Class: EC2Launcher::InitOptions

Inherits:
Object
  • Object
show all
Defined in:
lib/ec2launcher/init_options.rb

Constant Summary collapse

SUB_COMMANDS = 
%w{init launch}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ InitOptions

Returns a new instance of InitOptions.



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# File 'lib/ec2launcher/init_options.rb', line 18

def initialize
  @opts = OptionParser.new do |opts|
    opts.banner = "Usage: ec2launcher [COMMAND]

  where [COMMAND] is one of:

init [LOCATION]   Initialize a repository in the specified directory.
launch [OPTIONS]  Launch a new instance.

  and [OPTIONS] include:

  "
    opts.separator "Query options:"

    opts.on("-l", "--list", "Show environments and applications.") do
      @options.list = true
    end

    opts.on("-s", "--show-defaults", "Show settings, but do not launch any instances. Does not display user-data.") do
      @options.show_defaults = true
    end

    opts.on("--show-user-data", "Show user-data, but do not launch any instances.") do
      @options.show_user_data = true
    end

    opts.separator ""
    opts.separator "Required Launch options:"

    opts.on("-e", "--environment ENV", "The environment for the server.") do |env|
      @options.environ = env
    end

    opts.on("-a", "--application NAME", "The name of the application class for the new server.") do |app_name|
      @options.application = app_name
    end

    opts.separator ""
    opts.separator "Additional launch options:"

    opts.on("--command [CMD]", String, "Additional command to run during launch sequence.") do |command|
      @options.commands << command
    end

    opts.on("--clone HOST", String, "Clone the latest snapshots from a specific host.") do |clone_host|
      @options.clone_host = clone_host
    end

    opts.on("-c", "--count COUNT", Integer, "Number of new instances to launch.") do |count|
      @options.count = count
    end

    opts.on("--skip-setup", "Skip running the setup scripts. Still runs pre/post commands.") do
      @options.skip_setup = true
    end

    opts.separator ""
    opts.separator "Overrides:"

    opts.on("-d", "--directory DIRECTORY", String, "Location of configuration directory. Defaults to current directory.") do |directory|
      @options.directory = directory
    end

    opts.on("-h", "--hostname NAME", String, "The name for the new server.") do |hostname|
      @options.hostname = hostname
    end

    opts.on("-u", "--chef-validation-url", String, "URL for the Chef validation pem file.") do |chef_validation_url|
      @options.chef_validation_url = chef_validation_url
    end

    opts.on("--ami AMI_ID", "AMI id") do |ami_id|
      @options.ami_id = ami_id
    end

    opts.on("-z", "--availability-zone ZONE", EC2Launcher::AVAILABILITY_ZONES, "AWS availability zone (#{EC2Launcher::AVAILABILITY_ZONES.join(', ')}).") do |zone|
      @options.zone = zone
    end

    opts.on("-i", "--instance-type TYPE", EC2Launcher::INSTANCE_TYPES, "EC2 instance type (#{EC2Launcher::INSTANCE_TYPES.join(', ')}).") do |instance_type|
      @options.instance_type = instance_type
    end

    opts.on("--volume-size SIZE", Integer, "EBS volume size in GB. Defaults to #{EC2Launcher::DEFAULT_VOLUME_SIZE} GB") do |volume_size|
      @options.volume_size = volume_size
    end

    opts.separator ""
    opts.separator "AWS Security Options:"

    opts.on("--access-key KEY", String, "Amazon access key. Overrides AWS_ACCESS_KEY environment variable.") do |access_key|
      @options.access_key = access_key
    end

    opts.on("--secret SECRET", String, "Amazon secret access key. Overrides AWS_SECRET_ACCESS_KEY environment variable.") do |secret|
      @options.secret = secret
    end

    opts.separator ""
    opts.separator "Common options:"

    opts.on_tail("-q", "--quiet", "Display as little information as possible.") do
      @options.verbosity = :quiet
    end

    opts.on_tail("-v", "--verbose", "Display as much information as possible.") do
      @options.verbosity = :verbose
    end

    # No argument, shows at tail.  This will print an options summary.
    # Try it and see!
    opts.on_tail("-?", "--help", "Show this message") do
      puts opts
      exit
    end    
  end
end

Instance Attribute Details

#command ⇒ Object (readonly)

Returns the value of attribute command.



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# File 'lib/ec2launcher/init_options.rb', line 12

def command
  @command
end

#location ⇒ Object (readonly)

Returns the value of attribute location.



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# File 'lib/ec2launcher/init_options.rb', line 14

def location
  @location
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/ec2launcher/init_options.rb', line 13

def options
  @options
end

Instance Method Details

#help ⇒ Object 



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# File 'lib/ec2launcher/init_options.rb', line 195

def help
  puts @opts
end

#parse(args) ⇒ Object 



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# File 'lib/ec2launcher/init_options.rb', line 136

def parse(args)
  @command = args.shift
  unless SUB_COMMANDS.include?(@command)
    puts "Missing command! " if @command.nil?
    puts "Invalid command: #{@command}" unless @command.nil? || @command == "-?" || @command == "--help"
    puts @opts
    exit 1
  end

  @options = OpenStruct.new
  @options.list = false
  @options.show_defaults = false
  @options.show_user_data = false

  @options.environ = nil
  @options.application = nil
  @options.commands = []
  @options.clone_host = nil
  @options.count = 1
  @options.skip_setup = false

  @options.ami_id = nil
  @options.hostname = nil
  @options.zone = nil
  @options.instance_type = nil
  @options.volume_size = nil

  @options.verbosity = :normal

  @options.directory = "./"

  if @command == "init"
    unless args.length >= 1
      puts "Missing location!"
      puts
      help
      exit 1
    end
    @location = args[0]
  else
    @opts.parse!(args)

    if (@options.environ.nil? || @options.application.nil?) && ! @options.list
      puts "Missing a required parameter: #{@options.environ.nil? ? '--environment' : '--application'}"
      puts
      help
      exit 1
    end

    if ! @options.hostname.nil? && @options.count > 1
      puts "Cannot specify both a hostname ['#{@options.hostname}'] and multiple instances [#{@options.count}]."
      puts
      exit 1
    end
  end

  @options
end