PostgreSQL Source Code  git master
proto.c File Reference
#include "postgres.h"
#include "access/sysattr.h"
#include "catalog/pg_namespace.h"
#include "catalog/pg_type.h"
#include "libpq/pqformat.h"
#include "replication/logicalproto.h"
#include "utils/builtins.h"
#include "utils/lsyscache.h"
#include "utils/syscache.h"
Include dependency graph for proto.c:

Go to the source code of this file.

Macros

#define LOGICALREP_IS_REPLICA_IDENTITY   1
 
#define TRUNCATE_CASCADE   (1<<0)
 
#define TRUNCATE_RESTART_SEQS   (1<<1)
 

Functions

static void logicalrep_write_attrs (StringInfo out, Relation rel)
 
static void logicalrep_write_tuple (StringInfo out, Relation rel, HeapTuple tuple)
 
static void logicalrep_read_attrs (StringInfo in, LogicalRepRelation *rel)
 
static void logicalrep_read_tuple (StringInfo in, LogicalRepTupleData *tuple)
 
static void logicalrep_write_namespace (StringInfo out, Oid nspid)
 
static const char * logicalrep_read_namespace (StringInfo in)
 
void logicalrep_write_begin (StringInfo out, ReorderBufferTXN *txn)
 
void logicalrep_read_begin (StringInfo in, LogicalRepBeginData *begin_data)
 
void logicalrep_write_commit (StringInfo out, ReorderBufferTXN *txn, XLogRecPtr commit_lsn)
 
void logicalrep_read_commit (StringInfo in, LogicalRepCommitData *commit_data)
 
void logicalrep_write_origin (StringInfo out, const char *origin, XLogRecPtr origin_lsn)
 
char * logicalrep_read_origin (StringInfo in, XLogRecPtr *origin_lsn)
 
void logicalrep_write_insert (StringInfo out, Relation rel, HeapTuple newtuple)
 
LogicalRepRelId logicalrep_read_insert (StringInfo in, LogicalRepTupleData *newtup)
 
void logicalrep_write_update (StringInfo out, Relation rel, HeapTuple oldtuple, HeapTuple newtuple)
 
LogicalRepRelId logicalrep_read_update (StringInfo in, bool *has_oldtuple, LogicalRepTupleData *oldtup, LogicalRepTupleData *newtup)
 
void logicalrep_write_delete (StringInfo out, Relation rel, HeapTuple oldtuple)
 
LogicalRepRelId logicalrep_read_delete (StringInfo in, LogicalRepTupleData *oldtup)
 
void logicalrep_write_truncate (StringInfo out, int nrelids, Oid relids[], bool cascade, bool restart_seqs)
 
Listlogicalrep_read_truncate (StringInfo in, bool *cascade, bool *restart_seqs)
 
void logicalrep_write_rel (StringInfo out, Relation rel)
 
LogicalRepRelationlogicalrep_read_rel (StringInfo in)
 
void logicalrep_write_typ (StringInfo out, Oid typoid)
 
void logicalrep_read_typ (StringInfo in, LogicalRepTyp *ltyp)
 

Macro Definition Documentation

◆ LOGICALREP_IS_REPLICA_IDENTITY

#define LOGICALREP_IS_REPLICA_IDENTITY   1

Definition at line 27 of file proto.c.

Referenced by logicalrep_read_attrs(), and logicalrep_write_attrs().

◆ TRUNCATE_CASCADE

#define TRUNCATE_CASCADE   (1<<0)

Definition at line 29 of file proto.c.

Referenced by logicalrep_read_truncate(), and logicalrep_write_truncate().

◆ TRUNCATE_RESTART_SEQS

#define TRUNCATE_RESTART_SEQS   (1<<1)

Definition at line 30 of file proto.c.

Referenced by logicalrep_read_truncate(), and logicalrep_write_truncate().

Function Documentation

◆ logicalrep_read_attrs()

static void logicalrep_read_attrs ( StringInfo  in,
LogicalRepRelation rel 
)
static

Definition at line 617 of file proto.c.

References LogicalRepRelation::attkeys, LogicalRepRelation::attnames, LogicalRepRelation::atttyps, bms_add_member(), i, LOGICALREP_IS_REPLICA_IDENTITY, LogicalRepRelation::natts, palloc(), pq_getmsgbyte(), pq_getmsgint(), pq_getmsgstring(), and pstrdup().

Referenced by logicalrep_read_rel().

