From bc735e2cc6484235f435b672ccfe308f3619101f Mon Sep 17 00:00:00 2001
From: Ian Dobson <unknown@munin-monitoring.org>
Date: Sat, 5 Jul 2008 11:13:51 +0200
Subject: [PATCH] Initial version

---
 plugins/other/mythtv_programs | 157 ++++++++++++++++++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100755 plugins/other/mythtv_programs

diff --git a/plugins/other/mythtv_programs b/plugins/other/mythtv_programs
new file mode 100755
index 00000000..b5eb1745
--- /dev/null
+++ b/plugins/other/mythtv_programs
@@ -0,0 +1,157 @@
+#!/usr/bin/perl -w
+#
+# Munin plugin for MythTV
+# This plugin can graph:- EPG programs per channels
+# 
+# NOTE: This plugin needs to run as root so add the following to your munin-node config file 
+#  [mythtv_status*]
+#  user=root
+#  The http/xml status page must be enabled in the mythtv backend.
+#
+# $Log$
+# Revision 0.1  2008/03/27  idobson
+# Code for all options except recorded implemented 
+#
+# Magic markers (optional - used by munin-config and installation scripts):
+#
+#%# family=auto
+#%# capabilities=autoconf
+use LWP::Simple;
+#use XML::Parser;
+use DBI;
+
+# Parameters for Backend xml feed
+my $backendHostname = "192.168.0.2";
+my $backendStatusPort = "6544";
+
+# SQL parameters are read from mysql.txt
+# There should be no need to change anything after this point
+my $SQLServer = "";
+my $SQLUser = "";
+my $SQLPassword = "";
+my $SQLDBName = "";
+
+my $result="";
+my $gata="";
+my $VideoInput=1;
+my $Channel="";
+
+#Auto config options
+ if ($ARGV[0] and $ARGV[0] eq "autoconf" ) {
+     print "yes\n";
+     exit 0;
+ } 
+
+#Setup SQL access
+ PrepSQLRead();
+ 
+#Config Options
+##Configuration for encoder, no config data needs to read from anywhere
+ if ($ARGV[0] and $ARGV[0] eq "config"){
+     print "graph_scale off\n";
+     print "graph_title MythTV EPG per channel\n";
+     print "graph_args --base 1000\n";
+     print "graph_category MythTV\n";
+     print "graph_vlabel EPG days\n";
+     @result=SQLQuery("SELECT  `chanid` , `name` FROM `channel` order by `chanid` ");
+     my $Ptr=0;
+     foreach $gata  (@result) {
+      if ($Ptr == 0) {
+       $Channel = $gata;
+       $Ptr=1;
+      } else {
+       print "Channel" . $Channel . "EPG.label EPG days for channel $gata\n";
+       $Ptr=0;
+      }
+     }   
+   exit 0;
+ }
+
+
+#Actually dump data to Munin
+   @result=SQLQuery("SELECT c.chanid, (UNIX_TIMESTAMP(MAX(c.starttime)) 
+                     - UNIX_TIMESTAMP(NOW()))/86400 AS calc 
+                     FROM program c, channel o 
+                     WHERE o.chanid = c.chanid GROUP BY o.chanid
+                     ORDER BY calc  ");
+     my $Ptr=0;
+     foreach $gata (@result) {
+      if ($Ptr == 0) {
+       $Channel = $gata;
+       $Ptr=1;
+      } else {
+       print "Channel" . $Channel . "EPG.value $gata\n";
+       $Ptr=0;
+      }
+   }
+
+exit 0;
+
+
+#Try and read MythTV configuration parameters from mysql.txt (This could be in several places)
+sub PrepSQLRead {
+    my $hostname = `hostname`;
+    chomp($hostname);
+    
+# Read the mysql.txt file in use by MythTV. Could be in a couple places, so try the usual suspects
+    my $found = 0;
+    my @mysql = ('/usr/local/share/mythtv/mysql.txt',
+                 '/usr/share/mythtv/mysql.txt',
+                 '/etc/mythtv/mysql.txt',
+                 '/usr/local/etc/mythtv/mysql.txt',
+                 "$ENV{HOME}/.mythtv/mysql.txt",
+                 'mysql.txt'
+                );
+    foreach my $file (@mysql) {
+        next unless (-e $file);
+        $found = 1;
+        open(CONF, $file) or die "Unable to open $file:  $!\n\n";
+        while (my $line = <CONF>) {
+        # Cleanup
+            next if ($line =~ /^\s*#/);
+            $line =~ s/^str //;
+            chomp($line);
+        # Split off the var=val pairs
+            my ($var, $val) = split(/\=/, $line, 2);
+            next unless ($var && $var =~ /\w/);
+            if ($var eq 'DBHostName') {
+                $SQLServer = $val;
+            }
+            elsif ($var eq 'DBUserName') {
+                $SQLUser = $val;
+            }
+            elsif ($var eq 'DBName') {
+                $SQLDBName = $val;
+            }
+            elsif ($var eq 'DBPassword') {
+                $SQLPassword = $val;
+            }
+        # Hostname override
+            elsif ($var eq 'LocalHostName') {
+                $hostname = $val;
+            }
+        }
+        close CONF;
+    }
+    die "Unable to locate mysql.txt:  $!\n\n" unless ($found && $SQLServer);
+    return 0;
+}
+
+#Perform  SQL query
+sub SQLQuery {
+   my  ($QUERY) = @_;
+   my @data;
+   my $dbh = DBI->connect("DBI:mysql:$SQLDBName:$SQLServer", $SQLUser, $SQLPassword) 
+         or die "Couldn't connect to database: " . DBI->errstr;
+   my $table_data = $dbh->prepare($QUERY) or die "Couldn't prepare statement: " . $dbh->errstr;
+   $table_data->execute or die "Couldn't execute statement: " . $table_data->errstr;
+
+   while ( $ref = $table_data->fetchrow_arrayref() )  {
+      push (@data,@{$ref})
+   }
+   if ($data[0]) {
+     return @data;
+   } else {
+     return 0;
+   }   
+}