Class: CfnGuardian::Cli

Inherits:
Thor
  • Object
show all
Includes:
Logging
Defined in:
lib/cfnguardian.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Logging

colors, included, logger, #logger, logger=

Class Method Details

.exit_on_failure? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cfnguardian.rb', line 20

def self.exit_on_failure?
  true
end

Instance Method Details

#__print_version ⇒ Object 



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# File 'lib/cfnguardian.rb', line 26

def __print_version
  puts CfnGuardian::VERSION
end

#bulk_deploy ⇒ Object 



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# File 'lib/cfnguardian.rb', line 144

def bulk_deploy
  set_log_level(options[:debug])
  
  set_region(options[:region],true)
  s3 = CfnGuardian::S3.new(options[:bucket],options[:path])
  s3.create_bucket_if_not_exists
  
  clean_out_directory()

  template_file_suffix = 'compiled.yaml'

  compiled = []

  options[:config].each do |config|
    config_basename = File.basename(config, ".alarms.yaml")
    guardian_name = config_basename == "alarms.yaml" ? "" : "-#{config_basename}"
    template_file = "guardian#{guardian_name}.#{template_file_suffix}"

    compiler = CfnGuardian::Compile.new(config, options[:check_resources_exist])
    compiler.get_resources
    compiler.compile_templates(template_file)
    logger.info "compiled template to out/#{template_file} from yaml config #{config}"
    parameters = compiler.load_parameters(options)

    compiled << {template_file: template_file, parameters: parameters}
    logger.debug("template file #{template_file} generated with parameters: #{parameters}")
  end

  validator = CfnGuardian::Validate.new(s3.bucket)
  validator.validate

  changesets = []

  compiled.each do |stack|
    stack_name = stack[:template_file].gsub(".#{template_file_suffix}", "")
    deployer = CfnGuardian::Deploy.new(options,s3.bucket,stack[:parameters],stack[:template_file],stack_name)
    deployer.upload_templates
    logger.info("creating changeset for stack #{stack_name}")
    change_set, change_set_type = deployer.create_change_set()
    changesets << {deployer: deployer, id: change_set.id, type: change_set_type}
  end

  changesets_executed = []
  changesets.each do |changeset|
    begin 
      changeset[:deployer].wait_for_changeset(changeset[:id])
    rescue CfnGuardian::EmptyChangeSetError => e
      if options[:fail_empty_change_set]
        raise e
      else
        logger.info e.message
        next
      end
    end
    logger.info("executing changeset #{changeset[:id]}")
    changeset[:deployer].execute_change_set(changeset[:id])
    logger.info("waiting for changeset #{changeset[:id]} to complete")
    changeset[:deployer].wait_for_execute(changeset[:type])
  end
end

#compile ⇒ Object 



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# File 'lib/cfnguardian.rb', line 50

def compile
  set_log_level(options[:debug])
  
  set_region(options[:region],options[:validate])
  s3 = CfnGuardian::S3.new(options[:bucket],options[:path])

  clean_out_directory()

  compiler = CfnGuardian::Compile.new(options[:config], options[:check_resources_exist])
  compiler.get_resources
  compiler.compile_templates(options[:template_file])
  logger.info "Cloudformation templates compiled successfully in out/ directory"
  if options[:validate]
    s3.create_bucket_if_not_exists()
    validator = CfnGuardian::Validate.new(s3.bucket)
    validator.validate
  end

  logger.warn "AWS cloudwatch alarms defined in the templates will cost roughly $#{'%.2f' % compiler.cost} per month"

  if options[:template_config]
    logger.info "Generating a AWS CodePipeline template configuration file template-config.guardian.json"
    parameters = compiler.load_parameters(options)
    compiler.genrate_template_config(parameters)
  end
end

#deploy ⇒ Object 



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# File 'lib/cfnguardian.rb', line 98

def deploy
  set_log_level(options[:debug])
  
  set_region(options[:region],true)
  s3 = CfnGuardian::S3.new(options[:bucket],options[:path])
  
  clean_out_directory()

  compiler = CfnGuardian::Compile.new(options[:config], options[:check_resources_exist])
  compiler.get_resources
  compiler.compile_templates(options[:template_file])
  parameters = compiler.load_parameters(options)
  logger.info "Cloudformation templates compiled successfully in out/ directory"

  s3.create_bucket_if_not_exists
  validator = CfnGuardian::Validate.new(s3.bucket)
  validator.validate
  
  deployer = CfnGuardian::Deploy.new(options,s3.bucket,parameters,options[:template_file],options[:stack_name])
  deployer.upload_templates
  change_set, change_set_type = deployer.create_change_set()
  deployer.wait_for_changeset(change_set.id)
  deployer.execute_change_set(change_set.id)
  deployer.wait_for_execute(change_set_type)
end

