Class: Puffy::Cli

Inherits:
Object
  • Object
show all
Defined in:
lib/puffy/cli.rb

Overview

Command-line processing

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Cli

rubocop:disable Metrics/AbcSize, Metrics/MethodLength



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# File 'lib/puffy/cli.rb', line 10

def initialize # rubocop:disable Metrics/AbcSize, Metrics/MethodLength
  cli = self

  @main = Cri::Command.define do
    name    'puffy'
    usage   'puffy [options] <command>'
    summary 'Network firewall rules made easy!'

    description <<~DESCRIPTION
      Generate firewall rules for multiple nodes from a single network
      specification file.
    DESCRIPTION

    flag :h, :help, 'Show help for this command' do |_value, cmd|
      puts cmd.help
      exit 0
    end

    run do |_opts, _args, cmd|
      puts cmd.help
      exit 0
    end
  end

  @main.define_command do
    name    'generate'
    usage   'generate [options] <network> <hostname>'
    summary 'Generate the firewall configuration for a node'

    description <<~DESCRIPTION
      Generate the firewall configuration for the node "hostname" for which
      the configuration is described in the "network" specification file.
    DESCRIPTION

    required :f, :formatter, 'The formatter to use', default: 'Pf'

    param('network')
    param('hostname')

    run do |opts, args|
      parser = cli.load_network(args[:network])
      rules = parser.ruleset_for(args[:hostname])
      policy = parser.policy_for(args[:hostname])

      formatter = Object.const_get("Puffy::Formatters::#{opts[:formatter]}::Ruleset").new
      puts formatter.emit_ruleset(rules, policy)
    end
  end

  puppet = @main.define_command do
    name    'puppet'
    usage   'puppet [options] <subcommand>'
    summary 'Run puppet actions'

    description <<~DESCRIPTION
      Manage a directory of firewall configurations files suitable for Puppet.
    DESCRIPTION

    required :o, :output, 'Base directory for network firewall rules', default: '.'

    run do |_opts, _args, cmd|
      puts cmd.help
      exit 0
    end
  end

  puppet.define_command do
    name    'diff'
    usage   'diff [options] <network>'
    summary 'Show differences between network specification and firewall rules'

    description <<~DESCRIPTION
      Show the changes that would be introduced by running `puffy puppet
      generate` with the current "network" specification file.
    DESCRIPTION

    param('network')

    run do |opts, args|
      parser = cli.load_network(args[:network])
      puppet = Puffy::Puppet.new(opts[:output], parser)
      puppet.diff
    end
  end

  puppet.define_command do
    name    'generate'
    usage   'generate [options] <network>'
    summary 'Generate network firewall rules according to network specification'

    description <<~DESCRIPTION
      Generate a tree of configuration files suitable for all supported
      firewalls for all the nodes described in the "network" specification
      file.
    DESCRIPTION

    param('network')

    run do |opts, args|
      parser = cli.load_network(args[:network])
      puppet = Puffy::Puppet.new(opts[:output], parser)
      puppet.save
    end
  end

  help_command = Cri::Command.new_basic_help.modify do
    summary 'Show help for a command'
  end

  @main.add_command(help_command)
end

Instance Method Details

#execute(argv) ⇒ Object 



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# File 'lib/puffy/cli.rb', line 128

def execute(argv)
  @main.run(argv)
end

#load_network(filename) ⇒ Object 



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# File 'lib/puffy/cli.rb', line 122

def load_network(filename)
  parser = Puffy::Parser.new
  parser.parse_file(filename)
  parser
end