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Commitd7a9943

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committed
Add relation Id map
1 parentb7d599e commitd7a9943

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6 files changed

+114
-21
lines changed

6 files changed

+114
-21
lines changed

‎contrib/mmts/Makefile‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
MODULE_big = multimaster
2-
OBJS = multimaster.o raftable.o arbiter.o bytebuf.o bgwpool.o pglogical_output.o pglogical_proto.o pglogical_receiver.o pglogical_apply.o pglogical_hooks.o pglogical_config.o ddd.o bkb.o
2+
OBJS = multimaster.o raftable.o arbiter.o bytebuf.o bgwpool.o pglogical_output.o pglogical_proto.o pglogical_receiver.o pglogical_apply.o pglogical_hooks.o pglogical_config.opglogical_relid_map.oddd.o bkb.o
33

44
overrideCPPFLAGS += -I../raftable
55

‎contrib/mmts/multimaster.h‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,11 +8,11 @@
88
#include"pglogical_output/hooks.h"
99

1010
#defineMTM_TUPLE_TRACE(fmt, ...)
11-
#if1
11+
#if0
1212
#defineMTM_INFO(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
1313
#defineMTM_TRACE(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
1414
#else
15-
#defineMTM_INFO(fmt, ...)fprintf(stderr, fmt, ## __VA_ARGS__)
15+
#defineMTM_INFO(fmt, ...)
1616
#define MTM_TRACE(fmt, ...)
1717
#endif
1818

‎contrib/mmts/pglogical_apply.c‎

Lines changed: 23 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -49,6 +49,7 @@
4949
#include"parser/parse_relation.h"
5050

5151
#include"multimaster.h"
52+
#include"pglogical_relid_map.h"
5253

5354
typedefstructTupleData
5455
{
@@ -451,19 +452,28 @@ read_rel(StringInfo s, LOCKMODE mode)
451452
intrelnamelen;
452453
intnspnamelen;
453454
RangeVar*rv;
454-
Oidrelid;
455-
456-
rv=makeNode(RangeVar);
457-
458-
nspnamelen=pq_getmsgbyte(s);
459-
rv->schemaname= (char*)pq_getmsgbytes(s,nspnamelen);
460-
461-
relnamelen=pq_getmsgbyte(s);
462-
rv->relname= (char*)pq_getmsgbytes(s,relnamelen);
463-
464-
relid=RangeVarGetRelidExtended(rv,mode, false, false,NULL,NULL);
465-
466-
returnheap_open(relid,NoLock);
455+
Oidremote_relid=pq_getmsgint(s,4);
456+
Oidlocal_relid;
457+
458+
local_relid=pglogical_relid_map_get(remote_relid);
459+
if (local_relid==InvalidOid) {
460+
rv=makeNode(RangeVar);
461+
462+
nspnamelen=pq_getmsgbyte(s);
463+
rv->schemaname= (char*)pq_getmsgbytes(s,nspnamelen);
464+
465+
relnamelen=pq_getmsgbyte(s);
466+
rv->relname= (char*)pq_getmsgbytes(s,relnamelen);
467+
468+
local_relid=RangeVarGetRelidExtended(rv,mode, false, false,NULL,NULL);
469+
pglogical_relid_map_put(remote_relid,local_relid);
470+
}else {
471+
nspnamelen=pq_getmsgbyte(s);
472+
s->cursor+=nspnamelen;
473+
relnamelen=pq_getmsgbyte(s);
474+
s->cursor+=relnamelen;
475+
}
476+
returnheap_open(local_relid,NoLock);
467477
}
468478

469479
staticvoid

‎contrib/mmts/pglogical_proto.c‎

Lines changed: 8 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -36,6 +36,7 @@
3636
#include"utils/typcache.h"
3737

3838
#include"multimaster.h"
39+
#include"pglogical_relid_map.h"
3940

4041
staticboolMtmIsFilteredTxn;
4142

@@ -71,13 +72,15 @@ pglogical_write_rel(StringInfo out, PGLogicalOutputData *data, Relation rel)
7172
uint8nspnamelen;
7273
constchar*relname;
7374
uint8relnamelen;
74-
75+
Oidrelid;
7576
if (MtmIsFilteredTxn) {
7677
return;
7778
}
7879

