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

Constant Summary collapse

NEW_ITEM_DEFAULT =

Default contents for new item creation

Smash.new(
  :parameters => {},
  :compile_parameters => {},
  :apply_stacks => [],
  :stacks => {}
)

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 20

def execute!
  action, item = arguments[0].to_s, arguments[1].to_s
  ui.info "Running parameters action #{ui.color(action.to_s, :bold)}"
  if(respond_to?("run_action_#{action}"))
    send("run_action_#{action}", item)
  else
    allowed_actions = public_methods.grep(/^run_action/).sort.map do |item|
      item.to_s.sub('run_action_', '')
    end
    raise ArgumentError.new "Unsupported action received `#{action}`. " \
      "Allowed: #{allowed_actions.join(', ')}"
  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 137

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

#run_action_create(item) ⇒ Object

Perform create on item

Parameters:

  • item (String) —

    item to lock



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# File 'lib/sfn-parameters/command.rb', line 89

def run_action_create(item)
  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', '.json'])
  content = new_item ? NEW_ITEM_DEFAULT : 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}")
  content = load_json(File.read(tmp.path)).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
end

#run_action_edit(item) ⇒ Object

Perform edit on item

Parameters:

  • item (String) —

    item to lock



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# File 'lib/sfn-parameters/command.rb', line 128

def run_action_edit(item)
  validate_item(item)
  run_action_create(item)
end

#run_action_lock(item) ⇒ Object

Perform locking on item

Parameters:

  • item (String) —

    item to lock



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# File 'lib/sfn-parameters/command.rb', line 37

def run_action_lock(item)
  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
end

#run_action_show(item) ⇒ Object

Perform show on item

Parameters:

  • item (String) —

    item to lock



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# File 'lib/sfn-parameters/command.rb', line 73

def run_action_show(item)
  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)
end

#run_action_unlock(item) ⇒ Object

Perform unlocking on item

Parameters:

  • item (String) —

    item to lock



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# File 'lib/sfn-parameters/command.rb', line 55

def run_action_unlock(item)
  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
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 163

def validate_item(item)
  if(item.to_s.empty?)
    raise NameError.new 'Item name is required. No item name provided.'
  end
  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"
    )
  ].map{|item| File.expand_path(item) }.uniq
  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