Class: MQ::Logger

Inherits:
Object
  • Object
show all
Defined in:
lib/mq/logger.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ Logger

Returns a new instance of Logger.



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# File 'lib/mq/logger.rb', line 3

def initialize *args, &block
  opts = args.pop if args.last.is_a? Hash
  opts ||= {}

  printer(block) if block

  @prop = opts
  @tags = ([:timestamp] + args).uniq
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing ⇒ Object 



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# File 'lib/mq/logger.rb', line 57

def log severity, *args
  opts = args.pop if args.last.is_a? Hash and args.size != 1
  opts ||= {}
  opts = @prop.clone.update(opts)

  data = args.shift

  data = {:type => :exception,
          :name => data.class.to_s.intern,
          :backtrace => data.backtrace,
          :message => data.message} if data.is_a? Exception

  (@tags + args).each do |tag|
    tag = tag.to_sym
    case tag
    when :timestamp
      opts.update :timestamp => Time.now
    when :hostname
      @hostname ||= { :hostname => `hostname`.strip }
      opts.update @hostname
    when :process
      @process_id ||= { :process_id => Process.pid,
                        :process_name => $0,
                        :process_parent_id => Process.ppid,
                        :thread_id => Thread.current.object_id }
      opts.update :process => @process_id
    else
      (opts[:tags] ||= []) << tag
    end
  end

  opts.update(:severity => severity,
              :msg => data)

  print(opts)
  unless Logger.disabled?
    MQ.fanout('logging', :durable => true).publish Marshal.dump(opts)
  end

  opts
end

Instance Attribute Details

#prop ⇒ Object (readonly) Also known as: base

Returns the value of attribute prop.



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# File 'lib/mq/logger.rb', line 13

def prop
  @prop
end

Class Method Details

.disable ⇒ Object 



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# File 'lib/mq/logger.rb', line 85

def self.disable
  @disabled = true
end

.disabled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mq/logger.rb', line 77

def self.disabled?
  !!@disabled
end

.enable ⇒ Object 



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# File 'lib/mq/logger.rb', line 81

def self.enable
  @disabled = false
end

.printer(&block) ⇒ Object 



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# File 'lib/mq/logger.rb', line 72

def self.printer &block
  @printer = block if block
  @printer
end

Instance Method Details

#log(severity, *args) ⇒ Object Also known as: method_missing 



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# File 'lib/mq/logger.rb', line 16

def log severity, *args
  opts = args.pop if args.last.is_a? Hash and args.size != 1
  opts ||= {}
  opts = @prop.clone.update(opts)

  data = args.shift

  data = {:type => :exception,
          :name => data.class.to_s.intern,
          :backtrace => data.backtrace,
          :message => data.message} if data.is_a? Exception

  (@tags + args).each do |tag|
    tag = tag.to_sym
    case tag
    when :timestamp
      opts.update :timestamp => Time.now
    when :hostname
      @hostname ||= { :hostname => `hostname`.strip }
      opts.update @hostname
    when :process
      @process_id ||= { :process_id => Process.pid,
                        :process_name => $0,
                        :process_parent_id => Process.ppid,
                        :thread_id => Thread.current.object_id }
      opts.update :process => @process_id
    else
      (opts[:tags] ||= []) << tag
    end
  end

  opts.update(:severity => severity,
              :msg => data)

  print(opts)
  unless Logger.disabled?
    MQ.fanout('logging', :durable => true).publish Marshal.dump(opts)
  end

  opts
end

#print(data = nil, &block) ⇒ Object Also known as: printer 



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# File 'lib/mq/logger.rb', line 59

def print data = nil, &block
  if block
    @printer = block
  elsif data.is_a? Proc
    @printer = data
  elsif data
    (pr = @printer || self.class.printer) and pr.call(data)
  else
    @printer
  end
end