618 {
619  int i;
620  int natts;
621  char **attnames;
622  Oid *atttyps;
623  Bitmapset *attkeys = NULL;
624 
625  natts = pq_getmsgint(in, 2);
626  attnames = palloc(natts * sizeof(char *));
627  atttyps = palloc(natts * sizeof(Oid));
628 
629  /* read the attributes */
630  for (i = 0; i < natts; i++)
631  {
632  uint8 flags;
633 
634  /* Check for replica identity column */
635  flags = pq_getmsgbyte(in);
636  if (flags & LOGICALREP_IS_REPLICA_IDENTITY)
637  attkeys = bms_add_member(attkeys, i);
638 
639  /* attribute name */
640  attnames[i] = pstrdup(pq_getmsgstring(in));
641 
642  /* attribute type id */
643  atttyps[i] = (Oid) pq_getmsgint(in, 4);
644 
645  /* we ignore attribute mode for now */
646  (void) pq_getmsgint(in, 4);
647  }
648 
649  rel->attnames = attnames;
650  rel->atttyps = atttyps;
651  rel->attkeys = attkeys;
652  rel->natts = natts;
653 }
const char * pq_getmsgstring(StringInfo msg)
Definition: pqformat.c:581
char * pstrdup(const char *in)
Definition: mcxt.c:1186
unsigned char uint8
Definition: c.h:365
unsigned int Oid
Definition: postgres_ext.h:31
Bitmapset * attkeys
Definition: logicalproto.h:52
#define LOGICALREP_IS_REPLICA_IDENTITY
Definition: proto.c:27
int pq_getmsgbyte(StringInfo msg)
Definition: pqformat.c:401
Bitmapset * bms_add_member(Bitmapset *a, int x)
Definition: bitmapset.c:736
void * palloc(Size size)
Definition: mcxt.c:949
int i
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:417

◆ logicalrep_read_begin()

void logicalrep_read_begin ( StringInfo  in,
LogicalRepBeginData begin_data 
)

Definition at line 60 of file proto.c.

References LogicalRepBeginData::committime, elog, ERROR, LogicalRepBeginData::final_lsn, InvalidXLogRecPtr, pq_getmsgint(), pq_getmsgint64(), and LogicalRepBeginData::xid.

Referenced by apply_handle_begin().

61 {
62  /* read fields */
63  begin_data->final_lsn = pq_getmsgint64(in);
64  if (begin_data->final_lsn == InvalidXLogRecPtr)
65  elog(ERROR, "final_lsn not set in begin message");
66  begin_data->committime = pq_getmsgint64(in);
67  begin_data->xid = pq_getmsgint(in, 4);
68 }
TransactionId xid
Definition: logicalproto.h:68
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
#define ERROR
Definition: elog.h:43
XLogRecPtr final_lsn
Definition: logicalproto.h:66
#define elog(elevel,...)
Definition: elog.h:228
int64 pq_getmsgint64(StringInfo msg)
Definition: pqformat.c:455
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:417
TimestampTz committime
Definition: logicalproto.h:67

◆ logicalrep_read_commit()

void logicalrep_read_commit ( StringInfo  in,
LogicalRepCommitData commit_data 
)

Definition at line 95 of file proto.c.

References LogicalRepCommitData::commit_lsn, LogicalRepCommitData::committime, elog, LogicalRepCommitData::end_lsn, ERROR, pq_getmsgbyte(), and pq_getmsgint64().

Referenced by apply_handle_commit().

96 {
97  /* read flags (unused for now) */
98  uint8 flags = pq_getmsgbyte(in);
99 
100  if (flags != 0)
101  elog(ERROR, "unrecognized flags %u in commit message", flags);
102 
103  /* read fields */
104  commit_data->commit_lsn = pq_getmsgint64(in);
105  commit_data->end_lsn = pq_getmsgint64(in);
106  commit_data->committime = pq_getmsgint64(in);
107 }
unsigned char uint8
Definition: c.h:365
#define ERROR
Definition: elog.h:43
int pq_getmsgbyte(StringInfo msg)
Definition: pqformat.c:401
#define elog(elevel,...)
Definition: elog.h:228
int64 pq_getmsgint64(StringInfo msg)
Definition: pqformat.c:455
XLogRecPtr commit_lsn
Definition: logicalproto.h:73
TimestampTz committime
Definition: logicalproto.h:75

◆ logicalrep_read_delete()

LogicalRepRelId logicalrep_read_delete ( StringInfo  in,
LogicalRepTupleData oldtup 
)

Definition at line 276 of file proto.c.

References generate_unaccent_rules::action, elog, ERROR, logicalrep_read_tuple(), pq_getmsgbyte(), and pq_getmsgint().

Referenced by apply_handle_delete().

277 {
278  char action;
279  LogicalRepRelId relid;
280 
281  /* read the relation id */
282  relid = pq_getmsgint(in, 4);
283 
284  /* read and verify action */
285  action = pq_getmsgbyte(in);
286  if (action != 'K' && action != 'O')
287  elog(ERROR, "expected action 'O' or 'K', got %c", action);
288 
289  logicalrep_read_tuple(in, oldtup);
290 
291  return relid;
292 }
#define ERROR
Definition: elog.h:43
static void logicalrep_read_tuple(StringInfo in, LogicalRepTupleData *tuple)
Definition: proto.c:507
int pq_getmsgbyte(StringInfo msg)
Definition: pqformat.c:401
#define elog(elevel,...)
Definition: elog.h:228
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:417
uint32 LogicalRepRelId
Definition: logicalproto.h:39

◆ logicalrep_read_insert()

LogicalRepRelId logicalrep_read_insert ( StringInfo  in,
LogicalRepTupleData newtup 
)

Definition at line 159 of file proto.c.

References generate_unaccent_rules::action, elog, ERROR, logicalrep_read_tuple(), pq_getmsgbyte(), and pq_getmsgint().

