Class: LogStash::Outputs::Snmptrap

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/outputs/snmptrap.rb

Overview

An example output that does nothing.

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Snmptrap

Returns a new instance of Snmptrap.



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# File 'lib/logstash/outputs/snmptrap.rb', line 28

def initialize(*args)
  super(*args)
end

Instance Method Details

#receive(event) ⇒ Object 



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# File 'lib/logstash/outputs/snmptrap.rb', line 68

def receive(event)
  return unless output?(event)
  if event == LogStash::SHUTDOWN
    finished
    return
  end
  @oid = event.sprintf(@oid)
  @codec.encode(event)
end

#register ⇒ Object 



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# File 'lib/logstash/outputs/snmptrap.rb', line 33

def register
  require "snmp"

  @codec.on_event do |event|

    #set some variables for the trap sender
    trapsender_opts = {:trap_port => @port, :host => @host, :community => @community }

    #prep and do the full send
    SNMP::Manager.open(trapsender_opts) do |snmp|
      #set it up and send the whole event using the user specified codec
      varbinds = []
      @varbinds.each do |key, expression|
        value = expression.clone
        if value.start_with?("!") 
          value.delete_prefix!("!")
          value = eval(value)
        elsif value.start_with?("@") 
          value.delete_prefix!("@")
          value = event.get(value)
        end
        unless value.nil?
          varbinds << SNMP::VarBind.new(key, SNMP::OctetString.new(value.force_encoding('ASCII-8BIT')))
        end
      end

      #we dont actually care about the sys_up_time...do we.
      snmp.trap_v2(0, @oid, varbinds)
      
      @logger.info("@oid: #{@oid.to_s} @varbinds: #{varbinds.to_s}", :event => event) if @log
      end
  end
end