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marsadm: dynamic programming on template instantiation

This commit is contained in:
Thomas Schoebel-Theuer 2020-11-13 21:34:52 +01:00
parent 8846b48f74
commit 1aec029792
1 changed files with 14 additions and 1 deletions
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15
userspace/marsadm
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@ -1192,10 +1192,19 @@ sub _instantiate_systemd_unit {
return (1, $outfile, $replac);
}
my %generated_units;
sub make_systemd_unit {
my ($cmd, $res, $target) = @_;
# dynamic programming
$res = "" unless defined($res);
my $gen_key = "$cmd.$res.$target";
if (defined($generated_units{$gen_key})) {
lprint "systemd unit '$gen_key' already generated\n" if $verbose;
return $generated_units{$gen_key};
}
my @res_list;
if (defined($res)) {
if ($res) {
@res_list = ($res);
} else {
@res_list = get_member_resources($host);
@ -1229,16 +1238,19 @@ sub make_systemd_unit {
get_systemd_files() unless %systemd_files;
if (defined($systemd_files{$subst})) {
lprint "systemd unit '$subst' is already present at '$systemd_files{$subst}'\n" if $verbose;
$generated_units{$gen_key} = 0;
return 0;
}
}
}
}
lwarn "cannot find any systemd template for target unit '$target'\n";
$generated_units{$gen_key} = 0;
return 0;
}
lprint "==== instantiating template '$found_template_file'\n" if $verbose;
my ($nr, $file, $name) = _instantiate_systemd_unit($found_env, $found_template_file, $found_subst);
$generated_units{$gen_key} = $nr;
return $nr;
}
@ -1493,6 +1505,7 @@ sub __systemd_commit {
}
}
# Commit
%generated_units = ();
system("rm -rf \"$systemd_target_dir.old\"");
system("rm -rf \"$systemd_target_dir.new\"");
my $status = system("mv \"$systemd_target_dir\" \"$systemd_target_dir.old\"");