Module: Shell

Defined in:
lib/chef/shell.rb,
lib/chef/shell/ext.rb,
lib/chef/shell/model_wrapper.rb,
lib/chef/shell/shell_session.rb

Overview

= Shell Shell is Chef in an IRB session. Shell can interact with a Chef server via the REST API, and run and debug recipes interactively.

Defined Under Namespace

Modules: Extensions Classes: ClientSession, DoppelGangerClient, DoppelGangerSession, ModelWrapper, NamedDataBagWrapper, Options, ShellSession, SoloLegacySession, SoloSession, StandAloneSession

Constant Summary collapse

LEADERS = 
Hash.new("")

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.client_type ⇒ Object

Returns the value of attribute client_type


44
45
46
 
# File 'lib/chef/shell.rb', line 44

def client_type
  @client_type
end

.editor ⇒ Object 


196
197
198
 
# File 'lib/chef/shell.rb', line 196

def self.editor
  @editor || Chef::Config[:editor] || ENV["EDITOR"]
end

.env ⇒ Object

Returns the value of attribute env


46
47
48
 
# File 'lib/chef/shell.rb', line 46

def env
  @env
end

.options ⇒ Object

Returns the value of attribute options


45
46
47
 
# File 'lib/chef/shell.rb', line 45

def options
  @options
end

Class Method Details

.configure_irb ⇒ Object 


117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
 
# File 'lib/chef/shell.rb', line 117

def self.configure_irb
  irb_conf[:HISTORY_FILE] = Chef::Util::PathHelper.home(".chef", "chef_shell_history")
  irb_conf[:SAVE_HISTORY] = 1000

  irb_conf[:IRB_RC] = lambda do |conf|
    m = conf.main

    conf.prompt_c       = "chef#{leader(m)} > "
    conf.return_format  = " => %s \n"
    conf.prompt_i       = "chef#{leader(m)} (#{Chef::VERSION})> "
    conf.prompt_n       = "chef#{leader(m)} ?> "
    conf.prompt_s       = "chef#{leader(m)}%l> "
    conf.use_tracer     = false
  end
end

.fatal!(message, exit_status) ⇒ Object 


177
178
179
180
 
# File 'lib/chef/shell.rb', line 177

def self.fatal!(message, exit_status)
  Chef::Log.fatal(message)
  exit exit_status
end

.greeting ⇒ Object 


164
165
166
167
168
 
# File 'lib/chef/shell.rb', line 164

def self.greeting
  " #{Etc.getlogin}@#{Shell.session.node["fqdn"]}"
rescue NameError, ArgumentError
  ""
end

.init(main) ⇒ Object 


146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
 
# File 'lib/chef/shell.rb', line 146

def self.init(main)
  parse_json
  configure_irb

  session # trigger ohai run + session load

  session.node.consume_attributes(@json_attribs)

  Extensions.extend_context_object(main)

  main.version
  puts

  puts "run `help' for help, `exit' or ^D to quit."
  puts
  puts "Ohai2u#{greeting}!"
end

.irb_conf ⇒ Object 


113
114
115
 
# File 'lib/chef/shell.rb', line 113

def self.irb_conf
  @irb_conf || IRB.conf
end

.irb_conf=(conf_hash) ⇒ Object

Set the irb_conf object to something other than IRB.conf usful for testing.


109
110
111
 
# File 'lib/chef/shell.rb', line 109

def self.irb_conf=(conf_hash)
  @irb_conf = conf_hash
end

.leader(main_object) ⇒ Object 


133
134
135
136
 
# File 'lib/chef/shell.rb', line 133

def self.leader(main_object)
  env_string = Shell.env ? " (#{Shell.env})" : ""
  LEADERS[main_object.class] + env_string
end

.parse_json ⇒ Object 


170
171
172
173
174
175
 
# File 'lib/chef/shell.rb', line 170

def self.parse_json
  if Chef::Config[:json_attribs]
    config_fetcher = Chef::ConfigFetcher.new(Chef::Config[:json_attribs])
    @json_attribs = config_fetcher.fetch_json
  end
end

.parse_opts ⇒ Object 


191
192
193
194
 
# File 'lib/chef/shell.rb', line 191

def self.parse_opts
  @options = Options.new
  @options.parse_opts
end

.running? ⇒ Boolean

Shell assumes it’s running whenever it is defined

Returns:

  • (Boolean) 

103
104
105
 
# File 'lib/chef/shell.rb', line 103

def self.running?
  true
end

.session ⇒ Object 


138
139
140
141
142
143
144
 
# File 'lib/chef/shell.rb', line 138

def self.session
  unless client_type.instance.node_built?
    puts "Session type: #{client_type.session_type}"
    client_type.instance.reset!
  end
  client_type.instance
end

.setup_logger ⇒ Object 


93
94
95
96
97
98
99
100
 
# File 'lib/chef/shell.rb', line 93

def self.setup_logger
  Chef::Config[:log_level] ||= :warn
  # If log_level is auto, change it to warn
  Chef::Config[:log_level] = :warn if Chef::Config[:log_level] == :auto
  Chef::Log.init(STDERR)
  Mixlib::Authentication::Log.logger = Ohai::Log.logger = Chef::Log.logger
  Chef::Log.level = Chef::Config[:log_level] || :warn
end

.solo_mode? ⇒ Boolean

Returns:

  • (Boolean) 

89
90
91
 
# File 'lib/chef/shell.rb', line 89

def self.solo_mode?
  Chef::Config[:solo]
end

.start ⇒ Object

Start the irb REPL with chef-shell’s customizations


51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
 
# File 'lib/chef/shell.rb', line 51

def self.start
  setup_logger
  # FUGLY HACK: irb gives us no other choice.
  irb_help = [:help, :irb_help, IRB::ExtendCommandBundle::NO_OVERRIDE]
  IRB::ExtendCommandBundle.instance_variable_get(:@ALIASES).delete(irb_help)

  parse_opts
  Chef::Config[:shell_config] = options.config

  # HACK: this duplicates the functions of IRB.start, but we have to do it
  # to get access to the main object before irb starts.
  ::IRB.setup(nil)

  irb = IRB::Irb.new

  if solo_mode?
    # Setup the mocked ChefServer
    Chef::Config.local_mode = true
    Chef::LocalMode.setup_server_connectivity
  end

  init(irb.context.main)

  irb_conf[:IRB_RC].call(irb.context) if irb_conf[:IRB_RC]
  irb_conf[:MAIN_CONTEXT] = irb.context

  trap("SIGINT") do
    irb.signal_handle
  end

  catch(:IRB_EXIT) do
    irb.eval_input
  end
ensure
  # We destroy the mocked ChefServer
  Chef::LocalMode.destroy_server_connectivity if solo_mode?
end