Sha256: 296c0231a2e6b34a518c80cfcb472f34e34938997db8bac8a7aac97e9c168639
Contents?: true
Size: 1.25 KB
Versions: 16
Compression:
Stored size: 1.25 KB
Contents
require "aws-sdk"
module Lono::Cfn::AwsServices
def cfn
@cfn ||= Aws::CloudFormation::Client.new
end
def stack_exists?(stack_name)
return true if testing_update?
return false if @options[:noop]
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
resp = 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
def testing_update?
ENV['TEST'] && self.class.name == "LonoCfn::Update"
end
end
Version data entries
16 entries across 16 versions & 1 rubygems