module TungstenNagiosMonitor

Constants

NAGIOS_CRITICAL
NAGIOS_OK
NAGIOS_UNKNOWN
NAGIOS_WARNING

Public Instance Methods

add_perfdata(key, value) click to toggle source

Add a key=>value pair to the performance data

# File lib/continuent-tools-nagios-monitor.rb, line 74
def add_perfdata(key, value)
  @perfdata << "#{key}=#{value};"
end

build_critical_message(value) click to toggle source

Build an output string when the value is critical

# File lib/continuent-tools-nagios-monitor.rb, line 69
def build_critical_message(value)
  "Value is too high (#{value})"
end

build_ok_message(value) click to toggle source

Build an output string when the value has passed

# File lib/continuent-tools-nagios-monitor.rb, line 59
def build_ok_message(value)
  "Value is OK (#{value})"
end

build_warning_message(value) click to toggle source

Build an output string when the value is at a warning level

# File lib/continuent-tools-nagios-monitor.rb, line 64
def build_warning_message(value)
  "Value is too high (#{value})"
end

check_threshold(value) click to toggle source

Compare the value to the collected threshold values as floats

# File lib/continuent-tools-nagios-monitor.rb, line 15
def check_threshold(value)
  unless value.to_s() =~ /^[0-9\.]+$/
    unknown("Unable to compare a non-numeric value : #{value}")
  end
  
  check = value.to_s().to_f()
  if check >= opt(:critical_level).to_f()
    critical(build_critical_message(value))
  elsif check >= opt(:warning_level).to_f()
    warning(build_warning_message(value))
  else
    ok(build_ok_message(value))
  end
end

critical(msg) click to toggle source

Output a Nagios-formatted critical return message and return the critical code

# File lib/continuent-tools-nagios-monitor.rb, line 101
def critical(msg)
  opt(:nagios_status_sent, true)
  TU.output "CRITICAL: #{msg} | #{perfdata()}"
  cleanup(NAGIOS_CRITICAL)
end

is_critical?(value) click to toggle source

Is the given value above the critical threshold

# File lib/continuent-tools-nagios-monitor.rb, line 31
def is_critical?(value)
  unless value.to_s() =~ /^[0-9\.]+$/
    unknown("Unable to compare a non-numeric value : #{value}")
  end
  
  check = value.to_s().to_f()
  if check >= opt(:critical_level).to_f()
    true
  else
    false
  end
end

is_warning?(value) click to toggle source

Is the given value above the warning threshold

# File lib/continuent-tools-nagios-monitor.rb, line 45
def is_warning?(value)
  unless value.to_s() =~ /^[0-9\.]+$/
    unknown("Unable to compare a non-numeric value : #{value}")
  end
  
  check = value.to_s().to_f()
  if check >= opt(:warning_level).to_f()
    true
  else
    false
  end
end

ok(msg) click to toggle source

Output a Nagios-formatted success return message and return the OK code

# File lib/continuent-tools-nagios-monitor.rb, line 85
def ok(msg)
  opt(:nagios_status_sent, true)
  TU.output "OK: #{msg} | #{perfdata()}"
  cleanup(NAGIOS_OK)
end

perfdata() click to toggle source

Return a Nagios-formatted performance data string

# File lib/continuent-tools-nagios-monitor.rb, line 79
def perfdata
  @perfdata.join(" ")
end

unknown(msg) click to toggle source

Output a Nagios-formatted unknown return message and return the unknown code

# File lib/continuent-tools-nagios-monitor.rb, line 109
def unknown(msg)
  opt(:nagios_status_sent, true)
  TU.output "UNKNOWN: #{msg} | #{perfdata()}"
  cleanup(NAGIOS_UNKNOWN)
end

uses_thresholds?() click to toggle source

This script supports the warning (-w) and critical (-c) arguments. Override this function to return true if you would like to use those arguments.

# File lib/continuent-tools-nagios-monitor.rb, line 10
def uses_thresholds?
  false
end

warning(msg) click to toggle source

Output a Nagios-formatted warning return message and return the warning code

# File lib/continuent-tools-nagios-monitor.rb, line 93
def warning(msg)
  opt(:nagios_status_sent, true)
  TU.output "WARNING: #{msg} | #{perfdata()}"
  cleanup(NAGIOS_WARNING)
end

Private Instance Methods

cleanup(code = 0) click to toggle source

Calls superclass method

# File lib/continuent-tools-nagios-monitor.rb, line 138
def cleanup(code = 0)
  if opt(:nagios_status_sent) == false
    if code == 0
      TU.output "OK: No errors | #{perfdata()}"
      code = NAGIOS_OK
    else
      TU.output "UNKNOWN: Errors were encountered while running this script | #{perfdata()}"
      code = NAGIOS_UNKNOWN
    end
  end
  
  super(code)
end

configure() click to toggle source

Calls superclass method

# File lib/continuent-tools-nagios-monitor.rb, line 117
def configure
  super()
  
  opt(:nagios_status_sent, false)
  @perfdata = []
  
  if uses_thresholds?()
    add_option(:warning_level, {
      :on => "-w String",
      :help => "The warning level for this monitor",
      :required => true,
    })
  
    add_option(:critical_level, {
      :on => "-c String",
      :help => "The critical level for this monitor",
      :required => true,
    })
  end
end