Class: Sfn::Command::Parameters

Inherits:
Sfn::Command show all
Includes:
Sfn::CommandModule::Base, SfnParameters::Utils
Defined in:
lib/sfn-parameters/command.rb

Overview

Parameters command

Instance Method Summary collapse

Methods included from SfnParameters::Utils

#lock_content, #unlock_content

Instance Method Details

#execute! ⇒ Object

Execute parameters action request



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# File 'lib/sfn-parameters/command.rb', line 12

def execute!
  action, item = arguments[0,2]
  ui.info "Running parameters action #{ui.color(action.to_s, :bold)}"
  case action.to_sym
  when :lock
    item = validate_item(item)
    ui.print " Locking #{ui.color(item, :bold)}... "
    content = load_json(File.read(item)).to_smash
    if(content[:sfn_parameters_lock])
      ui.puts ui.color('no-op', :yellow)
      ui.warn "Item is already locked! (#{item})"
    else
      thing = lock_content(content)
      val = format_json(thing)
      File.write(item, val)
      ui.puts ui.color('locked', :blue)
    end
  when :unlock
    item = validate_item(item)
    ui.print " Unlocking #{ui.color(item, :bold)}... "
    content = load_json(File.read(item)).to_smash
    if(content[:sfn_parameters_lock])
      content = unlock_content(content)
      content.delete(:sfn_lock_enabled)
      File.write(item, format_json(content))
      ui.puts ui.color('unlocked', :green)
    else
      ui.puts ui.color('no-op', :yellow)
      ui.warn "Item is already unlocked! (#{item})"
    end
  when :show
    item = validate_item(item)
    content = load_json(File.read(item)).to_smash
    if(content[:sfn_parameters_lock])
      ui.print ui.color(' *', :bold)
      ui.print " Unlocking #{ui.color(item, :bold)} for display... "
      content = unlock_content(content)
      content.delete(:sfn_lock_enabled)
      ui.puts ui.color('unlocked', :green)
    end
    ui.puts format_json(content)
  when :create, :edit
    unless(ENV['EDITOR'])
      raise ArgumentError.new '$EDITOR must be set for create/edit commands!'
    end
    begin
      item = validate_item(item)
    rescue ArgumentError
      new_item = true
      item = new_item(item)
    end
    FileUtils.mkdir_p(File.dirname(item))
    tmp = Bogo::EphemeralFile.new('sfn-parameters')
    content = new_item ? Smash.new : load_json(File.read(item)).to_smash
    if(content[:sfn_parameters_lock])
      ui.print ui.color(' *', :bold)
      ui.print " Unlocking #{ui.color(item, :bold)} for edit... "
      content = unlock_content(content)
      ui.puts ui.color('unlocked', :green)
    end
    lock_enabled = content.delete(:sfn_lock_enabled) || new_item
    tmp.write(format_json(content))
    tmp.flush
    system("#{ENV['EDITOR']} #{tmp.path}")
    tmp.rewind
    content = load_json(tmp.read).to_smash
    ui.print ui.color(' *', :bold)
    if(lock_enabled)
      ui.print " Locking #{ui.color(item, :bold)} for storage... "
      content = lock_content(content)
      ui.puts ui.color('locked', :blue)
    else
      ui.puts " Storing #{ui.color(item, :bold)} for storage... #{ui.color('unlocked', :yellow)}"
    end
    File.write(item, format_json(content))
    tmp.close
  else
    ArgumentError.new "Unsupported action received `#{action}`. " \
      "Allowed: lock, unlock, show, create, edit"
  end
end

#new_item(item) ⇒ String

Expand path for new item if required

Parameters:

  • item (String)

Returns:

  • (String) 


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# File 'lib/sfn-parameters/command.rb', line 98

def new_item(item)
  unless(item.include?(File::SEPARATOR))
    prefixes = [
      config.get(:sfn_parameters, :directory),
      'infrastructure',
      'stacks'
    ].compact
    prefix = prefixes.find_all do |dir|
      File.directory?(dir)
    end
    if(prefix.size > 1)
      raise ArgumentError.new "Unable to auto-determine directory for item! Multiple directories found. " \
        "(detected: #{prefix.join(', ')})"
    elsif(prefix.empty?)
      raise ArgumentError.new "No existing parameter directories found. Please create required directory. " \
        "(checked: #{prefixes.join(', ')})"
    end
    File.join(prefix.first, "#{item}.json")
  end
end

#validate_item(item) ⇒ String

Validate existence of requested item. Expand path if only name given

Parameters:

  • item (String)

Returns:

  • (String) 


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# File 'lib/sfn-parameters/command.rb', line 124

def validate_item(item)
  items = [
    item,
    File.join(
      config.fetch(
        :sfn_parameters, :directory, 'stacks'
      ),
      item
    ),
    File.join(
      config.fetch(
        :sfn_parameters, :directory, 'stacks'
      ),
      "#{item}.json"
    ),
    File.join(
      config.fetch(
        :sfn_parameters, :directory, 'infrastructure'
      ),
      item
    ),
    File.join(
      config.fetch(
        :sfn_parameters, :directory, 'infrastructure'
      ),
      "#{item}.json"
    )
  ]
  valid = items.find_all do |file|
    File.exist?(file)
  end
  if(valid.empty?)
    raise ArgumentError.new "Failed to locate item `#{item}`!"
  elsif(valid.size > 1)
    raise ArgumentError.new "Multiple matches detected for item `#{item}`. " \
      "(Matches: #{valid.join(', ')})"
  else
    valid.first
  end
end