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[PATCH] receive-pack: refuse all commands if one fails in atomic mode

From
Stefan Beller <sbeller@google.com>
Date
Dec 16, 2014, 19:14 UTC
Message-ID
<1418757280-32412-1-git-send-email-sbeller@google.com>
In-Reply-To
<1418755747-22506-6-git-send-email-sbeller@google.com>
This patch will be incorporated into the right places in v3 of the series.
Signed-off-by: Stefan Beller <sbeller@google.com>
---
Notes:
    I don't want to resend the patch series today to accumulate comments,
    but this makes the last test pass, which is the whole point of the series.
    
    I'll put it into the right places in a reroll.
 builtin/receive-pack.c | 13 ++++++++++++-
 t/t5543-atomic-push.sh |  2 +-
 2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 0803fd2..3477f7c 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -1122,7 +1122,18 @@ static void execute_commands(struct command *commands,
 	}
 
 	if (use_atomic) {
-		if (ref_transaction_commit(transaction, &err)) {
+		/* update(...) may abort early (i.e. because the hook refused to
+		 * update that ref), which then doesn't even record a transaction
+		 * regarding that ref. Make sure all commands are without error
+		 * and then commit atomically. */
+		for (cmd = commands; cmd; cmd = cmd->next)
+			if (cmd->error_string)
+				break;
+		if (cmd) {
+			for (cmd = commands; cmd; cmd = cmd->next)
+				if (!cmd->error_string)
+					cmd->error_string = "atomic push failure";
+		} else if (ref_transaction_commit(transaction, &err)) {
 			rp_error("%s", err.buf);
 			for (cmd = commands; cmd; cmd = cmd->next)
 				cmd->error_string = err.buf;
diff --git a/t/t5543-atomic-push.sh b/t/t5543-atomic-push.sh
index 6354fc0..f0e54d9 100755
--- a/t/t5543-atomic-push.sh
+++ b/t/t5543-atomic-push.sh
@@ -142,7 +142,7 @@ test_expect_success 'atomic push fails if one tag fails remotely' '
 	test_ref_upstream second $(git -C workbench rev-parse --verify HEAD@{1})
 '
 
-test_expect_failure 'atomic push obeys update hook preventing a branch to be pushed' '
+test_expect_success 'atomic push obeys update hook preventing a branch to be pushed' '
 	mk_repo_pair &&
 	(
 		cd workbench &&
-- 
2.2.0.31.gad78000.dirty
Previous: Stefan BellerNext: Junio C Hamano
Message 28 of 56 in “Add a flag to push atomically”
  1. 0/5 Add a flag to push atomicallyStefan Beller, Dec 15, 2014
  2. 1/5 receive-pack.c: add protocol support to negotiate atomic-pushStefan Beller, Dec 15, 2014
  3. Junio C HamanoDec 15, 2014
  4. Stefan BellerDec 15, 2014
  5. 2/5 send-pack.c: add an --atomic-push command line argumentStefan Beller, Dec 15, 2014
  6. Junio C HamanoDec 15, 2014
  7. 3/5 receive-pack.c: use a single ref_transaction for atomic pushesStefan Beller, Dec 15, 2014
  8. Junio C HamanoDec 15, 2014
  9. 4/5 push.c: add an --atomic-push argumentStefan Beller, Dec 15, 2014
  10. Junio C HamanoDec 15, 2014
  11. 5/5 t5543-atomic-push.sh: add basic tests for atomic pushesStefan Beller, Dec 15, 2014
  12. Junio C HamanoDec 15, 2014
  13. Junio C HamanoDec 15, 2014
  14. 1/6 receive-pack.c: add protocol support to negotiate atomic-pushStefan Beller, Dec 16, 2014
  15. 2/6 send-pack: Invert the return value of ref_update_to_be_sentStefan Beller, Dec 16, 2014
  16. Junio C HamanoDec 16, 2014
  17. 3/6 send-pack.c: add --atomic command line argumentStefan Beller, Dec 16, 2014
  18. Junio C HamanoDec 16, 2014
  19. 4/6 receive-pack.c: use a single ref_transaction for atomic pushesStefan Beller, Dec 16, 2014
  20. Eric SunshineDec 16, 2014
  21. Eric SunshineDec 16, 2014
  22. Junio C HamanoDec 16, 2014
  23. 5/6 push.c: add an --atomic-push argumentStefan Beller, Dec 16, 2014
  24. Eric SunshineDec 16, 2014
  25. Junio C HamanoDec 16, 2014
  26. Junio C HamanoDec 16, 2014
  27. 6/6 t5543-atomic-push.sh: add basic tests for atomic pushesStefan Beller, Dec 16, 2014
  28. receive-pack: refuse all commands if one fails in atomic modeStefan Beller, Dec 16, 2014
  29. Junio C HamanoDec 16, 2014
  30. Eric SunshineDec 16, 2014
  31. Junio C HamanoDec 16, 2014
  32. Stefan BellerDec 16, 2014
  33. Junio C HamanoDec 16, 2014
  34. Stefan BellerDec 16, 2014
  35. Junio C HamanoDec 16, 2014
  36. Stefan BellerDec 16, 2014
  37. Junio C HamanoDec 16, 2014
  38. 0/6 atomic pushesStefan Beller, Dec 17, 2014
  39. 1/6 receive-pack.c: add protocol support to negotiate atomicStefan Beller, Dec 17, 2014
  40. Eric SunshineDec 19, 2014
  41. 2/6 send-pack: Rename ref_update_to_be_sent to check_to_send_updateStefan Beller, Dec 17, 2014
  42. Junio C HamanoDec 17, 2014
  43. 3/6 send-pack.c: add --atomic command line argumentStefan Beller, Dec 17, 2014
  44. Junio C HamanoDec 17, 2014
  45. Eric SunshineDec 19, 2014
  46. 4/6 receive-pack.c: use a single ref_transaction for atomic pushesStefan Beller, Dec 17, 2014
  47. Junio C HamanoDec 17, 2014
  48. Stefan BellerDec 17, 2014
  49. Junio C HamanoDec 18, 2014
  50. 4/6 receive-pack.c: use a single ref_transaction for atomic pushesStefan Beller, Dec 18, 2014
  51. Eric SunshineDec 18, 2014
  52. 4/6 receive-pack.c: use a single ref_transaction for atomic pushesStefan Beller, Dec 19, 2014
  53. Eric SunshineDec 19, 2014
  54. 5/6 push.c: add an --atomic argumentStefan Beller, Dec 17, 2014
  55. Eric SunshineDec 19, 2014
  56. 6/6 t5543-atomic-push.sh: add basic tests for atomic pushesStefan Beller, Dec 17, 2014

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