItemPointerGetBlockNumber(&(xlrec->target_tid)),
ItemPointerGetOffsetNumber(&(xlrec->target_tid)));
appendStringInfo(buf, "; cmin: %u, cmax: %u, combo: %u",
xlrec->cmin, xlrec->cmax, xlrec->combocid);
}
}
void
heap_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
info &= XLOG_HEAP_OPMASK;
if (info == XLOG_HEAP_INSERT)
{
xl_heap_insert *xlrec = (xl_heap_insert *) rec;
appendStringInfo(buf, "off %u", xlrec->offnum);
}
else if (info == XLOG_HEAP_DELETE)
{
xl_heap_delete *xlrec = (xl_heap_delete *) rec;
appendStringInfo(buf, "off %u ", xlrec->offnum);
out_infobits(buf, xlrec->infobits_set);
}
else if (info == XLOG_HEAP_UPDATE)
{
xl_heap_update *xlrec = (xl_heap_update *) rec;
appendStringInfo(buf, "off %u xmax %u ",
xlrec->old_offnum,
xlrec->old_xmax);
out_infobits(buf, xlrec->old_infobits_set);
appendStringInfo(buf, "; new off %u xmax %u",
xlrec->new_offnum,
xlrec->new_xmax);
}
else if (info == XLOG_HEAP_HOT_UPDATE)
{
xl_heap_update *xlrec = (xl_heap_update *) rec;
appendStringInfo(buf, "off %u xmax %u ",
xlrec->old_offnum,
xlrec->old_xmax);
out_infobits(buf, xlrec->old_infobits_set);
appendStringInfo(buf, "; new off %u xmax %u",
xlrec->new_offnum,
xlrec->new_xmax);
}
else if (info == XLOG_HEAP_LOCK)
{
xl_heap_lock *xlrec = (xl_heap_lock *) rec;
appendStringInfo(buf, "off %u: xid %u ", xlrec->offnum, xlrec->locking_xid);
out_infobits(buf, xlrec->infobits_set);
}
else if (info == XLOG_HEAP_INPLACE)
{
xl_heap_inplace *xlrec = (xl_heap_inplace *) rec;
appendStringInfo(buf, "off %u", xlrec->offnum);
}
}
/*
* Redo is basically just noop for logical decoding messages.
*/
void
logicalmsg_redo(XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info != XLOG_LOGICAL_MESSAGE)
elog(PANIC, "logicalmsg_redo: unknown op code %u", info);
/* This is only interesting for logical decoding, see decode.c. */
}
void
seq_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
xl_seq_rec *xlrec = (xl_seq_rec *) rec;
if (info == XLOG_SEQ_LOG)
appendStringInfo(buf, "rel %u/%u/%u",
xlrec->node.spcNode, xlrec->node.dbNode,
xlrec->node.relNode);
}
void
brin_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
info &= XLOG_BRIN_OPMASK;
if (info == XLOG_BRIN_CREATE_INDEX)
{
xl_brin_createidx *xlrec = (xl_brin_createidx *) rec;
appendStringInfo(buf, "v%d pagesPerRange %u",
xlrec->version, xlrec->pagesPerRange);
}
else if (info == XLOG_BRIN_INSERT)
{
xl_brin_insert *xlrec = (xl_brin_insert *) rec;
appendStringInfo(buf, "heapBlk %u pagesPerRange %u offnum %u",
xlrec->heapBlk,
xlrec->pagesPerRange,
xlrec->offnum);
}
else if (info == XLOG_BRIN_UPDATE)
{
xl_brin_update *xlrec = (xl_brin_update *) rec;
appendStringInfo(buf, "heapBlk %u pagesPerRange %u old offnum %u, new offnum %u",
xlrec->insert.heapBlk,
xlrec->insert.pagesPerRange,
xlrec->oldOffnum,
xlrec->insert.offnum);
}
else if (info == XLOG_BRIN_SAMEPAGE_UPDATE)
{
xl_brin_samepage_update *xlrec = (xl_brin_samepage_update *) rec;
appendStringInfo(buf, "offnum %u", xlrec->offnum);
}
else if (info == XLOG_BRIN_REVMAP_EXTEND)
{
xl_brin_revmap_extend *xlrec = (xl_brin_revmap_extend *) rec;
appendStringInfo(buf, "targetBlk %u", xlrec->targetBlk);
}
else if (info == XLOG_BRIN_DESUMMARIZE)
{
xl_brin_desummarize *xlrec = (xl_brin_desummarize *) rec;
appendStringInfo(buf, "pagesPerRange %u, heapBlk %u, page offset %u",
xlrec->pagesPerRange, xlrec->heapBlk, xlrec->regOffset);
