Class: FlumeLogger

Inherits:
Logger
  • Object
show all
Defined in:
lib/flume-logger/logger.rb,
lib/flume-logger/version.rb

Defined Under Namespace

Classes: Eventserver

Constant Summary collapse

HOST = 
::Socket.gethostname
PRIORITY = 
{
  "FATAL"    => 0,
  "ERROR"    => 1,
  "WARN"     => 2,
  "INFO"     => 3,
  "DEBUG"    => 4,
  "TRACE"    => 5 
}
VERSION = 
"0.1.5"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host, port, flume_type = :ng, headers = {}) ⇒ FlumeLogger

Returns a new instance of FlumeLogger.



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# File 'lib/flume-logger/logger.rb', line 15

def initialize(host, port, flume_type=:ng, headers={})
  super(::FlumeLogger::Eventserver.new(host, port, flume_type))
  @type = flume_type
  @headers = headers
end

Instance Attribute Details

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/flume-logger/logger.rb', line 3

def client
  @client
end

Instance Method Details

#add(severity, message = nil, progname = nil, &block) ⇒ Object 



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# File 'lib/flume-logger/logger.rb', line 21

def add(severity, message = nil, progname = nil, &block)
  severity ||= UNKNOWN
  if severity < @level
    return true
  end
  progname ||= @progname
  if message.nil?
    if block_given?
      message = yield
    else
      message = progname
      progname = @progname
    end
  end
  @logdev.write(
    format_message(format_severity(severity), Time.now, progname, message))
  true
end

#format_message(severity, time, progname, message) ⇒ Object 



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# File 'lib/flume-logger/logger.rb', line 40

def format_message(severity, time, progname, message)
  data = message
  body = case data
  when Hash
    @headers = data.clone
    if @headers.has_key?('message')
      @headers.delete('message')
    end
    data['message'] || "No 'message' in Hash"
  when String
    data
  end

  if progname
    @headers['application'] = progname
  end
  @headers['host'] ||= HOST

  event = case @type
  when :ng
    $:.push File.expand_path("../flume-ng", __FILE__)
    require 'thrift_source_protocol'

    @headers['pri'] = severity
    evt = ThriftFlumeEvent.new()
    evt.headers = @headers
    evt.body = body
    evt
  when :og
    $:.push File.expand_path("../flume-og", __FILE__)
    require 'thrift_flume_event_server'  

    evt = ThriftFlumeEvent.new()
    evt.timestamp = time.to_f.to_i * 1000
    evt.priority = PRIORITY[severity]
    evt.body = body
    evt.host = @headers['host']
    evt.nanos = time.usec * 1000
    @headers.delete('host')
    evt.fields = @headers
    evt
  end
  
  event
end