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Commit08691ea

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Rework some code handling pg_subscription data in psql and pg_dump
This commit fixes some inconsistencies found in the frontend code whendealing with subscription catalog data.The following changes are done:- pg_subscription.h gains a EXPOSE_TO_CLIENT_CODE, so as more contentdefined in pg_subscription.h becomes available in pg_subscription_d.hfor the frontend.- In psql's describe.c, substream can be switched to use CppAsString2()with its three LOGICALREP_STREAM_* values, with pg_subscription_d.hincluded.- pg_dump.c included pg_subscription.h, which is a header that shouldonly be used in the backend code. The code is updated to usepg_subscription_d.h instead.- pg_dump stored all the data from pg_subscription in SubscriptionInfowith only strings, and a good chunk of them are boolean and char values.Using strings is not necessary, complicates the code (see for exampletwo_phase_disabled[] removed here), and is inconsistent with the wayother catalogs' data is handled. The fields of SubscriptionInfo arereordered to match with the order in its catalog, while on it.Reviewed-by: Hayato KurodaDiscussion:https://postgr.es/m/Z0lB2kp0ksHgmVuk@paquier.xyz
1 parent75818b3 commit08691ea

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4 files changed

+58
-56
lines changed

4 files changed

+58
-56
lines changed

‎src/bin/pg_dump/pg_dump.c‎

Lines changed: 22 additions & 25 deletions
Original file line numberDiff line numberDiff line change
@@ -50,7 +50,7 @@
5050
#include "catalog/pg_default_acl_d.h"
5151
#include "catalog/pg_largeobject_d.h"
5252
#include "catalog/pg_proc_d.h"
53-
#include "catalog/pg_subscription.h"
53+
#include "catalog/pg_subscription_d.h"
5454
#include "catalog/pg_type_d.h"
5555
#include "common/connect.h"
5656
#include "common/int.h"
@@ -4968,20 +4968,20 @@ getSubscriptions(Archive *fout)
49684968
i_oid = PQfnumber(res, "oid");
49694969
i_subname = PQfnumber(res, "subname");
49704970
i_subowner = PQfnumber(res, "subowner");
4971+
i_subenabled = PQfnumber(res, "subenabled");
49714972
i_subbinary = PQfnumber(res, "subbinary");
49724973
i_substream = PQfnumber(res, "substream");
49734974
i_subtwophasestate = PQfnumber(res, "subtwophasestate");
49744975
i_subdisableonerr = PQfnumber(res, "subdisableonerr");
49754976
i_subpasswordrequired = PQfnumber(res, "subpasswordrequired");
49764977
i_subrunasowner = PQfnumber(res, "subrunasowner");
4978+
i_subfailover = PQfnumber(res, "subfailover");
49774979
i_subconninfo = PQfnumber(res, "subconninfo");
49784980
i_subslotname = PQfnumber(res, "subslotname");
49794981
i_subsynccommit = PQfnumber(res, "subsynccommit");
49804982
i_subpublications = PQfnumber(res, "subpublications");
49814983
i_suborigin = PQfnumber(res, "suborigin");
49824984
i_suboriginremotelsn = PQfnumber(res, "suboriginremotelsn");
4983-
i_subenabled = PQfnumber(res, "subenabled");
4984-
i_subfailover = PQfnumber(res, "subfailover");
49854985

49864986
subinfo = pg_malloc(ntups * sizeof(SubscriptionInfo));
49874987

@@ -4995,18 +4995,20 @@ getSubscriptions(Archive *fout)
49954995
subinfo[i].dobj.name = pg_strdup(PQgetvalue(res, i, i_subname));
49964996
subinfo[i].rolname = getRoleName(PQgetvalue(res, i, i_subowner));
49974997

