Class: Bolt::Plugin::Module

Inherits:
Object
  • Object
show all
Defined in:
lib/bolt/plugin/module.rb

Defined Under Namespace

Classes: InvalidPluginData

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mod:, context:, config:, **_opts) ⇒ Module

Returns a new instance of Module.



29
30
31
32
33
 
# File 'lib/bolt/plugin/module.rb', line 29

def initialize(mod:, context:, config:, **_opts)
  @module = mod
  @config = config
  @context = context
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



27
28
29
 
# File 'lib/bolt/plugin/module.rb', line 27

def config
  @config
end

Class Method Details

.load(name, modules, opts) ⇒ Object 



15
16
17
18
19
20
21
22
23
24
25
 
# File 'lib/bolt/plugin/module.rb', line 15

def self.load(name, modules, opts)
  mod = modules[name]
  if mod&.plugin?
    opts[:mod] = mod
    plugin = Bolt::Plugin::Module.new(opts)
    plugin.setup
    plugin
  else
    raise PluginError::Unknown, name
  end
end

Instance Method Details

#extract_task_parameter_schema ⇒ Object 



166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
 
# File 'lib/bolt/plugin/module.rb', line 166

def extract_task_parameter_schema
  # Get the intersection of expected types (using Set)
  type_set = @hook_map.each_with_object({}) do |(_hook, task), acc|
    next unless (schema = task['task'].metadata['parameters'])
    schema.each do |param, scheme|
      next unless scheme['type'].is_a?(String)
      scheme['type'] = Set.new([scheme['type']])
      if acc.dig(param, 'type').is_a?(Set)
        scheme['type'].merge(acc[param]['type'])
      end
    end
    acc.merge!(schema)
  end
  # Convert Set to string
  type_set.each do |_param, schema|
    next unless schema['type']
    schema['type'] = if schema['type'].size > 1
                       "Optional[Variant[#{schema['type'].to_a.join(', ')}]]"
                     else
                       "Optional[#{schema['type'].to_a.first}]"
                     end
  end
end

#find_hooks(hook_data) ⇒ Object

Raises:



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
139
140
141
142
143
144
145
146
147
 
# File 'lib/bolt/plugin/module.rb', line 110

def find_hooks(hook_data)
  raise InvalidPluginData.new("'hooks' must be a hash", name) unless hook_data.is_a?(Hash)

  hooks = {}
  # Load hooks specified in the config
  hook_data.each do |hook_name, hook_spec|
    unless hook_spec.is_a?(Hash) && hook_spec['task'].is_a?(String)
      msg = "Unexpected hook specification #{hook_spec.to_json} in #{@name} for hook #{hook_name}"
      raise InvalidPluginData.new(msg, name)
    end

    begin
      task = @context.get_validated_task(hook_spec['task'])
    rescue Bolt::Error => e
      msg = if e.kind == 'bolt/unknown-task'
              "Plugin #{name} specified an unkown task '#{hook_spec['task']}' for a hook"
            else
              "Plugin #{name} could not load task '#{hook_spec['task']}': #{e.message}"
            end
      raise InvalidPluginData.new(msg, name)
    end

    hooks[hook_name.to_sym] = { 'task' => task }
  end

  # Check for tasks for any hooks not already defined
  (Set.new(KNOWN_HOOKS.map) - hooks.keys).each do |hook_name|
    task_name = "#{name}::#{hook_name}"
    begin
      task = @context.get_validated_task(task_name)
    rescue Bolt::Error => e
      raise e unless e.kind == 'bolt/unknown-task'
    end
    hooks[hook_name] = { 'task' => task } if task
  end

  Bolt::Util.symbolize_top_level_keys(hooks)
end

#hooks ⇒ Object 



58
59
60
 
# File 'lib/bolt/plugin/module.rb', line 58

def hooks
  (@hook_map.keys + [:validate_resolve_reference]).uniq
end

#load_data ⇒ Object 



62
63
64
65
66
 
# File 'lib/bolt/plugin/module.rb', line 62

def load_data
  JSON.parse(File.read(@module.plugin_data_file))
rescue JSON::ParserError => e
  raise InvalidPluginData.new(e.message, name)
end

#name ⇒ Object 



54
55
56
 
# File 'lib/bolt/plugin/module.rb', line 54

def name
  @module.name
end

#process_params(task, opts) ⇒ Object 



153
154
155
156
157
158
159
160
161
162
163
164
 
# File 'lib/bolt/plugin/module.rb', line 153

def process_params(task, opts)
  # opts are passed directly from inventory but all of the _ options are
  # handled previously. That may not always be the case so filter them
  # out now.
  meta, params = opts.partition { |key, _val| key.start_with?('_') }.map(&:to_h)
  params = config.merge(params)
  validate_params(task, params)

  meta['_boltdir'] = @context.boltdir.to_s

  [params, meta]
end

#process_schema(schema) ⇒ Object

Raises:



