Class: Bolt::Applicator

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

Instance Method Summary collapse

Constructor Details

#initialize(inventory, executor, modulepath, plugin_dirs, project, pdb_client, hiera_config, max_compiles, apply_settings) ⇒ Applicator

Returns a new instance of Applicator.



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/bolt/applicator.rb', line 17

def initialize(inventory, executor, modulepath, plugin_dirs, project,
               pdb_client, hiera_config, max_compiles, apply_settings)
  # lazy-load expensive gem code
  require 'concurrent'
  @inventory = inventory
  @executor = executor
  @modulepath = modulepath || []
  @plugin_dirs = plugin_dirs
  @project = project
  @pdb_client = pdb_client
  @hiera_config = hiera_config ? validate_hiera_config(hiera_config) : nil
  @apply_settings = apply_settings || {}

  @pool = Concurrent::ThreadPoolExecutor.new(name: 'apply', max_threads: max_compiles)
  @logger = Bolt::Logger.logger(self)
end

Instance Method Details

#apply(args, apply_body, scope) ⇒ Object

Raises:

  • (ArgumentError) 


181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
 
# File 'lib/bolt/applicator.rb', line 181

def apply(args, apply_body, scope)
  raise(ArgumentError, 'apply requires a TargetSpec') if args.empty?
  raise(ArgumentError, 'apply requires at least one statement in the apply block') if apply_body.nil?
  type0 = Puppet.lookup(:pal_script_compiler).type('TargetSpec')
  Puppet::Pal.assert_type(type0, args[0], 'apply targets')

  @executor.report_function_call('apply')

  options = {}
  if args.count > 1
    type1 = Puppet.lookup(:pal_script_compiler).type('Hash[String, Data]')
    Puppet::Pal.assert_type(type1, args[1], 'apply options')
    options = args[1].transform_keys { |k| k.sub(/^_/, '').to_sym }
  end

  plan_vars = scope.to_hash(true, true)

  targets = @inventory.get_targets(args[0])

  apply_ast(apply_body, targets, options, plan_vars)
end

#apply_ast(raw_ast, targets, options, plan_vars = {}) ⇒ Object 



215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
 
# File 'lib/bolt/applicator.rb', line 215

def apply_ast(raw_ast, targets, options, plan_vars = {})
  ast = Puppet::Pops::Serialization::ToDataConverter.convert(raw_ast, rich_data: true, symbol_to_string: true)
  # Serialize as pcore for *Result* objects
  plan_vars = Puppet::Pops::Serialization::ToDataConverter.convert(plan_vars,
                                                                   rich_data: true,
                                                                   symbol_as_string: true,
                                                                   type_by_reference: true,
                                                                   local_reference: true)

  scope = {
    code_ast: ast,
    modulepath: @modulepath,
    project: @project.to_h,
    pdb_config: @pdb_client.instance(options[:puppetdb]).config.to_hash,
    hiera_config: @hiera_config,
    plan_vars: plan_vars,
    # This data isn't available on the target config hash
    config: @inventory.transport_data_get
  }.freeze
  description = options[:description] || 'apply catalog'

  required_modules = options[:required_modules].nil? ? nil : Array(options[:required_modules])
  if required_modules&.any?
    @logger.debug("Syncing only required modules: #{required_modules.join(',')}.")
  end

  @plugin_tarball = Concurrent::Delay.new do
    build_plugin_tarball do |mod|
      next unless required_modules.nil? || required_modules.include?(mod.name)
      search_dirs = []
      search_dirs << mod.plugins if mod.plugins?
      search_dirs << mod.pluginfacts if mod.pluginfacts?
      search_dirs << mod.files if mod.files?
      search_dirs << mod.scripts if mod.scripts?
      type_files = "#{mod.path}/types"
      search_dirs << type_files if File.exist?(type_files)
      search_dirs
    end
  end

  r = @executor.log_action(description, targets) do
    futures = targets.map do |target|
      Concurrent::Future.execute(executor: @pool) do
        Thread.current[:name] ||= Thread.current.name
        @executor.with_node_logging("Compiling manifest block", [target], :trace) do
          compile(target, scope)
        end
      end
    end

    result_promises = targets.zip(futures).flat_map do |target, future|
      @executor.queue_execute([target]) do |transport, batch|
        @executor.with_node_logging("Applying manifest block", batch) do
          catalog = future.value
          if future.rejected?
            batch.map do |batch_target|
              # If an unhandled exception occurred, wrap it in an ApplyError
              error = if future.reason.is_a?(Bolt::ApplyError)
                        future.reason
                      else
                        Bolt::ApplyError.new(batch_target, future.reason.message)
                      end

