Class: Chef::Knife::CloudformationDestroy

Inherits:
Chef::Knife
  • Object
show all
Includes:
KnifeCloudformation::Knife::Base
Defined in:
lib/chef/knife/cloudformation_destroy.rb

Overview

Cloudformation destroy command

Instance Method Summary collapse

Methods included from KnifeCloudformation::Knife::Base

included

Instance Method Details

#_run ⇒ Object

Run the stack destruction action



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# File 'lib/chef/knife/cloudformation_destroy.rb', line 21

def _run
  stacks = name_args.sort
  plural = 's' if stacks.size > 1
  globs = stacks.find_all do |s|
    s !~ /^[a-zA-Z0-9-]+$/
  end
  unless(globs.empty?)
    glob_stacks = provider.connection.stacks.all.find_all do |remote_stack|
      globs.detect do |glob|
        File.fnmatch(glob, remote_stack.name)
      end
    end
    stacks += glob_stacks.map(&:name)
    stacks -= globs
    stacks.sort!
  end
  ui.warn "Destroying Cloud Formation#{plural}: #{ui.color(stacks.join(', '), :bold)}"
  ui.confirm "Destroy formation#{plural}"
  stacks.each do |stack_name|
    stack = provider.connection.stacks.get(stack_name)
    if(stack)
      nested_stack_cleanup!(stack)
      stack.destroy
    else
      ui.warn "Failed to locate requested stack: #{ui.color(stack_name, :bold)}"
    end
  end
  if(config[:polling])
    if(stacks.size == 1)
      poll_stack(stacks.first)
    else
      ui.error "Stack polling is not available when multiple stack deletion is requested!"
    end
  end
  ui.info "  -> Destroyed Cloud Formation#{plural}: #{ui.color(stacks.join(', '), :bold, :red)}"
end

#nested_stack_cleanup!(stack) ⇒ Object

Cleanup persisted templates if nested stack resources are included



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# File 'lib/chef/knife/cloudformation_destroy.rb', line 59

def nested_stack_cleanup!(stack)
  nest_stacks = stack.template.fetch('Resources', {}).values.find_all do |resource|
    resource['Type'] == 'AWS::CloudFormation::Stack'
  end.each do |resource|
    url = resource['Properties']['TemplateURL']
    if(url)
      _, bucket_name, path = URI.parse(url).path.split('/', 3)
      bucket = provider.connection.api_for(:storage).buckets.get(bucket_name)
      if(bucket)
        file = bucket.files.get(path)
        if(file)
          file.destroy
          ui.info "Deleted nested stack template! (Bucket: #{bucket_name} Template: #{path})"
        else
          ui.warn "Failed to locate template file within bucket for deletion! (#{path})"
        end
      else
        ui.warn "Failed to locate bucket containing template file for deletion! (#{bucket_name})"
      end
    end
  end
end