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The TAP tests whose ok() calls are changed in this commit were relying
on perl operators, rather than equivalents available in Test::More. For
example, rather than the following:
ok($data =~ qr/expr/m, "expr matching");
ok($data !~ qr/expr/m, "expr not matching");
The new test code uses this equivalent:
like($data, qr/expr/m, "expr matching");
unlike($data, qr/expr/m, "expr not matching");
A huge benefit of the new formulation is that it is possible to know
about the values we are checking if a failure happens, making debugging
easier, should the test runs happen in the buildfarm, in the CI or
locally.
This change leads to more test code overall as perltidy likes to make
the code pretty the way it is in this commit.
Author: Sadhuprasad Patro <b.sadhu@gmail.com>
Discussion: https://postgr.es/m/CAFF0-CHhwNx_Cv2uy7tKjODUbeOgPrJpW4Rpf1jqB16_1bU2sg@mail.gmail.com
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This new option instructs pg_dump to dump sequence data when the
--no-data, --schema-only, or --statistics-only option is specified.
This was originally considered for commit a7e5457db8, but it was
left out at that time because there was no known use-case. A
follow-up commit will use this to optimize pg_upgrade's file
transfer step.
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Discussion: https://postgr.es/m/Zyvop-LxLXBLrZil%40nathan
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This commit addresses some inconsistencies with how the options of some
routines from PostgreSQL/Test/ are written, mainly for init() and
init_from_backup() in Cluster.pm. These are written as unquoted, except
in the locations updated here.
Changes extracted from a larger patch by the same author.
Author: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Discussion: https://postgr.es/m/87jz8rzf3h.fsf@wibble.ilmari.org
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This commit reshapes the grammar of some commands to apply a more
consistent style across the board, following rules similar to
ce1b0f9da03e:
- Elimination of some pointless used-once variables.
- Use of long options, to self-document better the options used.
- Use of fat commas to link option names and their assigned values,
including redirections, so as perltidy can be tricked to put them
together.
Author: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Discussion: https://postgr.es/m/87jz8rzf3h.fsf@wibble.ilmari.org
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Backpatch-through: 13
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This allows an error cursor to be supplied for a bunch of
bad-function-definition errors that previously lacked one,
or that cheated a bit by pointing at the contained type name
when the error isn't really about that.
Bump catversion from an abundance of caution --- I don't think
this node type can actually appear in stored views/rules, but
better safe than sorry.
Jian He and Tom Lane (extracted from a larger patch by Jian,
with some additional work by me)
Discussion: https://postgr.es/m/CACJufxEmONE3P2En=jopZy1m=cCCUs65M4+1o52MW5og9oaUPA@mail.gmail.com
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Commit 534287403 invented SHARED_DEPENDENCY_INITACL entries in
pg_shdepend, but installed them only for non-owner roles mentioned
in a pg_init_privs entry. This turns out to be the wrong thing,
because there is nothing to cue REASSIGN OWNED to go and update
pg_init_privs entries when the object's ownership is reassigned.
That leads to leaving dangling entries in pg_init_privs, as
reported by Hannu Krosing. Instead, install INITACL entries for
all roles mentioned in pg_init_privs entries (except pinned roles),
and change ALTER OWNER to not touch them, just as it doesn't
touch pg_init_privs entries.
REASSIGN OWNED will now substitute the new owner OID for the old
in pg_init_privs entries. This feels like perhaps not quite the
right thing, since pg_init_privs ought to be a historical record
of the state of affairs just after CREATE EXTENSION. However,
it's hard to see what else to do, if we don't want to disallow
dropping the object's original owner. In any case this is
better than the previous do-nothing behavior, and we're unlikely
to come up with a superior solution in time for v17.
While here, tighten up some coding rules about how ACLs in
pg_init_privs should never be null or empty. There's not any
obvious reason to allow that, and perhaps asserting that it's
not so will catch some bugs. (We were previously inconsistent
on the point, with some code paths taking care not to store
empty ACLs and others not.)