Referenced by apply_handle_insert().

160 {
161  char action;
162  LogicalRepRelId relid;
163 
164  /* read the relation id */
165  relid = pq_getmsgint(in, 4);
166 
167  action = pq_getmsgbyte(in);
168  if (action != 'N')
169  elog(ERROR, "expected new tuple but got %d",
170  action);
171 
172  logicalrep_read_tuple(in, newtup);
173 
174  return relid;
175 }
#define ERROR
Definition: elog.h:43
static void logicalrep_read_tuple(StringInfo in, LogicalRepTupleData *tuple)
Definition: proto.c:507
int pq_getmsgbyte(StringInfo msg)
Definition: pqformat.c:401
#define elog(elevel,...)
Definition: elog.h:228
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:417
uint32 LogicalRepRelId
Definition: logicalproto.h:39

◆ logicalrep_read_namespace()

static const char * logicalrep_read_namespace ( StringInfo  in)
static

Definition at line 679 of file proto.c.

References pq_getmsgstring().

Referenced by logicalrep_read_rel(), and logicalrep_read_typ().

680 {
681  const char *nspname = pq_getmsgstring(in);
682 
683  if (nspname[0] == '\0')
684  nspname = "pg_catalog";
685 
686  return nspname;
687 }
const char * pq_getmsgstring(StringInfo msg)
Definition: pqformat.c:581

◆ logicalrep_read_origin()

char* logicalrep_read_origin ( StringInfo  in,
XLogRecPtr origin_lsn 
)

Definition at line 129 of file proto.c.

References pq_getmsgint64(), pq_getmsgstring(), and pstrdup().

130 {
131  /* fixed fields */
132  *origin_lsn = pq_getmsgint64(in);
133 
134  /* return origin */
135  return pstrdup(pq_getmsgstring(in));
136 }
const char * pq_getmsgstring(StringInfo msg)
Definition: pqformat.c:581
char * pstrdup(const char *in)
Definition: mcxt.c:1186
int64 pq_getmsgint64(StringInfo msg)
Definition: pqformat.c:455

◆ logicalrep_read_rel()

LogicalRepRelation* logicalrep_read_rel ( StringInfo  in)

Definition at line 375 of file proto.c.

References logicalrep_read_attrs(), logicalrep_read_namespace(), LogicalRepRelation::nspname, palloc(), pq_getmsgbyte(), pq_getmsgint(), pq_getmsgstring(), pstrdup(), LogicalRepRelation::relname, LogicalRepRelation::remoteid, and LogicalRepRelation::replident.

Referenced by apply_handle_relation().

376 {
378 
379  rel->remoteid = pq_getmsgint(in, 4);
380 
381  /* Read relation name from stream */
383  rel->relname = pstrdup(pq_getmsgstring(in));
384 
385  /* Read the replica identity. */
386  rel->replident = pq_getmsgbyte(in);
387 
388  /* Get attribute description */
389  logicalrep_read_attrs(in, rel);
390 
391  return rel;
392 }
const char * pq_getmsgstring(StringInfo msg)
Definition: pqformat.c:581
char * pstrdup(const char *in)
Definition: mcxt.c:1186
LogicalRepRelId remoteid
Definition: logicalproto.h:45
static void logicalrep_read_attrs(StringInfo in, LogicalRepRelation *rel)
Definition: proto.c:617
static const char * logicalrep_read_namespace(StringInfo in)
Definition: proto.c:679
int pq_getmsgbyte(StringInfo msg)
Definition: pqformat.c:401
void * palloc(Size size)
Definition: mcxt.c:949
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:417

◆ logicalrep_read_truncate()

List* logicalrep_read_truncate ( StringInfo  in,
bool cascade,
bool restart_seqs 
)

Definition at line 325 of file proto.c.

References i, lappend_oid(), NIL, pq_getmsgint(), TRUNCATE_CASCADE, and TRUNCATE_RESTART_SEQS.

Referenced by apply_handle_truncate().

327 {
328  int i;
329  int nrelids;
330  List *relids = NIL;
331  uint8 flags;
332 
333  nrelids = pq_getmsgint(in, 4);
334 
335  /* read and decode truncate flags */
336  flags = pq_getmsgint(in, 1);
337  *cascade = (flags & TRUNCATE_CASCADE) > 0;
338  *restart_seqs = (flags & TRUNCATE_RESTART_SEQS) > 0;
339 
340  for (i = 0; i < nrelids; i++)
341  relids = lappend_oid(relids, pq_getmsgint(in, 4));
342 
343  return relids;
344 }
#define NIL
Definition: pg_list.h:65
unsigned char uint8
Definition: c.h:365
List * lappend_oid(List *list, Oid datum)
Definition: list.c:358
int i
#define TRUNCATE_CASCADE
Definition: proto.c:29
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:417
Definition: pg_list.h:50
#define TRUNCATE_RESTART_SEQS
Definition: proto.c:30

◆ logicalrep_read_tuple()

static void logicalrep_read_tuple ( StringInfo  in,
LogicalRepTupleData tuple 
)
static

Definition at line 507 of file proto.c.

