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Commit7a5f6b4

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Make logical decoding a part of the rmgr.
Add a new rmgr method, rm_decode, and use that rather than a switchstatement.In preparation for rmgr extensibility.Reviewed-by: Julien RouhaudDiscussion:https://postgr.es/m/ed1fb2e22d15d3563ae0eb610f7b61bb15999c0a.camel%40j-davis.comDiscussion:https://postgr.es/m/20220118095332.6xtlcjoyxobv6cbk@jrouhaud
1 parenta3d6264 commit7a5f6b4

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8 files changed

+69
-112
lines changed

8 files changed

+69
-112
lines changed

‎src/backend/access/transam/rmgr.c

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -24,14 +24,15 @@
2424
#include"commands/dbcommands_xlog.h"
2525
#include"commands/sequence.h"
2626
#include"commands/tablespace.h"
27+
#include"replication/decode.h"
2728
#include"replication/message.h"
2829
#include"replication/origin.h"
2930
#include"storage/standby.h"
3031
#include"utils/relmapper.h"
3132

3233
/* must be kept in sync with RmgrData definition in xlog_internal.h */
33-
#definePG_RMGR(symname,name,redo,desc,identify,startup,cleanup,mask) \
34-
{ name, redo, desc, identify, startup, cleanup, mask },
34+
#definePG_RMGR(symname,name,redo,desc,identify,startup,cleanup,mask,decode) \
35+
{ name, redo, desc, identify, startup, cleanup, mask, decode },
3536

3637
constRmgrDataRmgrTable[RM_MAX_ID+1]= {
3738
#include"access/rmgrlist.h"

‎src/backend/replication/logical/decode.c

Lines changed: 21 additions & 84 deletions
Original file line numberDiff line numberDiff line change
@@ -43,21 +43,6 @@
4343
#include"replication/snapbuild.h"
4444
#include"storage/standby.h"
4545

46-
typedefstructXLogRecordBuffer
47-
{
48-
XLogRecPtrorigptr;
49-
XLogRecPtrendptr;
50-
XLogReaderState*record;
51-
}XLogRecordBuffer;
52-
53-
/* RMGR Handlers */
54-
staticvoidDecodeXLogOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
55-
staticvoidDecodeHeapOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
56-
staticvoidDecodeHeap2Op(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
57-
staticvoidDecodeXactOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
58-
staticvoidDecodeStandbyOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
59-
staticvoidDecodeLogicalMsgOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
60-
6146
/* individual record(group)'s handlers */
6247
staticvoidDecodeInsert(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
6348
staticvoidDecodeUpdate(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
@@ -107,6 +92,7 @@ LogicalDecodingProcessRecord(LogicalDecodingContext *ctx, XLogReaderState *recor
10792
{
10893
XLogRecordBufferbuf;
10994
TransactionIdtxid;
95+
RmgrIdrmid;
11096

11197
buf.origptr=ctx->reader->ReadRecPtr;
11298
buf.endptr=ctx->reader->EndRecPtr;
@@ -127,72 +113,23 @@ LogicalDecodingProcessRecord(LogicalDecodingContext *ctx, XLogReaderState *recor
127113
buf.origptr);
128114
}
129115

130-
/* cast so we get a warning when new rmgrs are added */
131-
switch ((RmgrId)XLogRecGetRmid(record))
132-
{
133-
/*
134-
* Rmgrs we care about for logical decoding. Add new rmgrs in
135-
* rmgrlist.h's order.
136-
*/
137-
caseRM_XLOG_ID:
138-
DecodeXLogOp(ctx,&buf);
139-
break;
140-
141-
caseRM_XACT_ID:
142-
DecodeXactOp(ctx,&buf);
143-
break;
116+
rmid=XLogRecGetRmid(record);
144117

