Module: Jets::AwsServices::StackStatus

Included in:
Jets::AwsServices
Defined in:
lib/jets/aws_services/stack_status.rb

Constant Summary collapse

@@stack_exists_cache =

Only cache if it is true because the initial deploy checks live status until a stack exists.

[]

Instance Method Summary collapse

Instance Method Details

#output_value(outputs, key) ⇒ Object 



33
34
35
36
 
# File 'lib/jets/aws_services/stack_status.rb', line 33

def output_value(outputs, key)
  out = outputs.find { |o| o.output_key == key }
  out&.output_value
end

#stack_exists?(stack_name) ⇒ Boolean

helps with CloudFormation rate limit

Returns:

  • (Boolean) 


5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/jets/aws_services/stack_status.rb', line 5

def stack_exists?(stack_name)
  return false if Jets.env.test?
  return true if ENV["JETS_NO_INTERNET"]
  return true if @@stack_exists_cache.include?(stack_name)

  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)
    @@stack_exists_cache << stack_name
    exist = true
  rescue Aws::CloudFormation::Errors::ValidationError => e
    if /does not exist/.match?(e.message)
      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:/._+]*"
      log.info "Invalid stack name: #{stack_name}"
      log.info "Full error message: #{e.message}"
      exit 1
    else
      raise # re-raise exception  because unsure what other errors can happen
    end
  end
  exist
end