References LogicalRepTupleData::changed, elog, ERROR, i, palloc(), pq_copymsgbytes(), pq_getmsgbyte(), pq_getmsgint(), and LogicalRepTupleData::values.

Referenced by logicalrep_read_delete(), logicalrep_read_insert(), and logicalrep_read_update().

508 {
509  int i;
510  int natts;
511 
512  /* Get number of attributes */
513  natts = pq_getmsgint(in, 2);
514 
515  memset(tuple->changed, 0, sizeof(tuple->changed));
516 
517  /* Read the data */
518  for (i = 0; i < natts; i++)
519  {
520  char kind;
521 
522  kind = pq_getmsgbyte(in);
523 
524  switch (kind)
525  {
526  case 'n': /* null */
527  tuple->values[i] = NULL;
528  tuple->changed[i] = true;
529  break;
530  case 'u': /* unchanged column */
531  /* we don't receive the value of an unchanged column */
532  tuple->values[i] = NULL;
533  break;
534  case 't': /* text formatted value */
535  {
536  int len;
537 
538  tuple->changed[i] = true;
539 
540  len = pq_getmsgint(in, 4); /* read length */
541 
542  /* and data */
543  tuple->values[i] = palloc(len + 1);
544  pq_copymsgbytes(in, tuple->values[i], len);
545  tuple->values[i][len] = '\0';
546  }
547  break;
548  default:
549  elog(ERROR, "unrecognized data representation type '%c'", kind);
550  }
551  }
552 }
#define ERROR
Definition: elog.h:43
bool changed[MaxTupleAttributeNumber]
Definition: logicalproto.h:36
int pq_getmsgbyte(StringInfo msg)
Definition: pqformat.c:401
void pq_copymsgbytes(StringInfo msg, char *buf, int datalen)
Definition: pqformat.c:530
char * values[MaxTupleAttributeNumber]
Definition: logicalproto.h:34
void * palloc(Size size)
Definition: mcxt.c:949
#define elog(elevel,...)
Definition: elog.h:228
int i
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:417

◆ logicalrep_read_typ()

void logicalrep_read_typ ( StringInfo  in,
LogicalRepTyp ltyp 
)

Definition at line 427 of file proto.c.

References logicalrep_read_namespace(), LogicalRepTyp::nspname, pq_getmsgint(), pq_getmsgstring(), pstrdup(), LogicalRepTyp::remoteid, and LogicalRepTyp::typname.

Referenced by apply_handle_type().

428 {
429  ltyp->remoteid = pq_getmsgint(in, 4);
430 
431  /* Read type name from stream */
433  ltyp->typname = pstrdup(pq_getmsgstring(in));
434 }
char * typname
Definition: logicalproto.h:60
const char * pq_getmsgstring(StringInfo msg)
Definition: pqformat.c:581
char * pstrdup(const char *in)
Definition: mcxt.c:1186
static const char * logicalrep_read_namespace(StringInfo in)
Definition: proto.c:679
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:417
char * nspname
Definition: logicalproto.h:59

◆ logicalrep_read_update()

LogicalRepRelId logicalrep_read_update ( StringInfo  in,
bool has_oldtuple,
LogicalRepTupleData oldtup,
LogicalRepTupleData newtup 
)

Definition at line 210 of file proto.c.

References generate_unaccent_rules::action, elog, ERROR, logicalrep_read_tuple(), pq_getmsgbyte(), and pq_getmsgint().

Referenced by apply_handle_update().

213 {
214  char action;
215  LogicalRepRelId relid;
216 
217  /* read the relation id */
218  relid = pq_getmsgint(in, 4);
219 
220  /* read and verify action */
221  action = pq_getmsgbyte(in);
222  if (action != 'K' && action != 'O' && action != 'N')
223  elog(ERROR, "expected action 'N', 'O' or 'K', got %c",
224  action);
225 
226  /* check for old tuple */
227  if (action == 'K' || action == 'O')
228  {
229  logicalrep_read_tuple(in, oldtup);
230  *has_oldtuple = true;
231 
232  action = pq_getmsgbyte(in);
233  }
234  else
235  *has_oldtuple = false;
236 
237  /* check for new tuple */
238  if (action != 'N')
239  elog(ERROR, "expected action 'N', got %c",
240  action);
241 
242  logicalrep_read_tuple(in, newtup);
243 
244  return relid;
245 }
#define ERROR
Definition: elog.h:43
static void logicalrep_read_tuple(StringInfo in, LogicalRepTupleData *tuple)
Definition: proto.c:507
int pq_getmsgbyte(StringInfo msg)
Definition: pqformat.c:401
#define elog(elevel,...)
Definition: elog.h:228
unsigned int pq_getmsgint(StringInfo msg, int b)
Definition: pqformat.c:417
uint32 LogicalRepRelId
Definition: logicalproto.h:39

◆ logicalrep_write_attrs()

static void logicalrep_write_attrs ( StringInfo  out,
Relation  rel 
)
static

Definition at line 558 of file proto.c.

