Class: ConfCtl::Cli::Configuration

Inherits:

Command

• Object
• Command
• ConfCtl::Cli::Configuration

Defined in:

lib/confctl/cli/configuration.rb

Constant Summary

DIR_MODE =

0o755

FILE_MODE =

0o644

Instance Attribute Summary

Attributes inherited from Command

#args, #gopts, #opts

Instance Method Summary

• #add ⇒ Object
• #init ⇒ Object
• #rediscover ⇒ Object
• #rename ⇒ Object

Methods inherited from Command

#ask_action, #ask_confirmation, #ask_confirmation!, #initialize, #require_args!, run, #run_method, #use_color?, #use_pager?

Constructor Details

This class inherits a constructor from ConfCtl::Cli::Command

Instance Method Details

#add ⇒ Object

# File 'lib/confctl/cli/configuration.rb', line 161

def add
  require_args!('name')

  name = args[0]
  dir = File.join('cluster', name)
  depth = name.count('/')

  raise "#{dir} already exists" if Dir.exist?(dir)

  mkdir_p(dir)

  mkfile(File.join(dir, 'module.nix')) do |f|
    f.puts(<<~END
      { config, ... }:
      {
        cluster."#{name}" = {
          spin = "nixos";
          swpins.channels = [ "nixos-unstable" ];
          host = { name = "machine"; domain = "example.com"; };
        };
      }
    END
          )
  end

  mkfile(File.join(dir, 'config.nix')) do |f|
    f.puts(<<~END
      { config, pkgs, lib, ... }:
      {
        imports = [
          #{'../' * (depth + 2)}environments/base.nix
        ];

        # ... standard NixOS configuration ...

        networking.hostName = "#{name.gsub('/', '-')}";
      }
    END
          )
  end

  rediscover
end

#init ⇒ Object

# File 'lib/confctl/cli/configuration.rb', line 12

def init
  dir = File.realpath(Dir.pwd)

  Dir.entries(dir).each do |v|
    raise 'init must be called in an empty directory' unless %w[. .. shell.nix .confctl .gems
                                                                .gitignore].include?(v)
  end

  mkdir('cluster')

  mkfile('cluster/module-list.nix') do |f|
    f.puts(<<~END
      (import ./cluster.nix) ++ [
        # Place for custom modules
      ]
    END
          )
  end

  mkfile('cluster/cluster.nix') do |f|
    f.puts(<<~END
      # This file is generated by confctl, changes will be lost
      []
    END
          )
  end

  mkdir('configs')
  mkfile('configs/confctl.nix') do |f|
    f.puts(<<~END
      { config, ... }:
      {
        confctl = {
          # listColumns = {
          #   "name"
          #   "spin"
          #   "host.fqdn"
          # };
        };
      }
    END
          )
  end

  mkfile('configs/swpins.nix') do |f|
    f.puts(<<~END
      { config, ... }:
      let
        nixpkgsBranch = branch: {
          type = "git-rev";

          git-rev = {
            url = "https://github.com/NixOS/nixpkgs";
            update.ref = "refs/heads/${branch}";
          };
        };

        vpsadminosBranch = branch: {
          type = "git-rev";

          git-rev = {
            url = "https://github.com/vpsfreecz/vpsadminos";
            update.ref = "refs/heads/${branch}";
          };
        };
      in {
        confctl.swpins.channels = {
          nixos-unstable = { nixpkgs = nixpkgsBranch "nixos-unstable"; };

          # nixos-stable = { nixpkgs = nixpkgsBranch "nixos-20.09"; };

          # vpsadminos-staging = { vpsadminos = vpsadminosBranch "staging"; };
        };
      }
    END
          )
  end

  mkdir('data')

  mkfile('data/default.nix') do |f|
    f.puts(<<~END
      { lib }:
      {
        # Place to load custom data sets
        sshKeys = import ./ssh-keys.nix;
      }
    END
          )
  end

  mkfile('data/ssh-keys.nix') do |f|
    f.puts(<<~END
      rec {
        admins = [
          # someone
        ];

        someone = "...ssh public key...";
      }
    END
          )
  end

  mkdir('environments')

  mkfile('environments/base.nix') do |f|
    f.puts(<<~END
      { config, pkgs, confData, ... }:
      {
        time.timeZone = "Europe/Amsterdam";

        services.openssh.enable = true;

        environment.systemPackages = with pkgs; [
          vim
          screen
        ];

        users.users.root.openssh.authorizedKeys.keys = with confData.sshKeys; admins;
      }
    END
          )
  end

  mkdir('modules')
  mkfile('modules/module-list.nix') do |f|
    f.puts(<<~END
      rec {
        shared = [
          # Modules not dependent on spin
        ];

        nixos = shared ++ [
          # Modules only for NixOS
        ];

        vpsadminos = shared ++ [
          # Modules only for vpsAdminOS
        ];
      }
    END
          )
  end

  mkdir('swpins')
  mkdir('swpins/channels')
end

#rediscover ⇒ Object

# File 'lib/confctl/cli/configuration.rb', line 231

def rediscover
  hosts = discover_dir('cluster').sort

  replace_file('cluster/cluster.nix') do |f|
    f.puts('# This file is generated by confctl, changes will be lost')
    f.puts('[')

    hosts.each do |host|
      f.puts("  ./#{host}/module.nix")
    end

    f.puts(']')
  end

  ConfCtl::Hook.call(:configuration_rediscover)
end

#rename ⇒ Object

# File 'lib/confctl/cli/configuration.rb', line 205

def rename
  require_args!('old-name', 'new-name')

  src = args[0]
  dst = args[1]

  src_path = File.join('cluster', src)
  dst_path = File.join('cluster', dst)

  if !Dir.exist?(src_path)
    raise "'#{src}' not found"
  elsif Dir.exist?(dst_path)
    raise "'#{dst}' already exists"
  end

  dst_dir = File.dirname(dst_path)
  mkdir_p(dst_dir)
  mv(src_path, dst_path)

  src_swpins = File.join('swpins/cluster', "#{src.gsub('/', ':')}.json")
  dst_swpins = File.join('swpins/cluster', "#{dst.gsub('/', ':')}.json")
  mv(src_swpins, dst_swpins) if File.exist?(src_swpins)

  rediscover
end