class Chef::Knife::SubcommandLoader::HashedCommandLoader

Load a subcommand from a pre-computed path for the given command.

Constants

KEY

Attributes

manifest[RW]

Public Class Methods

new(chef_config_dir, plugin_manifest) click to toggle source
Calls superclass method Chef::Knife::SubcommandLoader.new
# File lib/chef/knife/core/hashed_command_loader.rb, line 30
def initialize(chef_config_dir, plugin_manifest)
  super(chef_config_dir)
  @manifest = plugin_manifest
end

Public Instance Methods

guess_category(args) click to toggle source
# File lib/chef/knife/core/hashed_command_loader.rb, line 35
def guess_category(args)
  category_words = positional_arguments(args)
  category_words.map! { |w| w.split("-") }.flatten!
  find_longest_key(manifest[KEY]["plugins_by_category"], category_words, " ")
end
list_commands(pref_category = nil) click to toggle source
# File lib/chef/knife/core/hashed_command_loader.rb, line 41
def list_commands(pref_category = nil)
  if pref_category || manifest[KEY]["plugins_by_category"].key?(pref_category)
    commands = { pref_category => manifest[KEY]["plugins_by_category"][pref_category] }
  else
    commands = manifest[KEY]["plugins_by_category"]
  end
  # If any of the specified plugins in the manifest dont have a valid path we will
  # eventually get an error and the user will need to rehash - instead, lets just
  # print out 1 error here telling them to rehash
  errors = {}
  commands.collect { |k, v| v }.flatten.each do |command|
    paths = manifest[KEY]["plugins_paths"][command]
    if paths && paths.is_a?(Array)
      # It is only an error if all the paths don't exist
      if paths.all? { |sc| !File.exists?(sc) }
        errors[command] = paths
      end
    end
  end
  if errors.empty?
    commands
  else
    Chef::Log.error "There are files specified in the manifest that are missing. Please rehash to update the subcommands cache. If you see this error after rehashing delete the cache at #{Chef::Knife::SubcommandLoader.plugin_manifest_path}"
    Chef::Log.error "Missing files:\n\t#{errors.values.flatten.join("\n\t")}"
    {}
  end
end
load_command(args) click to toggle source
# File lib/chef/knife/core/hashed_command_loader.rb, line 73
def load_command(args)
  paths = manifest[KEY]["plugins_paths"][subcommand_for_args(args)]
  if paths.nil? || paths.empty? || (! paths.is_a? Array)
    false
  else
    paths.each do |sc|
      if File.exists?(sc)
        Kernel.load sc
      else
        return false
      end
    end
    true
  end
end
subcommand_files() click to toggle source
# File lib/chef/knife/core/hashed_command_loader.rb, line 69
def subcommand_files
  manifest[KEY]["plugins_paths"].values.flatten
end
subcommand_for_args(args) click to toggle source
# File lib/chef/knife/core/hashed_command_loader.rb, line 89
def subcommand_for_args(args)
  if manifest[KEY]["plugins_paths"].key?(args)
    args
  else
    find_longest_key(manifest[KEY]["plugins_paths"], args, "_")
  end
end