Class: Kube::Ctl::CommandTree

Inherits:
Object
  • Object
show all
Defined in:
lib/kube/ctl/command_tree.rb,
lib/kube/ctl/command_tree/node.rb,
lib/kube/ctl/command_tree/validator.rb

Defined Under Namespace

Classes: Node, Result, Validator

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ CommandTree

Returns a new instance of CommandTree.



20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
# File 'lib/kube/ctl/command_tree.rb', line 20

def initialize(data)
  @root = Node.new(name: 'kubectl')

  data.fetch('toplevelcommandgroups', []).each do |group|
    group.fetch('commands', []).each do |entry|
      main = entry['maincommand']
      next unless main
      node = build_node(main)
      (entry['subcommands'] || []).each do |sub|
        node.add_subcommand(build_node(sub))
      end
      @root.add_subcommand(node)
    end
  end
end

Instance Method Details

#evaluate(builder, resource_dataset: nil) ⇒ Object 



36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
 
# File 'lib/kube/ctl/command_tree.rb', line 36

def evaluate(builder, resource_dataset: nil)
  buffer = builder.to_a
  commands = []
  resources = []
  flags = []
  errors = []

  node = @root
  i = 0

  # 1. Walk commands/subcommands
  while i < buffer.length
    entry = buffer[i]
    break unless entry.is_a?(Array)
    name, args = entry
    break unless args.empty?

    child = node.find_subcommand(name)
    break unless child

    commands << name
    node = child
    i += 1

    # Consume :dash separated subcommand parts (e.g. set-last-applied)
    while i < buffer.length && buffer[i] == :dash
      next_i = i + 1
      break unless next_i < buffer.length && buffer[next_i].is_a?(Array)
      next_name, next_args = buffer[next_i]
      break unless next_args.empty?
      hyphenated = "#{commands.last}-#{next_name}"
      child = node.find_subcommand(hyphenated)
      if child
        commands[-1] = hyphenated
        node = child
        i = next_i + 1
      else
        break
      end
    end
  end

  if commands.empty? && buffer.any?
    first = buffer[0].is_a?(Array) ? buffer[0][0] : buffer[0].to_s
    errors << "invalid command start: `#{first}`"
  end

  # 2. Walk remaining buffer: classify as resources or flags
  current_resource = nil

  while i < buffer.length
    entry = buffer[i]

    case entry
    when :dash
      current_resource = "#{current_resource}-" if current_resource
      i += 1
    when :slash
      current_resource = "#{current_resource}/" if current_resource
      i += 1
    when Array
      name, args = entry

      if args.nil? || args.empty?
        # Bare token — resource segment
        if current_resource && !current_resource.end_with?("-") && !current_resource.end_with?("/")
          current_resource = "#{current_resource}.#{name}"
        elsif current_resource
          current_resource = "#{current_resource}#{name}"
        else
          current_resource = name
        end
        i += 1
      else
        # Has args — it's a flag
        flush_resource(resources, current_resource)
        current_resource = nil
        flag_name = name.tr("_", "-")

        if args == [true]
          flags << "--#{flag_name}"
        else
          value = args.map(&:to_s).join(",")
          flags << "--#{flag_name} #{value}"
        end
        i += 1
      end
    else
      i += 1
    end
  end

  flush_resource(resources, current_resource)

  # 3. Validate resources against dataset if provided
  if resource_dataset
    resources.each do |r|
      errors << "unknown resource: `#{r}`" unless resource_dataset.include?(r)
    end
  end

  Result.new(commands, resources, flags, errors, errors.empty?)
end