References bms_free(), bms_is_member(), FirstLowInvalidHeapAttributeNumber, i, INDEX_ATTR_BITMAP_IDENTITY_KEY, LOGICALREP_IS_REPLICA_IDENTITY, NameStr, TupleDescData::natts, pq_sendbyte(), pq_sendint16(), pq_sendint32(), pq_sendstring(), RelationData::rd_rel, RelationGetDescr, RelationGetIndexAttrBitmap(), and TupleDescAttr.

Referenced by logicalrep_write_rel().

559 {
560  TupleDesc desc;
561  int i;
562  uint16 nliveatts = 0;
563  Bitmapset *idattrs = NULL;
564  bool replidentfull;
565 
566  desc = RelationGetDescr(rel);
567 
568  /* send number of live attributes */
569  for (i = 0; i < desc->natts; i++)
570  {
571  if (TupleDescAttr(desc, i)->attisdropped || TupleDescAttr(desc, i)->attgenerated)
572  continue;
573  nliveatts++;
574  }
575  pq_sendint16(out, nliveatts);
576 
577  /* fetch bitmap of REPLICATION IDENTITY attributes */
578  replidentfull = (rel->rd_rel->relreplident == REPLICA_IDENTITY_FULL);
579  if (!replidentfull)
580  idattrs = RelationGetIndexAttrBitmap(rel,
582 
583  /* send the attributes */
584  for (i = 0; i < desc->natts; i++)
585  {
586  Form_pg_attribute att = TupleDescAttr(desc, i);
587  uint8 flags = 0;
588 
589  if (att->attisdropped || att->attgenerated)
590  continue;
591 
592  /* REPLICA IDENTITY FULL means all columns are sent as part of key. */
593  if (replidentfull ||
595  idattrs))
597 
598  pq_sendbyte(out, flags);
599 
600  /* attribute name */
601  pq_sendstring(out, NameStr(att->attname));
602 
603  /* attribute type id */
604  pq_sendint32(out, (int) att->atttypid);
605 
606  /* attribute mode */
607  pq_sendint32(out, att->atttypmod);
608  }
609 
610  bms_free(idattrs);
611 }
static void pq_sendint16(StringInfo buf, uint16 i)
Definition: pqformat.h:137
#define RelationGetDescr(relation)
Definition: rel.h:454
#define TupleDescAttr(tupdesc, i)
Definition: tupdesc.h:92
unsigned char uint8
Definition: c.h:365
#define FirstLowInvalidHeapAttributeNumber
Definition: sysattr.h:27
void pq_sendstring(StringInfo buf, const char *str)
Definition: pqformat.c:197
Form_pg_class rd_rel
Definition: rel.h:84
#define LOGICALREP_IS_REPLICA_IDENTITY
Definition: proto.c:27
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
static void pq_sendint32(StringInfo buf, uint32 i)
Definition: pqformat.h:145
unsigned short uint16
Definition: c.h:366
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:200
void bms_free(Bitmapset *a)
Definition: bitmapset.c:208
int i
Bitmapset * RelationGetIndexAttrBitmap(Relation relation, IndexAttrBitmapKind attrKind)
Definition: relcache.c:4763
#define NameStr(name)
Definition: c.h:615
bool bms_is_member(int x, const Bitmapset *a)
Definition: bitmapset.c:427

◆ logicalrep_write_begin()

void logicalrep_write_begin ( StringInfo  out,
ReorderBufferTXN txn 
)

Definition at line 46 of file proto.c.

References ReorderBufferTXN::commit_time, ReorderBufferTXN::final_lsn, pq_sendbyte(), pq_sendint32(), pq_sendint64(), and ReorderBufferTXN::xid.

Referenced by pgoutput_begin_txn().

47 {
48  pq_sendbyte(out, 'B'); /* BEGIN */
49 
50  /* fixed fields */
51  pq_sendint64(out, txn->final_lsn);
52  pq_sendint64(out, txn->commit_time);
53  pq_sendint32(out, txn->xid);
54 }
TimestampTz commit_time
static void pq_sendint64(StringInfo buf, uint64 i)
Definition: pqformat.h:153
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
static void pq_sendint32(StringInfo buf, uint32 i)
Definition: pqformat.h:145
XLogRecPtr final_lsn
TransactionId xid

◆ logicalrep_write_commit()

void logicalrep_write_commit ( StringInfo  out,
ReorderBufferTXN txn,
XLogRecPtr  commit_lsn 
)

Definition at line 75 of file proto.c.

References ReorderBufferTXN::commit_time, ReorderBufferTXN::end_lsn, pq_sendbyte(), and pq_sendint64().

Referenced by pgoutput_commit_txn().

77 {
78  uint8 flags = 0;
79 
80  pq_sendbyte(out, 'C'); /* sending COMMIT */
81 
82  /* send the flags field (unused for now) */
83  pq_sendbyte(out, flags);
84 
85  /* send fields */
86  pq_sendint64(out, commit_lsn);
87  pq_sendint64(out, txn->end_lsn);
88  pq_sendint64(out, txn->commit_time);
89 }
TimestampTz commit_time
unsigned char uint8
Definition: c.h:365
static void pq_sendint64(StringInfo buf, uint64 i)
Definition: pqformat.h:153
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
XLogRecPtr end_lsn

◆ logicalrep_write_delete()

void logicalrep_write_delete ( StringInfo  out,
Relation  rel,
HeapTuple  oldtuple 
)

Definition at line 251 of file proto.c.

