From: Eric Wong <e@80x24.org>
Date: Wed, 16 Apr 2014 19:45:51 +0000 (+0000)
Subject: ssoma: add --cron option to sync
X-Git-Tag: v0.0.0~10
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=ed2adfe7d6ec00a356ef1ba8a0e799c433b4ad68;p=ssoma-mda.git

ssoma: add --cron option to sync

Encourages users to add "ssoma sync --cron" to their crontabs
and reduce load spikes.
---

diff --git a/ssoma b/ssoma
index 1f68f6b..b6332fd 100755
--- a/ssoma
+++ b/ssoma
@@ -12,6 +12,7 @@ use File::Path qw/make_path/;
 use File::Temp qw/tempfile/;
 use File::Spec qw//;
 use Email::LocalDelivery;
+use constant CRON_RAND_DELAY => 60; # adjust as necessary
 Getopt::Long::Configure("require_order", "pass_through");
 our %opts;
 GetOptions(
@@ -34,6 +35,7 @@ our %cmd = (
 	"sync" => {
 		doc => "sync target(s) for existing LISTNAME",
 		arg => "[LISTNAME] [TARGET]",
+		opt => { "cron" => \$opts{cron} }
 	},
 	"cat" => {
 		doc => "show a message by Message-ID",
@@ -50,6 +52,9 @@ my $cmd_sub = eval {
 	no strict 'refs';
 	*{"cmd_$cmd"};
 } or die "BUG: $cmd not implemented\n";
+if (my $opt = $cmd{$cmd}->{opt}) {
+	GetOptions(%$opt) or usage(1);
+}
 
 $cmd_sub->(@ARGV);
 exit 0;
@@ -57,7 +62,7 @@ exit 0;
 sub usage {
 	my ($cmd, $exit) = @_;
 	my $fd = $exit ? \*STDERR : \*STDOUT;
-	print $fd "Usage: ssoma <command> [options] [arguments]\n";
+	print $fd "Usage: ssoma [opts] <command> [command-opts] [args]\n";
 
 	print $fd "Available commands:\n" unless $cmd;
 
@@ -77,7 +82,7 @@ sub usage {
 			# prints out arguments as they should be passed:
 			my $x = s#[:=]s$## ? '<arg>' :
 			        (s#[:=]i$## ? '<num>' : '');
-			print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
+			print $fd ' ' x 14, join(', ', map { length $_ > 1 ?
 							"--$_" : "-$_" }
 						split /\|/, $_)," $x\n";
 		}
@@ -184,6 +189,9 @@ sub foreach_list {
 
 sub cmd_sync {
 	my ($listname, @targets) = @_;
+	if ($opts{cron}) {
+		sleep(rand(CRON_RAND_DELAY));
+	}
 	if (defined $listname) {
 		check_listname($listname);
 		do_sync("$ENV{SSOMA_HOME}/$listname.git", \@targets);