This leaves recordExtensionInitPrivWorker not doing anything
with its ownerId argument, but we'll deal with that separately.
catversion bump forced because of change of expected contents
of pg_shdepend when pg_init_privs entries exist.
Discussion: https://postgr.es/m/CAMT0RQSVgv48G5GArUvOVhottWqZLrvC5wBzBa4HrUdXe9VRXw@mail.gmail.com
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DeleteInitPrivs did not get the memo about how, when dropping a
whole object (with subid == 0), you should drop entries relating
to its sub-objects too. This is visible in the test_pg_dump test
case if one drops the extension at the end: the entry for
GRANT SELECT(col1) ON regress_pg_dump_table TO public;
was still present in pg_init_privs afterwards, although it was
pointing to a dangling table OID.
Noted while fooling with a fix for REASSIGN OWNED for pg_init_privs
entries. This bug is aboriginal in the pg_init_privs feature
though, and there seems no reason not to back-patch the fix.
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Run pgindent, pgperltidy, and reformat-dat-files.
The pgindent part of this is pretty small, consisting mainly of
fixing up self-inflicted formatting damage from patches that
hadn't bothered to add their new typedefs to typedefs.list.
In order to keep it from making anything worse, I manually added
a dozen or so typedefs that appeared in the existing typedefs.list
but not in the buildfarm's list. Perhaps we should formalize that,
or better find a way to get those typedefs into the automatic list.
pgperltidy is as opinionated as always, and reformat-dat-files too.
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If the bootstrap superuser's name requires quoting, regroleout
will supply double quotes ... but the result of CURRENT_USER
is just the literal name. Apply quote_ident() to ensure a match.
Per Andrew Dunstan's off-list investigation of buildfarm member
prion's failures.
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David Rowley correctly pointed out that I'd collat-ified only
one of the two troublesome queries. Definitely not my day.
Discussion: https://postgr.es/m/CAApHDvo8pMk5WWFAqwGzuQ-Xh+957W61io_OsCP0oUzqCCODTg@mail.gmail.com
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Should have thought of the need for this.
(Local testing suggests that we may still not be out of the
woods, but certainly this much is needed.)
Per buildfarm and David Rowley.
Discussion: https://postgr.es/m/CAApHDvo8pMk5WWFAqwGzuQ-Xh+957W61io_OsCP0oUzqCCODTg@mail.gmail.com
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I'd not checked that this iteration of the test actually worked
with a bootstrap superuser not named 'postgres'. It didn't,
because the coercion rules for CASE caused us to try to cast
the 'postgres' literal to regrole. Mea culpa.
Per buildfarm (via Alexander Korotkov)
Discussion: https://postgr.es/m/CAPpHfdsV=iTvH6B858hnH1bLgewYH6cdTnO_eOOw9EOa8kehkA@mail.gmail.com
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This had been disabled because the test "doesn't delete its user".
It doesn't seem like a great idea for the meson tests to act
differently from the makefile tests, though, and the makefiles
had no such exception (which is how come only copperhead noticed
the problem just fixed in 534287403). In any case, the premise
is false since 936e3fa37, so let's remove the restriction.
Discussion: https://postgr.es/m/2857513.1713733688@sss.pgh.pa.us
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If an ACL recorded in pg_init_privs mentions a non-pinned role,
that reference must also be noted in pg_shdepend so that we know
that the role can't go away without removing the ACL reference.
Otherwise, DROP ROLE could succeed and leave dangling entries
behind, which is what's causing the recent upgrade-check failures
on buildfarm member copperhead.
This has been wrong since pg_init_privs was introduced, but it's
escaped notice because typical pg_init_privs entries would only
mention the bootstrap superuser (pinned) or at worst the owner
of the extension (who can't go away before the extension does).
