Class: Piston::Commands::Update

Inherits:
Base
  • Object
show all
Defined in:
lib/piston/commands/update.rb

Instance Attribute Summary

Attributes inherited from Base

#options

Instance Method Summary collapse

Methods inherited from Base

#force, #guess_wc, #initialize, logger, #logger, #quiet, #verbose, #working_copy!

Constructor Details

This class inherits a constructor from Piston::Commands::Base

Instance Method Details

#run(wcdir, to) ⇒ Object

wcdir is the working copy we’re going to change. to is the new target revision we want to be at after update returns.



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# File 'lib/piston/commands/update.rb', line 8

def run(wcdir, to)
  working_copy = working_copy!(wcdir)

  logger.debug {"Recalling previously saved values"}
  values = working_copy.recall

  repository_class = values["repository_class"]
  repository_url = values["repository_url"]
  repository = repository_class.constantize.new(repository_url)
  from_revision = repository.at(values["handler"])
  to_revision = repository.at(to)

  logger.debug {"Validating that #{from_revision} exists and is capable of performing the update"}
  from_revision.validate!

  logger.info {"Updating from #{from_revision} to #{to_revision}"}
  working_copy.apply_differences(from_revision.differences_with(to_revision))
end