145-
caseRM_STANDBY_ID:
146-
DecodeStandbyOp(ctx,&buf);
147-
break;
148-
149-
caseRM_HEAP2_ID:
150-
DecodeHeap2Op(ctx,&buf);
151-
break;
152-
153-
caseRM_HEAP_ID:
154-
DecodeHeapOp(ctx,&buf);
155-
break;
156-
157-
caseRM_LOGICALMSG_ID:
158-
DecodeLogicalMsgOp(ctx,&buf);
159-
break;
160-
161-
/*
162-
* Rmgrs irrelevant for logical decoding; they describe stuff not
163-
* represented in logical decoding. Add new rmgrs in rmgrlist.h's
164-
* order.
165-
*/
166-
caseRM_SMGR_ID:
167-
caseRM_CLOG_ID:
168-
caseRM_DBASE_ID:
169-
caseRM_TBLSPC_ID:
170-
caseRM_MULTIXACT_ID:
171-
caseRM_RELMAP_ID:
172-
caseRM_BTREE_ID:
173-
caseRM_HASH_ID:
174-
caseRM_GIN_ID:
175-
caseRM_GIST_ID:
176-
caseRM_SEQ_ID:
177-
caseRM_SPGIST_ID:
178-
caseRM_BRIN_ID:
179-
caseRM_COMMIT_TS_ID:
180-
caseRM_REPLORIGIN_ID:
181-
caseRM_GENERIC_ID:
182-
/* just deal with xid, and done */
183-
ReorderBufferProcessXid(ctx->reorder,XLogRecGetXid(record),
184-
buf.origptr);
185-
break;
186-
caseRM_NEXT_ID:
187-
elog(ERROR,"unexpected RM_NEXT_ID rmgr_id: %u", (RmgrIds)XLogRecGetRmid(buf.record));
118+
if (RmgrTable[rmid].rm_decode!=NULL)
119+
RmgrTable[rmid].rm_decode(ctx,&buf);
120+
else
121+
{
122+
/* just deal with xid, and done */
123+
ReorderBufferProcessXid(ctx->reorder,XLogRecGetXid(record),
124+
buf.origptr);
188125
}
189126
}
190127

191128
/*
192129
* Handle rmgr XLOG_ID records for DecodeRecordIntoReorderBuffer().
193130
*/
194-
staticvoid
195-
DecodeXLogOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
131+
void
132+
xlog_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
196133
{
197134
SnapBuild*builder=ctx->snapshot_builder;
198135
uint8info=XLogRecGetInfo(buf->record)& ~XLR_INFO_MASK;
@@ -234,8 +171,8 @@ DecodeXLogOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
234171
/*
235172
* Handle rmgr XACT_ID records for DecodeRecordIntoReorderBuffer().
236173
*/
237-
staticvoid
238-
DecodeXactOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
174+
void
175+
xact_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
239176
{
240177
SnapBuild*builder=ctx->snapshot_builder;
241178
ReorderBuffer*reorder=ctx->reorder;
@@ -391,8 +328,8 @@ DecodeXactOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
391328
/*
392329
* Handle rmgr STANDBY_ID records for DecodeRecordIntoReorderBuffer().
393330
*/
394-
staticvoid
395-
DecodeStandbyOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
331+
void
332+
standby_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
396333
{
397334
SnapBuild*builder=ctx->snapshot_builder;
398335
XLogReaderState*r=buf->record;
@@ -437,8 +374,8 @@ DecodeStandbyOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
437374
/*
438375
* Handle rmgr HEAP2_ID records for DecodeRecordIntoReorderBuffer().
439376
*/
440-
staticvoid
441-
DecodeHeap2Op(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
377+
void
378+
heap2_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
442379
{
443380
uint8info=XLogRecGetInfo(buf->record)&XLOG_HEAP_OPMASK;
444381
TransactionIdxid=XLogRecGetXid(buf->record);
@@ -497,8 +434,8 @@ DecodeHeap2Op(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
497434
/*
498435
* Handle rmgr HEAP_ID records for DecodeRecordIntoReorderBuffer().
499436
*/
500-
staticvoid
501-
DecodeHeapOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
437+
void
438+
heap_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
502439
{
503440
uint8info=XLogRecGetInfo(buf->record)&XLOG_HEAP_OPMASK;
504441
TransactionIdxid=XLogRecGetXid(buf->record);
@@ -619,8 +556,8 @@ FilterByOrigin(LogicalDecodingContext *ctx, RepOriginId origin_id)
619556
/*
620557
* Handle rmgr LOGICALMSG_ID records for DecodeRecordIntoReorderBuffer().
621558
*/
622-
staticvoid
623-
DecodeLogicalMsgOp(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
559+
void
560+
logicalmsg_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf)
624561
{
625562
SnapBuild*builder=ctx->snapshot_builder;
626563
XLogReaderState*r=buf->record;

