91 lines
2.9 KiB
Perl
Executable file
91 lines
2.9 KiB
Perl
Executable file
#!/usr/bin/perl -w
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use strict;
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use warnings;
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# - show fake "reflog" from gitolite server
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# - recover deleted branches
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# - recover from bad force pushes
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# --------------------
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# WARNING
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# - heavily dependent on the gitolite log file format (duh!)
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# - cannot recover if some other commits were made after the force push
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# USAGE
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# ssh git@server gl-reflog show r1 refs/heads/b1
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# # shows last 10 updates to branch b1 in repo r1
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# ssh git@server gl-reflog show r1 refs/heads/b1 20
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# # shows last 20 entries...
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# ssh git@server gl-reflog recover r1 refs/heads/b1
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# # recovers the last update to b1 in r1 if it was a "+"
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# NOTES
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# - the verb "recover" is used because this is expected to be used most often
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# to recover deleted branches. Plus there's enough confusion in git land
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# caused by "reset" and "revert" I thought I should add my bit to it ;-)
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# - git's internal reflog is NOT recovered, even if you recover the branch.
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# I'm good but not *that* good ;-)
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# - since this program produces a log entry that satisfies it's own criteria,
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# it acts as a "toggle" for its own action for rewinds (but not for deletes)
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my($cmd, $repo, $ref, $limit) = @ARGV;
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$limit ||= 10;
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unshift @INC, $ENV{GL_BINDIR};
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require gitolite or die "parse gitolite.pm failed\n";
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my ($perm, $creator, $wild) = &repo_rights($repo);
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die "you don't have read access to $repo\n" unless $perm =~ /R/;
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my @logfiles = sort glob("$ENV{GL_ADMINDIR}/logs/*");
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# TODO figure out how to avoid reading *all* the log files when you really
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# only need the last few
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our @loglines;
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{
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my @f;
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local(@ARGV) = @logfiles;
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while (<>) {
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chomp;
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@f = split /\t/;
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# field 2 is the userid, 5 is W or +, 6/7 are old/new SHAs
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# 8 is reponame, 9 is refname (but all those are 1-based)
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next unless $f[3] =~ /^(git-receive-pack|gl-reflog recover) /;
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next unless $f[8];
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next unless $f[7] eq $repo;
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next unless $f[8] eq $ref;
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push @loglines, $_;
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}
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}
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if ( $cmd eq 'show' ) {
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my $start = @loglines - $limit;
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$start = 0 if $start < 0;
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map { print "$loglines[$_]\n" } $start .. $#loglines;
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exit 0;
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}
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if ( $cmd eq 'recover' ) {
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my @f = split /\t/, $loglines[$#loglines];
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die "the last push was not yours\n" unless $f[1] eq $ENV{GL_USER};
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die "the last push was not a rewind or delete\n" unless $f[4] eq '+';
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my($oldsha, $newsha) = @f[5,6];
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if ($newsha =~ /^0+$/) {
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print "recovering $repo $ref at $oldsha (was deleted)\n";
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} else {
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print "recovering $repo $ref at $oldsha (was forced to $newsha)\n";
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}
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chdir("$ENV{GL_REPO_BASE_ABS}/$repo.git");
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my $newsha2 = $newsha;
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$newsha2 = '' if $newsha =~ /^0+$/;
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system("git", "update-ref", $ref, $oldsha, $newsha2) and
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die "repo $repo, update-ref $ref $oldsha $newsha failed...\n";
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&log_it("", "+\t$newsha\t$oldsha\t$repo\t$ref");
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}
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