Class: LogStash::Codecs::Sflow

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/codecs/sflow.rb

Overview

The “sflow” codec is for decoding sflow v5 flows.

Instance Method Summary collapse

Constructor Details

#initialize(params = {}) ⇒ Sflow

Returns a new instance of Sflow.



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# File 'lib/logstash/codecs/sflow.rb', line 16

def initialize(params = {})
  super(params)
  @threadsafe = false
end

Instance Method Details

#decode(payload) ⇒ Object 



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# File 'lib/logstash/codecs/sflow.rb', line 31

def decode(payload)
  decoded = SFlow.read(payload)

  events = []

  decoded['samples'].each do |sample|
    if sample['sample_data'].to_s.eql? ''
      @logger.warn("Unknown sample entreprise #{sample['sample_entreprise'].to_s} - format #{sample['sample_format'].to_s}")
      next
    end
    sample['sample_data']['records'].each do |record|
      # Ensure that some data exist for the record
      if record['record_data'].to_s.eql? ''
        @logger.warn("Unknown record entreprise #{record['record_entreprise'].to_s}, format #{record['record_format'].to_s}")
        next
      end

      # Create the logstash event
      event = {
          LogStash::Event::TIMESTAMP => LogStash::Timestamp.now
      }

      decoded.each_pair do |k, v|
        unless k.to_s.eql? 'samples' or @removed_field.include? k.to_s
          event["#{k}"] = v
        end
      end

      sample.each_pair do |k, v|
        unless k.to_s.eql? 'sample_data' or @removed_field.include? k.to_s
          event["#{k}"] = v
        end
      end

      sample['sample_data'].each_pair do |k, v|
        unless k.to_s.eql? 'records' or @removed_field.include? k.to_s
          event["#{k}"] = v
        end
      end

      record.each_pair do |k, v|
        unless k.to_s.eql? 'record_data' or @removed_field.include? k.to_s
          event["#{k}"] = v
        end
      end

      record['record_data'].each_pair do |k, v|
        event["#{k}"] = v
      end

      events.push(event)
    end
  end

  events.each do |event|
    yield event
  end
end

#register ⇒ Object 



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# File 'lib/logstash/codecs/sflow.rb', line 24

def register
  require "logstash/codecs/sflow/datagram"
end