‎src/bin/pg_rewind/parsexlog.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -28,7 +28,7 @@
2828
* RmgrNames is an array of resource manager names, to make error messages
2929
* a bit nicer.
3030
*/
31-
#definePG_RMGR(symname,name,redo,desc,identify,startup,cleanup,mask) \
31+
#definePG_RMGR(symname,name,redo,desc,identify,startup,cleanup,mask,decode) \
3232
name,
3333

3434
staticconstchar*RmgrNames[RM_MAX_ID+1]= {

‎src/bin/pg_waldump/rmgrdesc.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -32,7 +32,7 @@
3232
#include"storage/standbydefs.h"
3333
#include"utils/relmapper.h"
3434

35-
#definePG_RMGR(symname,name,redo,desc,identify,startup,cleanup,mask) \
35+
#definePG_RMGR(symname,name,redo,desc,identify,startup,cleanup,mask,decode) \
3636
{ name, desc, identify},
3737

3838
constRmgrDescDataRmgrDescTable[RM_MAX_ID+1]= {

‎src/include/access/rmgr.h

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -19,7 +19,7 @@ typedef uint8 RmgrId;
1919
* Note: RM_MAX_ID must fit in RmgrId; widening that type will affect the XLOG
2020
* file format.
2121
*/
22-
#definePG_RMGR(symname,name,redo,desc,identify,startup,cleanup,mask) \
22+
#definePG_RMGR(symname,name,redo,desc,identify,startup,cleanup,mask,decode) \
2323
symname,
2424

2525
typedefenumRmgrIds

‎src/include/access/rmgrlist.h

Lines changed: 22 additions & 22 deletions
Original file line numberDiff line numberDiff line change
@@ -25,25 +25,25 @@
2525
*/
2626

