Module: Cody::AwsServices::Helpers

Included in:
Cody::AwsServices
Defined in:
lib/cody/aws_services/helpers.rb

Instance Method Summary collapse

Instance Method Details

#are_you_sure?(stack_name, action) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cody/aws_services/helpers.rb', line 65

def are_you_sure?(stack_name, action)
  if @options[:yes]
    sure = 'y'
  else
    message = case action
    when :update
      "Are you sure you want to want to update the #{stack_name.color(:green)} stack with the changes? (y/N)"
    when :delete
      "Are you sure you want to want to delete the #{stack_name.color(:green)} stack? (y/N)"
    end
    puts message
    sure = $stdin.gets
  end

  unless sure =~ /^y/
    puts "Whew! Exiting without running #{action}."
    exit 0
  end
end

#find_stack(stack_name) ⇒ Object 



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# File 'lib/cody/aws_services/helpers.rb', line 3

def find_stack(stack_name)
  return if ENV['TEST']
  resp = cfn.describe_stacks(stack_name: stack_name)
  resp.stacks.first
rescue Aws::CloudFormation::Errors::ValidationError => e
  # example: Stack with id demo-web does not exist
  if e.message =~ /Stack with/ && e.message =~ /does not exist/
    nil
  else
    raise
  end
end

#inferred_project_name ⇒ Object 



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# File 'lib/cody/aws_services/helpers.rb', line 47

def inferred_project_name
  # Essentially the project's parent folder
  File.basename(Dir.pwd).gsub('_','-').gsub(/\.+/,'-').gsub(/[^0-9a-zA-Z,-]/, '')
end

#inferred_stack_name(project_name) ⇒ Object

Examples:

myapp-ci-deploy # with Settings stack_naming append_env set to false.
myapp-ci-deploy-development
myapp-ci-deploy-development-2



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# File 'lib/cody/aws_services/helpers.rb', line 58

def inferred_stack_name(project_name)
  append_stack_name = Cody.settings.dig(:stack_naming, :append_stack_name) || "cody"
  items = [project_name, @options[:type], Cody.extra, append_stack_name]
  items.insert(3, Cody.env) if Cody.settings.dig(:stack_naming, :append_env)
  items.reject(&:blank?).reject {|i| i == false}.compact.join("-")
end

#normalize_stack_name(name) ⇒ Object 



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# File 'lib/cody/aws_services/helpers.rb', line 85

def normalize_stack_name(name)
  name.gsub('_','-') # cloudformation stack names dont allow _
end

#project_name_convention(name_base) ⇒ Object 



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# File 'lib/cody/aws_services/helpers.rb', line 41

def project_name_convention(name_base)
  items = [@project_name, @options[:type], Cody.extra]
  items.insert(2, Cody.env) if Cody.settings.dig(:stack_naming, :append_env)
  items.reject(&:blank?).compact.join("-")
end

#stack_exists?(stack_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cody/aws_services/helpers.rb', line 16

def stack_exists?(stack_name)
  return false if ENV['TEST']

  exist = nil
  begin
    # When the stack does not exist an exception is raised. Example:
    # Aws::CloudFormation::Errors::ValidationError: Stack with id blah does not exist
    cfn.describe_stacks(stack_name: stack_name)
    exist = true
  rescue Aws::CloudFormation::Errors::ValidationError => e
    if e.message =~ /does not exist/
      exist = false
    elsif e.message.include?("'stackName' failed to satisfy constraint")
      # Example of e.message when describe_stack with invalid stack name
      # "1 validation error detected: Value 'instance_and_route53' at 'stackName' failed to satisfy constraint: Member must satisfy regular expression pattern: [a-zA-Z][-a-zA-Z0-9]*|arn:[-a-zA-Z0-9:/._+]*"
      puts "Invalid stack name: #{stack_name}"
      puts "Full error message: #{e.message}"
      exit 1
    else
      raise # re-raise exception  because unsure what other errors can happen
    end
  end
  exist
end