Class: TemplateConfigurator::CommandLine

Inherits:
Object
  • Object
show all
Defined in:
lib/template_configurator/command_line.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CommandLine

Returns a new instance of CommandLine.



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# File 'lib/template_configurator/command_line.rb', line 27

def initialize
  @logger = Logger.new STDERR

  @options = {}
  @options[:log] = {}
  @options[:template] = {}
  @options[:service] = {}

  args = OptionParser.new do |opts|
    opts.banner = "Usage: #{$0}"

    #
    # Service options
    #
    @options[:service][:command] = '/sbin/service'
    opts.on("--service:command EXECUTABLE", "action to execute to command service (default: #{@options[:service][:command]})") do |executable|
      @options[:service][:command] = executable
    end

    @options[:service][:name] = nil
    opts.on("--service:name INITRC", "initrc used to control service (default: #{@options[:service][:name]})") do |initrc|
      @options[:service][:name] = initrc
    end

    @options[:service][:status] = 'status'
    opts.on("--service:status ACTION", "action to execute to get status of service (default: #{@options[:service][:status]})") do |action|
      @options[:service][:status] = action
    end

    @options[:service][:reload] = 'reload'
    opts.on("--service:reload ACTION", "action to execute to reload service (default: #{@options[:service][:reload]})") do |action|
      @options[:service][:reload] = action
    end

    @options[:service][:restart] = 'restart'
    opts.on("--service:restart ACTION", "action to execute to restart service (default: #{@options[:service][:restart]})") do |action|
      @options[:service][:restart] = action
    end

    @options[:service][:start] = 'start'
    opts.on("--service:start ACTION", "action to execute to start service (default: #{@options[:service][:start]})") do |action|
      @options[:service][:start] = action
    end

    @options[:service][:stop] = 'stop'
    opts.on("--service:stop ACTION", "action to execute to stop service (default: #{@options[:service][:stop]})") do |action|
      @options[:service][:stop] = action
    end


    @options[:service][:retries] = 5
    opts.on("--service:retries NUMBER", "number of attempts to reload service (default: #{@options[:service][:retries]})") do |number|
      @options[:service][:retries] = number.to_i
    end

    @options[:service][:retry_delay] = 2
    opts.on("--service:retry-delay SECS", "seconds to sleep between retries (default: #{@options[:service][:retry_delay]})") do |seconds|
      @options[:service][:retry_delay] = seconds.to_i
    end

    #
    # Template options
    #

    @options[:template][:input_file] = nil
    opts.on("--template:input-file FILE", "Where to read ERB template") do |file|
      @options[:template][:input_file] = file
    end

    @options[:template][:output_file] = nil
    opts.on("--template:output-file FILE", "Where to write the output of the template") do |file|
      @options[:template][:output_file] = file
    end

    @options[:template][:json_file] = nil
    opts.on("--template:json-file FILE", "Base port to initialize haproxy listening for mysql clusters") do |file|
      @options[:template][:json_file] = file
    end

    #
    # Logging
    #

    @options[:log][:level] = Logger::INFO
    opts.on( '--log:level LEVEL', 'Logging level' ) do|level|
      @options[:log][:level] = Logger.const_get level.upcase
    end

    @options[:log][:file] = STDERR
    opts.on( '--log:file FILE', 'Write logs to FILE (default: STDERR)' ) do|file|
      @options[:log][:file] = File.open(file, File::WRONLY | File::APPEND | File::CREAT)
    end

    @options[:log][:age] = 7
    opts.on( '--log:age DAYS', "Rotate logs after DAYS pass (default: #{@options[:log][:age]})" ) do|days|
      @options[:log][:age] = days.to_i
    end

    @options[:log][:size] = 1024*1024*10
    opts.on( '--log:size SIZE', 'Rotate logs after the grow past SIZE bytes' ) do |size|
      @options[:log][:size] = size.to_i
    end


    #
    # General options
    #

    @options[:dry_run] = false
    opts.on("--dry-run", "Dry run (do not commit changes to disk)") do 
      @options[:dry_run] = true
    end


    opts.on( '-V', '--version', 'Display version information' ) do
      puts "Template Configurator #{TemplateConfigurator::VERSION}"
      puts "Copyright (C) 2012 Erik Osterman <[email protected]>"
      puts "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>"
      puts "This is free software: you are free to change and redistribute it."
      puts "There is NO WARRANTY, to the extent permitted by law."
      exit
    end

    opts.on( '-h', '--help', 'Display this screen' ) do
      puts opts
      exit
    end

  end

  begin
    args.parse!
    raise OptionParser::MissingArgument.new("--template:input-file") if @options[:template][:input_file].nil?
  rescue OptionParser::MissingArgument => e
    puts e.message
    puts args
    exit 1
  rescue OptionParser::InvalidOption => e
    puts e.message
    puts args
    exit 1
  end
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/template_configurator/command_line.rb', line 171

def execute
  @processor = Processor.new(@options)
  TemplateConfigurator.log = Logger.new(@options[:log][:file], @options[:log][:age], @options[:log][:size])
  TemplateConfigurator.log.level = @options[:log][:level]
  begin
    @processor.render
  rescue Interrupt => e
    TemplateConfigurator.log.info("Aborting")
  rescue NameError, ArgumentError => e
    TemplateConfigurator.log.fatal(e.message)
    TemplateConfigurator.log.debug(e.backtrace.join("\n"))
    exit(1)
  rescue Exception => e
    TemplateConfigurator.log.fatal("#{e.class}: #{e.message}")
    TemplateConfigurator.log.debug(e.backtrace.join("\n"))
    exit(1)
  end
  exit(0)
end