}
}
void
btree_redo(XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
switch (info)
{
case XLOG_BTREE_INSERT_LEAF:
btree_xlog_insert(true, false, record);
break;
case XLOG_BTREE_INSERT_UPPER:
btree_xlog_insert(false, false, record);
break;
case XLOG_BTREE_INSERT_META:
btree_xlog_insert(false, true, record);
break;
case XLOG_BTREE_SPLIT_L:
btree_xlog_split(true, false, record);
break;
case XLOG_BTREE_SPLIT_R:
btree_xlog_split(false, false, record);
break;
case XLOG_BTREE_SPLIT_L_ROOT:
btree_xlog_split(true, true, record);
break;
case XLOG_BTREE_SPLIT_R_ROOT:
btree_xlog_split(false, true, record);
break;
case XLOG_BTREE_VACUUM:
btree_xlog_vacuum(record);
break;
case XLOG_BTREE_DELETE:
btree_xlog_delete(record);
break;
case XLOG_BTREE_MARK_PAGE_HALFDEAD:
btree_xlog_mark_page_halfdead(info, record);
break;
case XLOG_BTREE_UNLINK_PAGE:
case XLOG_BTREE_UNLINK_PAGE_META:
btree_xlog_unlink_page(info, record);
break;
case XLOG_BTREE_NEWROOT:
btree_xlog_newroot(record);
break;
case XLOG_BTREE_REUSE_PAGE:
btree_xlog_reuse_page(record);
break;
default:
elog(PANIC, "btree_redo: unknown op code %u", info);
}
}
void
gin_redo(XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
MemoryContext oldCtx;
/*
* GIN indexes do not require any conflict processing. NB: If we ever
* implement a similar optimization as we have in b-tree, and remove
* killed tuples outside VACUUM, we'll need to handle that here.
*/
oldCtx = MemoryContextSwitchTo(opCtx);
switch (info)
{
case XLOG_GIN_CREATE_INDEX:
ginRedoCreateIndex(record);
break;
case XLOG_GIN_CREATE_PTREE:
ginRedoCreatePTree(record);
break;
case XLOG_GIN_INSERT:
ginRedoInsert(record);
break;
case XLOG_GIN_SPLIT:
ginRedoSplit(record);
break;
case XLOG_GIN_VACUUM_PAGE:
ginRedoVacuumPage(record);
break;
case XLOG_GIN_VACUUM_DATA_LEAF_PAGE:
ginRedoVacuumDataLeafPage(record);
break;
case XLOG_GIN_DELETE_PAGE:
ginRedoDeletePage(record);
break;
case XLOG_GIN_UPDATE_META_PAGE:
ginRedoUpdateMetapage(record);
break;
case XLOG_GIN_INSERT_LISTPAGE:
ginRedoInsertListPage(record);
break;
case XLOG_GIN_DELETE_LISTPAGE:
ginRedoDeleteListPages(record);
break;
default:
elog(PANIC, "gin_redo: unknown op code %u", info);
}
MemoryContextSwitchTo(oldCtx);
MemoryContextReset(opCtx);
}
void
xact_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == XLOG_XACT_COMMIT_COMPACT)
{
xl_xact_commit_compact *xlrec = (xl_xact_commit_compact *) rec;
xact_desc_commit_compact(buf, xlrec);
}
else if (info == XLOG_XACT_COMMIT)
{
xl_xact_commit *xlrec = (xl_xact_commit *) rec;
xact_desc_commit(buf, xlrec);
}
else if (info == XLOG_XACT_ABORT)
{
xl_xact_abort *xlrec = (xl_xact_abort *) rec;
xact_desc_abort(buf, xlrec);
}
else if (info == XLOG_XACT_COMMIT_PREPARED)
{
xl_xact_commit_prepared *xlrec = (xl_xact_commit_prepared *) rec;
appendStringInfo(buf, "%u: ", xlrec->xid);
xact_desc_commit(buf, &xlrec->crec);
}
else if (info == XLOG_XACT_ABORT_PREPARED)
{
xl_xact_abort_prepared *xlrec = (xl_xact_abort_prepared *) rec;
appendStringInfo(buf, "%u: ", xlrec->xid);
xact_desc_abort(buf, &xlrec->arec);
}
else if (info == XLOG_XACT_ASSIGNMENT)
{
xl_xact_assignment *xlrec = (xl_xact_assignment *) rec;
/*
* Note that we ignore the WAL record's xid, since we're more
* interested in the top-level xid that issued the record and which
* xids are being reported here.