We lack even a representation of such a role reference for
pg_shdepend. My first thought for a solution was entries listing
pg_init_privs in classid, but that doesn't work because then there's
noplace to put the granted-on object's classid. Rather than adding
a new column to pg_shdepend, let's add a new deptype code
SHARED_DEPENDENCY_INITACL. Much of the associated boilerplate
code can be cribbed from code for SHARED_DEPENDENCY_ACL.
A lot of the bulk of this patch just stems from the new need to pass
the object's owner ID to recordExtensionInitPriv, so that we can
consult it while updating pg_shdepend. While many callers have that
at hand already, a few places now need to fetch the owner ID of an
arbitrary privilege-bearing object. For that, we assume that there
is a catcache on the relevant catalog's OID column, which is an
assumption already made in ExecGrant_common so it seems okay here.
We do need an entirely new routine RemoveRoleFromInitPriv to perform
cleanup of pg_init_privs ACLs during DROP OWNED BY. It's analogous
to RemoveRoleFromObjectACL, but we can't share logic because that
function operates by building a command parsetree and invoking
existing GRANT/REVOKE infrastructure. There is of course no SQL
command that would update pg_init_privs entries when we're not in
process of creating their extension, so we need a routine that can
do the updates directly.
catversion bump because this changes the expected contents of
pg_shdepend. For the same reason, there's no hope of back-patching
this, even though it fixes a longstanding bug. Fortunately, the
case where it's a problem seems to be near nonexistent in the field.
If it weren't for the buildfarm breakage, I'd have been content to
leave this for v18.
Patch by me; thanks to Daniel Gustafsson for review and discussion.
Discussion: https://postgr.es/m/1745535.1712358659@sss.pgh.pa.us
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Project policy is to not leave global objects behind after a regress
test run. This was found as a result of the development of a patch
to make pg_regress detect such leftovers automatically, which in the
end was withdrawn due to issues with parallel runs.
Discussion: https://postgr.es/m/E1phvk7-000VAH-7k@gemulon.postgresql.org
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This option (or equivalently specifying "exclude extension pattern" in
a filter file) allows extensions matching the specified pattern to be
excluded from the dump.
Ayush Vatsa, reviewed by Junwang Zhao, Dean Rasheed, and Daniel
Gustafsson.
Discussion: https://postgr.es/m/CACX+KaP=VgVy9h-EUh598DTu+-fNr1jyEmpghC8rRp9s=w33Kg@mail.gmail.com
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Apply the changes from 41a284411e0 to the test_pg_dump module as well.
Here, we just apply the new test consistency checks, but we don't need
to fix any existing tests.
Discussion: https://www.postgresql.org/message-id/flat/1f8cb371-e84e-434e-0367-6b716fb16fa1@eisentraut.org
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Reported-by: Michael Paquier
Discussion: https://postgr.es/m/ZZKTDPxBBMt3C0J9@paquier.xyz
Backpatch-through: 12
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There are a lot of Perl scripts in the tree, mostly code generation
and TAP tests. Occasionally, these scripts produce warnings. These
are probably always mistakes on the developer side (true positives).
Typical examples are warnings from genbki.pl or related when you make
a mess in the catalog files during development, or warnings from tests
when they massage a config file that looks different on different
hosts, or mistakes during merges (e.g., duplicate subroutine
definitions), or just mistakes that weren't noticed because there is a
lot of output in a verbose build.
This changes all warnings into fatal errors, by replacing
use warnings;
by
use warnings FATAL => 'all';
in all Perl files.
Discussion: https://www.postgresql.org/message-id/flat/06f899fd-1826-05ab-42d6-adeb1fd5e200%40eisentraut.org
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Semi-blind attempt to fix a70f2a57f to work on Windows,
along the same lines as 5253519b2. Per buildfarm.
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checkExtensionMembership() set the DUMP_COMPONENT_SECLABEL and
DUMP_COMPONENT_POLICY flags for extension member objects, even though
we lack any infrastructure for tracking extensions' initial settings
of these properties. This is not OK. The result was that a dump
would always include commands to set these properties for extension
objects that have them, with at least three negative consequences:
1. The restoring user might not have privilege to set these properties
on these objects.
