Class: Bolt::PAL::YamlPlan::Step

Inherits:
Object
  • Object
show all
Defined in:
lib/bolt/pal/yaml_plan/step.rb,
lib/bolt/pal/yaml_plan/step/eval.rb,
lib/bolt/pal/yaml_plan/step/plan.rb,
lib/bolt/pal/yaml_plan/step/task.rb,
lib/bolt/pal/yaml_plan/step/script.rb,
lib/bolt/pal/yaml_plan/step/upload.rb,
lib/bolt/pal/yaml_plan/step/command.rb,
lib/bolt/pal/yaml_plan/step/resources.rb

Direct Known Subclasses

Command, Eval, Plan, Resources, Script, Task, Upload

Defined Under Namespace

Classes: Command, Eval, Plan, Resources, Script, Task, Upload

Constant Summary collapse

STEP_KEYS = 
%w[command script task plan source destination eval resources].freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(step_body) ⇒ Step

Returns a new instance of Step.



37
38
39
40
41
42
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 37

def initialize(step_body)
  @name = step_body['name']
  @description = step_body['description']
  @targets = step_body['targets'] || step_body['target']
  @body = step_body
end

Instance Attribute Details

#body ⇒ Object (readonly)

Returns the value of attribute body.



9
10
11
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 9

def body
  @body
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



9
10
11
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 9

def name
  @name
end

#targets ⇒ Object (readonly)

Returns the value of attribute targets.



9
10
11
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 9

def targets
  @targets
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



9
10
11
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 9

def type
  @type
end

Class Method Details

.allowed_keys ⇒ Object 



11
12
13
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 11

def self.allowed_keys
  Set['name', 'description', 'target', 'targets']
end

.create(step_body, step_number) ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 17

def self.create(step_body, step_number)
  type_keys = (STEP_KEYS & step_body.keys)
  case type_keys.length
  when 0
    raise step_error("No valid action detected", step_body['name'], step_number)
  when 1
    type = type_keys.first
  else
    if type_keys.to_set == Set['source', 'destination']
      type = 'upload'
    else
      raise step_error("Multiple action keys detected: #{type_keys.inspect}", step_body['name'], step_number)
    end
  end

  step_class = const_get("Bolt::PAL::YamlPlan::Step::#{type.capitalize}")
  step_class.validate(step_body, step_number)
  step_class.new(step_body)
end

.parse_code_string(code, quote = false) ⇒ Object

Parses the an evaluable string, optionally quote it before parsing



134
135
136
137
138
139
140
141
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 134

def self.parse_code_string(code, quote = false)
  if quote
    quoted = Puppet::Pops::Parser::EvaluatingParser.quote(code)
    Puppet::Pops::Parser::EvaluatingParser.new.parse_string(quoted)
  else
    Puppet::Pops::Parser::EvaluatingParser.new.parse_string(code)
  end
end

.step_error(message, name, step_number) ⇒ Object 



127
128
129
130
131
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 127

def self.step_error(message, name, step_number)
  identifier = name ? name.inspect : "number #{step_number}"
  error = "Parse error in step #{identifier}: \n #{message}"
  Bolt::Error.new(error, 'bolt/invalid-plan')
end

.validate(body, step_number) ⇒ Object 



48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 48

def self.validate(body, step_number)
  validate_step_keys(body, step_number)

  begin
    body.each { |k, v| validate_puppet_code(k, v) }
  rescue Bolt::Error => e
    raise step_error(e.msg, body['name'], step_number)
  end

  unless body.fetch('parameters', {}).is_a?(Hash)
    msg = "Parameters key must be a hash"
    raise step_error(msg, body['name'], step_number)
  end

  if body.key?('name')
    name = body['name']
    unless name.is_a?(String) && name.match?(Bolt::PAL::YamlPlan::VAR_NAME_PATTERN)
      error_message = "Invalid step name: #{name.inspect}"
      raise step_error(error_message, body['name'], step_number)
    end
  end
end

.validate_puppet_code(step_key, value) ⇒ Object

Recursively ensure all puppet code can be parsed



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
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 100

def self.validate_puppet_code(step_key, value)
  case value
  when Array
    value.map { |element| validate_puppet_code(step_key, element) }
  when Hash
    value.each_with_object({}) do |(k, v), o|
      key = k.is_a?(Bolt::PAL::YamlPlan::EvaluableString) ? k.value : k
      o[key] = validate_puppet_code(key, v)
    end
    # CodeLiterals can be parsed directly
  when Bolt::PAL::YamlPlan::CodeLiteral
    parse_code_string(value.value)
    # BareString is parsed directly if it starts with '$'
  when Bolt::PAL::YamlPlan::BareString
    if value.value.start_with?('$')
      parse_code_string(value.value)
    else
      parse_code_string(value.value, true)
    end
  when Bolt::PAL::YamlPlan::EvaluableString
    # Must quote parsed strings to evaluate them
    parse_code_string(value.value, true)
  end
rescue Puppet::Error => e
  raise Bolt::Error.new("Error parsing #{step_key.inspect}: #{e.basic_message}", "bolt/invalid-plan")
end

.validate_step_keys(body, step_number) ⇒ Object 



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
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 71

def self.validate_step_keys(body, step_number)
  step_type = name.split('::').last.downcase

  # For validated step action, ensure only valid keys
  illegal_keys = body.keys.to_set - allowed_keys
  if illegal_keys.any?
    error_message = "The #{step_type.inspect} step does not support: #{illegal_keys.to_a.inspect} key(s)"
    err = step_error(error_message, body['name'], step_number)
    raise Bolt::Error.new(err, "bolt/invalid-plan")
  end

  # Ensure all required keys are present
  missing_keys = required_keys - body.keys

  # Handle cases where steps with a required 'targets' key are using the deprecated
  # 'target' key instead.
  # TODO: Remove this when 'target' is removed
  if body.include?('target')
    missing_keys -= ['targets']
  end

  if missing_keys.any?
    error_message = "The #{step_type.inspect} step requires: #{missing_keys.to_a.inspect} key(s)"
    err = step_error(error_message, body['name'], step_number)
    raise Bolt::Error.new(err, "bolt/invalid-plan")
  end
end

Instance Method Details

#function_call(function, args) ⇒ Object 



143
144
145
146
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 143

def function_call(function, args)
  code_args = args.map { |arg| Bolt::Util.to_code(arg) }
  "#{function}(#{code_args.join(', ')})"
end

#transpile ⇒ Object

Raises:

  • (NotImplementedError) 


44
45
46
 
# File 'lib/bolt/pal/yaml_plan/step.rb', line 44

def transpile
  raise NotImplementedError, "Step #{@name} does not supported conversion to Puppet plan language"
end