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authorEric Wong <e@80x24.org>2019-11-24 00:22:37 +0000
committerEric Wong <e@80x24.org>2019-11-24 21:47:22 +0000
commit28caef46cadc34c53e33994597de28f8e05552c0 (patch)
treef196f64cafa2f24dbe0546207c5b8eca58a6de31 /xt/git-http-backend.t
parent71bcf84313d2cd1b4948b62ec5c2ff6063096d3c (diff)
downloadpublic-inbox-28caef46cadc34c53e33994597de28f8e05552c0.tar.gz
xt/ is typically reserved for "eXtended tests" intended for
the maintainers and not ordinary users.  Since these require
special configuration and do nothing by waste cycles
during startup, they qualify.
Diffstat (limited to 'xt/git-http-backend.t')
-rw-r--r--xt/git-http-backend.t116
1 files changed, 116 insertions, 0 deletions
diff --git a/xt/git-http-backend.t b/xt/git-http-backend.t
new file mode 100644
index 00000000..a927d89e
--- /dev/null
+++ b/xt/git-http-backend.t
@@ -0,0 +1,116 @@
+# Copyright (C) 2016-2019 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+#
+# Ensure buffering behavior in -httpd doesn't cause runaway memory use
+# or data corruption
+use strict;
+use warnings;
+use Test::More;
+use POSIX qw(setsid);
+require './t/common.perl';
+
+my $git_dir = $ENV{GIANT_GIT_DIR};
+plan 'skip_all' => 'GIANT_GIT_DIR not defined' unless $git_dir;
+foreach my $mod (qw(BSD::Resource
+                        Plack::Util Plack::Builder
+                        HTTP::Date HTTP::Status Net::HTTP)) {
+        eval "require $mod";
+        plan skip_all => "$mod missing for git-http-backend.t" if $@;
+}
+my $psgi = "./t/git-http-backend.psgi";
+my ($tmpdir, $for_destroy) = tmpdir();
+my $err = "$tmpdir/stderr.log";
+my $out = "$tmpdir/stdout.log";
+my $sock = tcp_server();
+my $host = $sock->sockhost;
+my $port = $sock->sockport;
+my $td;
+
+my $get_maxrss = sub {
+        my $http = Net::HTTP->new(Host => "$host:$port");
+        ok($http, 'Net::HTTP object created for maxrss');
+        $http->write_request(GET => '/');
+        my ($code, $mess, %h) = $http->read_response_headers;
+        is($code, 200, 'success reading maxrss');
+        my $n = $http->read_entity_body(my $buf, 256);
+        ok(defined $n, 'read response body');
+        like($buf, qr/\A\d+\n\z/, 'got memory response');
+        ok(int($buf) > 0, 'got non-zero memory response');
+        int($buf);
+};
+
+{
+        ok($sock, 'sock created');
+        my $cmd = [ '-httpd', '-W0', "--stdout=$out", "--stderr=$err", $psgi ];
+        $td = start_script($cmd, undef, { 3 => $sock });
+}
+my $mem_a = $get_maxrss->();
+
+SKIP: {
+        my $max = 0;
+        my $pack;
+        my $glob = "$git_dir/objects/pack/pack-*.pack";
+        foreach my $f (glob($glob)) {
+                my $n = -s $f;
+                if ($n > $max) {
+                        $max = $n;
+                        $pack = $f;
+                }
+        }
+        skip "no packs found in $git_dir" unless defined $pack;
+        if ($pack !~ m!(/objects/pack/pack-[a-f0-9]{40}.pack)\z!) {
+                skip "bad pack name: $pack";
+        }
+        my $url = $1;
+        my $http = Net::HTTP->new(Host => "$host:$port");
+        ok($http, 'Net::HTTP object created');
+        $http->write_request(GET => $url);
+        my ($code, $mess, %h) = $http->read_response_headers;
+        is(200, $code, 'got 200 success for pack');
+        is($max, $h{'Content-Length'}, 'got expected Content-Length for pack');
+
+        # no $http->read_entity_body, here, since we want to force buffering
+        foreach my $i (1..3) {
+                sleep 1;
+                my $diff = $get_maxrss->() - $mem_a;
+                note "${diff}K memory increase after $i seconds";
+                ok($diff < 1024, 'no bloating caused by slow dumb client');
+        }
+}
+
+{
+        my $c = fork;
+        if ($c == 0) {
+                setsid();
+                exec qw(git clone -q --mirror), "http://$host:$port/",
+                        "$tmpdir/mirror.git";
+                die "Failed start git clone: $!\n";
+        }
+        select(undef, undef, undef, 0.1);
+        foreach my $i (1..10) {
+                is(1, kill('STOP', -$c), 'signaled clone STOP');
+                sleep 1;
+                ok(kill('CONT', -$c), 'continued clone');
+                my $diff = $get_maxrss->() - $mem_a;
+                note "${diff}K memory increase after $i seconds";
+                ok($diff < 2048, 'no bloating caused by slow smart client');
+        }
+        ok(kill('CONT', -$c), 'continued clone');
+        is($c, waitpid($c, 0), 'reaped wayward slow clone');
+        is($?, 0, 'clone did not error out');
+        note 'clone done, fsck-ing clone result...';
+        is(0, system("git", "--git-dir=$tmpdir/mirror.git",
+                        qw(fsck --no-progress)),
+                'fsck did not report corruption');
+
+        my $diff = $get_maxrss->() - $mem_a;
+        note "${diff}K memory increase after smart clone";
+        ok($diff < 2048, 'no bloating caused by slow smart client');
+}
+
+{
+        ok($td->kill, 'killed httpd');
+        $td->join;
+}
+
+done_testing();