2. The properties might be incorrect/irrelevant for the version of the
extension that's installed in the destination database.
3. The dump itself might fail, in the case of RLS properties attached
to extension tables that the dumping user lacks privilege to LOCK.
(That's because we must get at least AccessShareLock to ensure that
we don't fail while trying to decompile the RLS expressions.)
When and if somebody cares to invent initial-state infrastructure for
extensions' RLS policies and security labels, we could think about
finding another way around problem #3. But in the absence of such
infrastructure, this whole thing is just wrong and we shouldn't do it.
(Note: this applies only to ordinary dumps; binary-upgrade dumps
still dump and restore extension member objects separately, with
all properties.)
Tom Lane and Jacob Champion. Back-patch to all supported branches.
Discussion: https://postgr.es/m/00d46a48-3324-d9a0-49bf-e7f0f11d1038@timescale.com
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Run pgindent, pgperltidy, and reformat-dat-files.
This set of diffs is a bit larger than typical. We've updated to
pg_bsd_indent 2.1.2, which properly indents variable declarations that
have multi-line initialization expressions (the continuation lines are
now indented one tab stop). We've also updated to perltidy version
20230309 and changed some of its settings, which reduces its desire to
add whitespace to lines to make assignments etc. line up. Going
forward, that should make for fewer random-seeming changes to existing
code.
Discussion: https://postgr.es/m/20230428092545.qfb3y5wcu4cm75ur@alvherre.pgsql
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PL/pgSQL was misspelled in a few places, so fix these.
Author: Zhang Mingli
Reviewed-by: Richard Guo
Discussion: https://postgr.es/m/1bd41572-9cd9-465e-9f59-ee45385e51b4@Spark
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Previously, meson installed modules under src/test/modules/ as part of
a normal installation, even though these files are only meant for use
by tests. This is because there is no way to set up up the build
system to install extra things only when told.
This patch fixes that with a workaround: We don't install these
modules as part of meson install, but we create a new "test" that runs
before the real tests whose action it is to install these files. The
installation is done by manual copies using a small helper script.
Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/2a039e8e-f31f-31e8-afe7-bab3130ad2de%40enterprisedb.com
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Backpatch-through: 11
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Discussion: https://postgr.es/m/222b43a5-2fb3-2c1b-9cd0-375d376c8246@dunslane.net
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To run all tests that support running against existing server:
$ meson test --setup running
To run just the main pg_regress tests against existing server:
$ meson test --setup running regress-running/regress
To ensure the 'running' setup continues to work, test it as part of the
freebsd CI task.
Discussion: https://postgr.es/m/CAH2-Wz=XDQcmLoo7RR_i6FKQdDmcyb9q5gStnfuuQXrOGhB2sQ@mail.gmail.com
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For historical reasons, pg_dump refers to large objects as "BLOBs".
This term is not used anywhere else in PostgreSQL, and it also means
something different in the SQL standard and other SQL systems.
This patch renames internal functions, code comments, documentation,
etc. to use the "large object" or "LO" terminology instead. There is
no functionality change, so the archive format still uses the name
"BLOB" for the archive entry. Additional long command-line options
are added with the new naming.
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://www.postgresql.org/message-id/flat/868a381f-4650-9460-1726-1ffd39a270b4%40enterprisedb.com
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Compression specifications are currently used by pg_basebackup and
pg_receivewal, and are able to let the user control in an extended way
the method and level of compression used. As an effect of this commit,
pg_dump's -Z/--compress is now able to use more than just an integer, as
of the grammar "method[:detail]".
The method can be either "none" or "gzip", and can optionally take a
detail string. If the detail string is only an integer, it defines the
compression level. A comma-separated list of keywords can also be used
method allows for more options, the only keyword supported now is
"level".
The change is backward-compatible, hence specifying only an integer
leads to no compression for a level of 0 and gzip compression when the
level is greater than 0.
