Class: ChefApply::CLI

Inherits:
Object
  • Object
show all
Includes:
Help, Options, Validation, Mixlib::CLI
Defined in:
lib/chef_apply/cli.rb,
lib/chef_apply/cli/help.rb,
lib/chef_apply/cli/options.rb,
lib/chef_apply/cli/validation.rb

Defined Under Namespace

Modules: Help, Options, Validation Classes: OptionValidationError

Constant Summary collapse

RC_OK = 
0
RC_COMMAND_FAILED = 
1
RC_UNHANDLED_ERROR = 
32
RC_ERROR_HANDLING_FAILED = 
64

Constants included from Help

Help::T

Constants included from Validation

Validation::CB_MATCHER, Validation::PROPERTY_MATCHER

Constants included from Options

Options::T, Options::TS

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Help

#format_flags, #format_help, #show_help, #show_version, #usage

Methods included from Validation

#properties_from_string, #transform_property_value, #validate_params

Methods included from Options

included, #parsed_options

Constructor Details

#initialize(argv) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/chef_apply/cli.rb', line 56

def initialize(argv)
  @argv = argv.clone
  @rc = RC_OK
  super()
end

Instance Attribute Details

#archive_file_location ⇒ Object (readonly)

Returns the value of attribute archive_file_location.



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# File 'lib/chef_apply/cli.rb', line 41

def archive_file_location
  @archive_file_location
end

#target_hosts ⇒ Object (readonly)

Returns the value of attribute target_hosts.



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# File 'lib/chef_apply/cli.rb', line 41

def target_hosts
  @target_hosts
end

#temp_cookbook ⇒ Object (readonly)

Returns the value of attribute temp_cookbook.



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# File 'lib/chef_apply/cli.rb', line 41

def temp_cookbook
  @temp_cookbook
end

Instance Method Details

#capture_exception_backtrace(e) ⇒ Object 



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# File 'lib/chef_apply/cli.rb', line 303

def capture_exception_backtrace(e)
  UI::ErrorPrinter.write_backtrace(e, @argv)
end

#connect_target(target_host, reporter) ⇒ Object

Accepts a target_host and establishes the connection to that host while providing visual feedback via the Terminal API.



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# File 'lib/chef_apply/cli.rb', line 157

def connect_target(target_host, reporter)
  connect_message = T.status.connecting(target_host.user)
  reporter.update(connect_message)
  do_connect(target_host, reporter)
end

#converge(reporter, local_policy_path, target_host) ⇒ Object

Runs the Converge action and renders UI updates as the action reports back



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# File 'lib/chef_apply/cli.rb', line 241

def converge(reporter, local_policy_path, target_host)
  reporter.update(TS.converge.converging(temp_cookbook.descriptor))
  converge_args = { local_policy_path: local_policy_path, target_host: target_host }
  converger = Action::ConvergeTarget.new(converge_args)
  converger.run do |event, data|
    case event
    when :success
      reporter.success(TS.converge.success(temp_cookbook.descriptor))
    when :converge_error
      reporter.error(TS.converge.failure(temp_cookbook.descriptor))
    when :creating_remote_policy
      reporter.update(TS.converge.creating_remote_policy)
    when :uploading_trusted_certs
      reporter.update(TS.converge.uploading_trusted_certs)
    when :running_chef
      reporter.update(TS.converge.converging(temp_cookbook.descriptor))
    when :reboot
      reporter.success(TS.converge.reboot)
    else
      handle_message(event, data, reporter)
    end
  end
end

#do_connect(target_host, reporter) ⇒ Object 



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

def do_connect(target_host, reporter)
  target_host.connect!
  reporter.update(T.status.connected)
rescue StandardError => e
  message = ChefApply::UI::ErrorPrinter.error_summary(e)
  reporter.error(message)
  raise
end

#generate_local_policy(reporter) ⇒ Object

Runs the GenerateLocalPolicy action and renders UI updates as the action reports back



