Class: LogTwuncator::Truncator

Inherits:
Object
  • Object
show all
Defined in:
lib/log_twuncator/truncator.rb

Constant Summary collapse

TIMESTAMP_FORMAT = 
"%Y%m%d%H%M%S"
ATTRIBUTES = 
[:name, :age, :size, :source_dir, :filter, :archive_dir, :archive_name, :logger]
@@defaults = 
{ 
  :age => 7, 
  :size => 1_000,
  :archive_name => "[basename]_[timestamp].[ext]"
}

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Truncator

Returns a new instance of Truncator.



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# File 'lib/log_twuncator/truncator.rb', line 21

def initialize(options)      
  @options = @@defaults.merge(options)
  ATTRIBUTES.each {|sym| 
    instance_variable_set("@#{sym}".to_sym, @options[sym]) 
  }
  if errors = self.class.validate_options(@options)
    raise InvalidTruncatorOptions, errors.join("\n")
  end
end

Instance Method Details

#truncate ⇒ Object

Find files using source directory and filter and then loop of files checking for files large than size in kilobytes or older than age in days.



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# File 'lib/log_twuncator/truncator.rb', line 33

def truncate
  path_filter = File.join(@source_dir, @filter)
  truncated = 0
  time = Time.now - age_in_seconds
  Dir[path_filter].each do |file|
    next unless (@size > 0 && File.stat(file).size > size_in_bytes) || (@age > 0 && File.stat(file).ctime < time)
    archive_time = Time.now
    archive file, archive_time
    File.truncate(file, 0)        
    set_truncated_time(file, archive_time)
    truncated += 1
    log "Truncated #{file}"
  end
  truncated
rescue => e
  log "Unknown error occurred: #{e}"
end