#!/usr/bin/env jruby

# Description: Voldemort plugin to pull basic stats on throughput and number of calls into Munin
# Author: Peter Crossley - Webtrends Inc

require 'rubygems'
require 'jmx4r'


#%# family=auto
#%# capabilities=autoconf

# friendly name => result of listPerfStatsKeys via JMX
keys = {
  "Throughput" => { "vlabel" => "rate",
                    "type" => "ABSOLUTE",
                    "values" => ["all_operation_throughput","delete_throughput", "get_all_throughput", "get_throughput", "put_throughput"]
                  },
  "Number of Calls" => { "vlabel" => "counts",
                    "type" => "COUNTER",
                    "values" => ["number_of_calls_to_delete","number_of_calls_to_get", "number_of_calls_to_get_all",
                                 "number_of_calls_to_put", "number_of_exceptions"]
                  }
}

if ARGV[0] == "config"
  keys.each_key do |key|
    puts "multigraph voldemort_#{key.gsub(" ", "_")}"
    puts "graph_title #{key}"
    puts "graph_scale no"
    puts "graph_category voldemort"
    puts "graph_vlabel #{keys[key]['vlabel']}"
    for data in keys[key]['values'] do
      puts "#{data}.type #{keys[key]['type']}"
      puts "#{data}.label #{data.gsub("_", " ")}"
    end
    puts
  end
  exit 0
elsif ARGV[0] == "autoconf"
  puts "yes"
  exit 0
else

  # Add JMX port
  # JAVA_OPTS="$JAVA_OPTS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=5400 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false"
  # Tell JBossAS to use the platform MBean server
  # JAVA_OPTS="$JAVA_OPTS -Djboss.platform.mbeanserver"
  # Make the platform MBean server able to work with JBossAS MBeans
  # JAVA_OPTS="$JAVA_OPTS -Djavax.management.builder.initial=org.jboss.system.server.jmx.MBeanServerBuilderImpl"
  # JBOSS_CLASSPATH="/opt/webtrends/jboss/bin/mbean"
  JMX::MBean.establish_connection :port => 5400
  vs = JMX::MBean.find_by_name "voldemort.store.stats.aggregate:type=aggregate-perf"

  keys.each_key do |key|
    puts "multigraph voldemort_#{key.gsub(" ", "_")}"
    for data in keys[key]['values'] do
      puts "#{data}.value #{begin vs.send("#{data}") rescue 0 end}"
    end
    puts
  end
end