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# File 'lib/chef_apply/cli.rb', line 222

def generate_local_policy(reporter)
  action = Action::GenerateLocalPolicy.new(cookbook: temp_cookbook)
  action.run do |event, data|
    case event
    when :generating
      reporter.update(TS.generate_local_policy.generating)
    when :exporting
      reporter.update(TS.generate_local_policy.exporting)
    when :success
      reporter.success(TS.generate_local_policy.success)
    else
      handle_message(event, data, reporter)
    end
  end
  action.archive_file_location
end

#generate_temp_cookbook(arguments, reporter) ⇒ Object

Runs a GenerateCookbook action based on recipe/resource infoprovided and renders UI updates as the action reports back



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# File 'lib/chef_apply/cli.rb', line 197

def generate_temp_cookbook(arguments, reporter)
  opts = if arguments.length == 1
           { recipe_spec: arguments.shift,
             cookbook_repo_paths: parsed_options[:cookbook_repo_paths] }
         else
           { resource_type: arguments.shift,
             resource_name: arguments.shift,
             resource_properties: properties_from_string(arguments) }
         end
  action = ChefApply::Action::GenerateTempCookbook.from_options(opts)
  action.run do |event, data|
    case event
    when :generating
      reporter.update(TS.generate_temp_cookbook.generating)
    when :success
      reporter.success(TS.generate_temp_cookbook.success)
    else
      handle_message(event, data, reporter)
    end
  end
  action.generated_cookbook
end

#handle_job_failures(jobs) ⇒ Object

When running multiple jobs, exceptions are captured to the job to avoid interrupting other jobs in process. This function collects them and raises directly (in the case of just one job in the list) or raises a MultiJobFailure (when more than one job was being run)

Raises:



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# File 'lib/chef_apply/cli.rb', line 284

def handle_job_failures(jobs)
  failed_jobs = jobs.select { |j| !j.exception.nil? }
  return if failed_jobs.empty?
  if jobs.length == 1
    # Don't provide a bad UX by showing a 'one or more jobs has failed'
    # message when there was only one job.
    raise jobs.first.exception
  end
  raise ChefApply::MultiJobFailure.new(failed_jobs)
end

#handle_message(message, data, reporter) ⇒ Object

A handler for common action messages



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# File 'lib/chef_apply/cli.rb', line 296

def handle_message(message, data, reporter)
  if message == :error # data[0] = exception
    # Mark the current task as failed with whatever data is available to us
    reporter.error(ChefApply::UI::ErrorPrinter.error_summary(data[0]))
  end
end

#handle_perform_error(e) ⇒ Object 



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# File 'lib/chef_apply/cli.rb', line 265

def handle_perform_error(e)
  require "chef_apply/errors/standard_error_resolver"
  id = e.respond_to?(:id) ? e.id : e.class.to_s
  # TODO: This is currently sending host information for certain ssh errors
  #       post release we need to scrub this data. For now I'm redacting the
  #       whole message.
  # message = e.respond_to?(:message) ? e.message : e.to_s
  Telemeter.capture(:error, exception: { id: id, message: "redacted" })
  wrapper = ChefApply::Errors::StandardErrorResolver.wrap_exception(e)
  capture_exception_backtrace(wrapper)
  # Now that our housekeeping is done, allow user-facing handling/formatting
  # in `run` to execute by re-raising
  raise wrapper
end

#handle_run_error(e) ⇒ Object 



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# File 'lib/chef_apply/cli.rb', line 83

def handle_run_error(e)
  case e
  when nil
    RC_OK
  when WrappedError
    UI::ErrorPrinter.show_error(e)
    RC_COMMAND_FAILED
  when SystemExit
    e.status
  when Exception
    UI::ErrorPrinter.dump_unexpected_error(e)
    RC_ERROR_HANDLING_FAILED
  else
    UI::ErrorPrinter.dump_unexpected_error(e)
    RC_UNHANDLED_ERROR
  end
end

