Class: LogStash::Outputs::HTTPBatcher

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

Instance Method Summary collapse

Constructor Details

#initialize(url, idle_flush, logger, headers, limit, nthreads, verbose) ⇒ HTTPBatcher

Returns a new instance of HTTPBatcher.



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# File 'lib/logstash/outputs/HTTPBatcher.rb', line 11

def initialize(url, idle_flush, logger, headers, limit, nthreads, verbose)
  @url = URI.parse(url)
  @idle_flush = idle_flush
  @logger = logger
  @headers = headers
  @limit = limit
  @verbose = verbose

  @content_type = "application/json"
  @stopped = false

  @queue_mutex = Mutex.new
  @queue = []

  @flush_time = nil
  @flush_thread = create_flush_thread()
  @work_queue = WorkQueue.new nthreads, nil
end

Instance Method Details

#create_flush_thread ⇒ Object

def receive



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# File 'lib/logstash/outputs/HTTPBatcher.rb', line 58

def create_flush_thread
  return Thread.new do
    while !@stopped do
      now = Time.now
      if @flush_time != nil && @flush_time <= now
        enqueue_batch
        @flush_time = nil
      end

      sleep(@flush_time == nil ? @idle_flush : @flush_time - now)
    end
  end
end

#enqueue_batch ⇒ Object 



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# File 'lib/logstash/outputs/HTTPBatcher.rb', line 72

def enqueue_batch
  tosend = []
  @queue_mutex.synchronize do
    tosend = @queue.shift(@limit)
  end

  if tosend.size > 0
    @work_queue.enqueue_b do
      send_batch tosend
    end
  end
end

#receive(event) ⇒ Object 



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# File 'lib/logstash/outputs/HTTPBatcher.rb', line 44

def receive(event)
  size = 0
  @queue_mutex.synchronize do
    @queue << event
    size = @queue.size
  end

  if size >= @limit
    enqueue_batch
  end

  @flush_time = Time.now + @idle_flush
end

#send_batch(tosend) ⇒ Object 



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# File 'lib/logstash/outputs/HTTPBatcher.rb', line 85

def send_batch(tosend)
  connection = Thread.current["connection"]
  if connection == nil
    if @verbose
      puts "creating new https connection"
    end

    connection = Net::HTTP.new(@url.host, @url.port)
    connection.use_ssl = true
    connection.verify_mode = OpenSSL::SSL::VERIFY_PEER
    Thread.current["connection"] = connection
  end

  beginning = Time.now
  request = Net::HTTP::Post.new(@url.request_uri)

  request["Content-Type"] = @content_type
  if @headers
    @headers.each do |k,v|
      request.headers[k] = v
    end
  end
  
  if @verbose
    puts "posting #{tosend.size} records"
  end

  request.body = LogStash::Json.dump(tosend)
  response = connection.request request

  status = response.code
  rbody = response.read_body

  if status != "200"
    raise "POST failed with status #{status} (#{rbody})"
  end

  if @verbose
    time = Time.now - beginning
    puts "POST response in #{time.to_s} #{status} #{rbody}"
  end

rescue Exception => e
  if @verbose
    @logger.warn("Unhandled exception", :request => request, :exception => e, :stacktrace => e.backtrace)
  else
    @logger.warn("Unhandled exception", :host => request["host"], :exception => e, :stacktrace => e.backtrace)
  end
end

#stop ⇒ Object

def initialize



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# File 'lib/logstash/outputs/HTTPBatcher.rb', line 30

def stop
  if @verbose
    puts "stopping batcher (have #{@queue.size()} queued message)"
  end

  @stopped = true
  while @queue.size() > 0 do
    enqueue_batch
  end

  @flush_thread.join
  @work_queue.join
end