*/
appendStringInfo(buf, "xtop %u: ", xlrec->xtop);
xact_desc_assignment(buf, xlrec);
}
}
/*
* Handle rmgr HEAP2_ID records for DecodeRecordIntoReorderBuffer().
*/
static void
DecodeHeap2Op(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
{
uint8 info = XLogRecGetInfo(buf->record) & XLOG_HEAP_OPMASK;
TransactionId xid = XLogRecGetXid(buf->record);
SnapBuild *builder = ctx->snapshot_builder;
ReorderBufferProcessXid(ctx->reorder, xid, buf->origptr);
/* no point in doing anything yet */
if (SnapBuildCurrentState(builder) < SNAPBUILD_FULL_SNAPSHOT)
return;
switch (info)
{
case XLOG_HEAP2_MULTI_INSERT:
if (SnapBuildProcessChange(builder, xid, buf->origptr))
DecodeMultiInsert(ctx, buf);
break;
case XLOG_HEAP2_NEW_CID:
{
xl_heap_new_cid *xlrec;
xlrec = (xl_heap_new_cid *) XLogRecGetData(buf->record);
SnapBuildProcessNewCid(builder, xid, buf->origptr, xlrec);
break;
}
case XLOG_HEAP2_REWRITE:
/*
* Although these records only exist to serve the needs of logical
* decoding, all the work happens as part of crash or archive
* recovery, so we don't need to do anything here.
*/
break;
/*
* Everything else here is just low level physical stuff we're not
* interested in.
*/
case XLOG_HEAP2_FREEZE_PAGE:
case XLOG_HEAP2_CLEAN:
case XLOG_HEAP2_CLEANUP_INFO:
case XLOG_HEAP2_VISIBLE:
case XLOG_HEAP2_LOCK_UPDATED:
break;
default:
elog(ERROR, "unexpected RM_HEAP2_ID record type: %u", info);
}
}
void
relmap_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == XLOG_RELMAP_UPDATE)
{
xl_relmap_update *xlrec = (xl_relmap_update *) rec;
appendStringInfo(buf, "database %u tablespace %u size %u",
xlrec->dbid, xlrec->tsid, xlrec->nbytes);
}
}
void
hash_redo(XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
switch (info)
{
case XLOG_HASH_INIT_META_PAGE:
hash_xlog_init_meta_page(record);
break;
case XLOG_HASH_INIT_BITMAP_PAGE:
hash_xlog_init_bitmap_page(record);
break;
case XLOG_HASH_INSERT:
hash_xlog_insert(record);
break;
case XLOG_HASH_ADD_OVFL_PAGE:
hash_xlog_add_ovfl_page(record);
break;
case XLOG_HASH_SPLIT_ALLOCATE_PAGE:
hash_xlog_split_allocate_page(record);
break;
case XLOG_HASH_SPLIT_PAGE:
hash_xlog_split_page(record);
break;
case XLOG_HASH_SPLIT_COMPLETE:
hash_xlog_split_complete(record);
break;
case XLOG_HASH_MOVE_PAGE_CONTENTS:
hash_xlog_move_page_contents(record);
break;
case XLOG_HASH_SQUEEZE_PAGE:
hash_xlog_squeeze_page(record);
break;
case XLOG_HASH_DELETE:
hash_xlog_delete(record);
break;
case XLOG_HASH_SPLIT_CLEANUP:
hash_xlog_split_cleanup(record);
break;
case XLOG_HASH_UPDATE_META_PAGE:
hash_xlog_update_meta_page(record);
break;
case XLOG_HASH_VACUUM_ONE_PAGE:
hash_xlog_vacuum_one_page(record);
break;
default:
elog(PANIC, "hash_redo: unknown op code %u", info);