Most of the code changes are straight-forward, as pg_dump was relying on
an integer tracking the compression level to check for gzip or no
compression. These are changed to use a compression specification and
the algorithm stored in it.
As of this change, note that the dump format is not bumped because there
is no need yet to track the compression algorithm in the TOC entries.
Hence, we still rely on the compression level to make the difference
when reading them. This will be mandatory once a new compression method
is added, though.
In order to keep the code simpler when parsing the compression
specification, the code is changed so as pg_dump now fails hard when
using gzip on -Z/--compress without its support compiled, rather than
enforcing no compression without the user knowing about it except
through a warning. Like before this commit, archive and custom formats
are compressed by default when the code is compiled with gzip, and left
uncompressed without gzip.
Author: Georgios Kokolatos
Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/O4mutIrCES8ZhlXJiMvzsivT7ztAMja2lkdL1LJx6O5f22I2W8PBIeLKz7mDLwxHoibcnRAYJXm1pH4tyUNC4a8eDzLn22a6Pb1S74Niexg=@pm.me
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Autoconf is showing its age, fewer and fewer contributors know how to wrangle
it. Recursive make has a lot of hard to resolve dependency issues and slow
incremental rebuilds. Our home-grown MSVC build system is hard to maintain for
developers not using Windows and runs tests serially. While these and other
issues could individually be addressed with incremental improvements, together
they seem best addressed by moving to a more modern build system.
After evaluating different build system choices, we chose to use meson, to a
good degree based on the adoption by other open source projects.
We decided that it's more realistic to commit a relatively early version of
the new build system and mature it in tree.
This commit adds an initial version of a meson based build system. It supports
building postgres on at least AIX, FreeBSD, Linux, macOS, NetBSD, OpenBSD,
Solaris and Windows (however only gcc is supported on aix, solaris). For
Windows/MSVC postgres can now be built with ninja (faster, particularly for
incremental builds) and msbuild (supporting the visual studio GUI, but
building slower).
Several aspects (e.g. Windows rc file generation, PGXS compatibility, LLVM
bitcode generation, documentation adjustments) are done in subsequent commits
requiring further review. Other aspects (e.g. not installing test-only
extensions) are not yet addressed.
When building on Windows with msbuild, builds are slower when using a visual
studio version older than 2019, because those versions do not support
MultiToolTask, required by meson for intra-target parallelism.
The plan is to remove the MSVC specific build system in src/tools/msvc soon
after reaching feature parity. However, we're not planning to remove the
autoconf/make build system in the near future. Likely we're going to keep at
least the parts required for PGXS to keep working around until all supported
versions build with meson.
Some initial help for postgres developers is at
https://wiki.postgresql.org/wiki/Meson
With contributions from Thomas Munro, John Naylor, Stone Tickle and others.
Author: Andres Freund <andres@anarazel.de>
Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Author: Peter Eisentraut <peter@eisentraut.org>
Reviewed-By: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Discussion: https://postgr.es/m/20211012083721.hvixq4pnh2pixr3j@alap3.anarazel.de
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Run pgindent, pgperltidy, and reformat-dat-files.
I manually fixed a couple of comments that pgindent uglified.
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This patch allows "PGC_SUSET" parameters to be set by non-superusers
if they have been explicitly granted the privilege to do so.
The privilege to perform ALTER SYSTEM SET/RESET on a specific parameter
can also be granted.
Such privileges are cluster-wide, not per database. They are tracked
in a new shared catalog, pg_parameter_acl.
Granting and revoking these new privileges works as one would expect.
One caveat is that PGC_USERSET GUCs are unaffected by the SET privilege
--- one could wish that those were handled by a revocable grant to
PUBLIC, but they are not, because we couldn't make it robust enough
for GUCs defined by extensions.
Mark Dilger, reviewed at various times by Andrew Dunstan, Robert Haas,
Joshua Brindle, and myself
Discussion: https://postgr.es/m/3D691E20-C1D5-4B80-8BA5-6BEB63AF3029@enterprisedb.com
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The Config and Cwd modules were no longer used, but remained imported,
in a number of tests. Remove to keep the imports to the actually used
modules.
