Class: CfnDSLHelper::Cli

Inherits:
Object
  • Object
show all
Defined in:
lib/cfndslhelper/cli.rb

Instance Method Summary collapse

Constructor Details

#initialize(argv, stdin = STDIN, stdout = STDOUT, stderr = STDERR, kernel = Kernel) ⇒ Cli

Returns a new instance of Cli.



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# File 'lib/cfndslhelper/cli.rb', line 10

def initialize(argv, stdin=STDIN, stdout=STDOUT, stderr=STDERR, kernel=Kernel)
  @argv, @stdin, @stdout, @stderr, @kernel = argv, stdin, stdout, stderr, kernel
end

Instance Method Details

#create ⇒ Object

docs.aws.amazon.com/sdkforruby/api/Aws/CloudFormation/Client.html#create_stack-instance_method



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# File 'lib/cfndslhelper/cli.rb', line 181

def create
  puts @config['region']
  cfn = Aws::CloudFormation::Client.new(region: @config['region'])

  parameters = get_parameters_to_array
  puts parameters

  stack = {
    stack_name: @config[:stack_name],
    template_url: template_url,
    parameters: parameters,
    notification_arns: @config['notification_arns'],
    capabilities: ['CAPABILITY_IAM', 'CAPABILITY_NAMED_IAM'],
    tags: []
  }

  if @config[:set_stack_as_name_tag]
    stack[:tags] << { key: 'Name', value: @config[:stack_name]}
  end

  puts stack

  resp = cfn.create_stack(stack)

  puts resp

  stack_wait :stack_create_complete, {stack_name: @config[:stack_name] }
end

#delete ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 210

def delete
  cfn = Aws::CloudFormation::Client.new(region: @config['region'])
  resp = cfn.delete_stack({stack_name: @config[:stack_name]})
  puts resp

  stack_wait :stack_delete_complete, {stack_name: @config[:stack_name] }
end

#execute! ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 14

def execute!
  instruction = @argv.first
  puts "#CfnDSLHelperVERSION:#{CfnDSLHelper::VERSION}"
  get_config unless instruction == 'parameter-update'

  if instruction == 'generate'
    generate
  end

  if instruction == 'validate'
    validate
  end

  if instruction == 'upload'
    upload
  end

  if instruction == 'create'
    create
  end

  if instruction == 'delete'
    delete
  end

  if instruction == 'update'
    update
  end

  if instruction == 'show-events'
    show_events
  end

  if instruction == 'parameter-update'
    parameter_only_update
  end
end

#generate ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 122

def generate
  FileUtils.rm_rf Dir.glob("#{@base_dir}/output/**/*.json")
  FileUtils.rm_rf Dir.glob("#{@base_dir}/output/**/*.yml")

  if File.directory? "#{@base_dir}/raw-imports"
    FileUtils.cp_r Dir.glob("#{@base_dir}/raw-imports/**/*.json"), "#{@base_dir}/output/"
    FileUtils.cp_r Dir.glob("#{@base_dir}/raw-imports/**/*.yml"),  "#{@base_dir}/output/"
  end

  @cfn_templates.each do |cfn_template|
    puts cfn_template
    filename = cfn_template
    template = cfn_template.gsub(/.*\//, '')
    output = template.gsub(/.rb$/,'.json')
    puts '#BEGIN MODEL GENERATE'
    model = CfnDsl.eval_file_with_extras(filename, @extras, verbose)

    File.open("#{@base_dir}/output/#{output}", "w") do | f |
      f.write(JSON.pretty_generate(model))
    end
  end
end

#get_config ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 52

def get_config
  @base_dir = ENV['CFN_BASE_DIR'] || Dir.pwd

  puts @base_dir

  @config = {}

  @extras = []

  config_location = ENV['CFN_CONFIG_LOCATION'] || "#{@base_dir}/config/project_config.yml"

  notifications_location = ENV['CFN_NOTIFICATIONS_LOCATION'] || "#{@base_dir}/config/notifications.yml"

  @config = YAML.load_file(config_location)

  if File.file? notifications_location
    @config.merge!(YAML.load_file(notifications_location))
  end

  parse_args

  if ENV['CFN_VERSION']
    @config['version'] = ENV['CFN_VERSION']
    File.write("#{@base_dir}/config/version.yml", "version: \"#{ENV['CFN_VERSION']}\"")
  end

  @config['region'] = @config['region'] || 'ap-southeast-2'

  %w[version pplication_name project].each do | requirement |
    raise "No #{requirement} specified" unless @config[requirement]
  end

  @cfn_templates = Dir["#{@base_dir}/cfndsl/**/*.rb"]

  if File.directory? "#{@base_dir}/cfndsl-imports"
    @cfn_templates += Dir["#{@base_dir}/cfndsl-imports/**/*.rb"]
  end

  Dir["#{@base_dir}/config/*.yml"].each do | extra |
    @extras << [:yaml, extra]
  end

  Dir["#{@base_dir}/config/*.rb"].each do | extra |
    @extras << [:ruby, extra]
  end

  if ENV['STACK_NAME']
    @config['stack_name'] = @config['stack_name'] || ENV['STACK_NAME']
  end

  puts @config
end

#get_config_no_files ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 105

def get_config_no_files
  @config = {}
  parse_args
  @config['stack_name'] = @config['stack_name'] || ENV['STACK_NAME']
  @config['region'] = @config['region'] ||  ENV['AWS_DEFAULT_REGION'] || 'ap-southeast-2'
  puts @config
end

