Method: PEROBS::FlatFile#open

Defined in:
lib/perobs/FlatFile.rb

#open ⇒ Object

Open the flat file for reading and writing.



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# File 'lib/perobs/FlatFile.rb', line 66

def open
  file_name = File.join(@db_dir, 'database.blobs')
  new_db_created = false
  begin
    if File.exist?(file_name)
      @f = File.open(file_name, 'rb+')
    else
      PEROBS.log.info "New FlatFile database '#{file_name}' created"
      @f = File.open(file_name, 'wb+')
      new_db_created = true
    end
  rescue IOError => e
    PEROBS.log.fatal "Cannot open FlatFile database #{file_name}: " +
      e.message
  end
  unless @f.flock(File::LOCK_NB | File::LOCK_EX)
    PEROBS.log.fatal "FlatFile database '#{file_name}' is locked by " +
      "another process"
  end
  @f.sync = true

  open_index_files(!new_db_created)
end