Reviewed-by: Andrew Dunstan <andrew@dunslane.net>
Discussion: https://postgr.es/m/A5A074CD-3198-492B-BE5E-7961EFC3733F@yesql.se
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Rather than doing manual book keeping to plan the number of tests to run
in each TAP suite, conclude each run with done_testing() summing up the
the number of tests that ran. This removes the need for maintaning and
updating the plan count at the expense of an accurate count of remaining
during the test suite runtime.
This patch has been discussed a number of times, often in the context of
other patches which updates tests, so a larger number of discussions can
be found in the archives.
Reviewed-by: Julien Rouhaud <rjuju123@gmail.com>
Reviewed-by: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Discussion: https://postgr.es/m/DD399313-3D56-4666-8079-88949DAC870F@yesql.se
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Backpatch-through: 10
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The five modules in our TAP test framework all had names in the top
level namespace. This is unwise because, even though we're not
exporting them to CPAN, the names can leak, for example if they are
exported by the RPM build process. We therefore move the modules to the
PostgreSQL::Test namespace. In the process PostgresNode is renamed to
Cluster, and TestLib is renamed to Utils. PostgresVersion becomes simply
PostgreSQL::Version, to avoid possible confusion about what it's the
version of.
Discussion: https://postgr.es/m/aede93a4-7d92-ef26-398f-5094944c2504@dunslane.net
Reviewed by Erik Rijkers and Michael Paquier
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Author: Amul Sul
Discussion: https://postgr.es/m/CAAJ_b96xuFh4JZE6p-zhLyDu7q=NbxJfb1z_yeAu6t-MqaBC+Q@mail.gmail.com
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There is only one constructor now for PostgresNode, with the idiomatic
name 'new'. The method is not exported by the class, and must be called
as "PostgresNode->new('name',[args])". All the TAP tests that use
PostgresNode are modified accordingly. Third party scripts will need
adjusting, which is a fairly mechanical process (I just used a sed
script).
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As a side effect, this corrects dumps of public schema ACLs in databases
where the DBA dropped and recreated that schema.
Reviewed by Asif Rehman.
Discussion: https://postgr.es/m/20201229134924.GA1431748@rfd.leadboat.com
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6568cef, that introduced the option, had an inconsistent behavior when
it comes to configuration tables set up by pg_extension_config_dump, as
the data of all configuration tables would included in a dump even for
extensions not listed by a set of --extension switches.
The contents dumped changed depending on the schema where an extension
was installed when an extension was not listed. For example, an
extension installed under the public schema would have its configuration
data not dumped even when not listed with --extension, which was
inconsistent with the case of an extension installed on a non-public
schema, where the configuration would be dumped.
Per discussion with Noah, we have settled down to the simple rule of
dumping configuration data of an extension if it is listed in
--extension (default is unchanged and backward-compatible, to dump
everything on sight if there are no extensions directly listed). This
avoids some weird cases where the dumps depended on a --schema for one.
More tests are added to cover the gap, where we cross-check more
behaviors depending on --schema when an extension is not listed.
Reported-by: Noah Misch
Reviewed-by: Noah Misch
Discussion: https://postgr.es/m/20210404220802.GA728316@rfd.leadboat.com
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These got introduced in 6568cef.
Reported-by: Noah Misch
Discussion: https://postgr.es/m/20210404220802.GA728316@rfd.leadboat.com
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When specified, only extensions matching the given pattern are included
in dumps. Similarly to --table and --schema, when --strict-names is
used, a perfect match is required. Also, like the two other options,
this new option offers no guarantee that dependent objects have been
dumped, so a restore may fail on a clean database.
Tests are added in test_pg_dump/, checking after a set of positive and
negative cases, with or without an extension's contents added to the
dump generated.