#disable_alarms ⇒ Object 



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# File 'lib/cfnguardian.rb', line 503

def disable_alarms
  set_region(options[:region],true)
  
  alarm_names = CfnGuardian::CloudWatch.get_alarm_names(options[:group],options[:alarm_prefix])
  CfnGuardian::CloudWatch.disable_alarms(alarm_names)
  
  logger.info "Disabled #{alarm_names.length} alarms"
end

#enable_alarms ⇒ Object 



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# File 'lib/cfnguardian.rb', line 522

def enable_alarms
  set_region(options[:region],true)
  
  alarm_names = CfnGuardian::CloudWatch.get_alarm_names(options[:group],options[:alarm_prefix])
  CfnGuardian::CloudWatch.enable_alarms(alarm_names)
  
  logger.info "#{alarm_names.length} alarms enabled"
end

#show_alarms ⇒ Object 



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# File 'lib/cfnguardian.rb', line 295

def show_alarms
  set_log_level(options[:debug])
  set_region(options[:region],options[:compare])
  
  if options[:config]
    config_file = options[:config]
  elsif options[:defaults]
    config_file = default_config()
  else
    raise Thor::Error, 'one of `--config YAML` or `--defaults` must be supplied'
  end
  
  compiler = CfnGuardian::Compile.new(config_file)
  compiler.get_resources
  alarms = filter_compiled_alarms(compiler.alarms,options[:filter])

  if alarms.empty?
    raise Thor::Error, "No matches found" 
  end
  
  headings = ['Property', 'Config']
  formatter = CfnGuardian::DisplayFormatter.new(alarms)
  
  if options[:compare] && !options[:defaults]
    metric_alarms = CfnGuardian::CloudWatch.get_alarms_by_prefix(prefix: 'guardian')
    metric_alarms = CfnGuardian::CloudWatch.filter_alarms(filters: options[:filter], alarms: metric_alarms)

    formatted_alarms = formatter.compare_alarms(metric_alarms)
    headings.push('Deployed')
  else
    formatted_alarms = formatter.alarms()
  end

  if formatted_alarms.any?
    formatted_alarms.each do |fa|
      puts Terminal::Table.new( 
              :title => fa[:title], 
              :headings => headings, 
              :rows => fa[:rows])
    end
  else
    if options[:compare] && !options[:defaults]
      logger.info "No difference found between you config and alarms in deployed AWS"
    else
      logger.warn "No alarms found"
    end
  end
end

#show_config_history ⇒ Object 



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# File 'lib/cfnguardian.rb', line 442

def show_config_history
  set_region(options[:region],true)

  history = CfnGuardian::CodeCommit.new(options[:repository]).get_commit_history(options[:branch], options[:count])
  if history.any?
    puts Terminal::Table.new(
      :headings => history.first.keys.map{|h| h.to_s.to_heading}, 
      :rows => history.map(&:values))
  end
end

#show_drift ⇒ Object 



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# File 'lib/cfnguardian.rb', line 265

def show_drift
  set_region(options[:region],true)
  
  rows = []
  drift = CfnGuardian::Drift.new(options[:stack_name])
  nested_stacks = drift.find_nested_stacks
  nested_stacks.each do |stack|
    drift.detect_drift(stack)
    rows << drift.get_drift(stack)
  end
  
  if rows.any?
    puts Terminal::Table.new( 
            :title => "Guardian Alarm Drift".green, 
            :headings => ['Alarm Name', 'Property', 'Expected', 'Actual', 'Type'], 
            :rows => rows.flatten(1))
  end
end

#show_history ⇒ Object 



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# File 'lib/cfnguardian.rb', line 397

def show_history
  set_log_level(options[:debug])
  set_region(options[:region],true)
  
  if options[:alarm_names]
    metric_alarms = CfnGuardian::CloudWatch.get_alarms_by_name(alarm_names: options[:alarm_names], state: options[:state])
  else
    metric_alarms = CfnGuardian::CloudWatch.get_alarms_by_prefix(prefix: options[:alarm_prefix], state: options[:state])
  end

  metric_alarms = CfnGuardian::CloudWatch.filter_alarms(filters: options[:filter], alarms: metric_alarms)       
  
  case options[:type]
  when 'state'
    type = 'StateUpdate'
    headings = ['Date', 'Summary', 'Reason']
  when 'config'
    type = 'ConfigurationUpdate'
    headings = ['Date', 'Summary', 'Type']
  end
  
  formatter = CfnGuardian::DisplayFormatter.new()
  
  metric_alarms.each do |alarm|
    history = CfnGuardian::CloudWatch.get_alarm_history(alarm.alarm_name,type)
    rows = formatter.alarm_history(history,type)
    if rows.any?     
      puts Terminal::Table.new( 
              :title => alarm.alarm_name.green, 
              :headings => headings, 
              :rows => rows)
      puts "\n"
    end
  end
end

