Class: Backs3::Backup

Inherits:
Object
  • Object
show all
Includes:
Backs3, Storage
Defined in:
lib/backs3/backup.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Backs3

#load_backup_info, #logger, #md5, #save_backup_info

Constructor Details

#initialize(previous, options) ⇒ Backup

Returns a new instance of Backup.



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# File 'lib/backs3/backup.rb', line 8

def initialize(previous, options)
  @backups = previous.sort{|a,b| a.date <=> b.date } if previous
  @last_backup = self.backups.last
  @last_full_backup = self.backups.reverse.detect{|b| b.full == true }

  @date = Time.now.to_i
  @options = options
  @options['prefix'] ||= ''
  @full = @options['force-full'] || first_backup? || @date - @last_full_backup.date > (@options['full'] || 7).days
end

Instance Attribute Details

#date ⇒ Object (readonly)

Returns the value of attribute date.



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# File 'lib/backs3/backup.rb', line 6

def date
  @date
end

#done ⇒ Object (readonly)

Returns the value of attribute done.



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# File 'lib/backs3/backup.rb', line 6

def done
  @done
end

#files ⇒ Object (readonly)

Returns the value of attribute files.



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# File 'lib/backs3/backup.rb', line 6

def files
  @files
end

#full ⇒ Object (readonly)

Returns the value of attribute full.



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# File 'lib/backs3/backup.rb', line 6

def full
  @full
end

#last_backup ⇒ Object (readonly)

Returns the value of attribute last_backup.



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# File 'lib/backs3/backup.rb', line 6

def last_backup
  @last_backup
end

#last_full_backup ⇒ Object (readonly)

Returns the value of attribute last_full_backup.



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# File 'lib/backs3/backup.rb', line 6

def last_full_backup
  @last_full_backup
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/backs3/backup.rb', line 6

def options
  @options
end

Instance Method Details

#==(other_obj) ⇒ Object 



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# File 'lib/backs3/backup.rb', line 19

def ==(other_obj)
  other_obj.date == self.date && other_obj.full == self.full
end

#all_files ⇒ Object

All of the files for a backup. If the backup is partial this function will find the files from the last full backup to this one.



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# File 'lib/backs3/backup.rb', line 29

def all_files
  if !full && @last_full_backup
    backups = self.backups.select{|b| b.date >= @last_full_backup.date && b.date <= self.date }
    backups << self unless backups.include?(self)

    rfiles = backups.collect{|b| b.files}.flatten.uniq
    rfiles.reject! do |first_file|
      rfiles.detect{|second_file| second_file.path == first_file.path && second_file.backup_info.date > first_file.backup_info.date }
    end
    rfiles
  else
    self.files
  end
end

#backup ⇒ Object 



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# File 'lib/backs3/backup.rb', line 52

def backup
  raise "Cannot backup again!" if @done

  logger.info "Backing up #{@options['folder']} in key #{self.key}"

  @files = collect_files
  @files.each do |file|
    file.backup
  end

  update_backup_info
  storage.flush

  @done = true
  logger.info "Backup finished!"
end

#backups ⇒ Object 



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# File 'lib/backs3/backup.rb', line 23

def backups
  @backups ||= load_backup_info.sort{|a,b| a.date <=> b.date } || []
end

#first_backup? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/backs3/backup.rb', line 48

def first_backup?
  @last_full_backup.nil?
end

#key ⇒ Object 



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# File 'lib/backs3/backup.rb', line 44

def key
  @options['prefix'] + @date.to_s
end

#restore(location = '/tmp', file = nil) ⇒ Object 



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# File 'lib/backs3/backup.rb', line 69

def restore(location = '/tmp', file = nil)
  files = file.nil? ? all_files : all_files.select{|f| f.path == file}
  files.each do |file|
    file.restore(location)
  end
end

#to_yaml_properties ⇒ Object 



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# File 'lib/backs3/backup.rb', line 76

def to_yaml_properties
  instance_variables.reject{|i| %w(@backups).include?(i) }.sort
end