Class: Jets::Cfn::Download

Inherits:
Object
  • Object
show all
Includes:
AwsServices
Defined in:
lib/jets/cfn/download.rb

Instance Method Summary collapse

Methods included from AwsServices

#apigateway, #aws_lambda, #aws_options, #cfn, #dynamodb, #logs, #s3, #s3_resource, #sns, #sqs, #sts

Methods included from AwsServices::StackStatus

#lookup, #stack_exists?, #stack_in_progress?

Methods included from AwsServices::GlobalMemoist

included

Instance Method Details

#bucket_name ⇒ Object 



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# File 'lib/jets/cfn/download.rb', line 35

def bucket_name
  Jets.s3_bucket
end

#download_templates(version) ⇒ Object 



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# File 'lib/jets/cfn/download.rb', line 5

def download_templates(version)
  bucket = s3_resource.bucket(bucket_name)
  unless bucket.exists?
    puts "ERROR: The bucket #{bucket_name} does not exist.".color(:red)
    exit 1
  end

  # Cleanup templates folder
  FileUtils.rm_rf(Jets::Names.templates_folder)
  FileUtils.mkdir_p(Jets::Names.templates_folder)

  key_path = "jets/cfn-templates/versions/#{version}"
  objects = bucket.objects(prefix: key_path)
  if objects.count > 0
    objects.each do |object|
      file_name = "#{Jets::Names.templates_folder}/#{object.key.split('/').last}"
      object.get(response_target: file_name)
      puts "Downloaded #{file_name} from s3://#{bucket_name}/#{object.key}" if ENV['JETS_DEBUG']
    end
  else
    puts "ERROR: Cannot rollback to this version because the CloudFormation templates are not available.".color(:red)
    puts <<~EOL
      This can happen the app was deployed before Jets Pro features were enabled,
      or if the stack was delete and redeployed. Deleted stacks history are not
      rollbackable because their original s3 bucket is deleted.
    EOL
    exit 1
  end
end