}
}
void
clog_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == CLOG_ZEROPAGE || info == CLOG_TRUNCATE)
{
int pageno;
memcpy(&pageno, rec, sizeof(int));
appendStringInfo(buf, "%d", pageno);
}
}
void
commit_ts_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == COMMIT_TS_ZEROPAGE)
{
int pageno;
memcpy(&pageno, rec, sizeof(int));
appendStringInfo(buf, "%d", pageno);
}
else if (info == COMMIT_TS_TRUNCATE)
{
int pageno;
memcpy(&pageno, rec, sizeof(int));
appendStringInfo(buf, "%d", pageno);
}
else if (info == COMMIT_TS_SETTS)
{
xl_commit_ts_set *xlrec = (xl_commit_ts_set *) rec;
int nsubxids;
appendStringInfo(buf, "set %s/%d for: %u",
timestamptz_to_str(xlrec->timestamp),
xlrec->nodeid,
xlrec->mainxid);
nsubxids = ((XLogRecGetDataLen(record) - SizeOfCommitTsSet) /
sizeof(TransactionId));
if (nsubxids > 0)
{
int i;
TransactionId *subxids;
subxids = palloc(sizeof(TransactionId) * nsubxids);
memcpy(subxids,
XLogRecGetData(record) + SizeOfCommitTsSet,
sizeof(TransactionId) * nsubxids);
for (i = 0; i < nsubxids; i++)
appendStringInfo(buf, ", %u", subxids[i]);
pfree(subxids);
}
}
}
void
gist_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
switch (info)
{
case XLOG_GIST_PAGE_UPDATE:
out_gistxlogPageUpdate(buf, (gistxlogPageUpdate *) rec);
break;
case XLOG_GIST_PAGE_SPLIT:
out_gistxlogPageSplit(buf, (gistxlogPageSplit *) rec);
break;
case XLOG_GIST_CREATE_INDEX:
break;
}
}
void
tblspc_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == XLOG_TBLSPC_CREATE)
{
xl_tblspc_create_rec *xlrec = (xl_tblspc_create_rec *) rec;
appendStringInfo(buf, "%u \"%s\"", xlrec->ts_id, xlrec->ts_path);
}
else if (info == XLOG_TBLSPC_DROP)
{
xl_tblspc_drop_rec *xlrec = (xl_tblspc_drop_rec *) rec;
appendStringInfo(buf, "%u", xlrec->ts_id);
}
}
void
spg_redo(XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
MemoryContext oldCxt;
oldCxt = MemoryContextSwitchTo(opCtx);
switch (info)
{
case XLOG_SPGIST_CREATE_INDEX:
spgRedoCreateIndex(record);
break;
case XLOG_SPGIST_ADD_LEAF:
spgRedoAddLeaf(record);
break;
case XLOG_SPGIST_MOVE_LEAFS:
spgRedoMoveLeafs(record);
break;
case XLOG_SPGIST_ADD_NODE:
spgRedoAddNode(record);
break;
case XLOG_SPGIST_SPLIT_TUPLE:
spgRedoSplitTuple(record);
break;
case XLOG_SPGIST_PICKSPLIT:
spgRedoPickSplit(record);
break;
case XLOG_SPGIST_VACUUM_LEAF:
spgRedoVacuumLeaf(record);
break;
case XLOG_SPGIST_VACUUM_ROOT:
spgRedoVacuumRoot(record);
break;
case XLOG_SPGIST_VACUUM_REDIRECT:
spgRedoVacuumRedirect(record);
break;
default:
elog(PANIC, "spg_redo: unknown op code %u", info);
}
MemoryContextSwitchTo(oldCxt);
MemoryContextReset(opCtx);
}
/*
* Handle rmgr LOGICALMSG_ID records for DecodeRecordIntoReorderBuffer().
