From 1ab8c23aeee8e0e2655406648f430a08eb83deba Mon Sep 17 00:00:00 2001
From: Dobrica Pavlinusic <dpavlin@rot13.org>
Date: Sun, 11 Dec 2016 15:17:06 +0100
Subject: [PATCH] parse ifstat output and feed it into influxdb

---
 ifstat.pl | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 77 insertions(+), 6 deletions(-)

diff --git a/ifstat.pl b/ifstat.pl
index 4b213f9..496a7fd 100755
--- a/ifstat.pl
+++ b/ifstat.pl
@@ -2,19 +2,90 @@
 use warnings;
 use strict;
 use autodie;
-use Data::Dump;
-sub XXX { warn "### ",Data::Dump::dump(@_) };
 
-open(my $ifstat, '-|',
-qq{ifstat -s 'infosl_com_koo7Kaph@#10.20.0.2' -t -b -a -n -A 1 1});
+my $host = shift @ARGV || die "usage: INFLUX=http://127.0.0.1:8086/write?db=snmp COMMUNITY=snmp-comminity $0 host";
+my $community = $ENV{COMMUNITY} || 'public';
+my $influx    = $ENV{INFLUX} || 'http://127.0.0.1:8086/write?db=snmp';
+
+use Data::Dump qw(dump);
+sub XXX { warn "XXX ",scalar @_, Data::Dump::dump(@_) };
+
+my ($sec,$min,$hour,$dd,$mm,$yyyy) = localtime(time); $mm++;
+my $time;
+use Time::Local;
+sub update_time {
+	warn "# time $yyyy-$mm-$dd $hour:$min:$sec $time\n";
+	$time = timelocal($sec,$min,$hour,$dd,$mm-1,$yyyy) * 1000_000_000;
+	return $time;
+}
+
+# FIXME add -A to pull interfaces if they go up and down
+# -l loopback
+# -a all
+my $cmd = qq{ifstat -s '$community@#$host' -b -n -t 1};
+warn "# $cmd\n";
+open(my $ifstat, '-|', $cmd);
+
+my $first_skipped = 0;
+
+my $curl;
+sub reopen_curl {
+	if ( $ENV{INFLUX} ) {
+		open($curl, '|-', qq( curl -i -XPOST $influx --data-binary \@- ));
+	} else {
+		open($curl, '|-', 'cat');
+	}
+}
+
+my $stat;
+
+my @if;
+my @direction;
+
+my $lines;
 
 while(<$ifstat>) {
 	chomp;
-	warn "# [$_]\n";
+	#warn "# [$_]\n";
 	s/^\s+//;
+	s/(\w) (in|out)/$1_$2/g;
 	my @v = split(/\s+/);
-	XXX(@v);
+	if ( $v[0] eq 'Time' ) {
+		shift @v;
+		@if = @v;
+	} elsif ( $v[0] eq 'HH:MM:SS' ) {
+		shift @v;
+		@direction = map { s/\W+/_/g; s/^K//; $_ } @v;
+	} elsif ( $v[0] =~ m/^(\d\d):(\d\d):(\d\d)/ ) {
+		next unless $first_skipped++;
+XXX $stat;
+		$hour = $1; $min = $2; $sec = $3; update_time;
+
+		reopen_curl;
+		my $total;
+
+		foreach my $i ( 0 .. $#if ) {
+
+			my $port = $if[$i];
+			my $vlan = '';
+			my $is_port = 'T';
+			$vlan = ",vlan=$1" if $port =~ m/if(\d\d\d\d\d\d)/;
+
+			print $curl "ifstat,host=$host,port=$port$vlan ",
+				$direction[$i*2],   "=", $v[$i*2+1]   * 1024, ",",
+				$direction[$i*2+1], "=", $v[$i*2+2] * 1024,
+				" $time\n";
+
+			$total += $v[$i*2+1];
+
+			$lines++;
+		}
 
+		warn "# $host ", $curl->tell, " total=$total\n";
+		close($curl);
+	} else {
+		die "UNPARSED [$_]";
+	}
 }
 
 
-- 
2.20.1