2727
/* symbol name, textual name, redo, desc, identify, startup, cleanup */
28-
PG_RMGR(RM_XLOG_ID,"XLOG",xlog_redo,xlog_desc,xlog_identify,NULL,NULL,NULL)
29-
PG_RMGR(RM_XACT_ID,"Transaction",xact_redo,xact_desc,xact_identify,NULL,NULL,NULL)
30-
PG_RMGR(RM_SMGR_ID,"Storage",smgr_redo,smgr_desc,smgr_identify,NULL,NULL,NULL)
31-
PG_RMGR(RM_CLOG_ID,"CLOG",clog_redo,clog_desc,clog_identify,NULL,NULL,NULL)
32-
PG_RMGR(RM_DBASE_ID,"Database",dbase_redo,dbase_desc,dbase_identify,NULL,NULL,NULL)
33-
PG_RMGR(RM_TBLSPC_ID,"Tablespace",tblspc_redo,tblspc_desc,tblspc_identify,NULL,NULL,NULL)
34-
PG_RMGR(RM_MULTIXACT_ID,"MultiXact",multixact_redo,multixact_desc,multixact_identify,NULL,NULL,NULL)
35-
PG_RMGR(RM_RELMAP_ID,"RelMap",relmap_redo,relmap_desc,relmap_identify,NULL,NULL,NULL)
36-
PG_RMGR(RM_STANDBY_ID,"Standby",standby_redo,standby_desc,standby_identify,NULL,NULL,NULL)
37-
PG_RMGR(RM_HEAP2_ID,"Heap2",heap2_redo,heap2_desc,heap2_identify,NULL,NULL,heap_mask)
38-
PG_RMGR(RM_HEAP_ID,"Heap",heap_redo,heap_desc,heap_identify,NULL,NULL,heap_mask)
39-
PG_RMGR(RM_BTREE_ID,"Btree",btree_redo,btree_desc,btree_identify,btree_xlog_startup,btree_xlog_cleanup,btree_mask)
40-
PG_RMGR(RM_HASH_ID,"Hash",hash_redo,hash_desc,hash_identify,NULL,NULL,hash_mask)
41-
PG_RMGR(RM_GIN_ID,"Gin",gin_redo,gin_desc,gin_identify,gin_xlog_startup,gin_xlog_cleanup,gin_mask)
42-
PG_RMGR(RM_GIST_ID,"Gist",gist_redo,gist_desc,gist_identify,gist_xlog_startup,gist_xlog_cleanup,gist_mask)
43-
PG_RMGR(RM_SEQ_ID,"Sequence",seq_redo,seq_desc,seq_identify,NULL,NULL,seq_mask)
44-
PG_RMGR(RM_SPGIST_ID,"SPGist",spg_redo,spg_desc,spg_identify,spg_xlog_startup,spg_xlog_cleanup,spg_mask)
45-
PG_RMGR(RM_BRIN_ID,"BRIN",brin_redo,brin_desc,brin_identify,NULL,NULL,brin_mask)
46-
PG_RMGR(RM_COMMIT_TS_ID,"CommitTs",commit_ts_redo,commit_ts_desc,commit_ts_identify,NULL,NULL,NULL)
47-
PG_RMGR(RM_REPLORIGIN_ID,"ReplicationOrigin",replorigin_redo,replorigin_desc,replorigin_identify,NULL,NULL,NULL)
48-
PG_RMGR(RM_GENERIC_ID,"Generic",generic_redo,generic_desc,generic_identify,NULL,NULL,generic_mask)
49-
PG_RMGR(RM_LOGICALMSG_ID,"LogicalMessage",logicalmsg_redo,logicalmsg_desc,logicalmsg_identify,NULL,NULL,NULL)
28+
PG_RMGR(RM_XLOG_ID,"XLOG",xlog_redo,xlog_desc,xlog_identify,NULL,NULL,NULL,xlog_decode)
29+
PG_RMGR(RM_XACT_ID,"Transaction",xact_redo,xact_desc,xact_identify,NULL,NULL,NULL,xact_decode)
30+
PG_RMGR(RM_SMGR_ID,"Storage",smgr_redo,smgr_desc,smgr_identify,NULL,NULL,NULL,NULL)
31+
PG_RMGR(RM_CLOG_ID,"CLOG",clog_redo,clog_desc,clog_identify,NULL,NULL,NULL,NULL)
32+
PG_RMGR(RM_DBASE_ID,"Database",dbase_redo,dbase_desc,dbase_identify,NULL,NULL,NULL,NULL)
33+
PG_RMGR(RM_TBLSPC_ID,"Tablespace",tblspc_redo,tblspc_desc,tblspc_identify,NULL,NULL,NULL,NULL)
34+
PG_RMGR(RM_MULTIXACT_ID,"MultiXact",multixact_redo,multixact_desc,multixact_identify,NULL,NULL,NULL,NULL)
35+
PG_RMGR(RM_RELMAP_ID,"RelMap",relmap_redo,relmap_desc,relmap_identify,NULL,NULL,NULL,NULL)
36+
PG_RMGR(RM_STANDBY_ID,"Standby",standby_redo,standby_desc,standby_identify,NULL,NULL,NULL,standby_decode)
37+
PG_RMGR(RM_HEAP2_ID,"Heap2",heap2_redo,heap2_desc,heap2_identify,NULL,NULL,heap_mask,heap2_decode)
38+
PG_RMGR(RM_HEAP_ID,"Heap",heap_redo,heap_desc,heap_identify,NULL,NULL,heap_mask,heap_decode)
39+
PG_RMGR(RM_BTREE_ID,"Btree",btree_redo,btree_desc,btree_identify,btree_xlog_startup,btree_xlog_cleanup,btree_mask,NULL)
40+
PG_RMGR(RM_HASH_ID,"Hash",hash_redo,hash_desc,hash_identify,NULL,NULL,hash_mask,NULL)
41+
PG_RMGR(RM_GIN_ID,"Gin",gin_redo,gin_desc,gin_identify,gin_xlog_startup,gin_xlog_cleanup,gin_mask,NULL)
42+
PG_RMGR(RM_GIST_ID,"Gist",gist_redo,gist_desc,gist_identify,gist_xlog_startup,gist_xlog_cleanup,gist_mask,NULL)
43+
PG_RMGR(RM_SEQ_ID,"Sequence",seq_redo,seq_desc,seq_identify,NULL,NULL,seq_mask,NULL)
44+
PG_RMGR(RM_SPGIST_ID,"SPGist",spg_redo,spg_desc,spg_identify,spg_xlog_startup,spg_xlog_cleanup,spg_mask,NULL)
45+
PG_RMGR(RM_BRIN_ID,"BRIN",brin_redo,brin_desc,brin_identify,NULL,NULL,brin_mask,NULL)
46+
PG_RMGR(RM_COMMIT_TS_ID,"CommitTs",commit_ts_redo,commit_ts_desc,commit_ts_identify,NULL,NULL,NULL,NULL)
47+
PG_RMGR(RM_REPLORIGIN_ID,"ReplicationOrigin",replorigin_redo,replorigin_desc,replorigin_identify,NULL,NULL,NULL,NULL)
48+
PG_RMGR(RM_GENERIC_ID,"Generic",generic_redo,generic_desc,generic_identify,NULL,NULL,generic_mask,NULL)
49+
PG_RMGR(RM_LOGICALMSG_ID,"LogicalMessage",logicalmsg_redo,logicalmsg_desc,logicalmsg_identify,NULL,NULL,NULL,logicalmsg_decode)

