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Commit50533a6

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Support comments on FOREIGN DATA WRAPPER and SERVER objects.
This mostly involves making it work with the objectaddress.c framework,which does most of the heavy lifting. In that vein, changeGetForeignDataWrapperOidByName to get_foreign_data_wrapper_oid andGetForeignServerOidByName to get_foreign_server_oid, to match thepattern we use for other object types.Robert Haas and Shigeru Hanada
1 parent7fcc75d commit50533a6

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11 files changed

+124
-55
lines changed

11 files changed

+124
-55
lines changed

‎doc/src/sgml/ref/comment.sgml‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -33,6 +33,7 @@ COMMENT ON
3333
DATABASE <replaceable class="PARAMETER">object_name</replaceable> |
3434
DOMAIN <replaceable class="PARAMETER">object_name</replaceable> |
3535
EXTENSION <replaceable class="PARAMETER">object_name</replaceable> |
36+
FOREIGN DATA WRAPPER <replaceable class="PARAMETER">object_name</replaceable> |
3637
FOREIGN TABLE <replaceable class="PARAMETER">object_name</replaceable> |
3738
FUNCTION <replaceable class="PARAMETER">function_name</replaceable> ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) |
3839
INDEX <replaceable class="PARAMETER">object_name</replaceable> |
@@ -45,6 +46,7 @@ COMMENT ON
4546
RULE <replaceable class="PARAMETER">rule_name</replaceable> ON <replaceable class="PARAMETER">table_name</replaceable> |
4647
SCHEMA <replaceable class="PARAMETER">object_name</replaceable> |
4748
SEQUENCE <replaceable class="PARAMETER">object_name</replaceable> |
49+
SERVER <replaceable class="PARAMETER">object_name</replaceable> |
4850
TABLESPACE <replaceable class="PARAMETER">object_name</replaceable> |
4951
TEXT SEARCH CONFIGURATION <replaceable class="PARAMETER">object_name</replaceable> |
5052
TEXT SEARCH DICTIONARY <replaceable class="PARAMETER">object_name</replaceable> |

‎src/backend/catalog/aclchk.c‎

Lines changed: 29 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -683,7 +683,7 @@ objectNamesToOids(GrantObjectType objtype, List *objnames)
683683
foreach(cell,objnames)
684684
{
685685
char*fdwname=strVal(lfirst(cell));
686-
Oidfdwid=GetForeignDataWrapperOidByName(fdwname, false);
686+
Oidfdwid=get_foreign_data_wrapper_oid(fdwname, false);
687687

688688
objects=lappend_oid(objects,fdwid);
689689
}
@@ -692,7 +692,7 @@ objectNamesToOids(GrantObjectType objtype, List *objnames)
692692
foreach(cell,objnames)
693693
{
694694
char*srvname=strVal(lfirst(cell));
695-
Oidsrvid=GetForeignServerOidByName(srvname, false);
695+
Oidsrvid=get_foreign_server_oid(srvname, false);
696696

697697
objects=lappend_oid(objects,srvid);
698698
}
@@ -4588,6 +4588,33 @@ pg_ts_config_ownercheck(Oid cfg_oid, Oid roleid)
45884588
returnhas_privs_of_role(roleid,ownerId);
45894589
}
45904590

4591+
/*
4592+
* Ownership check for a foreign-data wrapper (specified by OID).
4593+
*/
4594+
bool
4595+
pg_foreign_data_wrapper_ownercheck(Oidsrv_oid,Oidroleid)
4596+
{
4597+
HeapTupletuple;
4598+
OidownerId;
4599+
4600+
/* Superusers bypass all permission checking. */
4601+
if (superuser_arg(roleid))
4602+
return true;
4603+
4604+
tuple=SearchSysCache1(FOREIGNDATAWRAPPEROID,ObjectIdGetDatum(srv_oid));
4605+
if (!HeapTupleIsValid(tuple))
4606+
ereport(ERROR,
4607+
(errcode(ERRCODE_UNDEFINED_OBJECT),
4608+
errmsg("foreign-data wrapper with OID %u does not exist",
4609+
srv_oid)));
4610+
4611+
ownerId= ((Form_pg_foreign_data_wrapper)GETSTRUCT(tuple))->fdwowner;
4612+
4613+
ReleaseSysCache(tuple);
4614+
4615+
returnhas_privs_of_role(roleid,ownerId);
4616+
}
4617+
45914618
/*
45924619
* Ownership check for a foreign server (specified by OID).
45934620
*/

