Class: Mighost::Rollbacker

Inherits:
Object
  • Object
show all
Defined in:
lib/mighost/rollbacker.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(version) ⇒ Rollbacker

Returns a new instance of Rollbacker.



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# File 'lib/mighost/rollbacker.rb', line 14

def initialize(version)
  @version = version.to_s
  load_recovery_data
end

Instance Attribute Details

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/mighost/rollbacker.rb', line 12

def content
  @content
end

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/mighost/rollbacker.rb', line 12

def filename
  @filename
end

#recovery_source ⇒ Object (readonly)

Returns the value of attribute recovery_source.



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# File 'lib/mighost/rollbacker.rb', line 12

def recovery_source
  @recovery_source
end

#version ⇒ Object (readonly)

Returns the value of attribute version.



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# File 'lib/mighost/rollbacker.rb', line 12

def version
  @version
end

Class Method Details

.rollback_version!(version) ⇒ Object 



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# File 'lib/mighost/rollbacker.rb', line 108

def rollback_version!(version)
  new(version).rollback!
end

Instance Method Details

#can_rollback? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mighost/rollbacker.rb', line 33

def can_rollback?
  content.present?
end

#rollback! ⇒ Object

Raises:



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# File 'lib/mighost/rollbacker.rb', line 19

def rollback!
  raise SnapshotNotFound, "No snapshot or git recovery found for version #{version}" unless can_rollback?

  temp_file = write_temp_migration
  begin
    load_and_execute_down(temp_file)
    remove_from_schema_migrations
    Snapshot.delete_by_version(version) if recovery_source == :snapshot
  ensure
    temp_file.close
    temp_file.unlink
  end
end