X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/e7d54e3f9156fb856d39131ad8e41f619a536204..e40c8a6a039fcfb60fc4ff8bc03838c1f1d96efa:/doc/todo/headless_git_branches.mdwn?ds=sidebyside
diff --git a/doc/todo/headless_git_branches.mdwn b/doc/todo/headless_git_branches.mdwn
index e97b59900..bedf21d0c 100644
--- a/doc/todo/headless_git_branches.mdwn
+++ b/doc/todo/headless_git_branches.mdwn
@@ -6,49 +6,100 @@ Ikiwiki should really survive being asked to work with a git branch that has no
git clone barerepo.git srcdir
ikiwiki --rcs=git srcdir destdir
-I've fixed this initial construction case, and, based on my testing, I've also fixed the post-update executing on a new master, and ikiwiki.cgi executing on a non-existent master cases. Unfortunately these cases still generate a lot of warnings from recentchanges; I suspect a much more invasive patch would be needed to shut those up.
+I've fixed this initial construction case, and, based on my testing, I've
+also fixed the post-update executing on a new master, and ikiwiki.cgi
+executing on a non-existent master cases.
Please commit so my users stop whining at me about having clean branches to push to, the big babies.
-Summary: Change three scary loud failure cases related to empty branches into three scary loud success cases.
+Summary: Change three scary loud failure cases related to empty branches into three mostly quiet success cases.
[[!tag patch]]
+> FWIW, [[The_TOVA_Company]] apparently wants this feature (and I hope
+> I don't mind that I mention they were willing to pay someone for it,
+> but I told them I'd not done any of the work. :) )
+>
+> Code review follows, per hunk.. --[[Joey]]
+
diff --git a/IkiWiki/Plugin/git.pm b/IkiWiki/Plugin/git.pm
-index cf7fbe9..5b1e334 100644
+index cf7fbe9..e5bafcf 100644
--- a/IkiWiki/Plugin/git.pm
+++ b/IkiWiki/Plugin/git.pm
-@@ -439,10 +439,13 @@ sub git_commit_info ($;$) {
+@@ -439,17 +439,21 @@ sub git_commit_info ($;$) {
my @opts;
push @opts, "--max-count=$num" if defined $num;
-+ my @raw_lines;
-
+-
- my @raw_lines = run_or_die('git', 'log', @opts,
- '--pretty=raw', '--raw', '--abbrev=40', '--always', '-c',
- '-r', $sha1, '--', '.');
-+ if (-e $config{srcdir} . "/.git/refs/heads/" . $config{gitmaster_branch}) {
-+ @raw_lines = run_or_die('git', 'log', @opts,
-+ '--pretty=raw', '--raw', '--abbrev=40', '--always', '-c',
-+ '-r', $sha1, '--', '.');
-+ };
-
+-
++ my @raw_lines;
my @ci;
- while (my $parsed = parse_diff_tree(\@raw_lines)) {
-@@ -474,7 +477,10 @@ sub rcs_update () {
+- while (my $parsed = parse_diff_tree(\@raw_lines)) {
+- push @ci, $parsed;
+- }
++
++ # Test to see if branch actually exists yet.
++ if (run_or_non('git', 'show-ref', '--quiet', '--verify', '--', 'refs/heads/' . $config{gitmaster_branch}) ) {
++ @raw_lines = run_or_die('git', 'log', @opts,
++ '--pretty=raw', '--raw', '--abbrev=40', '--always', '-c',
++ '-r', $sha1, '--', '.');
++
++ while (my $parsed = parse_diff_tree(\@raw_lines)) {
++ push @ci, $parsed;
++ }
+
+- warn "Cannot parse commit info for '$sha1' commit" if !@ci;
++ warn "Cannot parse commit info for '$sha1' commit" if !@ci;
++ };
+
+ return wantarray ? @ci : $ci[0];
+ }
+
+
+My concern is that this adds a bit of slowdown (git show-ref is fast, but
+It's still extra work) to a very hot code path that is run to eg,
+update recentchanges after every change.
+
+Seems not ideal to do extra work every time to handle a case
+that will literally happen a maximum of once in the entire lifecycle of a
+wiki (and zero times more typically, since the setup automator puts in a
+.gitignore file that works around this problem).
+
+So as to not just say "no" ... what if it always tried to run git log,
+and if it failed (or returned no parsed lines), then it could look
+at git show-ref to deduce whether to throw an error or not.
+--[[Joey]]
+
+> Ah, but then git-log would still complain "bad revision 'HEAD'"
+> --[[Joey]]
+
+
+@@ -474,7 +478,10 @@ sub rcs_update () {
# Update working directory.
if (length $config{gitorigin_branch}) {
- run_or_cry('git', 'pull', '--prune', $config{gitorigin_branch});
-+ run_or_cry('git', 'fetch', '--prune', $config{gitorigin_branch});
-+ if (-e $config{srcdir} . '/.git/refs/remotes/' . $config{gitorigin_branch} . '/' . $config{gitmaster_branch}) {
-+ run_or_cry('git', 'merge', $config{gitorigin_branch} . '/' . $config{gitmaster_branch});
-+ }
++ run_or_cry('git', 'fetch', '--prune', $config{gitorigin_branch});
++ if (run_or_non('git', 'show-ref', '--quiet', '--verify', '--', 'refs/remotes/' . $config{gitorigin_branch} . '/' . $config{gitmaster_branch}) ) {
++ run_or_cry('git', 'merge', $config{gitorigin_branch} . '/' . $config{gitmaster_branch});
++ }
}
}
-
-@@ -559,7 +565,7 @@ sub rcs_commit_helper (@) {
+
+
+
+Same concern here about extra work. Code path is nearly as hot, being
+called on every refresh. Probably could be dealt with similarly as above.
+
+Also, is there any point in breaking the pull up into a
+fetch followed by a merge? --[[Joey]]
+
+
+@@ -559,7 +566,7 @@ sub rcs_commit_helper (@) {
# So we should ignore its exit status (hence run_or_non).
if (run_or_non('git', 'commit', '-m', $params{message}, '-q', @opts)) {
if (length $config{gitorigin_branch}) {
@@ -56,4 +107,7 @@ index cf7fbe9..5b1e334 100644
+ run_or_cry('git', 'push', $config{gitorigin_branch}, $config{gitmaster_branch});
}
}
+
+
+This seems fine to apply. --[[Joey]]