‎src/backend/catalog/objectaddress.c‎

Lines changed: 32 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -30,6 +30,8 @@
3030
#include"catalog/pg_conversion.h"
3131
#include"catalog/pg_database.h"
3232
#include"catalog/pg_extension.h"
33+
#include"catalog/pg_foreign_data_wrapper.h"
34+
#include"catalog/pg_foreign_server.h"
3335
#include"catalog/pg_language.h"
3436
#include"catalog/pg_largeobject.h"
3537
#include"catalog/pg_largeobject_metadata.h"
@@ -52,6 +54,7 @@
5254
#include"commands/proclang.h"
5355
#include"commands/tablespace.h"
5456
#include"commands/trigger.h"
57+
#include"foreign/foreign.h"
5558
#include"libpq/be-fsstubs.h"
5659
#include"miscadmin.h"
5760
#include"nodes/makefuncs.h"
@@ -140,6 +143,8 @@ get_object_address(ObjectType objtype, List *objname, List *objargs,
140143
caseOBJECT_ROLE:
141144
caseOBJECT_SCHEMA:
142145
caseOBJECT_LANGUAGE:
146+
caseOBJECT_FDW:
147+
caseOBJECT_FOREIGN_SERVER:
143148
address=get_object_address_unqualified(objtype,objname);
144149
break;
145150
caseOBJECT_TYPE:
@@ -295,6 +300,12 @@ get_object_address_unqualified(ObjectType objtype, List *qualname)
295300
caseOBJECT_LANGUAGE:
296301
msg=gettext_noop("language name cannot be qualified");
297302
break;
303+
caseOBJECT_FDW:
304+
msg=gettext_noop("foreign-data wrapper name cannot be qualified");
305+
break;
306+
caseOBJECT_FOREIGN_SERVER:
307+
msg=gettext_noop("server name cannot be qualified");
308+
break;
298309
default:
299310
elog(ERROR,"unrecognized objtype: %d", (int)objtype);
300311
msg=NULL;/* placate compiler */
@@ -340,6 +351,16 @@ get_object_address_unqualified(ObjectType objtype, List *qualname)
340351
address.objectId=get_language_oid(name, false);
341352
address.objectSubId=0;
342353
break;
354+
caseOBJECT_FDW:
355+
address.classId=ForeignDataWrapperRelationId;
356+
address.objectId=get_foreign_data_wrapper_oid(name, false);
357+
address.objectSubId=0;
358+
break;
359+
caseOBJECT_FOREIGN_SERVER:
360+
address.classId=ForeignServerRelationId;
361+
address.objectId=get_foreign_server_oid(name, false);
362+
address.objectSubId=0;
363+
break;
343364
default:
344365
elog(ERROR,"unrecognized objtype: %d", (int)objtype);
345366
/* placate compiler, which doesn't know elog won't return */
@@ -655,6 +676,12 @@ object_exists(ObjectAddress address)
655676
caseCastRelationId:
656677
indexoid=CastOidIndexId;
657678
break;
679+
caseForeignDataWrapperRelationId:
680+
cache=FOREIGNDATAWRAPPEROID;
681+
break;
682+
caseForeignServerRelationId:
683+
cache=FOREIGNSERVEROID;
684+
break;
658685
caseTSParserRelationId:
659686
cache=TSPARSEROID;
660687
break;
@@ -758,6 +785,11 @@ check_object_ownership(Oid roleid, ObjectType objtype, ObjectAddress address,
758785
aclcheck_error(ACLCHECK_NOT_OWNER,ACL_KIND_EXTENSION,
759786
NameListToString(objname));
760787
break;
788+
caseOBJECT_FDW:
789+
if (!pg_foreign_data_wrapper_ownercheck(address.objectId,roleid))
790+
aclcheck_error(ACLCHECK_NOT_OWNER,ACL_KIND_FDW,
791+
NameListToString(objname));
792+
break;
761793
caseOBJECT_FOREIGN_SERVER:
762794
if (!pg_foreign_server_ownercheck(address.objectId,roleid))
763795
aclcheck_error(ACLCHECK_NOT_OWNER,ACL_KIND_FOREIGN_SERVER,
@@ -838,7 +870,6 @@ check_object_ownership(Oid roleid, ObjectType objtype, ObjectAddress address,
838870
errmsg("must have CREATEROLE privilege")));
839871
}
840872
break;
841-
caseOBJECT_FDW:
842873
caseOBJECT_TSPARSER:
843874
caseOBJECT_TSTEMPLATE:
844875
/* We treat these object types as being owned by superusers */