References Assert, logicalrep_write_tuple(), pq_sendbyte(), pq_sendint32(), RelationData::rd_rel, and RelationGetRelid.

Referenced by pgoutput_change().

252 {
253  Assert(rel->rd_rel->relreplident == REPLICA_IDENTITY_DEFAULT ||
254  rel->rd_rel->relreplident == REPLICA_IDENTITY_FULL ||
255  rel->rd_rel->relreplident == REPLICA_IDENTITY_INDEX);
256 
257  pq_sendbyte(out, 'D'); /* action DELETE */
258 
259  /* use Oid as relation identifier */
260  pq_sendint32(out, RelationGetRelid(rel));
261 
262  if (rel->rd_rel->relreplident == REPLICA_IDENTITY_FULL)
263  pq_sendbyte(out, 'O'); /* old tuple follows */
264  else
265  pq_sendbyte(out, 'K'); /* old key follows */
266 
267  logicalrep_write_tuple(out, rel, oldtuple);
268 }
Form_pg_class rd_rel
Definition: rel.h:84
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
static void pq_sendint32(StringInfo buf, uint32 i)
Definition: pqformat.h:145
#define Assert(condition)
Definition: c.h:738
#define RelationGetRelid(relation)
Definition: rel.h:428
static void logicalrep_write_tuple(StringInfo out, Relation rel, HeapTuple tuple)
Definition: proto.c:440

◆ logicalrep_write_insert()

void logicalrep_write_insert ( StringInfo  out,
Relation  rel,
HeapTuple  newtuple 
)

Definition at line 142 of file proto.c.

References logicalrep_write_tuple(), pq_sendbyte(), pq_sendint32(), and RelationGetRelid.

Referenced by pgoutput_change().

143 {
144  pq_sendbyte(out, 'I'); /* action INSERT */
145 
146  /* use Oid as relation identifier */
147  pq_sendint32(out, RelationGetRelid(rel));
148 
149  pq_sendbyte(out, 'N'); /* new tuple follows */
150  logicalrep_write_tuple(out, rel, newtuple);
151 }
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
static void pq_sendint32(StringInfo buf, uint32 i)
Definition: pqformat.h:145
#define RelationGetRelid(relation)
Definition: rel.h:428
static void logicalrep_write_tuple(StringInfo out, Relation rel, HeapTuple tuple)
Definition: proto.c:440

◆ logicalrep_write_namespace()

static void logicalrep_write_namespace ( StringInfo  out,
Oid  nspid 
)
static

Definition at line 659 of file proto.c.

References elog, ERROR, get_namespace_name(), pq_sendbyte(), and pq_sendstring().

Referenced by logicalrep_write_rel(), and logicalrep_write_typ().

660 {
661  if (nspid == PG_CATALOG_NAMESPACE)
662  pq_sendbyte(out, '\0');
663  else
664  {
665  char *nspname = get_namespace_name(nspid);
666 
667  if (nspname == NULL)
668  elog(ERROR, "cache lookup failed for namespace %u",
669  nspid);
670 
671  pq_sendstring(out, nspname);
672  }
673 }
void pq_sendstring(StringInfo buf, const char *str)
Definition: pqformat.c:197
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
#define ERROR
Definition: elog.h:43
char * get_namespace_name(Oid nspid)
Definition: lsyscache.c:3094
#define elog(elevel,...)
Definition: elog.h:228

◆ logicalrep_write_origin()

void logicalrep_write_origin ( StringInfo  out,
const char *  origin,
XLogRecPtr  origin_lsn 
)

Definition at line 113 of file proto.c.

References pq_sendbyte(), pq_sendint64(), and pq_sendstring().

Referenced by pgoutput_begin_txn().

115 {
116  pq_sendbyte(out, 'O'); /* ORIGIN */
117 
118  /* fixed fields */
119  pq_sendint64(out, origin_lsn);
120 
121  /* origin string */
122  pq_sendstring(out, origin);
123 }
void pq_sendstring(StringInfo buf, const char *str)
Definition: pqformat.c:197
static void pq_sendint64(StringInfo buf, uint64 i)
Definition: pqformat.h:153
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161

◆ logicalrep_write_rel()

void logicalrep_write_rel ( StringInfo  out,
Relation  rel 
)

Definition at line 350 of file proto.c.

References logicalrep_write_attrs(), logicalrep_write_namespace(), pq_sendbyte(), pq_sendint32(), pq_sendstring(), RelationData::rd_rel, RelationGetNamespace, RelationGetRelationName, RelationGetRelid, and relname.

Referenced by maybe_send_schema().

