Class: Reacter::Message

Inherits:
Object
  • Object
show all
Defined in:
lib/reacter/parser.rb,
lib/reacter/message.rb,
lib/reacter/parsers/json.rb,
lib/reacter/parsers/tsdb.rb,
lib/reacter/parsers/collectd.rb,
lib/reacter/parsers/graphite.rb,
lib/reacter/parsers/kairosdb.rb

Defined Under Namespace

Classes: CollectdParser, GraphiteParser, JsonParser, KairosdbParser, Parser, TsdbParser

Constant Summary collapse

DEFAULT_SOURCE_NAME = 
'default'
DEFAULT_FORMAT = 
:json

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(message = {}) ⇒ Message

Returns a new instance of Message.



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# File 'lib/reacter/message.rb', line 10

def initialize(message={})
  @_data = {
    :raw        => message,
    :time       => (Time.now.to_i * 1000),
    :attributes => {},
    :metric     => nil,
    :source     => DEFAULT_SOURCE_NAME
  }.merge(message)

  if not @_data.has_key?(:event) and not @_data.has_key?(:value)
    @_data[:event] = true
  else
    @_data[:event] = false
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object 



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# File 'lib/reacter/message.rb', line 38

def method_missing(name, *args)
  @_data[name.to_sym] or args.first
end

Class Method Details

.dump(message, format = nil) ⇒ Object 



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# File 'lib/reacter/message.rb', line 61

def dump(message, format=nil)
  load_parsers() unless defined?(@@_parsers)

  if @@_parsers
    format = (@_format or DEFAULT_FORMAT) unless format

    if @@_parsers.has_key?(format.to_sym)
      return @@_parsers[format.to_sym].dump(message)
    end
  end

  return nil
end

.format=(format) ⇒ Object 



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# File 'lib/reacter/message.rb', line 43

def format=(format)
  @_format = format
end

.load_parsers ⇒ Object 



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# File 'lib/reacter/message.rb', line 47

def load_parsers()
  unless defined?(@@_parsers)
    @@_parsers = {}

  # load and initialize parsers
    Dir[File.join(File.dirname(__FILE__), 'parsers', '*.rb')].each do |i|
      i = File.basename(i,'.rb')
      require "reacter/parsers/#{i}"
      @@_parsers[i.to_sym] = Message.const_get("#{i.capitalize}Parser")
      @@_parsers[i.to_sym].configure(Reacter.get("parsers.#{i.downcase}", {}))
    end
  end
end

.parse(body, format = nil) ⇒ Object 



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# File 'lib/reacter/message.rb', line 75

def parse(body, format=nil)
  load_parsers()

# set format override if one was set
  format = @_format unless format

# split strings into lines
  body = body.lines if body.is_a?(String)
  messages = []

# format not specified, autodetect
  if format.nil?
    if body.respond_to?(:each)
      body.each do |message|
      # strings need to be detected and parsed
        if message.is_a?(String)
          next if message.strip.chomp.empty?

        # use first parser that claims it can handle this string
          @@_parsers.each do |name, parser|
            if parser.detected?(message)
              #Util.debug("Using parser #{name}")
              m = parser.parse(message)
              (m.is_a?(Array) ? messages += m : messages << m)
              next
            end
          end

      # hashes go directly into the stack
        elsif message.is_a?(Hash)
          messages << message
        end
      end
    end
  else
  # format given, attempt to use it
    begin
      m = @@_parsers[format].parse(message)
      (m.is_a?(Array) ? messages += m : messages << m)
    rescue
      raise "Error parsing format '#{format}'"
    end
  end

  messages.collect{|i| Message.new(i) }
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/reacter/message.rb', line 30

def [](key)
  @_data[key.to_sym]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/reacter/message.rb', line 34

def []=(key, value)
  @_data[key.to_sym] = value
end

#to_h ⇒ Object 



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# File 'lib/reacter/message.rb', line 26

def to_h
  @_data
end