*/
static void
DecodeLogicalMsgOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
{
SnapBuild *builder = ctx->snapshot_builder;
XLogReaderState *r = buf->record;
TransactionId xid = XLogRecGetXid(r);
uint8 info = XLogRecGetInfo(r) & ~XLR_INFO_MASK;
RepOriginId origin_id = XLogRecGetOrigin(r);
Snapshot snapshot;
xl_logical_message *message;
if (info != XLOG_LOGICAL_MESSAGE)
elog(ERROR, "unexpected RM_LOGICALMSG_ID record type: %u", info);
ReorderBufferProcessXid(ctx->reorder, XLogRecGetXid(r), buf->origptr);
/* No point in doing anything yet. */
if (SnapBuildCurrentState(builder) < SNAPBUILD_FULL_SNAPSHOT)
return;
message = (xl_logical_message *) XLogRecGetData(r);
if (message->dbId != ctx->slot->data.database ||
FilterByOrigin(ctx, origin_id))
return;
if (message->transactional &&
!SnapBuildProcessChange(builder, xid, buf->origptr))
return;
else if (!message->transactional &&
(SnapBuildCurrentState(builder) != SNAPBUILD_CONSISTENT ||
SnapBuildXactNeedsSkip(builder, buf->origptr)))
return;
snapshot = SnapBuildGetOrBuildSnapshot(builder, xid);
ReorderBufferQueueMessage(ctx->reorder, xid, snapshot, buf->endptr,
message->transactional,
message->message, /* first part of message is
* prefix */
message->message_size,
message->message + message->prefix_size);
}
/*
* RELMAP resource manager's routines
*/
void
relmap_redo(XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
/* Backup blocks are not used in relmap records */
Assert(!XLogRecHasAnyBlockRefs(record));
if (info == XLOG_RELMAP_UPDATE)
{
xl_relmap_update *xlrec = (xl_relmap_update *) XLogRecGetData(record);
RelMapFile newmap;
char *dbpath;
if (xlrec->nbytes != sizeof(RelMapFile))
elog(PANIC, "relmap_redo: wrong size %u in relmap update record",
xlrec->nbytes);
memcpy(&newmap, xlrec->data, sizeof(newmap));
/* We need to construct the pathname for this database */
dbpath = GetDatabasePath(xlrec->dbid, xlrec->tsid);
/*
* Write out the new map and send sinval, but of course don't write a
* new WAL entry. There's no surrounding transaction to tell to
* preserve files, either.
*
* There shouldn't be anyone else updating relmaps during WAL replay,
* so we don't bother to take the RelationMappingLock. We would need
* to do so if load_relmap_file needed to interlock against writers.
*/
write_relmap_file((xlrec->dbid == InvalidOid), &newmap,
false, true, false,
xlrec->dbid, xlrec->tsid, dbpath);
pfree(dbpath);
}
else
elog(PANIC, "relmap_redo: unknown op code %u", info);
}
void
smgr_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == XLOG_SMGR_CREATE)
{
xl_smgr_create *xlrec = (xl_smgr_create *) rec;
char *path = relpathperm(xlrec->rnode, xlrec->forkNum);
appendStringInfoString(buf, path);
pfree(path);
}
else if (info == XLOG_SMGR_TRUNCATE)
{
xl_smgr_truncate *xlrec = (xl_smgr_truncate *) rec;
char *path = relpathperm(xlrec->rnode, MAIN_FORKNUM);
appendStringInfo(buf, "%s to %u blocks flags %d", path,
xlrec->blkno, xlrec->flags);
pfree(path);
}
}
/*
* CommitTS resource manager's routines
*/
void
commit_ts_redo(XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
/* Backup blocks are not used in commit_ts records */
Assert(!XLogRecHasAnyBlockRefs(record));
if (info == COMMIT_TS_ZEROPAGE)
{
int pageno;
int slotno;
memcpy(&pageno, XLogRecGetData(record), sizeof(int));
LWLockAcquire(CommitTsControlLock, LW_EXCLUSIVE);
slotno = ZeroCommitTsPage(pageno, false);
SimpleLruWritePage(CommitTsCtl, slotno);
Assert(!CommitTsCtl->shared->page_dirty[slotno]);
LWLockRelease(CommitTsControlLock);
}
else if (info == COMMIT_TS_TRUNCATE)
{
int pageno;
memcpy(&pageno, XLogRecGetData(record), sizeof(int));
/*
* During XLOG replay, latest_page_number isn't set up yet; insert a
* suitable value to bypass the sanity test in SimpleLruTruncate.
