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[PATCH v3 2/2] git-svn: allow git-svn fetching to work using serf

From
Kyle J. McKay <mackyle@gmail.com>
Date
Jul 7, 2013, 04:20 UTC
Message-ID
<1373170849-9150-3-git-send-email-mackyle@gmail.com>
In-Reply-To
<1373170849-9150-1-git-send-email-mackyle@gmail.com>
From: "Kyle J. McKay" <mackyle@gmail.com>

When attempting to git-svn fetch files from an svn https?: url using the serf library (the only choice starting with svn 1.8) the following errors can occur:

Temp file with moniker 'svn_delta' already in use at Git.pm line 1250 Temp file with moniker 'git_blob' already in use at Git.pm line 1250

David Rothenberger <daveroth@acm.org> has determined the cause to be that ra_serf does not drive the delta editor in a depth-first manner [...]. Instead, the calls come in this order:

1. open_root
2. open_directory
3. add_file
4. apply_textdelta
5. add_file
6. apply_textdelta

When using the ra_serf access method, git-svn can end up needing to create several temp files before the first one is closed.

This change causes a new temp file moniker to be generated if the one that would otherwise have been used is currently locked.

Signed-off-by: Kyle J. McKay <mackyle@gmail.com>
---
 perl/Git/SVN/Fetcher.pm | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/perl/Git/SVN/Fetcher.pm b/perl/Git/SVN/Fetcher.pm
index bd17418..10edb27 100644
--- a/perl/Git/SVN/Fetcher.pm
+++ b/perl/Git/SVN/Fetcher.pm
@@ -315,11 +315,13 @@ sub change_file_prop {
 sub apply_textdelta {
 	my ($self, $fb, $exp) = @_;
 	return undef if $self->is_path_ignored($fb->{path});
-	my $fh = $::_repository->temp_acquire('svn_delta');
+	my $suffix = 0;
+	++$suffix while $::_repository->temp_is_locked("svn_delta_${$}_$suffix");
+	my $fh = $::_repository->temp_acquire("svn_delta_${$}_$suffix");
 	# $fh gets auto-closed() by SVN::TxDelta::apply(),
 	# (but $base does not,) so dup() it for reading in close_file
 	open my $dup, '<&', $fh or croak $!;
-	my $base = $::_repository->temp_acquire('git_blob');
+	my $base = $::_repository->temp_acquire("git_blob_${$}_$suffix");
 
 	if ($fb->{blob}) {
 		my ($base_is_link, $size);
-- 
1.8.3
Previous: Jonathan NiederNext: Junio C Hamano
Message 6 of 7 in “allow git-svn fetching to work using serf”
  1. 0/2 allow git-svn fetching to work using serfKyle J. McKay, Jul 7, 2013
  2. 1/2 Git.pm: add new temp_is_locked functionKyle J. McKay, Jul 7, 2013
  3. David RothenbergerJul 18, 2013
  4. Kyle J. McKayJul 18, 2013
  5. Jonathan NiederJul 18, 2013
  6. 2/2 git-svn: allow git-svn fetching to work using serfKyle J. McKay, Jul 7, 2013
  7. Junio C HamanoJul 8, 2013

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