#get_parameters_to_array ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 171

def get_parameters_to_array
  parameters = []
  if @config[:parameters_given]
    @config[:parameters].split(',').each { | p | interim = p.split('='); parameters << { parameter_key: interim[0], parameter_value: interim[1] } }
  end

  parameters
end

#get_update_parameters(stack) ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 218

def get_update_parameters(stack)
  update_parameters = []
  stack.parameters.each { |sp| update_parameters << sp.to_hash }

  override_parameters = get_parameters_to_array
  puts override_parameters

  override_parameters.each do | parameter |
    puts parameter
    if update_parameters.detect { | up | up[:parameter_key] == parameter[:parameter_key] }
      update_parameters.each { | up | up[:parameter_value] = parameter[:parameter_value] if up[:parameter_key] == parameter[:parameter_key] }
    else
      puts "#{parameter} not found in current parameters for stack"
      update_parameters << { parameter_key: parameter[:parameter_key], parameter_value: parameter[:parameter_value] }
    end
  end

  update_parameters.each { |x| p x }
end

#parameter_only_update ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 238

def parameter_only_update
  get_config_no_files
  cfn = Aws::CloudFormation::Client.new(region: @config['region'])

  stack = cfn.describe_stacks({stack_name: @config[:stack_name]}).stacks[0]
  update_parameters = get_update_parameters(stack)

  puts update_parameters

  update_hash = {
    stack_name: @config[:stack_name],
    parameters:  update_parameters,
    notification_arns: @config['notification_arns'],
    use_previous_template: true,
    capabilities: ["CAPABILITY_NAMED_IAM"],
    tags: []
  }

  if @config[:set_stack_as_name_tag]
    update_hash[:tags] << { key: 'Name', value: @config[:stack_name]}
  end

  run_update update_hash
end

#parse_args ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 113

def parse_args
  options = Trollop::options do
    opt :stack_name, "whats the name of the stack??", type: String, short: "-s"
    opt :parameters, "specify some parameters for create-ing or overriding k=v,k1=v1", type: String, short: "-p"
  end

  @config = options.merge @config
end

#run_update(update_hash) ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 287

def run_update(update_hash)
  cfn = Aws::CloudFormation::Client.new(region: @config['region'])
  puts "debug update_hash"
  puts update_hash

  resp = cfn.update_stack(update_hash)
  puts resp

  puts 'wait until complete...'
  stack_wait :stack_update_complete, {stack_name: @config[:stack_name] }
end

#show_events ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 311

def show_events
  cfn = Aws::CloudFormation::Client.new(region: @config['region'])
  resp = cfn.describe_stack_events(stack_name: @config[:stack_name])
  resp.stack_events.reverse_each do | e |
    puts e.stack_id + ";;;" + e.event_id + ";;;" + e.stack_name + ";;;" + e.logical_resource_id #=> String
    puts e.physical_resource_id #=> String
    puts e.resource_type #=> String
    puts e.timestamp #=> Time
    puts e.resource_status #=> String, one of "CREATE_IN_PROGRESS", "CREATE_FAILED", "CREATE_COMPLETE", "DELETE_IN_PROGRESS", "DELETE_FAILED", "DELETE_COMPLETE", "DELETE_SKIPPED", "UPDATE_IN_PROGRESS", "UPDATE_FAILED", "UPDATE_COMPLETE"
    puts e.resource_status_reason #=> String
    puts e.resource_properties #=> String
  end
end

#stack_wait(wait, name) ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 325

def stack_wait(wait, name)
  cfn = Aws::CloudFormation::Client.new(region: @config['region'])
  begin
    cfn.wait_until wait, name
  rescue
    raise "error doing #{wait} for #{name}"
  end
end

#template_url ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 299

def template_url
  "https://s3-#{@config['source_region']}.amazonaws.com/#{@config['source_bucket']}/cloudformation/#{@config['project']}/#{@config['application_name']}/#{@config['version']}/master.json"
  # FIXME: make template url an actual template itself as per below
  # @config = {:version=>"99", :cloudformation_bucket=>"my_cool_bucket", :project=>"the-project", :application=>"firefly"}
  # url = "http://%{cloudformation_bucket}/cloudformation/%{project}/%{application}/%{version}/"
  # url % @config
end

#update ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 263

def update
  cfn = Aws::CloudFormation::Client.new(region: @config['region'])

  stack = cfn.describe_stacks({stack_name: @config[:stack_name]}).stacks[0]
  update_parameters = get_update_parameters(stack)

  puts update_parameters

  update_hash = {
    stack_name: @config[:stack_name],
    template_url: template_url,
    parameters:  update_parameters,
    notification_arns: @config['notification_arns'],
    capabilities: ["CAPABILITY_NAMED_IAM"],
    tags: []
  }

  if @config[:set_stack_as_name_tag]
    update_hash[:tags] << { key: 'Name', value: @config[:stack_name]}
  end

  run_update update_hash
end

#upload ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 159

def upload
  s3 = Aws::S3::Resource.new(region: @config['source_region'])
  Dir.glob("#{@base_dir}/output/*.json").each do | template |
    puts "will upload #{template}"
    key = template.gsub(/.*\//, '')
    key = "cloudformation/#{@config['project']}/#{@config['application_name']}/#{@config['version']}/#{key}"
    puts "will upload #{template} to #{key}"
    obj = s3.bucket(@config['source_bucket']).object(key)
    obj.upload_file(template)
  end
end

#validate ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 145

def validate
  cfn = Aws::CloudFormation::Client.new(region: @config['region'])

  Dir.glob("#{@base_dir}/output/*.json").each do | template |
    puts "will validate #{template}"
    body = File.read(template)

    resp = cfn.validate_template(
      template_body: body
    )
    puts resp
  end
end

#verbose ⇒ Object 



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# File 'lib/cfndslhelper/cli.rb', line 307

def verbose
  STDERR
end