*/
CommitTsCtl->shared->latest_page_number = pageno;
SimpleLruTruncate(CommitTsCtl, pageno);
}
else if (info == COMMIT_TS_SETTS)
{
xl_commit_ts_set *setts = (xl_commit_ts_set *) XLogRecGetData(record);
int nsubxids;
TransactionId *subxids;
nsubxids = ((XLogRecGetDataLen(record) - SizeOfCommitTsSet) /
sizeof(TransactionId));
if (nsubxids > 0)
{
subxids = palloc(sizeof(TransactionId) * nsubxids);
memcpy(subxids,
XLogRecGetData(record) + SizeOfCommitTsSet,
sizeof(TransactionId) * nsubxids);
}
else
subxids = NULL;
TransactionTreeSetCommitTsData(setts->mainxid, nsubxids, subxids,
setts->timestamp, setts->nodeid, true);
if (subxids)
pfree(subxids);
}
else
elog(PANIC, "commit_ts_redo: unknown op code %u", info);
}
/*
* Handle rmgr XACT_ID records for DecodeRecordIntoReorderBuffer().
*/
static void
DecodeXactOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
{
SnapBuild *builder = ctx->snapshot_builder;
ReorderBuffer *reorder = ctx->reorder;
XLogReaderState *r = buf->record;
uint8 info = XLogRecGetInfo(r) & ~XLR_INFO_MASK;
/* no point in doing anything yet, data could not be decoded anyway */
if (SnapBuildCurrentState(builder) < SNAPBUILD_FULL_SNAPSHOT)
return;
switch (info)
{
case XLOG_XACT_COMMIT:
{
xl_xact_commit *xlrec;
TransactionId *subxacts = NULL;
SharedInvalidationMessage *invals = NULL;
xlrec = (xl_xact_commit *) XLogRecGetData(r);
subxacts = (TransactionId *) &(xlrec->xnodes[xlrec->nrels]);
invals = (SharedInvalidationMessage *) &(subxacts[xlrec->nsubxacts]);
DecodeCommit(ctx, buf, XLogRecGetXid(r), xlrec->dbId,
xlrec->xact_time,
xlrec->nsubxacts, subxacts,
xlrec->nmsgs, invals);
break;
}
case XLOG_XACT_COMMIT_PREPARED:
{
xl_xact_commit_prepared *prec;
xl_xact_commit *xlrec;
TransactionId *subxacts;
SharedInvalidationMessage *invals = NULL;
/* Prepared commits contain a normal commit record... */
prec = (xl_xact_commit_prepared *) XLogRecGetData(r);
xlrec = &prec->crec;
subxacts = (TransactionId *) &(xlrec->xnodes[xlrec->nrels]);
invals = (SharedInvalidationMessage *) &(subxacts[xlrec->nsubxacts]);
DecodeCommit(ctx, buf, prec->xid, xlrec->dbId,
xlrec->xact_time,
xlrec->nsubxacts, subxacts,
xlrec->nmsgs, invals);
break;
}
case XLOG_XACT_COMMIT_COMPACT:
{
xl_xact_commit_compact *xlrec;
xlrec = (xl_xact_commit_compact *) XLogRecGetData(r);
DecodeCommit(ctx, buf, XLogRecGetXid(r), InvalidOid,
xlrec->xact_time,
xlrec->nsubxacts, xlrec->subxacts,
0, NULL);
break;
}
case XLOG_XACT_ABORT:
{
xl_xact_abort *xlrec;
TransactionId *sub_xids;
xlrec = (xl_xact_abort *) XLogRecGetData(r);
sub_xids = (TransactionId *) &(xlrec->xnodes[xlrec->nrels]);
DecodeAbort(ctx, buf->origptr, XLogRecGetXid(r),
sub_xids, xlrec->nsubxacts);
break;
}
case XLOG_XACT_ABORT_PREPARED:
{
xl_xact_abort_prepared *prec;
xl_xact_abort *xlrec;
TransactionId *sub_xids;
/* prepared abort contain a normal commit abort... */
prec = (xl_xact_abort_prepared *) XLogRecGetData(r);
xlrec = &prec->arec;
sub_xids = (TransactionId *) &(xlrec->xnodes[xlrec->nrels]);
/* r->xl_xid is committed in a separate record */
DecodeAbort(ctx, buf->origptr, prec->xid,
sub_xids, xlrec->nsubxacts);
break;
}
case XLOG_XACT_ASSIGNMENT:
{
xl_xact_assignment *xlrec;
int i;
TransactionId *sub_xid;
xlrec = (xl_xact_assignment *) XLogRecGetData(r);
sub_xid = &xlrec->xsub[0];
for (i = 0; i < xlrec->nsubxacts; i++)
{
ReorderBufferAssignChild(reorder, xlrec->xtop,
*(sub_xid++), buf->origptr);
}
break;
}
case XLOG_XACT_PREPARE:
/*
* Currently decoding ignores PREPARE TRANSACTION and will just
* decode the transaction when the COMMIT PREPARED is sent or
* throw away the transaction's contents when a ROLLBACK PREPARED
* is received. In the future we could add code to expose prepared
* transactions in the changestream allowing for a kind of
* distributed 2PC.
