X-Git-Url: https://git.exim.org/buildfarm-client.git/blobdiff_plain/8a0e7f5c13b0abdccb8445939cebd5f55d8a1916..66c62beda0bfbb2fd194cbd3590e9fa51eb7220e:/run_branches

diff --git a/run_branches b/run_branches
index bf377fb..429b02e 100755
--- a/run_branches
+++ b/run_branches
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 =comment
 
@@ -78,31 +78,45 @@ $branch = 'global';
 require $buildconf;
 
 # Check if auto-update is wanted and possible
-if (not exists $EximBuild::Conf{auto_update} or $EximBuild::Conf{auto_update})
-{
-    my $remote = $EximBuild::Conf{auto_update} // 'origin';
+eval {
+    if (not exists $EximBuild::Conf{auto_update} or $EximBuild::Conf{auto_update})
+    {
+	my $remote = $EximBuild::Conf{auto_update} // 'origin';
+
+	die "auto-update not possible: need write permissions in @{[cwd]}\n"
+	    if not -w '.';
+
+	# Get information about our remote and calculate the chance for a
+	# successfull auto-updat. Based on:
+	# http://stackoverflow.com/questions/3258243/check-if-pull-needed-in-git
+	system("git fetch $remote") == 0 or die "'git fetch $remote' failed\n";
+	my ($upstream, $local, $base) = qx'git rev-parse ...@{upstream}' or die "'git rev-parse' failed\n";
 
-    die "$0: auto-update not possible: need write permissions in @{[cwd]}\n"
-	if not -w '.';
+	$base =~ s/^\^//;
 
-    # http://stackoverflow.com/questions/3258243/check-if-pull-needed-in-git
-    system("git fetch $remote") == 0 or die $? >> 8;
-    my ($upstream, $local, $base) = qx'git rev-parse ...@{upstream}';   die $? >> 8 if $?;
-    $base =~ s/^\^//;
+	if ($upstream ne $local) {
 
-    if ($upstream ne $local) {
-	die "$0: the merge base is not local anymore. Refusing to `git pull`\n"
-	    if $base ne $local;
+	    if ($base ne $local) {
+		die "the merge base is not local anymore. Refusing to `git pull`\n"
+	    }
 
-	say "Doing git pull ..." if $verbose;
+	    # if we're the merge base, the ff-only should work
+	    # except if there are local changes. We won't stop, if we
+	    # fail to update, but we'll issue a warning
+	    system("git pull --ff-only $remote") == 0 or die "git pull --ff-only\n";
 
-	# if we're the merge base, the ff-only should workkkkkk
-	system 'git pull --ff-only' == 0 or die $? >> 8;
-	say "$0: re-execute after update";
-	chdir $CALLED{cwd} or die "$0: Can't chdir to $CALLED{cwd}: $!\n";
-	exec $CALLED{argv0}, @{$CALLED{argv}};
-	die "Can't re-exec\n";
+	    say "re-execute after update";
+	    chdir $CALLED{cwd} or die "Can't chdir to $CALLED{cwd}: $!\n";
+	    exec $CALLED{argv0}, @{$CALLED{argv}};
+	    die "Can't re-exec\n";
+	}
     }
+};
+
+if ($@) {
+    chomp $@;
+    warn "Automatic updated failed with `$@'\n"
+	."Continue anyway\n";
 }
 
 unless (
@@ -145,15 +159,12 @@ elsif ($EximBuild::conf{branches_to_build} =~
 
 @branches = apply_throttle(@branches);
 
-my $global_lock_dir =
-    $EximBuild::conf{global_lock_dir}
-  ||$EximBuild::conf{build_root}
-  ||'';
+my $global_lock_dir = $EximBuild::conf{global_lock_dir}
+  // $EximBuild::conf{build_root}
+  // die "$0: need global_lock_dir\n";
 
-unless ($global_lock_dir && -d $global_lock_dir)
-{
-    die "no global lock directory: $global_lock_dir";
-}
+die "$0: need r/w permissions for directory '$global_lock_dir'\n"
+    if not -d -w $global_lock_dir;
 
 # acquire the lock