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gc: add gc.repackFilter config option

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A previous commit has implemented `git repack --filter=<filter-spec>` to
allow users to filter out some objects from the main pack and move them
into a new different pack.

Users might want to perform such a cleanup regularly at the same time as
they perform other repacks and cleanups, so as part of `git gc`.

Let's allow them to configure a <filter-spec> for that purpose using a
new gc.repackFilter config option.

Now when `git gc` will perform a repack with a <filter-spec> configured
through this option and not empty, the repack process will be passed a
corresponding `--filter=<filter-spec>` argument.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder 2023-10-02 18:55:02 +02:00 committed by Junio C Hamano
parent 48a9b67b43
commit 1cd43a9ed9
3 changed files with 24 additions and 0 deletions
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5
Documentation/config/gc.txt
View file

@ -145,6 +145,11 @@ Multiple hooks are supported, but all must exit successfully, else the
operation (either generating a cruft pack or unpacking unreachable
objects) will be halted.
gc.repackFilter::
When repacking, use the specified filter to move certain
objects into a separate packfile. See the
`--filter=<filter-spec>` option of linkgit:git-repack[1].
gc.rerereResolved::
Records of conflicted merge you resolved earlier are
kept for this many days when 'git rerere gc' is run.

6
builtin/gc.c
View file

@ -61,6 +61,7 @@ static timestamp_t gc_log_expire_time;
static const char *gc_log_expire = "1.day.ago";
static const char *prune_expire = "2.weeks.ago";
static const char *prune_worktrees_expire = "3.months.ago";
static char *repack_filter;
static unsigned long big_pack_threshold;
static unsigned long max_delta_cache_size = DEFAULT_DELTA_CACHE_SIZE;
@ -170,6 +171,8 @@ static void gc_config(void)
git_config_get_ulong("gc.bigpackthreshold", &big_pack_threshold);
git_config_get_ulong("pack.deltacachesize", &max_delta_cache_size);
git_config_get_string("gc.repackfilter", &repack_filter);
git_config(git_default_config, NULL);
}
@ -355,6 +358,9 @@ static void add_repack_all_option(struct string_list *keep_pack)
if (keep_pack)
for_each_string_list(keep_pack, keep_one_pack, NULL);
if (repack_filter && *repack_filter)
strvec_pushf(&repack, "--filter=%s", repack_filter);
}
static void add_repack_incremental_option(void)

13
t/t6500-gc.sh
View file

@ -202,6 +202,19 @@ test_expect_success 'one of gc.reflogExpire{Unreachable,}=never does not skip "e
grep -E "^trace: (built-in|exec|run_command): git reflog expire --" trace.out
'
test_expect_success 'gc.repackFilter launches repack with a filter' '
test_when_finished "rm -rf bare.git" &&
git clone --no-local --bare . bare.git &&
git -C bare.git -c gc.cruftPacks=false gc &&
test_stdout_line_count = 1 ls bare.git/objects/pack/*.pack &&
GIT_TRACE=$(pwd)/trace.out git -C bare.git -c gc.repackFilter=blob:none \
-c repack.writeBitmaps=false -c gc.cruftPacks=false gc &&
test_stdout_line_count = 2 ls bare.git/objects/pack/*.pack &&
grep -E "^trace: (built-in|exec|run_command): git repack .* --filter=blob:none ?.*" trace.out
'
prepare_cruft_history () {
test_commit base &&