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Contents
module Capistrano
# This module extends a Rake::Task to freeze it to prevent it from being
# enhanced. This is used to prevent users from enhancing a task at the wrong
# point of Capistrano's boot process, which can happen if a Capistrano plugin
# is loaded in deploy.rb by mistake (instead of in the Capfile).
#
# Usage:
#
# task = Rake.application["load:defaults"]
# task.invoke
# task.extend(Capistrano::ImmutableTask) # prevent further modifications
#
module ImmutableTask
def self.extended(task)
task.freeze
end
def enhance(*args, &block)
$stderr.puts <<-MESSAGE
WARNING: #{name} has already been invoked and can no longer be modified.
Check that you haven't loaded a Capistrano plugin in deploy.rb by mistake.
Plugins must be loaded in the Capfile to initialize properly.
MESSAGE
# This will raise a frozen object error
super(*args, &block)
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems