Class: NagiosHerald::Formatter::CheckGraphiteGraph

Inherits:
NagiosHerald::Formatter show all
Includes:
Logging
Defined in:
lib/nagios-herald/formatters/check_graphite_graph.rb

Instance Attribute Summary

Attributes inherited from NagiosHerald::Formatter

#content, #sandbox, #state_type

Instance Method Summary collapse

Methods included from Logging

#configure_logger_for, #logger, #logger_for

Methods inherited from NagiosHerald::Formatter

#ack_info, #action_url, #add_attachment, #add_html, #add_short_text, #add_text, #additional_details, #alert_ack_url, #clean_sandbox, #delete_html, #delete_section_for_type, #delete_short_text, #delete_text, #end_section, formatters, #generate_ack_content, #generate_content, #generate_message_content, #generate_problem_content, #generate_recovery_content, #generate_section, #generate_subject, #get_sandbox_path, #host_info, inherited, #initialize, #line_break, #notes, #notification_info, #recipients_email_link, #short_ack_info, #short_state_detail, #start_section, #state_info

Methods included from Util

#get_nagios_var, get_script_path, load_helper, underscore_to_camel_case, #unescape_text

Constructor Details

This class inherits a constructor from NagiosHerald::Formatter

Instance Method Details

#additional_info ⇒ Object

Public: Overrides Formatter::Base#additional_info. Returns nothing. Updates the formatter content hash.



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# File 'lib/nagios-herald/formatters/check_graphite_graph.rb', line 30

def additional_info
  section = __method__
  output = get_nagios_var("NAGIOS_#{@state_type}OUTPUT")
  # Output is formmated like: Current value: 18094.25, warn threshold: 100.0, crit threshold: 1000.0
  add_text(section, "Additional Info:\n #{unescape_text(output)}\n\n") if output
  output_match = output.match(/Current value: (?<current_value>[^,]*), warn threshold: (?<warn_threshold>[^,]*), crit threshold: (?<crit_threshold>[^,]*)/)
  if output_match
    add_html(section, "Current value: <b><font color='red'>#{output_match['current_value']}</font></b>, warn threshold: <b>#{output_match['warn_threshold']}</b>, crit threshold: <b><font color='red'>#{output_match['crit_threshold']}</font></b><br><br>")
  else
    add_html(section, "<b>Additional Info</b>:<br> #{output}<br><br>") if output
  end

  # Get Graphite graphs.
  # Extract the Graphite URL from NAGIOS_SERVICECHECKCOMMAND
  service_check_command = get_nagios_var("NAGIOS_SERVICECHECKCOMMAND")
  url = service_check_command.split(/!/)[-1].gsub(/'/, '')
  graphite_graphs = get_graphite_graphs(url)
  from_match = url.match(/from=(?<from>[^&]*)/)
  if from_match
    add_html(section, "<b>View from '#{from_match['from']}' ago</b><br>")
  else
   add_html(section, "<b>View from the time of the Nagios check</b><br>")
  end
  add_attachment graphite_graphs[0]    # The original graph.
  add_html(section, %Q(<img src="#{graphite_graphs[0]}" alt="graphite_graph" /><br><br>))
  add_html(section, '<b>24-hour View</b><br>')
  add_attachment graphite_graphs[1]    # The 24-hour graph.
  add_html(section, %Q(<img src="#{graphite_graphs[1]}" alt="graphite_graph" /><br><br>))
end

#get_graphite_graphs(url) ⇒ Object

Public: Retrieves Graphite graphs for the endpoint the check queried. url - The URL for the Graphite endpoint the check queried. Returns the file names of all retrieved graphs. These can be attached to the message.



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# File 'lib/nagios-herald/formatters/check_graphite_graph.rb', line 13

def get_graphite_graphs(url)
  begin
    graphite = NagiosHerald::Helpers::GraphiteGraph.new
    show_historical = true
    graphs =  graphite.get_graph(url, @sandbox, show_historical)
    return graphs
  rescue Exception => e
    logger.error "Exception encountered retrieving Graphite graphs - #{e.message}"
    e.backtrace.each do |line|
      logger.error "#{line}"
    end
    return []
  end
end