Author: Guillaume Lelarge
Reviewed-by: David Fetter, Tom Lane, Michael Paquier, Asif Rehman,
Julien Rouhaud
Discussion: https://postgr.es/m/CAECtzeXOt4cnMU5+XMZzxBPJ_wu76pNy6HZKPRBL-j7yj1E4+g@mail.gmail.com
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The context is an object that no longer bears some aclitem that it bore
initially. (A user issued REVOKE or GRANT statements upon the object.)
pg_dump is forming SQL to reproduce the object ACL. Since initdb
creates no ACL bearing GRANT OPTION, reaching this bug requires an
extension where the creation script establishes such an ACL. No PGXN
extension does that. If an installation did reach the bug, pg_dump
would have omitted a semicolon, causing a REVOKE and the next SQL
statement to fail. Separately, since the affected code exists to
eliminate an entire aclitem, it wants plain REVOKE, not REVOKE GRANT
OPTION FOR. Back-patch to 9.6, where commit
23f34fa4ba358671adab16773e79c17c92cbc870 first appeared.
Discussion: https://postgr.es/m/20210109102423.GA160022@rfd.leadboat.com
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Commit 3eb3d3e78 was a few bricks shy of a load: while it correctly
set the table's "interesting" flag when deciding to dump the data of
an extension config table, it was not correct to clear that flag
if we concluded we shouldn't dump the data. This led to the crash
reported in bug #16655, because in fact we'll traverse dumpTableSchema
anyway for all extension tables (to see if they have user-added
seclabels or RLS policies).
The right thing to do is to force "interesting" true in makeTableDataInfo,
and otherwise leave the flag alone. (Doing it there is more future-proof
in case additional calls are added, and it also avoids setting the flag
unnecessarily if that function decides the table is non-dumpable.)
This investigation also showed that while only the --inserts code path
had an obvious failure in the case considered by 3eb3d3e78, the COPY
code path also has a problem with not having loaded table subsidiary
data. That causes fmtCopyColumnList to silently return an empty string
instead of the correct column list. That accidentally mostly works,
which perhaps is why we didn't notice this before. It would only fail
if the restore column order is different from the dump column order,
which only happens in weird inheritance cases, so it's not surprising
nobody had hit the case with an extension config table. Nonetheless,
it's a bug, and it goes a long way back, not just to v12 where the
--inserts code path started to have a problem with this.
In hopes of catching such cases a bit sooner in future, add some
Asserts that "interesting" has been set in both dumpTableData and
dumpTableSchema. Adjust the test case added by 3eb3d3e78 so that it
checks the COPY rather than INSERT form of that bug, allowing it to
detect the longer-standing symptom.
Per bug #16655 from Cameron Daniel. Back-patch to all supported
branches.
Discussion: https://postgr.es/m/16655-5c92d6b3a9438137@postgresql.org
Discussion: https://postgr.es/m/18048b44-3414-b983-8c7c-9165b177900d@2ndQuadrant.com
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If this data is not collected, pg_dump segfaults if asked for column
inserts.
Fix by Fabrízio de Royes Mello
Backpatch to release 12 where the bug was introduced.
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Make use of the general object support already used by COMMENT, DROP,
and SECURITY LABEL.
Discussion: https://www.postgresql.org/message-id/flat/163c00a5-f634-ca52-fc7c-0e53deda8735%402ndquadrant.com
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recordExtObjInitPriv and removeExtObjInitPriv were sloppy about
calling ReleaseSysCache. The cases cannot occur given current usage
in ALTER EXTENSION ADD/DROP, since we wouldn't get here for these
relkinds; but it seems wise to clean up better.
In passing, extend test logic in test_pg_dump to exercise the
dropped-column code paths here.
Since the case is unreachable at present, there seems no great
need to back-patch; hence fix HEAD only.
Kyotaro Horiguchi, with test case and comment adjustments by me
Discussion: https://postgr.es/m/20200417.151831.1153577605111650154.horikyota.ntt@gmail.com
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