Class: Iota::CLI::Rollback

Inherits:
Object
  • Object
show all
Defined in:
lib/iota/cli/rollback.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options, environment, thor) ⇒ Rollback

Returns a new instance of Rollback.



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# File 'lib/iota/cli/rollback.rb', line 7

def initialize(options, environment, thor)
  @options = options
  @environment = environment
  @thor = thor
  @path = options[:path] || '.'
end

Instance Attribute Details

#environment ⇒ Object (readonly)

Returns the value of attribute environment.



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# File 'lib/iota/cli/rollback.rb', line 5

def environment
  @environment
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/iota/cli/rollback.rb', line 5

def options
  @options
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/iota/cli/rollback.rb', line 5

def path
  @path
end

#thor ⇒ Object (readonly)

Returns the value of attribute thor.



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# File 'lib/iota/cli/rollback.rb', line 5

def thor
  @thor
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/iota/cli/rollback.rb', line 14

def run
  unless File.exists?('./iota.conf')
    thor.say("Config file ('./iota.conf') is missing.", :red)
    return
  end

  thor.say("Loading configuration.", :yellow)
  config = YAML.load_file('./iota.conf')
  thor.say("Done.", :blue)

  unless Iota::Function::ENVIRONMENT_ALIAS_NAME_MAP.keys.include?(environment)
    thor.say("Invalid environment #{environment}. \
Please specify either 'production' or 'development'.", :red)
    return
  end

  # TODO: not found
  function_name = config['function_name']


  function = Iota::Function.new(function_name, path)
  if function.exists?
    aliases = function.list_aliases

    current_version_alias_name = Iota::Function::ENVIRONMENT_ALIAS_NAME_MAP[environment]
    last_version_alias_name = current_version_alias_name +
      Iota::Function::LAST_VERSION_SUFFIX

    last_version_alias = aliases.select{|a| a.name == last_version_alias_name}.first
    current_version_alias = aliases.select{|a| a.name == current_version_alias_name}.first

    # last -> current, current -> last
    unless last_version_alias.nil? || current_version_alias.nil?
      if last_version_alias.function_version == current_version_alias.function_version
        thor.say("Can't rollback before deploy.", :yellow)
        return
      else
        thor.say("Updating alias", :yellow)
        function.update_alias(current_version_alias_name, last_version_alias.function_version)
        thor.say("Version is now at #{last_version_alias.function_version}.", :yellow)
        thor.say("Done.", :blue)
      end
    end
  else
    thor.say("Function #{function_name} doesn't seem to be exists.", :yellow)
  end
end