4998+
subinfo[i].subenabled =
4999+
(strcmp(PQgetvalue(res, i, i_subenabled), "t") == 0);
49985000
subinfo[i].subbinary =
4999-
pg_strdup(PQgetvalue(res, i, i_subbinary));
5000-
subinfo[i].substream =
5001-
pg_strdup(PQgetvalue(res, i, i_substream));
5002-
subinfo[i].subtwophasestate =
5003-
pg_strdup(PQgetvalue(res, i, i_subtwophasestate));
5001+
(strcmp(PQgetvalue(res, i, i_subbinary), "t") == 0);
5002+
subinfo[i].substream = *(PQgetvalue(res, i, i_substream));
5003+
subinfo[i].subtwophasestate = *(PQgetvalue(res, i, i_subtwophasestate));
50045004
subinfo[i].subdisableonerr =
5005-
pg_strdup(PQgetvalue(res, i, i_subdisableonerr));
5005+
(strcmp(PQgetvalue(res, i, i_subdisableonerr), "t") == 0);
50065006
subinfo[i].subpasswordrequired =
5007-
pg_strdup(PQgetvalue(res, i, i_subpasswordrequired));
5007+
(strcmp(PQgetvalue(res, i, i_subpasswordrequired), "t") == 0);
50085008
subinfo[i].subrunasowner =
5009-
pg_strdup(PQgetvalue(res, i, i_subrunasowner));
5009+
(strcmp(PQgetvalue(res, i, i_subrunasowner), "t") == 0);
5010+
subinfo[i].subfailover =
5011+
(strcmp(PQgetvalue(res, i, i_subfailover), "t") == 0);
50105012
subinfo[i].subconninfo =
50115013
pg_strdup(PQgetvalue(res, i, i_subconninfo));
50125014
if (PQgetisnull(res, i, i_subslotname))
@@ -5024,10 +5026,6 @@ getSubscriptions(Archive *fout)
50245026
else
50255027
subinfo[i].suboriginremotelsn =
50265028
pg_strdup(PQgetvalue(res, i, i_suboriginremotelsn));
5027-
subinfo[i].subenabled =
5028-
pg_strdup(PQgetvalue(res, i, i_subenabled));
5029-
subinfo[i].subfailover =
5030-
pg_strdup(PQgetvalue(res, i, i_subfailover));
50315029

50325030
/* Decide whether we want to dump it */
50335031
selectDumpableObject(&(subinfo[i].dobj), fout);
@@ -5208,7 +5206,6 @@ dumpSubscription(Archive *fout, const SubscriptionInfo *subinfo)
52085206
char **pubnames = NULL;
52095207
intnpubnames = 0;
52105208
inti;
5211-
chartwo_phase_disabled[] = {LOGICALREP_TWOPHASE_STATE_DISABLED, '\0'};
52125209

52135210
/* Do nothing if not dumping schema */
52145211
if (!dopt->dumpSchema)
@@ -5245,29 +5242,29 @@ dumpSubscription(Archive *fout, const SubscriptionInfo *subinfo)
52455242
else
52465243
appendPQExpBufferStr(query, "NONE");
52475244

5248-
if (strcmp(subinfo->subbinary, "t") == 0)
5245+
if (subinfo->subbinary)
52495246
appendPQExpBufferStr(query, ", binary = true");
52505247

5251-
if (strcmp(subinfo->substream, "t")==0)
5248+
if (subinfo->substream==LOGICALREP_STREAM_ON)
52525249
appendPQExpBufferStr(query, ", streaming = on");
5253-
else if (strcmp(subinfo->substream, "p")==0)
5250+
else if (subinfo->substream==LOGICALREP_STREAM_PARALLEL)
52545251
appendPQExpBufferStr(query, ", streaming = parallel");
52555252
else
52565253
appendPQExpBufferStr(query, ", streaming = off");
52575254

5258-
if (strcmp(subinfo->subtwophasestate, two_phase_disabled)!=0)
5255+
if (subinfo->subtwophasestate!=LOGICALREP_TWOPHASE_STATE_DISABLED)
52595256
appendPQExpBufferStr(query, ", two_phase = on");
52605257

5261-
if (strcmp(subinfo->subdisableonerr, "t") == 0)
5258+
if (subinfo->subdisableonerr)
52625259
appendPQExpBufferStr(query, ", disable_on_error = true");
52635260

5264-
if (strcmp(subinfo->subpasswordrequired, "t") != 0)
5261+
if (!subinfo->subpasswordrequired)
52655262
appendPQExpBuffer(query, ", password_required = false");
52665263

5267-
if (strcmp(subinfo->subrunasowner, "t") == 0)
5264+
if (subinfo->subrunasowner)
52685265
appendPQExpBufferStr(query, ", run_as_owner = true");
52695266

5270-
if (strcmp(subinfo->subfailover, "t") == 0)
5267+
if (subinfo->subfailover)
52715268
appendPQExpBufferStr(query, ", failover = true");
52725269

52735270
if (strcmp(subinfo->subsynccommit, "off") != 0)
@@ -5303,7 +5300,7 @@ dumpSubscription(Archive *fout, const SubscriptionInfo *subinfo)
53035300
appendPQExpBuffer(query, ", '%s');\n", subinfo->suboriginremotelsn);
53045301
}
53055302

5306-
if (strcmp(subinfo->subenabled, "t") == 0)
5303+
if (subinfo->subenabled)
53075304
{
53085305
/*
53095306
* Enable the subscription to allow the replication to continue