‎src/backend/commands/foreigncmds.c‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -686,7 +686,7 @@ RemoveForeignDataWrapper(DropFdwStmt *stmt)
686686
OidfdwId;
687687
ObjectAddressobject;
688688

689-
fdwId=GetForeignDataWrapperOidByName(stmt->fdwname, true);
689+
fdwId=get_foreign_data_wrapper_oid(stmt->fdwname, true);
690690

691691
if (!superuser())
692692
ereport(ERROR,
@@ -959,7 +959,7 @@ RemoveForeignServer(DropForeignServerStmt *stmt)
959959
OidsrvId;
960960
ObjectAddressobject;
961961

962-
srvId=GetForeignServerOidByName(stmt->servername, true);
962+
srvId=get_foreign_server_oid(stmt->servername, true);
963963

964964
if (!OidIsValid(srvId))
965965
{

‎src/backend/foreign/foreign.c‎

Lines changed: 41 additions & 41 deletions
Original file line numberDiff line numberDiff line change
@@ -79,26 +79,6 @@ GetForeignDataWrapper(Oid fdwid)
7979
}
8080

8181

82-
/*
83-
* GetForeignDataWrapperOidByName - look up the foreign-data wrapper
84-
* OID by name.
85-
*/
86-
Oid
87-
GetForeignDataWrapperOidByName(constchar*fdwname,boolmissing_ok)
88-
{
89-
OidfdwId;
90-
91-
fdwId=GetSysCacheOid1(FOREIGNDATAWRAPPERNAME,CStringGetDatum(fdwname));
92-
93-
if (!OidIsValid(fdwId)&& !missing_ok)
94-
ereport(ERROR,
95-
(errcode(ERRCODE_UNDEFINED_OBJECT),
96-
errmsg("foreign-data wrapper \"%s\" does not exist",
97-
fdwname)));
98-
99-
returnfdwId;
100-
}
101-
10282

10383
/*
10484
* GetForeignDataWrapperByName - look up the foreign-data wrapper
@@ -107,7 +87,7 @@ GetForeignDataWrapperOidByName(const char *fdwname, bool missing_ok)
10787
ForeignDataWrapper*
10888
GetForeignDataWrapperByName(constchar*fdwname,boolmissing_ok)
10989
{
110-
OidfdwId=GetForeignDataWrapperOidByName(fdwname,missing_ok);
90+
OidfdwId=get_foreign_data_wrapper_oid(fdwname,missing_ok);
11191

11292
if (!OidIsValid(fdwId))
11393
returnNULL;
@@ -171,32 +151,13 @@ GetForeignServer(Oid serverid)
171151
}
172152

173153

174-
/*
175-
* GetForeignServerByName - look up the foreign server oid by name.
176-
*/
177-
Oid
178-
GetForeignServerOidByName(constchar*srvname,boolmissing_ok)
179-
{
180-
Oidserverid;
181-
182-
serverid=GetSysCacheOid1(FOREIGNSERVERNAME,CStringGetDatum(srvname));
183-
184-
if (!OidIsValid(serverid)&& !missing_ok)
185-
ereport(ERROR,
186-
(errcode(ERRCODE_UNDEFINED_OBJECT),
187-
errmsg("server \"%s\" does not exist",srvname)));
188-
189-
returnserverid;
190-
}
191-
192-
193154
/*
194155
* GetForeignServerByName - look up the foreign server definition by name.
195156
*/
196157
ForeignServer*
197158
GetForeignServerByName(constchar*srvname,boolmissing_ok)
198159
{
199-
Oidserverid=GetForeignServerOidByName(srvname,missing_ok);
160+
Oidserverid=get_foreign_server_oid(srvname,missing_ok);
200161