68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
 
# File 'lib/bolt/plugin/module.rb', line 68

def process_schema(schema)
  raise InvalidPluginData.new('config specification is not an object', name) unless schema.is_a?(Hash)
  schema.each do |key, val|
    unless key =~ /\A[a-z][a-z0-9_]*\z/
      raise InvalidPluginData.new("config specification key, '#{key}',  is not allowed", name)
    end

    unless val.is_a?(Hash) && (val['type'] || '').is_a?(String)
      raise InvalidPluginData.new("config specification #{val.to_json} is not allowed", name)
    end

    type_string = val['type'] || 'Any'
    begin
      val['pcore_type'] = Puppet::Pops::Types::TypeParser.singleton.parse(type_string)
      if val['pcore_type'].is_a? Puppet::Pops::Types::PTypeReferenceType
        raise InvalidPluginData.new("Could not find type '#{type_string}' for #{key}", name)
      end
    rescue Puppet::ParseError
      raise InvalidPluginData.new("Could not parse type '#{type_string}' for #{key}", name)
    end
  end

  schema
end

#puppet_library(opts, target, apply_prep) ⇒ Object 



254
255
256
257
258
259
260
261
262
263
264
265
 
# File 'lib/bolt/plugin/module.rb', line 254

def puppet_library(opts, target, apply_prep)
  task = @hook_map[:puppet_library]['task']

  params, meta_params = process_params(task, opts)

  options = {}
  options[:run_as] = meta_params['_run_as'] if meta_params['_run_as']

  proc do
    apply_prep.run_task([target], task, params, options).first
  end
end

#resolve_reference(opts) ⇒ Object

These are all the same but are defined explicitly for clarity



238
239
240
 
# File 'lib/bolt/plugin/module.rb', line 238

def resolve_reference(opts)
  run_hook(__method__, opts)
end

#run_hook(hook_name, opts, value = true) ⇒ Object

Raises:



206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
 
# File 'lib/bolt/plugin/module.rb', line 206

def run_hook(hook_name, opts, value = true)
  hook = @hook_map[hook_name]
  # This shouldn't happen if the Plugin api is used
  raise PluginError::UnsupportedHook.new(name, hook_name) unless hook
  result = run_task(hook['task'], opts)

  if value
    unless result.include?('value')
      msg = "Plugin #{name} result did not include a value, got #{result}"
      raise Bolt::Plugin::PluginError::ExecutionError.new(msg, name, hook_name)
    end

    result['value']
  end
end

#run_task(task, opts) ⇒ Object

Raises:



190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
 
# File 'lib/bolt/plugin/module.rb', line 190

def run_task(task, opts)
  opts = opts.reject { |key, _val| key.start_with?('_') }
  params, metaparams = process_params(task, opts)
  params = params.merge(metaparams)

  # There are no executor options to pass now.
  options = { catch_errors: true }

  result = @context.run_local_task(task,
                                   params,
                                   options).first

  raise Bolt::Error.new(result.error_hash['msg'], result.error_hash['kind']) unless result.ok
  result.value
end

#secret_createkeys(opts = {}) ⇒ Object 



250
251
252
 
# File 'lib/bolt/plugin/module.rb', line 250

def secret_createkeys(opts = {})
  run_hook(__method__, opts)
end

#secret_decrypt(opts) ⇒ Object 



246
247
248
 
# File 'lib/bolt/plugin/module.rb', line 246

def secret_decrypt(opts)
  run_hook(__method__, opts)
end

#secret_encrypt(opts) ⇒ Object 



242
243
244
 
# File 'lib/bolt/plugin/module.rb', line 242

def secret_encrypt(opts)
  run_hook(__method__, opts)
end

#setup ⇒ Object

This method interacts with the module on disk so it’s separate from initialize



36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
 
# File 'lib/bolt/plugin/module.rb', line 36

def setup
  @data = load_data
  @hook_map = find_hooks(@data['hooks'] || {})

  if @data['config']
    msg = <<~MSG.chomp
      Found unsupported key 'config' in bolt_plugin.json. Config for a plugin is inferred
      from task parameters, with config values passed as parameters.
    MSG
    raise InvalidPluginData.new(msg, name)
  end

  # Validate againsts the intersection of all task schemas.
  @config_schema = process_schema(extract_task_parameter_schema)

  validate_config(@config, @config_schema)
end

#validate_config(config, config_schema) ⇒ Object 



93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
 
# File 'lib/bolt/plugin/module.rb', line 93

def validate_config(config, config_schema)
  config.each_key do |key|
    msg = "Config for #{name} plugin contains unexpected key #{key}"
    raise Bolt::ValidationError, msg unless config_schema.include?(key)
  end

  config_schema.each do |key, spec|
    val = config[key]

    unless spec['pcore_type'].instance?(val)
      raise Bolt::ValidationError, "#{name} plugin expects a #{spec['type']} for key #{key}, got: #{val}"
    end
    val.nil?
  end
  nil
end

#validate_params(task, params) ⇒ Object 



149
150
151
 
# File 'lib/bolt/plugin/module.rb', line 149

def validate_params(task, params)
  @context.validate_params(task.name, params)
end

#validate_resolve_reference(opts) ⇒ Object 



222
223
224
225
226
227
228
229
230
231
232
233
234
235
 
# File 'lib/bolt/plugin/module.rb', line 222

def validate_resolve_reference(opts)
  # Merge config with params
  merged = @config.merge(opts)
  params = merged.reject { |k, _v| k.start_with?('_') }

  sig = @hook_map[:resolve_reference]['task']
  if sig
    validate_params(sig, params)
  end

  if @hook_map.include?(:validate_resolve_reference)
    run_hook(:validate_resolve_reference, opts, false)
  end
end