‎src/bin/pg_dump/pg_dump.h‎

Lines changed: 8 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -664,20 +664,20 @@ typedef struct _SubscriptionInfo
664664
{
665665
DumpableObjectdobj;
666666
constchar*rolname;
667-
char*subenabled;
668-
char*subbinary;
669-
char*substream;
670-
char*subtwophasestate;
671-
char*subdisableonerr;
672-
char*subpasswordrequired;
673-
char*subrunasowner;
667+
boolsubenabled;
668+
boolsubbinary;
669+
charsubstream;
670+
charsubtwophasestate;
671+
boolsubdisableonerr;
672+
boolsubpasswordrequired;
673+
boolsubrunasowner;
674+
boolsubfailover;
674675
char*subconninfo;
675676
char*subslotname;
676677
char*subsynccommit;
677678
char*subpublications;
678679
char*suborigin;
679680
char*suboriginremotelsn;
680-
char*subfailover;
681681
}SubscriptionInfo;
682682

683683
/*

‎src/bin/psql/describe.c‎

Lines changed: 4 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -25,6 +25,7 @@
2525
#include"catalog/pg_default_acl_d.h"
2626
#include"catalog/pg_proc_d.h"
2727
#include"catalog/pg_statistic_ext_d.h"
28+
#include"catalog/pg_subscription_d.h"
2829
#include"catalog/pg_type_d.h"
2930
#include"common.h"
3031
#include"common/logging.h"
@@ -6679,9 +6680,9 @@ describeSubscriptions(const char *pattern, bool verbose)
66796680
if (pset.sversion >=160000)
66806681
appendPQExpBuffer(&buf,
66816682
", (CASE substream\n"
6682-
" WHEN'f' THEN 'off'\n"
6683-
" WHEN't' THEN 'on'\n"
6684-
" WHEN'p' THEN 'parallel'\n"
6683+
" WHEN"CppAsString2(LOGICALREP_STREAM_OFF)" THEN 'off'\n"
6684+
" WHEN"CppAsString2(LOGICALREP_STREAM_ON)" THEN 'on'\n"
6685+
" WHEN"CppAsString2(LOGICALREP_STREAM_PARALLEL)" THEN 'parallel'\n"
66856686
" END) AS \"%s\"\n",
66866687
gettext_noop("Streaming"));
66876688
else

‎src/include/catalog/pg_subscription.h‎

Lines changed: 24 additions & 20 deletions
Original file line numberDiff line numberDiff line change
@@ -23,26 +23,6 @@
2323
#include"lib/stringinfo.h"
2424
#include"nodes/pg_list.h"
2525

26-
/*
27-
* two_phase tri-state values. See comments atop worker.c to know more about
28-
* these states.
29-
*/
30-
#defineLOGICALREP_TWOPHASE_STATE_DISABLED 'd'
31-
#defineLOGICALREP_TWOPHASE_STATE_PENDING 'p'
32-
#defineLOGICALREP_TWOPHASE_STATE_ENABLED 'e'
33-
34-
/*
35-
* The subscription will request the publisher to only send changes that do not
36-
* have any origin.
37-
*/
38-
#defineLOGICALREP_ORIGIN_NONE "none"
39-
40-
/*
41-
* The subscription will request the publisher to send changes regardless
42-
* of their origin.
43-
*/
44-
#defineLOGICALREP_ORIGIN_ANY "any"
45-
4626
/* ----------------
4727
*pg_subscription definition. cpp turns this into
4828
*typedef struct FormData_pg_subscription
@@ -159,6 +139,28 @@ typedef struct Subscription
159139
* specified origin */
160140
}Subscription;
161141

142+
#ifdefEXPOSE_TO_CLIENT_CODE
143+
144+
/*
145+
* two_phase tri-state values. See comments atop worker.c to know more about
146+
* these states.
147+
*/
148+
#defineLOGICALREP_TWOPHASE_STATE_DISABLED 'd'
149+
#defineLOGICALREP_TWOPHASE_STATE_PENDING 'p'
150+
#defineLOGICALREP_TWOPHASE_STATE_ENABLED 'e'
151+
152+
/*
153+
* The subscription will request the publisher to only send changes that do not
154+
* have any origin.
155+
*/
156+
#defineLOGICALREP_ORIGIN_NONE "none"
157+
158+
/*
159+
* The subscription will request the publisher to send changes regardless
160+
* of their origin.
161+
*/
162+
#defineLOGICALREP_ORIGIN_ANY "any"
163+
162164
/* Disallow streaming in-progress transactions. */
163165
#defineLOGICALREP_STREAM_OFF 'f'
164166

@@ -174,6 +176,8 @@ typedef struct Subscription
174176
*/
175177
#defineLOGICALREP_STREAM_PARALLEL 'p'
176178

179+
#endif/* EXPOSE_TO_CLIENT_CODE */
180+
177181
externSubscription*GetSubscription(Oidsubid,boolmissing_ok);
178182
externvoidFreeSubscription(Subscription*sub);
179183
externvoidDisableSubscription(Oidsubid);

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