*/
break;
default:
elog(ERROR, "unexpected RM_XACT_ID record type: %u", info);
}
}
void
btree_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
switch (info)
{
case XLOG_BTREE_INSERT_LEAF:
case XLOG_BTREE_INSERT_UPPER:
case XLOG_BTREE_INSERT_META:
{
xl_btree_insert *xlrec = (xl_btree_insert *) rec;
appendStringInfo(buf, "off %u", xlrec->offnum);
break;
}
case XLOG_BTREE_SPLIT_L:
case XLOG_BTREE_SPLIT_R:
{
xl_btree_split *xlrec = (xl_btree_split *) rec;
appendStringInfo(buf, "level %u, firstright %d",
xlrec->level, xlrec->firstright);
break;
}
case XLOG_BTREE_VACUUM:
{
xl_btree_vacuum *xlrec = (xl_btree_vacuum *) rec;
appendStringInfo(buf, "lastBlockVacuumed %u",
xlrec->lastBlockVacuumed);
break;
}
case XLOG_BTREE_DELETE:
{
xl_btree_delete *xlrec = (xl_btree_delete *) rec;
appendStringInfo(buf, "%d items", xlrec->nitems);
break;
}
case XLOG_BTREE_MARK_PAGE_HALFDEAD:
{
xl_btree_mark_page_halfdead *xlrec = (xl_btree_mark_page_halfdead *) rec;
appendStringInfo(buf, "topparent %u; leaf %u; left %u; right %u",
xlrec->topparent, xlrec->leafblk, xlrec->leftblk, xlrec->rightblk);
break;
}
case XLOG_BTREE_UNLINK_PAGE_META:
case XLOG_BTREE_UNLINK_PAGE:
{
xl_btree_unlink_page *xlrec = (xl_btree_unlink_page *) rec;
appendStringInfo(buf, "left %u; right %u; btpo_xact %u; ",
xlrec->leftsib, xlrec->rightsib,
xlrec->btpo_xact);
appendStringInfo(buf, "leafleft %u; leafright %u; topparent %u",
xlrec->leafleftsib, xlrec->leafrightsib,
xlrec->topparent);
break;
}
case XLOG_BTREE_NEWROOT:
{
xl_btree_newroot *xlrec = (xl_btree_newroot *) rec;
appendStringInfo(buf, "lev %u", xlrec->level);
break;
}
case XLOG_BTREE_REUSE_PAGE:
{
xl_btree_reuse_page *xlrec = (xl_btree_reuse_page *) rec;
appendStringInfo(buf, "rel %u/%u/%u; latestRemovedXid %u",
xlrec->node.spcNode, xlrec->node.dbNode,
xlrec->node.relNode, xlrec->latestRemovedXid);
break;
}
}
}
/*
* Handle rmgr XACT_ID records for DecodeRecordIntoReorderBuffer().