351 {
352  char *relname;
353 
354  pq_sendbyte(out, 'R'); /* sending RELATION */
355 
356  /* use Oid as relation identifier */
357  pq_sendint32(out, RelationGetRelid(rel));
358 
359  /* send qualified relation name */
361  relname = RelationGetRelationName(rel);
362  pq_sendstring(out, relname);
363 
364  /* send replica identity */
365  pq_sendbyte(out, rel->rd_rel->relreplident);
366 
367  /* send the attribute info */
368  logicalrep_write_attrs(out, rel);
369 }
static void logicalrep_write_namespace(StringInfo out, Oid nspid)
Definition: proto.c:659
void pq_sendstring(StringInfo buf, const char *str)
Definition: pqformat.c:197
Form_pg_class rd_rel
Definition: rel.h:84
NameData relname
Definition: pg_class.h:38
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
static void pq_sendint32(StringInfo buf, uint32 i)
Definition: pqformat.h:145
static void logicalrep_write_attrs(StringInfo out, Relation rel)
Definition: proto.c:558
#define RelationGetRelationName(relation)
Definition: rel.h:462
#define RelationGetRelid(relation)
Definition: rel.h:428
#define RelationGetNamespace(relation)
Definition: rel.h:469

◆ logicalrep_write_truncate()

void logicalrep_write_truncate ( StringInfo  out,
int  nrelids,
Oid  relids[],
bool  cascade,
bool  restart_seqs 
)

Definition at line 298 of file proto.c.

References i, pq_sendbyte(), pq_sendint32(), pq_sendint8(), TRUNCATE_CASCADE, and TRUNCATE_RESTART_SEQS.

Referenced by pgoutput_truncate().

302 {
303  int i;
304  uint8 flags = 0;
305 
306  pq_sendbyte(out, 'T'); /* action TRUNCATE */
307 
308  pq_sendint32(out, nrelids);
309 
310  /* encode and send truncate flags */
311  if (cascade)
312  flags |= TRUNCATE_CASCADE;
313  if (restart_seqs)
314  flags |= TRUNCATE_RESTART_SEQS;
315  pq_sendint8(out, flags);
316 
317  for (i = 0; i < nrelids; i++)
318  pq_sendint32(out, relids[i]);
319 }
unsigned char uint8
Definition: c.h:365
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
static void pq_sendint32(StringInfo buf, uint32 i)
Definition: pqformat.h:145
int i
#define TRUNCATE_CASCADE
Definition: proto.c:29
static void pq_sendint8(StringInfo buf, uint8 i)
Definition: pqformat.h:129
#define TRUNCATE_RESTART_SEQS
Definition: proto.c:30

◆ logicalrep_write_tuple()

static void logicalrep_write_tuple ( StringInfo  out,
Relation  rel,
HeapTuple  tuple 
)
static

Definition at line 440 of file proto.c.

References elog, enlargeStringInfo(), ERROR, GETSTRUCT, heap_deform_tuple(), HeapTupleIsValid, i, MaxTupleAttributeNumber, TupleDescData::natts, ObjectIdGetDatum, OidOutputFunctionCall(), pfree(), pq_sendbyte(), pq_sendcountedtext(), pq_sendint16(), RelationGetDescr, ReleaseSysCache(), SearchSysCache1(), HeapTupleData::t_len, TupleDescAttr, TYPEOID, values, and VARATT_IS_EXTERNAL_ONDISK.

Referenced by logicalrep_write_delete(), logicalrep_write_insert(), and logicalrep_write_update().

441 {
442  TupleDesc desc;
444  bool isnull[MaxTupleAttributeNumber];
445  int i;
446  uint16 nliveatts = 0;
447 
448  desc = RelationGetDescr(rel);
449 
450  for (i = 0; i < desc->natts; i++)
451  {
452  if (TupleDescAttr(desc, i)->attisdropped || TupleDescAttr(desc, i)->attgenerated)
453  continue;
454  nliveatts++;
455  }
456  pq_sendint16(out, nliveatts);
457 
458  /* try to allocate enough memory from the get-go */
459  enlargeStringInfo(out, tuple->t_len +
460  nliveatts * (1 + 4));
461 
462  heap_deform_tuple(tuple, desc, values, isnull);
463 
464  /* Write the values */
465  for (i = 0; i < desc->natts; i++)
466  {
467  HeapTuple typtup;
468  Form_pg_type typclass;
469  Form_pg_attribute att = TupleDescAttr(desc, i);
470  char *outputstr;
471 
472  if (att->attisdropped || att->attgenerated)
473  continue;
474 
475  if (isnull[i])
476  {
477  pq_sendbyte(out, 'n'); /* null column */
478  continue;
479  }
480  else if (att->attlen == -1 && VARATT_IS_EXTERNAL_ONDISK(values[i]))
481  {
482  pq_sendbyte(out, 'u'); /* unchanged toast column */
483  continue;
484  }
485 
486  typtup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(att->atttypid));
487  if (!HeapTupleIsValid(typtup))
488  elog(ERROR, "cache lookup failed for type %u", att->atttypid);
489  typclass = (Form_pg_type) GETSTRUCT(typtup);
490 
491  pq_sendbyte(out, 't'); /* 'text' data follows */
492 
493  outputstr = OidOutputFunctionCall(typclass->typoutput, values[i]);
494  pq_sendcountedtext(out, outputstr, strlen(outputstr), false);
495  pfree(outputstr);
496 
497  ReleaseSysCache(typtup);
498  }
499 }
static void pq_sendint16(StringInfo buf, uint16 i)
Definition: pqformat.h:137
#define VARATT_IS_EXTERNAL_ONDISK(PTR)
Definition: postgres.h:314
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
#define MaxTupleAttributeNumber
Definition: htup_details.h:33
#define RelationGetDescr(relation)
Definition: rel.h:454
#define TupleDescAttr(tupdesc, i)
Definition: tupdesc.h:92
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
unsigned short uint16
Definition: c.h:366
void pfree(void *pointer)
Definition: mcxt.c:1056
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
uint32 t_len
Definition: htup.h:64
void enlargeStringInfo(StringInfo str, int needed)
Definition: stringinfo.c:283
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:200
void pq_sendcountedtext(StringInfo buf, const char *str, int slen, bool countincludesself)
Definition: pqformat.c:142
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1116
uintptr_t Datum
Definition: postgres.h:367
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1164
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
FormData_pg_type * Form_pg_type
Definition: pg_type.h:250
void heap_deform_tuple(HeapTuple tuple, TupleDesc tupleDesc, Datum *values, bool *isnull)
Definition: heaptuple.c:1249
static Datum values[MAXATTR]
Definition: bootstrap.c:167
char * OidOutputFunctionCall(Oid functionId, Datum val)
Definition: fmgr.c:1655
#define elog(elevel,...)
Definition: elog.h:228
int i

