Class: Lono::Cfn::Preview
Instance Attribute Summary
Attributes inherited from Base
Instance Method Summary collapse
-
#change_set_name ⇒ Object
generates a change set name.
- #create_change_set(params) ⇒ Object
- #delete_change_set ⇒ Object
- #display_change_set ⇒ Object
- #execute_change_set ⇒ Object
- #preview_change_set(params) ⇒ Object
-
#run ⇒ Object
Override run from Base superclass, the run method is different enough with Preview.
Methods inherited from Base
#capabilities, #check_files, #check_for_errors, #command_with_iam, #convention_path, #derandomize, #detect_format, #exist_unless_updatable, #generate_all, #generate_params, #generate_templates, #get_source_path, #initialize, #prompt_for_iam, #quit, #randomize, #randomize_stack_name?, #stack_status, #upload_templates
Methods included from Util
Methods included from AwsServices
#cfn, #stack_exists?, #testing_update?
Constructor Details
This class inherits a constructor from Lono::Cfn::Base
Instance Method Details
#change_set_name ⇒ Object
generates a change set name
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# File 'lib/lono/cfn/preview.rb', line 86 def change_set_name @change_set_name ||= "changeset-#{Time.now.strftime("%Y%d%m%H%M%S")}" end |
#create_change_set(params) ⇒ Object
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# File 'lib/lono/cfn/preview.rb', line 18 def create_change_set(params) unless stack_exists?(@stack_name) puts "WARN: Cannot create a change set for the stack because the #{@stack_name} does not exists.".colorize(:yellow) return false end exist_unless_updatable(stack_status(@stack_name)) template_body = IO.read(@template_path) begin cfn.create_change_set( change_set_name: change_set_name, stack_name: @stack_name, template_body: template_body, parameters: params, capabilities: capabilities, # ["CAPABILITY_IAM", "CAPABILITY_NAMED_IAM"] ) rescue Aws::CloudFormation::Errors::ValidationError => e if e. =~ /^Parameters: / puts "Error creating CloudFormation preview because invalid CloudFormation parameters. Full error message:".colorize(:red) puts e. quit(1) else raise end end true end |
#delete_change_set ⇒ Object
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# File 'lib/lono/cfn/preview.rb', line 71 def delete_change_set cfn.delete_change_set( change_set_name: change_set_name, stack_name: @stack_name ) end |
#display_change_set ⇒ Object
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# File 'lib/lono/cfn/preview.rb', line 46 def display_change_set print "Generating CloudFormation Change Set for preview.." change_set = describe_change_set until change_set_finished?(change_set) do change_set = describe_change_set sleep 1 print '.' end puts case change_set.status when "CREATE_COMPLETE" puts "CloudFormation preview for '#{@stack_name}' stack update. Changes:" change_set.changes.each do |change| display_change(change) end when "FAILED" puts "Fail to create a CloudFormation preview for '#{@stack_name}' stack update. Reason:".colorize(:red) puts change_set.status_reason quit(1) else raise "hell: never come here" end end |
#execute_change_set ⇒ Object
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# File 'lib/lono/cfn/preview.rb', line 78 def execute_change_set cfn.execute_change_set( change_set_name: change_set_name, stack_name: @stack_name ) end |
#preview_change_set(params) ⇒ Object
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# File 'lib/lono/cfn/preview.rb', line 13 def preview_change_set(params) success = create_change_set(params) display_change_set if success end |
#run ⇒ Object
Override run from Base superclass, the run method is different enough with Preview
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# File 'lib/lono/cfn/preview.rb', line 3 def run if @options[:noop] puts "NOOP CloudFormation preview for #{@stack_name} update" else params = generate_all success = preview_change_set(params) delete_change_set if success && !@options[:keep] # Clean up and delete the change set end end |