Class: Fluent::FlumeInput

Inherits:
Input
  • Object
show all
Defined in:
lib/fluent/plugin/in_flume.rb

Defined Under Namespace

Classes: FluentFlumeHandler

Instance Method Summary collapse

Constructor Details

#initialize ⇒ FlumeInput

Returns a new instance of FlumeInput.



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# File 'lib/fluent/plugin/in_flume.rb', line 33

def initialize
  require 'thrift'
  $:.unshift File.join(File.dirname(__FILE__), 'thrift')
  require 'flume_types'
  require 'flume_constants'
  require 'thrift_flume_event_server'

  super
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/in_flume.rb', line 43

def configure(conf)
  super
end

#run ⇒ Object 



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# File 'lib/fluent/plugin/in_flume.rb', line 99

def run
  $log.debug "starting server: #{@server}"
  @server.serve
rescue
  $log.error "unexpected error", :error=>$!.to_s
  $log.error_backtrace
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/in_flume.rb', line 94

def shutdown
  @transport.close unless @transport.closed? # TODO
  #@thread.join # TODO
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/in_flume.rb', line 47

def start
  $log.debug "listening flume on #{@bind}:#{@port}"

  handler = FluentFlumeHandler.new
  handler.tag_field = @tag_field
  handler.default_tag = @default_tag
  handler.add_prefix = @add_prefix
  handler.message_format = @message_format
  processor = ThriftFlumeEventServer::Processor.new handler

  @transport = Thrift::ServerSocket.new @bind, @port
  unless @is_framed
    transport_factory = Thrift::BufferedTransportFactory.new
  else
    raise ConfigError, "in_flume: unsupported is_framed '#{@is_framed}'"
  end

  unless ['text', 'json'].include? @message_format
    raise 'Unknown format: message_format=#{@message_format}'
  end

  # 2011/09/29 Kazuki Ohta <[email protected]>
  # This section is a workaround to set strict_read and strict_write option.
  # Ruby-Thrift 0.7 set them both 'true' in default, but Flume protocol set
  # them both 'false'.
  protocol_factory = Thrift::BinaryProtocolFactory.new
  protocol_factory.instance_eval {|obj|
    def get_protocol(trans) # override
      return Thrift::BinaryProtocol.new(trans,
                                        strict_read=false,
                                        strict_write=false)
    end
  }

  case @server_type
  when 'simple'
    @server = Thrift::SimpleServer.new processor, @transport, transport_factory, protocol_factory
  when 'threaded'
    @server = Thrift::ThreadedServer.new processor, @transport, transport_factory, protocol_factory
  when 'thread_pool'
    @server = Thrift::ThreadPoolServer.new processor, @transport, transport_factory, protocol_factory
  else
    raise ConfigError, "in_flume: unsupported server_type '#{@server_type}'"
  end
  @thread = Thread.new(&method(:run))
end