◆ logicalrep_write_typ()

void logicalrep_write_typ ( StringInfo  out,
Oid  typoid 
)

Definition at line 400 of file proto.c.

References elog, ERROR, getBaseType(), GETSTRUCT, HeapTupleIsValid, logicalrep_write_namespace(), NameStr, ObjectIdGetDatum, pq_sendbyte(), pq_sendint32(), pq_sendstring(), ReleaseSysCache(), SearchSysCache1(), and TYPEOID.

Referenced by maybe_send_schema().

401 {
402  Oid basetypoid = getBaseType(typoid);
403  HeapTuple tup;
404  Form_pg_type typtup;
405 
406  pq_sendbyte(out, 'Y'); /* sending TYPE */
407 
408  tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(basetypoid));
409  if (!HeapTupleIsValid(tup))
410  elog(ERROR, "cache lookup failed for type %u", basetypoid);
411  typtup = (Form_pg_type) GETSTRUCT(tup);
412 
413  /* use Oid as relation identifier */
414  pq_sendint32(out, typoid);
415 
416  /* send qualified type name */
417  logicalrep_write_namespace(out, typtup->typnamespace);
418  pq_sendstring(out, NameStr(typtup->typname));
419 
420  ReleaseSysCache(tup);
421 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
static void logicalrep_write_namespace(StringInfo out, Oid nspid)
Definition: proto.c:659
void pq_sendstring(StringInfo buf, const char *str)
Definition: pqformat.c:197
unsigned int Oid
Definition: postgres_ext.h:31
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
static void pq_sendint32(StringInfo buf, uint32 i)
Definition: pqformat.h:145
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1116
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1164
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
FormData_pg_type * Form_pg_type
Definition: pg_type.h:250
#define elog(elevel,...)
Definition: elog.h:228
#define NameStr(name)
Definition: c.h:615
Oid getBaseType(Oid typid)
Definition: lsyscache.c:2299

◆ logicalrep_write_update()

void logicalrep_write_update ( StringInfo  out,
Relation  rel,
HeapTuple  oldtuple,
HeapTuple  newtuple 
)

Definition at line 181 of file proto.c.

References Assert, logicalrep_write_tuple(), pq_sendbyte(), pq_sendint32(), RelationData::rd_rel, and RelationGetRelid.

Referenced by pgoutput_change().

183 {
184  pq_sendbyte(out, 'U'); /* action UPDATE */
185 
186  Assert(rel->rd_rel->relreplident == REPLICA_IDENTITY_DEFAULT ||
187  rel->rd_rel->relreplident == REPLICA_IDENTITY_FULL ||
188  rel->rd_rel->relreplident == REPLICA_IDENTITY_INDEX);
189 
190  /* use Oid as relation identifier */
191  pq_sendint32(out, RelationGetRelid(rel));
192 
193  if (oldtuple != NULL)
194  {
195  if (rel->rd_rel->relreplident == REPLICA_IDENTITY_FULL)
196  pq_sendbyte(out, 'O'); /* old tuple follows */
197  else
198  pq_sendbyte(out, 'K'); /* old key follows */
199  logicalrep_write_tuple(out, rel, oldtuple);
200  }
201 
202  pq_sendbyte(out, 'N'); /* new tuple follows */
203  logicalrep_write_tuple(out, rel, newtuple);
204 }
Form_pg_class rd_rel
Definition: rel.h:84
static void pq_sendbyte(StringInfo buf, uint8 byt)
Definition: pqformat.h:161
static void pq_sendint32(StringInfo buf, uint32 i)
Definition: pqformat.h:145
#define Assert(condition)
Definition: c.h:738
#define RelationGetRelid(relation)
Definition: rel.h:428
static void logicalrep_write_tuple(StringInfo out, Relation rel, HeapTuple tuple)
Definition: proto.c:440