dump stats on HUP signal

diff --git a/syslog-count-link.pl b/syslog-count-link.pl
index de1266d..5dd3f4b 100755 (executable)
--- a/syslog-count-link.pl
+++ b/syslog-count-link.pl
@@ -6,11 +6,33 @@ use Data::Dump qw(dump);
 
 my $stat;
 
+sub print_stats {
+       foreach my $host ( sort keys %$stat ) {
+               foreach my $port ( sort {
+                       my $a1 = $a; $a1 =~ s/\D+//g;
+                       my $b1 = $b; $b1 =~ s/\D+//g;
+                       no warnings;
+                       $a1 <=> $b1;
+               } keys %{ $stat->{$host} } ) {
+                       next if $port =~ m/^_/;
+                       printf "%s %s:%s %d\n", $host, $port, $stat->{$host}->{$port}, $stat->{$host}->{_count}->{$port};
+               }
+       }
+}
+
+$SIG{HUP} = sub {
+       print_stats();
+};
+
+warn "kill -HUP $$  # to dump stats\n";
+
 my $host_re = '[\w-]+';
 my $port_re = '[\w/]+';
 
 while(<>) {
        chomp;
+       s/[\r\n]+//;
+       next if m/^$/;
 
        ## Dell
        if ( m/(\S+)\s%LINK-[IW]-(\w+):\s*(\w+)/ ) {
@@ -34,20 +56,16 @@ while(<>) {
                $stat->{$host}->{_count}->{$port} += $state =~ m/F/ ? 1 : -1;
 
 
+       } elsif ( m'==> /var/log/' ) {
+               # ignore tail output
        } else {
                warn "IGNORE: [$_]\n";
        }
 }
 
+
+
 warn "# stat = ", dump($stat);
+print_stats;
+
 
-foreach my $host ( sort keys %$stat ) {
-       foreach my $port ( sort {
-               my $a1 = $a; $a1 =~ s/\D+//g;
-               my $b1 = $b; $b1 =~ s/\D+//g;
-               $a1 <=> $b1;
-       } keys %{ $stat->{$host} } ) {
-               next if $port =~ m/^_/;
-               printf "%s %s:%s %d\n", $host, $port, $stat->{$host}->{$port}, $stat->{$host}->{_count}->{$port};
-       }
-}