201162
if (!OidIsValid(serverid))
202163
returnNULL;
@@ -538,3 +499,42 @@ postgresql_fdw_validator(PG_FUNCTION_ARGS)
538499

539500
PG_RETURN_BOOL(true);
540501
}
502+
503+
/*
504+
* get_foreign_data_wrapper_oid - given a FDW name, look up the OID
505+
*
506+
* If missing_ok is false, throw an error if name not found. If true, just
507+
* return InvalidOid.
508+
*/
509+
Oid
510+
get_foreign_data_wrapper_oid(constchar*fdwname,boolmissing_ok)
511+
{
512+
Oidoid;
513+
514+
oid=GetSysCacheOid1(FOREIGNDATAWRAPPERNAME,CStringGetDatum(fdwname));
515+
if (!OidIsValid(oid)&& !missing_ok)
516+
ereport(ERROR,
517+
(errcode(ERRCODE_UNDEFINED_OBJECT),
518+
errmsg("foreign-data wrapper \"%s\" does not exist",
519+
fdwname)));
520+
returnoid;
521+
}
522+
523+
/*
524+
* get_foreign_server_oid - given a FDW name, look up the OID
525+
*
526+
* If missing_ok is false, throw an error if name not found. If true, just
527+
* return InvalidOid.
528+
*/
529+
Oid
530+
get_foreign_server_oid(constchar*servername,boolmissing_ok)
531+
{
532+
Oidoid;
533+
534+
oid=GetSysCacheOid1(FOREIGNSERVERNAME,CStringGetDatum(servername));
535+
if (!OidIsValid(oid)&& !missing_ok)
536+
ereport(ERROR,
537+
(errcode(ERRCODE_UNDEFINED_OBJECT),
538+
errmsg("server \"%s\" does not exist",servername)));
539+
returnoid;
540+
}

‎src/backend/parser/gram.y‎

Lines changed: 8 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -4787,11 +4787,12 @@ opt_restart_seqs:
47874787
*the object associated with the comment. The form of the statement is:
47884788
*
47894789
*COMMENT ON [ [ DATABASE | DOMAIN | INDEX | SEQUENCE | TABLE | TYPE | VIEW |
4790-
* COLLATION | CONVERSION | LANGUAGE | OPERATOR CLASS | LARGE OBJECT |
4791-
* CAST | COLUMN | SCHEMA | TABLESPACE | EXTENSION | ROLE |
4792-
* TEXT SEARCH PARSER | TEXT SEARCH DICTIONARY |
4793-
* TEXT SEARCH TEMPLATE | TEXT SEARCH CONFIGURATION |
4794-
* FOREIGN TABLE ] <objname> |
4790+
* COLLATION | CONVERSION | LANGUAGE | OPERATOR CLASS |
4791+
* LARGE OBJECT | CAST | COLUMN | SCHEMA | TABLESPACE |
4792+
* EXTENSION | ROLE | TEXT SEARCH PARSER |
4793+
* TEXT SEARCH DICTIONARY | TEXT SEARCH TEMPLATE |
4794+
* TEXT SEARCH CONFIGURATION | FOREIGN TABLE |
4795+
* FOREIGN DATA WRAPPER | SERVER ] <objname> |
47954796
* AGGREGATE <aggname> (arg1, ...) |
47964797
* FUNCTION <funcname> (arg1, arg2, ...) |
47974798
* OPERATOR <op> (leftoperand_typ, rightoperand_typ) |
@@ -4971,6 +4972,8 @@ comment_type:
49714972
|EXTENSION {$$ = OBJECT_EXTENSION; }
49724973
|ROLE{$$ = OBJECT_ROLE; }
49734974
|FOREIGNTABLE{$$ = OBJECT_FOREIGN_TABLE; }
4975+
|SERVER{$$ = OBJECT_FOREIGN_SERVER; }
4976+
|FOREIGNDATA_PWRAPPER{$$ = OBJECT_FDW; }
49744977
;
49754978

