Class: Proxy::Monitoring::Icinga2::Icinga2ApiObserver

Inherits:
Object
  • Object
show all
Includes:
Log, Common, TasksCommon
Defined in:
lib/smart_proxy_monitoring_icinga2/icinga2_api_observer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from TasksCommon

#action, #activated?, #start

Constructor Details

#initialize(queue) ⇒ Icinga2ApiObserver

Returns a new instance of Icinga2ApiObserver.



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# File 'lib/smart_proxy_monitoring_icinga2/icinga2_api_observer.rb', line 12

def initialize(queue)
  @queue = queue.queue
  @semaphore = Mutex.new
end

Instance Attribute Details

#semaphore ⇒ Object (readonly)

Returns the value of attribute semaphore.



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# File 'lib/smart_proxy_monitoring_icinga2/icinga2_api_observer.rb', line 10

def semaphore
  @semaphore
end

Instance Method Details

#do_start ⇒ Object 



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# File 'lib/smart_proxy_monitoring_icinga2/icinga2_api_observer.rb', line 54

def do_start
  @thread = Thread.new { monitor }
  @thread.abort_on_exception = true
  @thread
end

#monitor ⇒ Object 



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# File 'lib/smart_proxy_monitoring_icinga2/icinga2_api_observer.rb', line 17

def monitor
  loop do
    logger.debug "Connecting to Icinga event monitoring api: #{Icinga2Client.baseurl}."

    ssl_socket = Icinga2Client.events_socket('/events?queue=foreman&types=StateChange&types=AcknowledgementSet&types=AcknowledgementCleared&types=DowntimeTriggered&types=DowntimeRemoved')

    logger.info 'Icinga event api monitoring started.'

    while line = ssl_socket.gets
      next unless line[0] == '{'

      with_event_counter('Icinga2 Event API Monitor') do
        parsed = JSON.parse(line)
        if @queue.size > 100_000
          @queue.clear
          logger.error 'Queue was full. Flushing. Events were lost.'
        end
        @queue.push(parsed)
      rescue JSON::ParserError => e
        logger.error "Icinga2 Event API Monitor: Malformed JSON: #{e.message}"
      end

    end
    logger.info 'Icinga event api monitoring stopped.'
  end
rescue Errno::ECONNREFUSED => e
  logger.error "Icinga Event Stream: Connection refused. Retrying in 5 seconds. Reason: #{e.message}"
  sleep 5
  retry
rescue Exception => e
  logger.error "Error while monitoring: #{e.message}\n#{e.backtrace.join("\n")}"
  sleep 1
  retry
ensure
  ssl_socket&.sysclose
end

#stop ⇒ Object 



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# File 'lib/smart_proxy_monitoring_icinga2/icinga2_api_observer.rb', line 60

def stop
  @thread&.terminate
end