              result = Bolt::ApplyResult.new(batch_target, error: error.to_h)
              @executor.publish_event(type: :node_result, result: result)
              result
            end
          else
            arguments = {
              'catalog' => Puppet::Pops::Types::PSensitiveType::Sensitive.new(catalog),
              'plugins' => Puppet::Pops::Types::PSensitiveType::Sensitive.new(plugins),
              'apply_settings' => @apply_settings,
              # This should just be boltlib and modules dirs shipped with bolt packages
              # The apply_catalog task uses them to load core types if they exist
              'bolt_builtin_content' => @modulepath - @plugin_dirs,
              '_task' => catalog_apply_task.name,
              '_noop' => options[:noop]
            }

            callback = proc do |event|
              if event[:type] == :node_result
                event = event.merge(result: ApplyResult.from_task_result(event[:result], catalog))
              end
              @executor.publish_event(event)
            end
            # Respect the run_as default set on the executor
            options[:run_as] = @executor.run_as if @executor.run_as && !options.key?(:run_as)

            results = transport.batch_task(batch, catalog_apply_task, arguments, options, &callback)
            Array(results).map { |result| ApplyResult.from_task_result(result, catalog) }
          end
        end
      end
    end

    @executor.await_results(result_promises)
  end

  # Allow for report to exclude event metrics (apply_result doesn't require it to be present)
  resource_counts = r.ok_set.map { |result| result.event_metrics&.fetch('total') }.compact
  @executor.report_apply(count_statements(raw_ast), resource_counts)

  if !r.ok && !options[:catch_errors]
    raise Bolt::ApplyFailure, r
  end
  r
end

#build_plugin_tarball ⇒ Object 



328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
 
# File 'lib/bolt/applicator.rb', line 328

def build_plugin_tarball
  # lazy-load expensive gem code
  require 'minitar'
  require 'zlib'

  start_time = Time.now
  sio = StringIO.new
  output = Minitar::Output.new(Zlib::GzipWriter.new(sio))

  Puppet.lookup(:current_environment).override_with(modulepath: @plugin_dirs).modules.each do |mod|
    search_dirs = yield mod

    tar_dir = Pathname.new(mod.name) # goes great with fish
    mod_dir = Pathname.new(mod.path)
    files = Find.find(*search_dirs).select { |file| File.file?(file) }

    files.each do |file|
      tar_path = tar_dir + Pathname.new(file).relative_path_from(mod_dir)
      @logger.trace("Packing plugin #{file} to #{tar_path}")
      stat = File.stat(file)
      content = File.binread(file)
      output.tar.add_file_simple(
        tar_path.to_s,
        data: content,
        size: content.size,
        mode: stat.mode & 0o777,
        mtime: stat.mtime
      )
    end
  end

  duration = Time.now - start_time
  @logger.trace("Packed plugins in #{duration * 1000} ms")

  output.close
  Base64.encode64(sio.string)
ensure
  output&.close
end

#catalog_apply_task ⇒ Object 



51
52
53
54
55
56
57
58
59
60
61
62
 
# File 'lib/bolt/applicator.rb', line 51

def catalog_apply_task
  @catalog_apply_task ||= begin
    path = File.join(libexec, 'apply_catalog.rb')
    file = { 'name' => 'apply_catalog.rb', 'path' => path }
    metadata = { 'supports_noop' => true, 'input_method' => 'stdin',
                 'implementations' => [
                   { 'name' => 'apply_catalog.rb' },
                   { 'name' => 'apply_catalog.rb', 'remote' => true }
                 ] }
    Bolt::Task.new('apply_helpers::apply_catalog', metadata, [file])
  end
end

#compile(target, scope) ⇒ Object 



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
139
140
141
142
143
144
145
 
# File 'lib/bolt/applicator.rb', line 78

def compile(target, scope)
  # This simplified Puppet node object is what .local uses to determine the
  # certname of the target
  node = Puppet::Node.from_data_hash('name' => target.name,
                                     'parameters' => { 'clientcert' => target.name })
  trusted = Puppet::Context::TrustedInformation.local(node)
  target_data = {
    name: target.name,
    facts: @inventory.facts(target).merge('bolt' => true),
    variables: @inventory.vars(target),
    trusted: trusted.to_h
  }
  catalog_request = scope.merge(target: target_data).merge(future: @executor.future || {})

  bolt_catalog_exe = File.join(libexec, 'bolt_catalog')
  old_path = ENV['PATH']
  ENV['PATH'] = "#{RbConfig::CONFIG['bindir']}#{File::PATH_SEPARATOR}#{old_path}"
  out, err, stat = Open3.capture3('ruby', bolt_catalog_exe, 'compile', stdin_data: catalog_request.to_json)
  ENV['PATH'] = old_path

