@matheusbsbs / matheus-bagliano / commits / 300b38e46f

refs: use transaction in `refs_create_symref()`

The `refs_create_symref()` function updates a symref to a given new target. To do this, it uses a ref-backend specific function `create_symref()`. In the previous commits, we introduced symref support in transactions. This means we can now use transactions to perform symref updates and don't have to resort to `create_symref()`. Doing this allows us to remove and cleanup `create_symref()`, which we will do in the following commit. Modify the expected error message for a test in 't/t0610-reftable-basics.sh', since the error is now thrown from 'refs.c'. This is because in transactional updates, F/D conflicts are caught before we're in the reference backend. Signed-off-by: Karthik Nayak <karthik.188@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Karthik Nayak committed May 7, 2024 at 14:58 UTC 300b38e46f951bab8c6c5cb779b59322be321081

3 files changed +41 -8

refs.c

+17 -7

index d0ea7573d8..507f5f0525 100644 --- a/refs.c +++ b/refs.c @@ -2289,14 +2289,24 @@ int refs_create_symref(struct ref_store *refs, const char *refs_heads_master, const char *logmsg) { - char *msg; - int retval; + struct ref_transaction *transaction; + struct strbuf err = STRBUF_INIT; + int ret = 0; - msg = normalize_reflog_message(logmsg); - retval = refs->be->create_symref(refs, ref_target, refs_heads_master, - msg); - free(msg); - return retval; + transaction = ref_store_transaction_begin(refs, &err); + if (!transaction || + ref_transaction_update(transaction, ref_target, NULL, NULL, + refs_heads_master, NULL, REF_NO_DEREF, + logmsg, &err) || + ref_transaction_commit(transaction, &err)) { + ret = error("%s", err.buf); + } + + strbuf_release(&err); + if (transaction) + ref_transaction_free(transaction); + + return ret; } int create_symref(const char *ref_target, const char *refs_heads_master,

t/t0610-reftable-basics.sh

+1 -1

index 931d888bbb..01758fc565 100755 --- a/t/t0610-reftable-basics.sh +++ b/t/t0610-reftable-basics.sh @@ -255,7 +255,7 @@ test_expect_success 'ref transaction: creating symbolic ref fails with F/D confl git init repo && test_commit -C repo A && cat >expect <<-EOF && - error: unable to write symref for refs/heads: file/directory conflict + error: ${SQ}refs/heads/main${SQ} exists; cannot create ${SQ}refs/heads${SQ} EOF test_must_fail git -C repo symbolic-ref refs/heads refs/heads/foo 2>err && test_cmp expect err

t/t1416-ref-transaction-hooks.sh

+23

index 2092488090..067fd57290 100755 --- a/t/t1416-ref-transaction-hooks.sh +++ b/t/t1416-ref-transaction-hooks.sh @@ -134,4 +134,27 @@ test_expect_success 'interleaving hook calls succeed' ' test_cmp expect target-repo.git/actual ' +test_expect_success 'hook captures git-symbolic-ref updates' ' + test_when_finished "rm actual" && + + test_hook reference-transaction <<-\EOF && + echo "$*" >>actual + while read -r line + do + printf "%s\n" "$line" + done >>actual + EOF + + git symbolic-ref refs/heads/symref refs/heads/main && + + cat >expect <<-EOF && + prepared + $ZERO_OID ref:refs/heads/main refs/heads/symref + committed + $ZERO_OID ref:refs/heads/main refs/heads/symref + EOF + + test_cmp expect actual +' + test_done