(Not documented)
# File lib/mcollective/applications.rb, line 3 3: def self.[](appname) 4: load_application(appname) 5: PluginManager["#{appname}_application"] 6: end
Filters a string of opts out using Shellwords keeping only things related to —config and -c
# File lib/mcollective/applications.rb, line 49 49: def self.filter_extra_options(opts) 50: res = "" 51: words = Shellwords.shellwords(opts) 52: words.each_with_index do |word,idx| 53: if word == "-c" 54: return "--config=#{words[idx + 1]}" 55: elsif word == "--config" 56: return "--config=#{words[idx + 1]}" 57: elsif word =~ /\-c=/ 58: return word 59: elsif word =~ /\-\-config=/ 60: return word 61: end 62: end 63: 64: return "" 65: end
Returns an array of applications found in the lib dirs
# File lib/mcollective/applications.rb, line 36 36: def self.list 37: load_config 38: 39: PluginManager.find("application") 40: rescue SystemExit 41: exit 1 42: rescue Exception => e 43: STDERR.puts "Failed to generate application list: #{e.class}: #{e}" 44: exit 1 45: end
(Not documented)
# File lib/mcollective/applications.rb, line 26 26: def self.load_application(appname) 27: return if PluginManager.include?("#{appname}_application") 28: 29: load_config 30: 31: PluginManager.loadclass "MCollective::Application::#{appname.capitalize}" 32: PluginManager << {:type => "#{appname}_application", :class => "MCollective::Application::#{appname.capitalize}"} 33: end
We need to know the config file in order to know the libdir so that we can find applications.
The problem is the CLI might be stuffed with options only the app in the libdir might understand so we have a chicken and egg situation.
We’re parsing and filtering MCOLLECTIVE_EXTRA_OPTS removing all but config related options and parsing the options looking just for the config file.
We’re handling failures gracefully and finally restoring the ARG and MCOLLECTIVE_EXTRA_OPTS to the state they were before we started parsing.
This is mostly a hack, when we’re redoing how config works this stuff should be made less sucky
# File lib/mcollective/applications.rb, line 84 84: def self.load_config 85: return if Config.instance.configured 86: 87: original_argv = ARGV.clone 88: original_extra_opts = ENV["MCOLLECTIVE_EXTRA_OPTS"].clone rescue nil 89: configfile = nil 90: 91: parser = OptionParser.new 92: parser.on("--config CONFIG", "-c", "Config file") do |f| 93: configfile = f 94: end 95: 96: parser.program_name = $0 97: 98: parser.on("--help") 99: 100: # avoid option parsers own internal version handling that sux 101: parser.on("-v", "--verbose") 102: 103: if original_extra_opts 104: begin 105: # optparse will parse the whole ENV in one go and refuse 106: # to play along with the retry trick I do below so in 107: # order to handle unknown options properly I parse out 108: # only -c and --config deleting everything else and 109: # then restore the environment variable later when I 110: # am done with it 111: ENV["MCOLLECTIVE_EXTRA_OPTS"] = filter_extra_options(ENV["MCOLLECTIVE_EXTRA_OPTS"].clone) 112: parser.environment("MCOLLECTIVE_EXTRA_OPTS") 113: rescue Exception => e 114: Log.error("Failed to parse MCOLLECTIVE_EXTRA_OPTS: #{e}") 115: end 116: 117: ENV["MCOLLECTIVE_EXTRA_OPTS"] = original_extra_opts.clone 118: end 119: 120: begin 121: parser.parse! 122: rescue OptionParser::InvalidOption => e 123: retry 124: end 125: 126: ARGV.clear 127: original_argv.each {|a| ARGV << a} 128: 129: configfile = Util.config_file_for_user unless configfile 130: 131: Config.instance.loadconfig(configfile) 132: end
(Not documented)
# File lib/mcollective/applications.rb, line 8 8: def self.run(appname) 9: load_config 10: 11: begin 12: load_application(appname) 13: rescue Exception => e 14: e.backtrace.first << Util.colorize(:red, " <----") 15: STDERR.puts "Application '#{appname}' failed to load:" 16: STDERR.puts 17: STDERR.puts Util.colorize(:red, " #{e} (#{e.class})") 18: STDERR.puts 19: STDERR.puts " %s" % [e.backtrace.join("\n ")] 20: exit 1 21: end 22: 23: PluginManager["#{appname}_application"].run 24: end
Disabled; run with --debug to generate this.
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