Class: GoldenBrindle::Command::Registry

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/golden_brindle/command.rb

Overview

A Singleton class that manages all of the available commands and handles running them.

Instance Method Summary collapse

Instance Method Details

#commands ⇒ Object

Builds a list of possible commands from the Command derivates list



169
170
171
172
173
 
# File 'lib/golden_brindle/command.rb', line 169

def commands
  pmgr = GemPlugin::Manager.instance
  list = pmgr.plugins["/commands"].keys
  list.sort
end

#print_command_list ⇒ Object

Prints a list of available commands.



176
177
178
179
180
181
182
183
184
185
186
187
188
189
 
# File 'lib/golden_brindle/command.rb', line 176

def print_command_list
  puts "#{GoldenBrindle::Const::BANNER}\nAvailable commands are:\n\n"

  self.commands.each do |name|
    if /brindle::/ =~ name
      name = name[9 .. -1]
    end

    puts " - #{name[1 .. -1]}\n"
  end

  puts "\nEach command takes -h as an option to get help."

end

#run(args) ⇒ Object

Runs the args against the first argument as the command name. If it has any errors it returns a false, otherwise it return true.



194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
 
# File 'lib/golden_brindle/command.rb', line 194

def run(args)
  # find the command
  cmd_name = args.shift

  if !cmd_name or cmd_name == "?" or cmd_name == "help"
    print_command_list
    return true
  elsif cmd_name == "--version"
    puts "Golden Brindle #{GoldenBrindle::Const::VERSION}"
    return true
  end

  begin
    if ["start", "stop", "restart", "configure", "reload"].include? cmd_name
      cmd_name = "brindle::" + cmd_name
    end
    command = GemPlugin::Manager.instance.create("/commands/#{cmd_name}", :argv => args)
  rescue OptionParser::InvalidOption
    STDERR.puts "#$! for command '#{cmd_name}'"
    STDERR.puts "Try #{cmd_name} -h to get help."
    return false
  rescue
    STDERR.puts "ERROR RUNNING '#{cmd_name}': #$!"
    STDERR.puts "Use help command to get help"
    return false
  end

  # Normally the command is NOT valid right after being created
  # but sometimes (like with -h or -v) there's no further processing
  # needed so the command is already valid so we can skip it.
  if !command.done_validating
    if !command.validate
      STDERR.puts "#{cmd_name} reported an error. Use golden_brindle #{cmd_name} -h to get help."
      return false
    else
      command.run
    end
  end

  true
end