pull printer status using SNMP::Multi

diff --git a/scripts/snmp-printer.pl b/scripts/snmp-printer.pl
new file mode 100755 (executable)
index 0000000..42aca17
--- /dev/null
+++ b/scripts/snmp-printer.pl
@@ -0,0 +1,143 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+
+# pull info from SNMP enabled printers and dump JSON
+
+use SNMP::Multi;
+use Data::Dump qw(dump);
+
+my $dir = 'public/json/monitor/printers';
+
+use JSON;
+sub save_json {
+       my ( $ip, $json ) = @_;
+       my $path = "$dir/$ip";
+       open(my $fh, '>', $path) || die "$path: $!";
+       print $fh encode_json $json;
+       close($fh);
+       warn "# $path ", -s $path, " bytes\n";
+}
+
+my $debug = $ENV{DEBUG} || 0; 
+
+my $community = 'public';
+my @printers = qw(
+10.60.0.20
+
+10.60.3.15
+10.60.3.17
+
+10.60.3.19
+10.60.3.21
+
+10.60.3.23
+10.60.3.25
+
+10.60.3.27
+10.60.3.29
+
+10.60.3.31
+10.60.3.33
+
+10.60.3.35
+10.60.3.37
+);
+
+@printers = @ARGV if @ARGV;
+
+# remove final .1 since we are using bulkwalk to get values!
+my %vars = qw[
+info                           iso.3.6.1.2.1.1.1.0
+hostname                       iso.3.6.1.2.1.43.5.1.1.16.1
+serial                         iso.3.6.1.2.1.43.5.1.1.17.1
+pages                          iso.3.6.1.2.1.43.10.2.1.4.1
+@message                       iso.3.6.1.2.1.43.18.1.1.8
+@consumable_name       iso.3.6.1.2.1.43.11.1.1.6.1
+@consumable_max                iso.3.6.1.2.1.43.11.1.1.8.1
+@consumable_curr       iso.3.6.1.2.1.43.11.1.1.9.1
+@tray_max                      iso.3.6.1.2.1.43.8.2.1.9.1
+@tray_capacity         iso.3.6.1.2.1.43.8.2.1.10.1
+@tray_name                     iso.3.6.1.2.1.43.8.2.1.13.1
+@tray_dim_x                    iso.3.6.1.2.1.43.8.2.1.4.1
+@tray_dim_y                    iso.3.6.1.2.1.43.8.2.1.5.1
+];
+
+my $oid2name;
+my @vars;
+while ( my ($name,$oid) = each %vars ) {
+       $oid =~ s/\.[0-1]$// if $name !~ /^\@/;
+       push @vars, [ $oid ];
+       $oid2name->{$oid} = $name;
+}
+my @oids = sort { length $a <=> length $b } keys %$oid2name;
+warn "# vars = ",dump(@vars) if $debug;
+
+my $sm = SNMP::Multi->new(
+       Method    => 'bulkwalk',
+       Community => $community,
+       Requests  => SNMP::Multi::VarReq->new(
+               hosts => [ @printers ],
+               vars  => [ @vars ],
+    ),
+       Timeout     => 1,
+       Retries     => 0,
+) or die $SNMP::Multi::error;
+
+warn "# working on: ", join(' ', @printers),$/;
+
+my $resp = $sm->execute() or die $sm->error();
+
+my $collected;
+
+foreach my $host ( $resp->hosts ) {
+       my $status;
+
+       foreach my $result ( $host->results ) {
+               if ( $result->error ) {
+                       warn "ERROR: $host ", $result->error;
+                       next;
+               }
+
+               warn "## result = ", dump($result) if $debug;
+
+               foreach my $v ( $result->varlists ) {
+                       foreach my $i ( @$v ) {
+                               my ( $oid, undef, $val, $fmt ) = @$i;
+                               if ( my $name = $oid2name->{$oid} ) {
+                                       $status->{$name} = $val;
+                               } else {
+                                       my $oid_base;
+                                       foreach ( @oids ) {
+                                               my $oid_part = substr($oid,0,length($_));
+                                               if ( $oid_part eq $_ ) {
+                                                       $oid_base = $oid_part;
+                                                       last;
+                                               }
+                                       }
+
+                                       my $name = $oid2name->{$oid_base} || die "no name for $oid in ",dump( $oid2name );
+                                       if ( $name =~ s/^\@// ) {
+                                               push @{ $status->{$name} }, $val;
+                                       } else {
+                                               $status->{$name} = $val;
+                                       }
+                               }
+                       }
+               }
+
+       }
+
+       foreach my $group ( grep { /\w+_\w+/ } keys %$status ) {
+               my ( $prefix,$name ) = split(/_/,$group,2);
+               foreach my $i ( 0 .. $#{ $status->{$group} } ) {
+                       $status->{$prefix}->[$i]->{$name} = $status->{$group}->[$i];
+               }
+               delete $status->{$group};
+       }
+
+       print "$host = ",dump($status);
+       save_json $host => $status;
+       $collected->{$host} = $status;
+}
+