Class: Backup::S3Actor

Inherits:
Object
  • Object
show all
Includes:
AWS::S3
Defined in:
lib/backup/s3_helpers.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ S3Actor

Returns a new instance of S3Actor.



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# File 'lib/backup/s3_helpers.rb', line 12

def initialize(config)
  @config       = config
  @rotation_key = c[:rotation_object_key] ||= 'backup_rotation_index.yml'
  @access_key   = c[:aws_access] ||= ENV['AMAZON_ACCESS_KEY_ID']
  @secret_key   = c[:aws_secret] ||= ENV['AMAZON_SECRET_ACCESS_KEY']
  @bucket_key   = "#{@access_key}.#{c[:backup_path]}"
  Base.establish_connection!(
    :access_key_id     => @access_key,
    :secret_access_key => @secret_key
  )
  begin
    # Look for our bucket, if it's not there, try to create it.
    @bucket = Bucket.find @bucket_key
  rescue NoSuchBucket
    @bucket = Bucket.create @bucket_key
    @bucket = Bucket.find @bucket_key
  end   
end

Instance Attribute Details

#config ⇒ Object (readonly) Also known as: c

Returns the value of attribute config.



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# File 'lib/backup/s3_helpers.rb', line 9

def config
  @config
end

#rotation ⇒ Object

Returns the value of attribute rotation.



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# File 'lib/backup/s3_helpers.rb', line 7

def rotation
  @rotation
end

Instance Method Details

#cleanup(generation, keep) ⇒ Object

Expire old objects



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# File 'lib/backup/s3_helpers.rb', line 71

def cleanup(generation, keep)
  puts "Cleaning up"
  
  keys = self.rotation[generation]
  diff = keys.size - keep
  
  1.upto( diff ) do
    extra_key = keys.shift
    delete extra_key
  end
  # store updated index
  self.rotation = keys
end

#delete(object_key) ⇒ Object

Remove a file from s3



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# File 'lib/backup/s3_helpers.rb', line 52

def delete(object_key)
  S3Object.delete object_key, @bucket.name
end

#put(last_result) ⇒ Object

Send a file to s3



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# File 'lib/backup/s3_helpers.rb', line 42

def put(last_result)
  puts last_result
  object_key = Rotator.timestamped_prefix(last_result)
  S3Object.store object_key,
                 open(last_result),
                 @bucket.name
  object_key
end

#verify_rotation_hierarchy_exists(hierarchy) ⇒ Object

Make sure our rotation index exists and contains the hierarchy we’re using. Create it if it does not exist



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# File 'lib/backup/s3_helpers.rb', line 58

def verify_rotation_hierarchy_exists(hierarchy)
  begin
    index = self.rotation
    verified_index = index.merge(init_rotation_index(hierarchy)) { |m,x,y| x ||= y }
    unless (verified_index == index)
      self.rotation = verified_index
    end
  rescue NoSuchKey
    self.rotation = init_rotation_index(hierarchy)
  end
end