49764979
comment_text:

‎src/backend/utils/adt/acl.c‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -3162,7 +3162,7 @@ convert_foreign_data_wrapper_name(text *fdwname)
31623162
{
31633163
char*fdwstr=text_to_cstring(fdwname);
31643164

3165-
returnGetForeignDataWrapperOidByName(fdwstr, false);
3165+
returnget_foreign_data_wrapper_oid(fdwstr, false);
31663166
}
31673167

31683168
/*
@@ -3928,7 +3928,7 @@ convert_server_name(text *servername)
39283928
{
39293929
char*serverstr=text_to_cstring(servername);
39303930

3931-
returnGetForeignServerOidByName(serverstr, false);
3931+
returnget_foreign_server_oid(serverstr, false);
39323932
}
39333933

39343934
/*

‎src/include/foreign/foreign.h‎

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -70,12 +70,13 @@ typedef struct ForeignTable
7070

7171
externForeignServer*GetForeignServer(Oidserverid);
7272
externForeignServer*GetForeignServerByName(constchar*name,boolmissing_ok);
73-
externOidGetForeignServerOidByName(constchar*name,boolmissing_ok);
7473
externUserMapping*GetUserMapping(Oiduserid,Oidserverid);
7574
externForeignDataWrapper*GetForeignDataWrapper(Oidfdwid);
7675
externForeignDataWrapper*GetForeignDataWrapperByName(constchar*name,
7776
boolmissing_ok);
78-
externOidGetForeignDataWrapperOidByName(constchar*name,boolmissing_ok);
7977
externForeignTable*GetForeignTable(Oidrelid);
8078

79+
externOidget_foreign_data_wrapper_oid(constchar*fdwname,boolmissing_ok);
80+
externOidget_foreign_server_oid(constchar*servername,boolmissing_ok);
81+
8182
#endif/* FOREIGN_H */

‎src/include/utils/acl.h‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -315,6 +315,7 @@ extern bool pg_collation_ownercheck(Oid coll_oid, Oid roleid);
315315
externboolpg_conversion_ownercheck(Oidconv_oid,Oidroleid);
316316
externboolpg_ts_dict_ownercheck(Oiddict_oid,Oidroleid);
317317
externboolpg_ts_config_ownercheck(Oidcfg_oid,Oidroleid);
318+
externboolpg_foreign_data_wrapper_ownercheck(Oidsrv_oid,Oidroleid);
318319
externboolpg_foreign_server_ownercheck(Oidsrv_oid,Oidroleid);
319320
externboolpg_extension_ownercheck(Oidext_oid,Oidroleid);
320321
externboolhas_createrole_privilege(Oidroleid);

‎src/test/regress/expected/foreign_data.out‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -14,6 +14,7 @@ CREATE ROLE regress_test_role_super SUPERUSER;
1414
CREATE ROLE regress_test_indirect;
1515
CREATE ROLE unprivileged_role;
1616
CREATE FOREIGN DATA WRAPPER dummy;
17+
COMMENT ON FOREIGN DATA WRAPPER dummy IS 'useless';
1718
CREATE FOREIGN DATA WRAPPER postgresql VALIDATOR postgresql_fdw_validator;
1819
-- At this point we should have 2 built-in wrappers and no servers.
1920
SELECT fdwname, fdwhandler::regproc, fdwvalidator::regproc, fdwoptions FROM pg_foreign_data_wrapper ORDER BY 1, 2, 3;
@@ -211,6 +212,7 @@ DROP ROLE regress_test_role_super;
211212

212213
CREATE FOREIGN DATA WRAPPER foo;
213214
CREATE SERVER s1 FOREIGN DATA WRAPPER foo;
215+
COMMENT ON SERVER s1 IS 'foreign server';
214216
CREATE USER MAPPING FOR current_user SERVER s1;
215217
\dew+
216218
List of foreign-data wrappers

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