Class: LogStash::Filters::Varnishlog

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/filters/varnishlog.rb

Instance Method Summary collapse

Instance Method Details

#filter(event) ⇒ Object 



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# File 'lib/logstash/filters/varnishlog.rb', line 40

def filter(event)
  items = event.get("[message]").split("\n")
  if request=/\*+\s+<<\s+(?<type>\w+)\s+>>\s+/.match(items[0])
    event.set("type", request['type'].downcase)
  end
  ##Remove Blacklisted items from items hash
  items = items.grepv(blacklist_sections.join("|")) if blacklist_sections.any?
  ##

  ##timestamps
  timestamps = items.grep(/Timestamp/)
  timestamps.each do |timestamp|
    if match = /-\s+Timestamp\s+(?<step>.*): (?<time_a>.*) (?<time_b>.*) (?<time_c>.*)/.match(timestamp)
      event.set(normalize_fields("timestamp_" + match['step'] ), match['time_a'])
      event.set(normalize_fields("timestamp_" + match['step'] + "_raw"), match['time_a'] + " " + match['time_b'] + " " + match['time_c'])
    end
  end

  ##Acct
   = items.grep(/(Be|Req)Acct/)
  .each do |acct|
    if acct_match = /-\s+(Be|Req)Acct\s+(?<size_a>\d+)\s+(?<size_b>\d+)\s+(?<size_c>\d+)\s+(?<size_d>\d+)\s+(?<size_e>\d+)\s+(?<size_f>\d+)/.match(acct)
      event.set("bytes", acct_match['size_e'])
    end
  end
  ## VCL Log
  vcl_log = items.grep(/VCL_Log/)
  log_lines = []
  vcl_log.each_with_index do |log, index|
    if match = /-\s+VCL_Log\s+(?<log_line>.*)/.match(log)
      log_lines.push(match['log_line'])
    end
    if index == log_lines.size - 1
      event.set(normalize_fields("VCL_Log"), log_lines)
    end
  end

  # Requests
  ## Request headers.
  request_headers = items.grep(/(Be)?([rR]eq|[rR]esp)Header/)
  request_headers.each do |header|
    if match = /-+\s+(Be)?([rR]eq|[rR]esp)Header\s+(?<header_name>.*?): (?<header_value>.*)/.match(header)
      event.set(normalize_fields(match['header_name']), match['header_value'])
    end
  end
  ## Match ReqMethod.
  if method_match = /-+\s+(Be)?([rR]eq|[rR]esp)Method\s+(?<method>.*)/.match(items.grep(/(Be)?([rR]eq|[rR]esp)Method/)[0])
    event.set("http_method", method_match['method'])
  end
  ## Match ReqURL.
  if url_match = /-+\s+(Be)?([rR]eq|[rR]esp)URL\s+(?<url>\/.*)/.match(items.grep(/(Be)?([rR]eq|[rR]esp)URL/)[0])
    event.set("url", url_match['url'])
  end
  ## Match ReqProtocol.
  if protocol_match = /-+\s+(Be)?([rR]eq|[rR]esp)Protocol\s+(?<protocol>.*)/.match(items.grep(/(Be)?([rR]eq|[rR]esp)Protocol/)[0])
    event.set("protocol", protocol_match['protocol'])
  end
  ## FetchError.
  if error_match = /-+\s+FetchError\s+(?<error>.*)/.match(items.grep(/FetchError/)[0])
    event.set("FetchError", error_match['error'])
  end
  ## Match RespStatus
  status_match = items.grep(/(Be)?([rR]eq|[rR]esp)Status/)
  states = []
  status_match.each_with_index do |status, index|
    if match = /-+\s+(Be)?([rR]eq|[rR]esp)Status\s+(?<status>.*)/.match(status)
      states.push(match['status'].to_i)
    end
    if index == status_match.size - 1
      event.set("http-rc", states)
    end
  end
  ## Match RespReason
  response_reason = items.grep(/(Be)?([rR]eq|[rR]esp)Reason/)
  reasons = []
  response_reason.each_with_index do |reason, index|
    if match = /-+\s+(Be)?([rR]eq|[rR]esp)Reason\s+(?<reason>.*)/.match(reason)
      reasons.push(match['reason'])
    end
    if index == response_reason.size - 1
      event.set("reason", reasons)
    end
  end

  if @message
    # Replace the event message with our message as configured in the
    # config file.
    event.set("message", @message)
  end

  # filter_matched should go in the last line of our successful code
  filter_matched(event)
end

#register ⇒ Object 



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# File 'lib/logstash/filters/varnishlog.rb', line 35

def register
  # Add instance variables
end