Class: Qnotifier::MainProcess

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

Instance Method Summary collapse

Constructor Details

#initialize ⇒ MainProcess

Returns a new instance of MainProcess.



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# File 'lib/qnotifier.rb', line 32

def initialize
  Qnotifier::Storage.restore
  
  @alert_count = 0
end

Instance Method Details

#alert(key, message, priority) ⇒ Object 



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# File 'lib/qnotifier.rb', line 168

def alert(key, message, priority)
  start_logging
  load_config
  
  alerts = {"User" => [[key, message, priority]]}
  webservice = Qnotifier::WebService.new
  webservice.config = @config
  webservice.send_alerts(alerts)
end

#load_config ⇒ Object 



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# File 'lib/qnotifier.rb', line 189

def load_config
  # Load from /var/lib/qnotifier/qnotifier_config.yml if the file is there
  begin
    @config = YAML::load(File.open('/var/lib/qnotifier/qnotifier_config.yml'))
  rescue Exception => e
    puts "Can't open /var/lib/qnotifier/qnotifier_config.yml"
    Qnotifier.log.error "Can't open /var/lib/qnotifier/qnotifier_config.yml"
    exit
  end
  
  unless @config["api_key"]
    begin
      api_key_file = File.open("/var/lib/qnotifier/api_key")
      while (line = api_key_file.readline)
        @config["api_key"] = line
      end
    rescue EOFError
    rescue Exception => e
      Qnotifier.log.debug "Can't get API key, have you registered?"
    end
  end
end

#load_plugin_file(file) ⇒ Object 



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# File 'lib/qnotifier.rb', line 103

def load_plugin_file(file)
  return unless file =~ /\.rb/
  require file
  class_name = "Qnotifier::#{File.basename(file, ".rb").split(/[^a-z0-9]/i).map{|w| w.capitalize}.join}"
  begin
    plugin = eval(class_name).new
  rescue
    Qnotifier.log.error "Couldn't process the plugin file #{file}"
    return
  end
  plugin.class_name = class_name
  plugin.config = @config
  unless plugin.class.superclass.name == "Qnotifier::Plugin"
    Qnotifier.log.fatal "Attempted to load a non Qnotifier::Plugin plugin subclass at #{file} - make sure this directory only includes Qnotifier::Plugin subclasses"
    return
  end
  @plugins << plugin
end

#register(code) ⇒ Object 



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# File 'lib/qnotifier.rb', line 138

def register(code)
  
  start_logging
  load_config
        
  if @config["api_key"]
    Qnotifier.log.error "Server was already registered. Re-registering."
  end
  
  Qnotifier::Storage.wipe
      
  webservice = Qnotifier::WebService.new
  webservice.config = @config
  api_key = webservice.register_server(code)
        
  if api_key
    save_api_key(api_key)
    return api_key
  else
    return nil
  end
end

#run ⇒ Object 



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# File 'lib/qnotifier.rb', line 47

def run
  start_logging
  load_config
  
  Qnotifier.log.info "QNotifier Starting"

  if Qnotifier::Storage.get("server_disabled_pings")
    Qnotifier.log.fatal "Disabled by the Qnotifer API, please re-register (qnotifier --register key) this agent to enable. Exiting."
    exit
  end

  unless @config["api_key"]
    error_message =  "Missing API Key, please register this agent first."
    puts error_message
    Qnotifier.log.fatal error_message
    exit
  end

  # Our Plugins
  @plugins = []

  # Load the built in plugins
  Dir[File.dirname(__FILE__) + '/../plugins/*.rb'].each do |file| 
    load_plugin_file(file)
  end

  # Load the user plugins
  Dir['/var/lib/qnotifier/plugins/*.rb'].each do |file| 
    load_plugin_file(file)
  end

  # Load the web service
  webservice = Qnotifier::WebService.new
  webservice.config = @config

  loop do
    @alerts = {}
    @reports = {}
    @stats = {}
    @report_count = 0
    
    for plugin in @plugins
      run_plugin(plugin)
    end

    # Send the alerts, reports and stats to the API
    webservice.send_alerts(@alerts)
    webservice.send_reports_stats(@reports, @stats, @alert_count)

    Qnotifier::Storage.save
    
    Qnotifier.log.debug "QNotifier Check Complete"
    sleep 30
  end
end

#run_plugin(plugin) ⇒ Object 



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# File 'lib/qnotifier.rb', line 122

def run_plugin(plugin)
  begin
    Timeout.timeout 30 do
      plugin.run
    end
  rescue RuntimeError => e 
    Qnotifier.log.error "#{plugin.class_name} Plugin Error: #{e.message}"
  rescue Errno::ENOENT => e
    Qnotifier.log.error "#{plugin.class_name} Plugin Error: #{e.message}" 
  end
  @alerts.merge!(plugin.alerts) if plugin.alerts
  @reports.merge!(plugin.reports) if plugin.reports
  @stats.merge!(plugin.stats) if plugin.stats
  @alert_count += plugin.alert_count
end

#save_api_key(api_key) ⇒ Object 



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# File 'lib/qnotifier.rb', line 178

def save_api_key(api_key)
  return unless api_key
  @config["api_key"] = api_key
  begin
    File.open("/var/lib/qnotifier/api_key", 'w') {|f| f.write(api_key) }
    File.chmod(0600, "/var/lib/qnotifier/api_key")
  rescue Exception => e
    Qnotifier.log.fatal "Can't save API Key #{e.message}"
  end
end

#start_logging ⇒ Object 



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# File 'lib/qnotifier.rb', line 38

def start_logging
  # Logging
  if $qnotifier_debug
    Qnotifier.log.level = Logger::DEBUG 
  else
    Qnotifier.log.level = Logger::INFO 
  end
end

#wipe ⇒ Object 



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# File 'lib/qnotifier.rb', line 161

def wipe
  start_logging
  load_config
  
  Qnotifier::Storage.wipe
end