Class: Sfn::Command::Update

Inherits:
Sfn::Command
  • Object
show all
Includes:
Sfn::CommandModule::Base, Sfn::CommandModule::Planning, Sfn::CommandModule::Stack, Sfn::CommandModule::Template
Defined in:
lib/sfn/command/update.rb

Overview

Update command

Constant Summary

Constants included from Sfn::CommandModule::Template

Sfn::CommandModule::Template::DEFAULT_PROVIDER_NAME, Sfn::CommandModule::Template::MAX_PARAMETER_ATTEMPTS, Sfn::CommandModule::Template::TEMPLATE_IGNORE_DIRECTORIES

Constants inherited from Sfn::Command

CONFIG_BASE_NAME, VALID_CONFIG_EXTENSIONS

Instance Method Summary collapse

Methods included from Sfn::CommandModule::Planning

#build_planner, #display_plan_information, #print_plan_items, #print_plan_result

Methods included from Sfn::CommandModule::Stack

included

Methods included from Sfn::CommandModule::Template

included

Methods included from Sfn::CommandModule::Base

included

Methods inherited from Sfn::Command

#config, #initialize

Methods included from Sfn::CommandModule::Callbacks

#api_action!, #callbacks_for, #run_callbacks_for

Constructor Details

This class inherits a constructor from Sfn::Command

Instance Method Details

#execute! ⇒ Object

Run the stack update command



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# File 'lib/sfn/command/update.rb', line 13

def execute!
  name_required!
  name = name_args.first

  stack_info = "#{ui.color("Name:", :bold)} #{name}"
  begin
    stack = provider.stacks.get(name)
  rescue Miasma::Error::ApiError::RequestError
    stack = nil
  end

  config[:compile_parameters] ||= Smash.new

  if config[:file]
    s_name = [name]

    c_setter = lambda do |c_stack|
      if c_stack.outputs
        compile_params = c_stack.outputs.detect do |output|
          output.key == "CompileState"
        end
      end
      if compile_params
        compile_params = MultiJson.load(compile_params.value)
        c_current = config[:compile_parameters].fetch(s_name.join("__"), Smash.new)
        config[:compile_parameters][s_name.join("__")] = compile_params.merge(c_current)
      end
      c_stack.nested_stacks(false).each do |n_stack|
        s_name.push(n_stack.data.fetch(:logical_id, n_stack.name))
        c_setter.call(n_stack)
        s_name.pop
      end
    end

    if stack
      c_setter.call(stack)
    end

    ui.debug "Compile parameters - #{config[:compile_parameters]}"
    file = load_template_file(:stack => stack)
    stack_info << " #{ui.color("Path:", :bold)} #{config[:file]}"
  else
    file = stack.template.dup if config[:plan]
  end

  unless stack
    ui.fatal "Failed to locate requested stack: #{ui.color(name, :red, :bold)}"
    raise "Failed to locate stack: #{name}"
  end

  unless config[:print_only]
    ui.info "#{ui.color("SparkleFormation:", :bold)} #{ui.color("update", :green)}"
  end

  unless file
    if config[:template]
      file = config[:template]
      stack_info << " #{ui.color("(template provided)", :green)}"
    else
      stack_info << " #{ui.color("(no template update)", :yellow)}"
    end
  end
  unless config[:print_only]
    ui.info "  -> #{stack_info}"
  end
  if file
    if config[:print_only]
      ui.puts format_json(parameter_scrub!(template_content(file)))
      return
    end

    original_template = stack.template
    original_parameters = stack.parameters

    apply_stacks!(stack)

    populate_parameters!(file, :current_parameters => stack.root_parameters)
    update_template = stack.template

    if config[:plan]
      begin
        stack.template = original_template
        stack.parameters = original_parameters
        plan = build_planner(stack)
        if plan
          result = plan.generate_plan(
            file.respond_to?(:dump) ? file.dump : file,
            config_root_parameters
          )
          display_plan_information(result)
        end
      rescue => e
        unless e.message.include?("Confirmation declined")
          ui.error "Unexpected error when generating plan information: #{e.class} - #{e}"
          ui.debug "#{e.class}: #{e}\n#{e.backtrace.join("\n")}"
          ui.confirm "Continue with stack update?" unless config[:plan_only]
        else
          raise
        end
      end
      if config[:plan_only]
        ui.info "Plan only mode requested. Exiting."
        return
      end
    end
    stack.parameters = config_root_parameters

    if config[:upload_root_template]
      upload_result = store_template(name, file, Smash.new)
      stack.template_url = upload_result[:url]
    else
      stack.template = parameter_scrub!(template_content(file, :scrub))
    end
  else
    apply_stacks!(stack)
    original_parameters = stack.parameters
    populate_parameters!(stack.template, :current_parameters => stack.root_parameters)
    stack.parameters = config_root_parameters
  end

  # Set options defined within config into stack instance for update request
  if config[:merge_api_options]
    config.fetch(:options, Smash.new).each_pair do |key, value|
      if stack.respond_to?("#{key}=")
        stack.send("#{key}=", value)
      end
    end
  end

  begin
    api_action!(:api_stack => stack) do
      stack.save
      if config[:poll]
        poll_stack(stack.name)
        if stack.reload.state == :update_complete
          ui.info "Stack update complete: #{ui.color("SUCCESS", :green)}"
          namespace.const_get(:Describe).new({:outputs => true}, [name]).execute!
        else
          ui.fatal "Update of stack #{ui.color(name, :bold)}: #{ui.color("FAILED", :red, :bold)}"
          raise "Stack did not reach a successful update completion state."
        end
      else
        ui.warn "Stack state polling has been disabled."
        ui.info "Stack update initialized for #{ui.color(name, :green)}"
      end
    end
  rescue Miasma::Error::ApiError::RequestError => e
    if e.message.downcase.include?("no updates")
      ui.warn "No updates detected for stack (#{stack.name})"
    else
      raise
    end
  end
end