Class: CollectdGearman::Application

Inherits:
Object
  • Object
show all
Defined in:
lib/collectd_gearman/application.rb

Constant Summary collapse

CONF_FILE = 
"/etc/collectd/nagios.yaml"
SEND_GEARMAN_BIN = 
"/usr/bin/send_gearman"

Class Method Summary collapse

Class Method Details

.check_params ⇒ Object 



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# File 'lib/collectd_gearman/application.rb', line 63

def self.check_params
  raise "Gearman server must be defined" unless options.gearman_server
  raise "Gearman key must be defined" unless options.gearman_key
end

.handle_options ⇒ Object 



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# File 'lib/collectd_gearman/application.rb', line 24

def self.handle_options
  parse_args
  read_conf
  set_defaults
  check_params
end

.options ⇒ Object 



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# File 'lib/collectd_gearman/application.rb', line 20

def self.options
  @options ||= OpenStruct.new
end

.parse_args ⇒ Object 



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# File 'lib/collectd_gearman/application.rb', line 31

def self.parse_args
  options.config_file = CONF_FILE

  OptionParser.new do |opts|
    opts.banner = "Usage: collectd_gearman [options]"

    opts.on('-f', '--config FILE', 'Config file') { |v| options.config_file = v }
    opts.on('-s', '--server SERVER', 'Gearman server') { |v| options.gearman_server = v }
    opts.on('-k', '--key KEY', 'Gearman key') { |v| options.gearman_key = v }
    opts.on('-g', '--send_gearman BIN', 'send_gearman binary') { |v| options.send_gearman = v }
    opts.on('-v', '--verbose', 'verbose') { |v| options.verbose = v }

    opts.on_tail("-h", "--help", "-H", "Display this help message.") do
      puts opts
      exit
    end

  end.parse!
end

.read_conf ⇒ Object 



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# File 'lib/collectd_gearman/application.rb', line 51

def self.read_conf
  return unless File.exist?(options.config_file)
  file_config = YAML.load_file(options.config_file)
  file_config.each do |k,v|
    options.send("#{k}=",v) unless options.send(k)
  end
end

.read_stdin ⇒ Object

Read threshold data from Collectd



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# File 'lib/collectd_gearman/application.rb', line 69

def self.read_stdin
  data = {}
  ARGF.each do |line|
    if line =~ /^[a-zA-Z]+: .*/
      data.merge!({line.split(": ").first => line.split(": ").last.strip})
    else
      data.merge!(message: line.strip)
    end
  end

  # DataSource = value is the same as nothing
  data.delete("DataSource") if data["DataSource"] == "value"
  data
end

.run ⇒ Object 



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# File 'lib/collectd_gearman/application.rb', line 12

def self.run
  standard_exception_handling do
    handle_options
    data = read_stdin
    send_commands data
  end
end

.send_commands(data) ⇒ Object

Send passive checks to all posible services



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# File 'lib/collectd_gearman/application.rb', line 85

def self.send_commands(data)
  # Plugin-Instance.Type-Instance.DataSource
  # Plugin-Instance.Type-Instance
  # Plugin-Instance.Type.DataSource
  # Plugin-Instance.Type
  # Plugin.Type-Instance.DataSource
  # Plugin.Type-Instance
  # Plugin.Type.DataSource
  # Plugin.Type
  
  if data["PluginInstance"] and data["TypeInstance"] and data["DataSource"]
    send_gearman data["Host"],data[:message],data["Severity"],"#{data["Plugin"]}-#{data["PluginInstance"]}.#{data["Type"]}-#{data["TypeInstance"]}.#{data["DataSource"]}"
  end
  
  if data["PluginInstance"] and data["TypeInstance"]
    send_gearman data["Host"],data[:message],data["Severity"],"#{data["Plugin"]}-#{data["PluginInstance"]}.#{data["Type"]}-#{data["TypeInstance"]}"
  end
  
  if data["PluginInstance"] and data["DataSource"]
    send_gearman data["Host"],data[:message],data["Severity"],"#{data["Plugin"]}-#{data["PluginInstance"]}.#{data["Type"]}.#{data["DataSource"]}"
  end
  
  if data["PluginInstance"]
    send_gearman data["Host"],data[:message],data["Severity"],"#{data["Plugin"]}-#{data["PluginInstance"]}.#{data["Type"]}"
  end
  
  if data["TypeInstance"] and data["DataSource"]
    send_gearman data["Host"],data[:message],data["Severity"],"#{data["Plugin"]}.#{data["Type"]}-#{data["TypeInstance"]}.#{data["DataSource"]}"
  end
  
  if data["TypeInstance"]
    send_gearman data["Host"],data[:message],data["Severity"],"#{data["Plugin"]}.#{data["Type"]}-#{data["TypeInstance"]}"
  end
  
  send_gearman data["Host"],data[:message],data["Severity"],"#{data["Plugin"]}.#{data["Type"]}"
end

.send_gearman(host, message, severity, service) ⇒ Object 



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# File 'lib/collectd_gearman/application.rb', line 122

def self.send_gearman(host,message,severity,service)
  case severity
  when "FAILURE"
    return_code = 2
  when "WARNING"
    return_code = 1
  when "OKAY"
    return_code = 0
  else
    return_code = 3
  end

  cmd = "#{options.send_gearman} --server=\"#{options.gearman_server}\" --encryption=yes --key=\"#{options.gearman_key}\" --host=\"#{host}\" --service=\"#{service}\" --message=\"#{message.gsub('"',"'")}\" -r=#{return_code}"

  raise "Command not found: #{options.send_gearman}" unless File.exist?(options.send_gearman)
  
  puts cmd if options.verbose

  system cmd
end

.set_defaults ⇒ Object 



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# File 'lib/collectd_gearman/application.rb', line 59

def self.set_defaults
  options.send_gearman ||= SEND_GEARMAN_BIN
end

.standard_exception_handling ⇒ Object 



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# File 'lib/collectd_gearman/application.rb', line 143

def self.standard_exception_handling
  yield
rescue SystemExit
  # Exit silently with current status
  raise
rescue Exception => ex
  $stderr.puts ex.message
  exit(false)
end