From: Michael Haggerty <mhagger@alum.mit.edu>
To: Junio C Hamano <gitster@pobox.com>
Cc: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
"Stefan Beller" <sbeller@google.com>, "Jeff King" <peff@peff.net>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Brandon Williams" <bmwill@google.com>,
git@vger.kernel.org, "Michael Haggerty" <mhagger@alum.mit.edu>
Subject: [PATCH v2 04/11] packed_delete_refs(): implement method
Date: Fri, 8 Sep 2017 15:51:46 +0200 [thread overview]
Message-ID: <efcd2e74427a4b05566c1afaf81af02f4f9a5672.1504877858.git.mhagger@alum.mit.edu> (raw)
In-Reply-To: <cover.1504877858.git.mhagger@alum.mit.edu>
Implement `packed_delete_refs()` using a reference transaction. This
means that `files_delete_refs()` can use `refs_delete_refs()` instead
of `repack_without_refs()` to delete any packed references, decreasing
the coupling between the classes.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
refs/files-backend.c | 2 +-
refs/packed-backend.c | 45 ++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 45 insertions(+), 2 deletions(-)
diff --git a/refs/files-backend.c b/refs/files-backend.c
index fccbc24ac4..2c78f63494 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -1157,7 +1157,7 @@ static int files_delete_refs(struct ref_store *ref_store, const char *msg,
if (packed_refs_lock(refs->packed_ref_store, 0, &err))
goto error;
- if (repack_without_refs(refs->packed_ref_store, refnames, &err)) {
+ if (refs_delete_refs(refs->packed_ref_store, msg, refnames, flags)) {
packed_refs_unlock(refs->packed_ref_store);
goto error;
}
diff --git a/refs/packed-backend.c b/refs/packed-backend.c
index 9ab65c5a0a..9d5f76b1dc 100644
--- a/refs/packed-backend.c
+++ b/refs/packed-backend.c
@@ -1086,7 +1086,50 @@ static int packed_initial_transaction_commit(struct ref_store *ref_store,
static int packed_delete_refs(struct ref_store *ref_store, const char *msg,
struct string_list *refnames, unsigned int flags)
{
- die("BUG: not implemented yet");
+ struct packed_ref_store *refs =
+ packed_downcast(ref_store, REF_STORE_WRITE, "delete_refs");
+ struct strbuf err = STRBUF_INIT;
+ struct ref_transaction *transaction;
+ struct string_list_item *item;
+ int ret;
+
+ (void)refs; /* We need the check above, but don't use the variable */
+
+ if (!refnames->nr)
+ return 0;
+
+ /*
+ * Since we don't check the references' old_oids, the
+ * individual updates can't fail, so we can pack all of the
+ * updates into a single transaction.
+ */
+
+ transaction = ref_store_transaction_begin(ref_store, &err);
+ if (!transaction)
+ return -1;
+
+ for_each_string_list_item(item, refnames) {
+ if (ref_transaction_delete(transaction, item->string, NULL,
+ flags, msg, &err)) {
+ warning(_("could not delete reference %s: %s"),
+ item->string, err.buf);
+ strbuf_reset(&err);
+ }
+ }
+
+ ret = ref_transaction_commit(transaction, &err);
+
+ if (ret) {
+ if (refnames->nr == 1)
+ error(_("could not delete reference %s: %s"),
+ refnames->items[0].string, err.buf);
+ else
+ error(_("could not delete references: %s"), err.buf);
+ }
+
+ ref_transaction_free(transaction);
+ strbuf_release(&err);
+ return ret;
}
static int packed_pack_refs(struct ref_store *ref_store, unsigned int flags)
--
2.14.1
next prev parent reply other threads:[~2017-09-08 13:53 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-08 13:51 [PATCH v2 00/11] Implement transactions for the packed ref store Michael Haggerty
2017-09-08 13:51 ` [PATCH v2 01/11] packed-backend: don't adjust the reference count on lock/unlock Michael Haggerty
2017-09-08 13:51 ` [PATCH v2 02/11] struct ref_transaction: add a place for backends to store data Michael Haggerty
2017-09-08 13:51 ` [PATCH v2 03/11] packed_ref_store: implement reference transactions Michael Haggerty
2017-09-08 13:51 ` Michael Haggerty [this message]
2017-09-08 13:51 ` [PATCH v2 05/11] files_pack_refs(): use a reference transaction to write packed refs Michael Haggerty
2017-09-08 13:51 ` [PATCH v2 06/11] prune_refs(): also free the linked list Michael Haggerty
2017-09-08 13:51 ` [PATCH v2 07/11] files_initial_transaction_commit(): use a transaction for packed refs Michael Haggerty
2017-09-08 13:51 ` [PATCH v2 08/11] t1404: demonstrate two problems with reference transactions Michael Haggerty
2017-09-09 11:17 ` Jeff King
2017-09-10 5:07 ` Michael Haggerty
2017-09-08 13:51 ` [PATCH v2 09/11] files_ref_store: use a transaction to update packed refs Michael Haggerty
2017-09-08 13:51 ` [PATCH v2 10/11] packed-backend: rip out some now-unused code Michael Haggerty
2017-09-08 13:51 ` [PATCH v2 11/11] files_transaction_finish(): delete reflogs before references Michael Haggerty
2017-09-09 11:18 ` [PATCH v2 00/11] Implement transactions for the packed ref store Jeff King
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