Class: Backup::S3Actor

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

Direct Known Subclasses

ChunkingS3Actor

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 11

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   = c[:aws_bucket]
  @s3 = RightAws::S3.new(@access_key, @secret_key)
  @bucket = @s3.bucket(@bucket_key) # bucket needs to exist
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 8

def config
  @config
end

#rotation ⇒ Object

Returns the value of attribute rotation.



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# File 'lib/backup/s3_helpers.rb', line 6

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 60

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

#delete(object_key) ⇒ Object

Remove a file from s3



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# File 'lib/backup/s3_helpers.rb', line 40

def delete(object_key)
  puts "delete: #{object_key}"
  @bucket.key(object_key).delete
end

#put(last_result) ⇒ Object

Send a file to s3



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# File 'lib/backup/s3_helpers.rb', line 32

def put(last_result)
  object_key = Rotator.timestamped_prefix(last_result)
  puts "put: #{object_key}"
  @bucket.put(object_key, open(last_result))
  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 47

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