#show_pipeline ⇒ Object 



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# File 'lib/cfnguardian.rb', line 460

def show_pipeline
  set_region(options[:region],true)
  pipeline = CfnGuardian::CodePipeline.new(options[:pipeline])
  source = pipeline.get_source()
  build = pipeline.get_build()
  create = pipeline.get_create_changeset()
  deploy = pipeline.get_deploy_changeset()

  puts Terminal::Table.new(
    :title => "Stage: #{source[:stage]}",
    :rows => source[:rows])
    
  puts "\t|"
  puts "\t|"
  
  puts Terminal::Table.new(
    :title => "Stage: #{build[:stage]}",
    :rows => build[:rows])
    
  puts "\t|"
  puts "\t|"
  
  puts Terminal::Table.new(
    :title => "Stage: #{create[:stage]}",
    :rows => create[:rows])
    
  puts "\t|"
  puts "\t|"
  
  puts Terminal::Table.new(
    :title => "Stage: #{deploy[:stage]}",
    :rows => deploy[:rows])
end

#show_state ⇒ Object 



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# File 'lib/cfnguardian.rb', line 354

def show_state
  set_log_level(options[:debug])
  set_region(options[:region],true)
  action_prefix = nil

  if options[:filter].has_key?('topic')
    action_prefix = get_topic_arn_from_stack(options[:filter]['topic'])
  elsif options[:filter].has_key?('maintenance-group')
    action_prefix = "arn:aws:sns:#{Aws.config[:region]}:#{CfnGuardian::CloudWatch.()}:#{options[:filter]['maintenance-group']}MaintenanceGroup"
  end

  if options[:alarm_names]
    metric_alarms = CfnGuardian::CloudWatch.get_alarms_by_name(alarm_names: options[:alarm_names], state: options[:state], action_prefix: action_prefix)
  else
    metric_alarms = CfnGuardian::CloudWatch.get_alarms_by_prefix(prefix: options[:alarm_prefix], state: options[:state], action_prefix: action_prefix)
  end

  metric_alarms = CfnGuardian::CloudWatch.filter_alarms(filters: options[:filter], alarms: metric_alarms)

  formatter = CfnGuardian::DisplayFormatter.new()
  rows = formatter.alarm_state(metric_alarms)
  
  if rows.any?
    puts Terminal::Table.new( 
          :title => "Alarm State", 
          :headings => ['Alarm Name', 'State', 'Changed', 'Notifications'], 
          :rows => rows)
  else
    logger.warn "No alarms found"
  end
end

#tag_alarms ⇒ Object 



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# File 'lib/cfnguardian.rb', line 216

def tag_alarms
  set_log_level(options[:debug])
  set_region(options[:region],true)

  tags = options.fetch(:tags, {})

  if ENV.has_key?('CODEBUILD_RESOLVED_SOURCE_VERSION')
    tags[:'guardian:config:commit'] = ENV['CODEBUILD_RESOLVED_SOURCE_VERSION']
  end

  options[:config].each do |config|
    config_basename = File.basename(config, "alarms.yaml")
    stack_name_suffix = config_basename != "" ? "#{config_basename}-" : ""
    tags[:'guardian:stack:name'] = "guardian#{stack_name_suffix}"
    tags[:'guardian:config:yaml'] = config

    logger.info "tagging alarms from config file #{config}"
    compiler = CfnGuardian::Compile.new(config, options[:check_resources_exist])
    compiler.get_resources
    alarms = compiler.alarms
    global_tags = compiler.global_tags.merge(tags)

    tagger = CfnGuardian::Tagger.new()
    
    counter = 0
    max_retries = 3
    alarms.each do |alarm| 
      begin
        tagger.tag_alarm(alarm, global_tags)
      rescue Aws::CloudWatch::Errors::Throttling => e
        logger.info "cloud watch throttling alarm tagging requests, retrying ..."
        if (counter += 1) < max_retries
          sleep(1)
          redo 
        else
          logger.warn "throttled max times (#{max_retries}) tagging alarm #{alarm.name}, skipping ..."
        end
      end
    end
  end
end