#install(target_host, reporter) ⇒ Object 



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# File 'lib/chef_apply/cli.rb', line 163

def install(target_host, reporter)
  context = TS.install_chef
  reporter.update(context.verifying)
  installer = Action::InstallChef.instance_for_target(target_host, check_only: !parsed_options[:install])
  installer.run do |event, data|
    case event
    when :installing
      if installer.upgrading?
        message = context.upgrading(target_host.installed_chef_version, installer.version_to_install)
      else
        message = context.installing(installer.version_to_install)
      end
      reporter.update(message)
    when :uploading
      reporter.update(context.uploading)
    when :downloading
      reporter.update(context.downloading)
    when :already_installed
      reporter.update(context.already_present(target_host.installed_chef_version))
    when :install_complete
      if installer.upgrading?
        message = context.upgrade_success(target_host.installed_chef_version, installer.version_to_install)
      else
        message = context.install_success(installer.version_to_install)
      end
      reporter.update(message)
    else
      handle_message(event, data, reporter)
    end
  end
end

#perform_run ⇒ Object 



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# File 'lib/chef_apply/cli.rb', line 101

def perform_run
  parse_options(@argv)
  if @argv.empty? || parsed_options[:help]
    show_help
  elsif parsed_options[:version]
    show_version
  else
    validate_params(cli_arguments)
    target_hosts = resolve_targets(cli_arguments.shift, parsed_options)
    render_cookbook_setup(cli_arguments)
    render_converge(target_hosts)
  end
rescue OptionParser::InvalidOption => e # from parse_options
  # Using nil here is a bit gross but it prevents usage from printing.
  ove = OptionValidationError.new("CHEFVAL010", nil,
                                  e.message.split(":")[1].strip, # only want the flag
                                  format_flags.lines[1..-1].join # remove 'FLAGS:' header
                                 )
  handle_perform_error(ove)
rescue => e
  handle_perform_error(e)
ensure
  temp_cookbook.delete unless temp_cookbook.nil?
end

#render_converge(target_hosts) ⇒ Object 



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# File 'lib/chef_apply/cli.rb', line 141

def render_converge(target_hosts)
  jobs = target_hosts.map do |target_host|
    # Each block will run in its own thread during render.
    UI::Terminal::Job.new("[#{target_host.hostname}]", target_host) do |reporter|
      connect_target(target_host, reporter)
      install(target_host, reporter)
      converge(reporter, archive_file_location, target_host)
    end
  end
  header = TS.converge.header(target_hosts.length, temp_cookbook.descriptor, temp_cookbook.from)
  UI::Terminal.render_parallel_jobs(header, jobs)
  handle_job_failures(jobs)
end

#render_cookbook_setup(arguments) ⇒ Object 



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# File 'lib/chef_apply/cli.rb', line 132

def render_cookbook_setup(arguments)
  UI::Terminal.render_job(TS.generate_temp_cookbook.generating) do |reporter|
    @temp_cookbook = generate_temp_cookbook(arguments, reporter)
  end
  UI::Terminal.render_job(TS.generate_temp_cookbook.generating) do |reporter|
    @archive_file_location = generate_local_policy(reporter)
  end
end

#resolve_targets(host_spec, opts) ⇒ Object 



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# File 'lib/chef_apply/cli.rb', line 126

def resolve_targets(host_spec, opts)
  @target_hosts = TargetResolver.new(host_spec,
                                     opts.delete(:protocol),
                                     opts).targets
end

#run ⇒ Object 



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# File 'lib/chef_apply/cli.rb', line 62

def run
  # Perform a timing and capture of the run. Individual methods and actions may perform
  # nested Telemeter.timed_*_capture or Telemeter.capture calls in their operation, and
  # they will be captured in the same telemetry session.
  # NOTE: We're not currently sending arguments to telemetry because we have not implemented
  #       pre-parsing of arguments to eliminate potentially sensitive data such as
  #       passwords in host name, or in ad-hoc converge properties.
  Telemeter.timed_run_capture([:redacted]) do
    begin
      perform_run
    rescue Exception => e
      @rc = handle_run_error(e)
    end
  end
rescue => e
  @rc = handle_run_error(e)
ensure
  Telemeter.commit
  exit @rc
end