79-
pq_sendbyte(out,'R');/* sending RELATION */
80-
80+
relid=RelationGetRelid(rel);
81+
pq_sendbyte(out,'R');/* sending RELATION */
82+
pq_sendint(out,relid,sizeofrelid);/* use Oid as relation identifier */
83+
8184
nspname=get_namespace_name(rel->rd_rel->relnamespace);
8285
if (nspname==NULL)
8386
elog(ERROR,"cache lookup failed for namespace %u",
@@ -86,10 +89,10 @@ pglogical_write_rel(StringInfo out, PGLogicalOutputData *data, Relation rel)
8689

8790
relname=NameStr(rel->rd_rel->relname);
8891
relnamelen=strlen(relname)+1;
89-
92+
9093
pq_sendbyte(out,nspnamelen);/* schema name length */
9194
pq_sendbytes(out,nspname,nspnamelen);
92-
95+
9396
pq_sendbyte(out,relnamelen);/* table name length */
9497
pq_sendbytes(out,relname,relnamelen);
9598
}

‎contrib/mmts/pglogical_relid_map.c‎

Lines changed: 66 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,66 @@
1+
/*-------------------------------------------------------------------------
2+
*
3+
* pglogical_relid_map.c
4+
* Logical Replication map of local Oids to to remote
5+
*
6+
* Copyright (c) 2012-2015, PostgreSQL Global Development Group
7+
*
8+
* IDENTIFICATION
9+
* pglogical_relid_map.c
10+
*
11+
*-------------------------------------------------------------------------
12+
*/
13+
#include"postgres.h"
14+
#include"utils/hsearch.h"
15+
#include"pglogical_relid_map.h"
16+
17+
staticHTAB*relid_map;
18+
19+
staticvoid
20+
pglogical_relid_map_init(void)
21+
{
22+
HASHCTLctl;
23+
inthash_flags=HASH_ELEM;
24+
25+
Assert(relid_map==NULL);
26+
27+
MemSet(&ctl,0,sizeof(ctl));
28+
ctl.keysize=sizeof(Oid);
29+
ctl.entrysize=sizeof(PGLRelidMapEntry);
30+
31+
#ifPG_VERSION_NUM >=90500
32+
hash_flags |=HASH_BLOBS;
33+
#else
34+
ctl.hash=tag_hash;
35+
hash_flags |=HASH_FUNCTION;
36+
#endif
37+
38+
relid_map=hash_create("pglogical_relid_map",PGL_INIT_RELID_MAP_SIZE,&ctl,hash_flags);
39+
40+
Assert(relid_map!=NULL);
41+
}
42+
43+
Oidpglogical_relid_map_get(Oidrelid)
44+
{
45+
if (relid_map!=NULL) {
46+
PGLRelidMapEntry*entry= (PGLRelidMapEntry*)hash_search(relid_map,&relid,HASH_FIND,NULL);
47+
returnentry ?entry->local_relid :InvalidOid;
48+
}
49+
returnInvalidOid;
50+
}
51+
52+
boolpglogical_relid_map_put(Oidremote_relid,Oidlocal_relid)
53+
{
54+
boolfound;
55+
PGLRelidMapEntry*entry;
56+
if (relid_map==NULL) {
57+
pglogical_relid_map_init();
58+
}
59+
entry=hash_search(relid_map,&remote_relid,HASH_ENTER,&found);
60+
if (found) {
61+
Assert(entry->local_relid==local_relid);
62+
return false;
63+
}
64+
entry->local_relid=local_relid;
65+
return true;
66+
}

‎contrib/mmts/pglogical_relid_map.h‎

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,14 @@
1+
#ifndefPGLOGICAL_RELID_MAP
2+
#definePGLOGICAL_RELID_MAP
3+
4+
#definePGL_INIT_RELID_MAP_SIZE 256
5+
6+
typedefstructPGLRelidMapEntry {
7+
Oidremote_relid;
8+
Oidlocal_relid;
9+
}PGLRelidMapEntry;
10+
11+
externOidpglogical_relid_map_get(Oidrelid);
12+
externboolpglogical_relid_map_put(Oidremote_relid,Oidlocal_relid);
13+
14+
#endif

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