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pack-refs: teach --exclude option to exclude refs from being packed

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At GitLab, we have a system that creates ephemeral internal refs that
don't live long before getting deleted. Having an option to exclude
certain refs from a packed-refs file allows these internal references to
be deleted much more efficiently.

Add an --exclude option to the pack-refs builtin, and use the ref
exclusions API to exclude certain refs from being packed into the final
packed-refs file

Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
John Cai
2023-05-12 21:34:41 +00:00
committed by Junio C Hamano
parent 283174b214
commit 826ae79fca
11 changed files with 69 additions and 20 deletions
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7
refs.h
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@ -63,6 +63,11 @@ struct worktree;
#define RESOLVE_REF_NO_RECURSE 0x02
#define RESOLVE_REF_ALLOW_BAD_NAME 0x04
struct pack_refs_opts {
unsigned int flags;
struct ref_exclusions *exclusions;
};
const char *refs_resolve_ref_unsafe(struct ref_store *refs,
const char *refname,
int resolve_flags,
@ -405,7 +410,7 @@ void warn_dangling_symrefs(FILE *fp, const char *msg_fmt,
* Write a packed-refs file for the current repository.
* flags: Combination of the above PACK_REFS_* flags.
*/
int refs_pack_refs(struct ref_store *refs, unsigned int flags);
int refs_pack_refs(struct ref_store *refs, struct pack_refs_opts *opts);
/*
* Setup reflog before using. Fill in err and return -1 on failure.