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[PATCH 03/20] refs.c: make ref_transaction_begin take an err argument

From
Ronnie Sahlberg <sahlberg@google.com>
Date
Jul 15, 2014, 23:34 UTC
Message-ID
<1405467258-24102-4-git-send-email-sahlberg@google.com>
In-Reply-To
<1405467258-24102-1-git-send-email-sahlberg@google.com>

Add an err argument to _begin so that on non-fatal failures in future ref backends we can report a nice error back to the caller. While _begin can currently never fail for other reasons than OOM, in which case we die() anyway, we may add other types of backends in the future. For example, a hypothetical MySQL backend could fail in _begin with "Can not connect to MySQL server. No route to host".

Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
---
 builtin/update-ref.c | 2 +-
 refs.c               | 2 +-
 refs.h               | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/builtin/update-ref.c b/builtin/update-ref.c
index 7c9c248..c6ad0be 100644
--- a/builtin/update-ref.c
+++ b/builtin/update-ref.c
@@ -365,7 +365,7 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
 		die("Refusing to perform update with empty message.");
 
 	if (read_stdin) {
-		transaction = ref_transaction_begin();
+		transaction = ref_transaction_begin(&err);
 		if (delete || no_deref || argc > 0)
 			usage_with_options(git_update_ref_usage, options);
 		if (end_null)
diff --git a/refs.c b/refs.c
index 40f04f4..9cb7908 100644
--- a/refs.c
+++ b/refs.c
@@ -3397,7 +3397,7 @@ struct ref_transaction {
 	size_t nr;
 };
 
-struct ref_transaction *ref_transaction_begin(void)
+struct ref_transaction *ref_transaction_begin(struct strbuf *err)
 {
 	return xcalloc(1, sizeof(struct ref_transaction));
 }
diff --git a/refs.h b/refs.h
index 71389a1..3f37c65 100644
--- a/refs.h
+++ b/refs.h
@@ -262,7 +262,7 @@ enum action_on_err {
  * Begin a reference transaction.  The reference transaction must
  * be freed by calling ref_transaction_free().
  */
-struct ref_transaction *ref_transaction_begin(void);
+struct ref_transaction *ref_transaction_begin(struct strbuf *err);
 
 /*
  * The following functions add a reference check or update to a
-- 
2.0.1.442.g7fe6834.dirty
Previous: Ronnie SahlbergNext: Ronnie Sahlberg
Message 4 of 24 in “ref transactions part 2”
  1. 00/20 ref transactions part 2Ronnie Sahlberg, Jul 15, 2014
  2. 01/20 refs.c: change ref_transaction_create to do error checking and return statusRonnie Sahlberg, Jul 15, 2014
  3. 02/20 refs.c: update ref_transaction_delete to check for error and return statusRonnie Sahlberg, Jul 15, 2014
  4. 03/20 refs.c: make ref_transaction_begin take an err argumentRonnie Sahlberg, Jul 15, 2014
  5. 04/20 refs.c: add transaction.status and track OPEN/CLOSED/ERRORRonnie Sahlberg, Jul 15, 2014
  6. 05/20 tag.c: use ref transactions when doing updatesRonnie Sahlberg, Jul 15, 2014
  7. 06/20 replace.c: use the ref transaction functions for updatesRonnie Sahlberg, Jul 15, 2014
  8. 07/20 commit.c: use ref transactions for updatesRonnie Sahlberg, Jul 15, 2014
  9. 08/20 sequencer.c: use ref transactions for all ref updatesRonnie Sahlberg, Jul 15, 2014
  10. 09/20 fast-import.c: change update_branch to use ref transactionsRonnie Sahlberg, Jul 15, 2014
  11. 10/20 branch.c: use ref transaction for all ref updatesRonnie Sahlberg, Jul 15, 2014
  12. 11/20 refs.c: change update_ref to use a transactionRonnie Sahlberg, Jul 15, 2014
  13. 12/20 receive-pack.c: use a reference transaction for updating the refsRonnie Sahlberg, Jul 15, 2014
  14. 13/20 fast-import.c: use a ref transaction when dumping tagsRonnie Sahlberg, Jul 15, 2014
  15. 14/20 walker.c: use ref transaction for ref updatesRonnie Sahlberg, Jul 15, 2014
  16. 15/20 refs.c: make lock_ref_sha1 staticRonnie Sahlberg, Jul 15, 2014
  17. 16/20 refs.c: remove the update_ref_lock functionRonnie Sahlberg, Jul 15, 2014
  18. 17/20 refs.c: remove the update_ref_write functionRonnie Sahlberg, Jul 15, 2014
  19. 18/20 refs.c: remove lock_ref_sha1Ronnie Sahlberg, Jul 15, 2014
  20. 19/20 refs.c: make prune_ref use a transaction to delete the refRonnie Sahlberg, Jul 15, 2014
  21. 20/20 refs.c: make delete_ref use a transactionRonnie Sahlberg, Jul 15, 2014
  22. Ronnie SahlbergJul 15, 2014
  23. Junio C HamanoJul 16, 2014
  24. Ronnie SahlbergJul 16, 2014

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