*/
static void
DecodeXactOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
{
SnapBuild *builder = ctx->snapshot_builder;
ReorderBuffer *reorder = ctx->reorder;
XLogReaderState *r = buf->record;
uint8 info = XLogRecGetInfo(r) & XLOG_XACT_OPMASK;
/* no point in doing anything yet, data could not be decoded anyway */
if (SnapBuildCurrentState(builder) < SNAPBUILD_FULL_SNAPSHOT)
return;
switch (info)
{
case XLOG_XACT_COMMIT:
case XLOG_XACT_COMMIT_PREPARED:
{
xl_xact_commit *xlrec;
xl_xact_parsed_commit parsed;
TransactionId xid;
xlrec = (xl_xact_commit *) XLogRecGetData(r);
ParseCommitRecord(XLogRecGetInfo(buf->record), xlrec, &parsed);
if (!TransactionIdIsValid(parsed.twophase_xid))
xid = XLogRecGetXid(r);
else
xid = parsed.twophase_xid;
DecodeCommit(ctx, buf, &parsed, xid);
break;
}
case XLOG_XACT_ABORT:
case XLOG_XACT_ABORT_PREPARED:
{
xl_xact_abort *xlrec;
xl_xact_parsed_abort parsed;
TransactionId xid;
xlrec = (xl_xact_abort *) XLogRecGetData(r);
ParseAbortRecord(XLogRecGetInfo(buf->record), xlrec, &parsed);
if (!TransactionIdIsValid(parsed.twophase_xid))
xid = XLogRecGetXid(r);
else
xid = parsed.twophase_xid;
DecodeAbort(ctx, buf, &parsed, xid);
break;
}
case XLOG_XACT_ASSIGNMENT:
{
xl_xact_assignment *xlrec;
int i;
TransactionId *sub_xid;
xlrec = (xl_xact_assignment *) XLogRecGetData(r);
sub_xid = &xlrec->xsub[0];
for (i = 0; i < xlrec->nsubxacts; i++)
{
ReorderBufferAssignChild(reorder, xlrec->xtop,
*(sub_xid++), buf->origptr);
}
break;
}
case XLOG_XACT_PREPARE:
/*
* Currently decoding ignores PREPARE TRANSACTION and will just
* decode the transaction when the COMMIT PREPARED is sent or
* throw away the transaction's contents when a ROLLBACK PREPARED
* is received. In the future we could add code to expose prepared
* transactions in the changestream allowing for a kind of
* distributed 2PC.
*/
break;
default:
elog(ERROR, "unexpected RM_XACT_ID record type: %u", info);
}
}
/*
* Handle rmgr HEAP_ID records for DecodeRecordIntoReorderBuffer().
*/
static void
DecodeHeapOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
{
uint8 info = XLogRecGetInfo(buf->record) & XLOG_HEAP_OPMASK;
TransactionId xid = XLogRecGetXid(buf->record);
SnapBuild *builder = ctx->snapshot_builder;
/* no point in doing anything yet */
if (SnapBuildCurrentState(builder) < SNAPBUILD_FULL_SNAPSHOT)
return;
switch (info)
{
case XLOG_HEAP_INSERT:
if (SnapBuildProcessChange(builder, xid, buf->origptr))
DecodeInsert(ctx, buf);
break;
/*
* Treat HOT update as normal updates. There is no useful
* information in the fact that we could make it a HOT update
* locally and the WAL layout is compatible.
*/
case XLOG_HEAP_HOT_UPDATE:
case XLOG_HEAP_UPDATE:
if (SnapBuildProcessChange(builder, xid, buf->origptr))
DecodeUpdate(ctx, buf);
break;
case XLOG_HEAP_DELETE:
if (SnapBuildProcessChange(builder, xid, buf->origptr))
DecodeDelete(ctx, buf);
break;
case XLOG_HEAP_INPLACE:
/*
* Inplace updates are only ever performed on catalog tuples and
* can, per definition, not change tuple visibility. Since we
* don't decode catalog tuples, we're not interested in the
* record's contents.
*
* In-place updates can be used either by XID-bearing transactions
* (e.g. in CREATE INDEX CONCURRENTLY) or by XID-less
* transactions (e.g. VACUUM). In the former case, the commit
* record will include cache invalidations, so we mark the
* transaction as catalog modifying here. Currently that's
* redundant because the commit will do that as well, but once we
* support decoding in-progress relations, this will be important.
*/
if (!TransactionIdIsValid(xid))
break;
SnapBuildProcessChange(builder, xid, buf->origptr);
ReorderBufferXidSetCatalogChanges(ctx->reorder, xid, buf->origptr);
break;
case XLOG_HEAP_CONFIRM:
if (SnapBuildProcessChange(builder, xid, buf->origptr))
DecodeSpecConfirm(ctx, buf);
break;
case XLOG_HEAP_LOCK:
/* we don't care about row level locks for now */
break;
default:
elog(ERROR, "unexpected RM_HEAP_ID record type: %u", info);
break;
}
}