Class: LogfileInterval::Logfile

Inherits:
Object
  • Object
show all
Defined in:
lib/logfile_interval/logfile.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename, parser) ⇒ Logfile

Returns a new instance of Logfile.



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# File 'lib/logfile_interval/logfile.rb', line 5

def initialize(filename, parser)
  @filename = filename
  @parser   = parser
end

Instance Attribute Details

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/logfile_interval/logfile.rb', line 3

def filename
  @filename
end

#parser ⇒ Object (readonly)

Returns the value of attribute parser.



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# File 'lib/logfile_interval/logfile.rb', line 3

def parser
  @parser
end

Instance Method Details

#each_line ⇒ Object 



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# File 'lib/logfile_interval/logfile.rb', line 25

def each_line
  return unless exist?
  return enum_for(:each_line) unless block_given?

  f = Util::FileBackward.new(@filename)
  while(line = f.gets)
    yield line.chomp
  end
  f.close
end

#each_parsed_line ⇒ Object 



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# File 'lib/logfile_interval/logfile.rb', line 36

def each_parsed_line
  return enum_for(:each_parsed_line) unless block_given?
  each_line do |line|
    record = parser.create_record(line)
    yield record if record
  end
end

#exist? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/logfile_interval/logfile.rb', line 10

def exist?
  filename && File.exist?(@filename)
end

#first_timestamp ⇒ Object 



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# File 'lib/logfile_interval/logfile.rb', line 14

def first_timestamp
  return unless exist?
  File.open(@filename) do |f|
    while line = f.gets
      if record = parser.create_record(line)
        return record.time
      end
    end
  end
end