‎src/include/access/xlog_internal.h

Lines changed: 5 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -287,6 +287,9 @@ typedef enum
287287
RECOVERY_TARGET_ACTION_SHUTDOWN
288288
}RecoveryTargetAction;
289289

290+
structLogicalDecodingContext;
291+
structXLogRecordBuffer;
292+
290293
/*
291294
* Method table for resource managers.
292295
*
@@ -312,6 +315,8 @@ typedef struct RmgrData
312315
void(*rm_startup) (void);
313316
void(*rm_cleanup) (void);
314317
void(*rm_mask) (char*pagedata,BlockNumberblkno);
318+
void(*rm_decode) (structLogicalDecodingContext*ctx,
319+
structXLogRecordBuffer*buf);
315320
}RmgrData;
316321

317322
externconstRmgrDataRmgrTable[];

‎src/include/replication/decode.h

Lines changed: 15 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -14,7 +14,21 @@
1414
#include"replication/logical.h"
1515
#include"replication/reorderbuffer.h"
1616

17-
voidLogicalDecodingProcessRecord(LogicalDecodingContext*ctx,
17+
typedefstructXLogRecordBuffer
18+
{
19+
XLogRecPtrorigptr;
20+
XLogRecPtrendptr;
21+
XLogReaderState*record;
22+
}XLogRecordBuffer;
23+
24+
externvoidxlog_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
25+
externvoidheap_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
26+
externvoidheap2_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
27+
externvoidxact_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
28+
externvoidstandby_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
29+
externvoidlogicalmsg_decode(LogicalDecodingContext*ctx,XLogRecordBuffer*buf);
30+
31+
externvoidLogicalDecodingProcessRecord(LogicalDecodingContext*ctx,
1832
XLogReaderState*record);
1933

2034
#endif

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