  # If bolt_catalog does not return valid JSON, we should print stderr to
  # see what happened
  print_logs = stat.success?
  result = begin
    JSON.parse(out)
  rescue JSON::ParserError
    print_logs = true
    { 'message' => "Something's gone terribly wrong! STDERR is logged." }
  end

  # Any messages logged by Puppet will be on stderr as JSON hashes, so we
  # parse those and store them here. Any message on stderr that is not
  # properly JSON formatted is assumed to be an error message.  If
  # compilation was successful, we print the logs as they may include
  # important warnings. If compilation failed, we don't print the logs as
  # they are likely redundant with the error that caused the failure, which
  # will be handled separately.
  logs = err.lines.map do |line|
    JSON.parse(line)
  rescue JSON::ParserError
    { 'level' => 'err', 'message' => line }
  end

  if print_logs
    logs.each do |log|
      bolt_level = Bolt::Util::PuppetLogLevel::MAPPING[log['level'].to_sym]
      message = log['message'].chomp

      case bolt_level
      when :warn
        handle_warning(target, message)
      else
        @logger.send(bolt_level, "#{target.name}: #{message}")
      end
    end
  end

  unless stat.success?
    message = if @apply_settings['trace'] && result['backtrace']
                ([result['message']] + result['backtrace']).join("\n  ")
              else
                result['message']
              end
    raise ApplyError.new(target.name, message)
  end

  result
end

#count_statements(ast) ⇒ Object

Count the number of top-level statements in the AST.



204
205
206
207
208
209
210
211
212
213
 
# File 'lib/bolt/applicator.rb', line 204

def count_statements(ast)
  case ast
  when Puppet::Pops::Model::Program
    count_statements(ast.body)
  when Puppet::Pops::Model::BlockExpression
    ast.statements.count
  else
    1
  end
end

#custom_facts_task ⇒ Object 



38
39
40
41
42
43
44
45
46
47
48
49
 
# File 'lib/bolt/applicator.rb', line 38

def custom_facts_task
  @custom_facts_task ||= begin
    path = File.join(libexec, 'custom_facts.rb')
    file = { 'name' => 'custom_facts.rb', 'path' => path }
    metadata = { 'supports_noop' => true, 'input_method' => 'stdin',
                 'implementations' => [
                   { 'name' => 'custom_facts.rb' },
                   { 'name' => 'custom_facts.rb', 'remote' => true }
                 ] }
    Bolt::Task.new('apply_helpers::custom_facts', metadata, [file])
  end
end

#plugins ⇒ Object 



323
324
325
326
 
# File 'lib/bolt/applicator.rb', line 323

def plugins
  @plugin_tarball.value ||
    raise(Bolt::Error.new("Failed to pack module plugins: #{@plugin_tarball.reason}", 'bolt/plugin-error'))
end

#query_resources_task ⇒ Object 



64
65
66
67
68
69
70
71
72
73
74
75
76
 
# File 'lib/bolt/applicator.rb', line 64

def query_resources_task
  @query_resources_task ||= begin
    path = File.join(libexec, 'query_resources.rb')
    file = { 'name' => 'query_resources.rb', 'path' => path }
    metadata = { 'supports_noop' => true, 'input_method' => 'stdin',
                 'implementations' => [
                   { 'name' => 'query_resources.rb' },
                   { 'name' => 'query_resources.rb', 'remote' => true }
                 ] }

    Bolt::Task.new('apply_helpers::query_resources', metadata, [file])
  end
end

#validate_hiera_config(hiera_config) ⇒ Object 



163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
 
# File 'lib/bolt/applicator.rb', line 163

def validate_hiera_config(hiera_config)
  if File.exist?(File.path(hiera_config))
    data = File.open(File.path(hiera_config), "r:UTF-8") do |f|
      if Psych.method(:safe_load).parameters.rassoc(:permitted_classes)
        YAML.safe_load(f.read, permitted_classes: [Symbol])
      else
        YAML.safe_load(f.read, [Symbol])
      end
    end
    if data.nil?
      return nil
    elsif data['version'] != 5
      raise Bolt::ParseError, "Hiera v5 is required, found v#{data['version'] || 3} in #{hiera_config}"
    end
    hiera_config
  end
end