Module: Legion::Runner

Defined in:
lib/legion/runner.rb,
lib/legion/runner/log.rb,
lib/legion/runner/status.rb

Defined Under Namespace

Modules: Log, Status

Class Method Summary collapse

Class Method Details

.derive_lex_tag(runner_class) ⇒ Object



104
105
106
107
108
109
110
111
112
113
# File 'lib/legion/runner.rb', line 104

def self.derive_lex_tag(runner_class)
  name = runner_class.is_a?(String) ? runner_class : runner_class.to_s
  parts = name.split('::')
  ext_idx = parts.index('Extensions')
  return parts.last.downcase unless ext_idx && parts[ext_idx + 1]

  parts[ext_idx + 1].gsub(/([A-Z]+)([A-Z][a-z])/, '\1_\2')
                    .gsub(/([a-z\d])([A-Z])/, '\1_\2')
                    .downcase
end

.run(runner_class:, function:, task_id: nil, args: nil, check_subtask: true, generate_task: true, parent_id: nil, master_id: nil, catch_exceptions: false, **opts) ⇒ Object

rubocop:disable Layout/LineLength, Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/ParameterLists, Metrics/MethodLength, Metrics/PerceivedComplexity



11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
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
# File 'lib/legion/runner.rb', line 11

def self.run(runner_class:, function:, task_id: nil, args: nil, check_subtask: true, generate_task: true, parent_id: nil, master_id: nil, catch_exceptions: false, **opts) # rubocop:disable Layout/LineLength, Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/ParameterLists, Metrics/MethodLength, Metrics/PerceivedComplexity
  started_at = ::Process.clock_gettime(::Process::CLOCK_MONOTONIC)
  lex_tag = derive_lex_tag(runner_class)
  rlog = runner_logger(lex_tag)
  rlog.info "[Runner] start: #{runner_class}##{function} task_id=#{task_id}"
  runner_class = Kernel.const_get(runner_class) if runner_class.is_a? String

  if task_id.nil? && generate_task
    task_gen = Legion::Runner::Status.generate_task_id(
      function: function,
      runner_class: runner_class,
      parent_id: parent_id, master_id: master_id, task_id: task_id, **opts
    )
    task_id = task_gen[:task_id] unless task_gen.nil?
  end

  args = opts if args.nil?
  args[:task_id] = task_id unless task_id.nil?
  args[:master_id] = master_id unless master_id.nil?
  args[:parent_id] = parent_id unless parent_id.nil?

  # result = Fiber.new { Fiber.yield runner_class.send(function, **args) }
  raise 'No Function defined' if function.nil?

  result = nil
  status = nil
  Legion::Context.with_task_context(opts.merge(task_id: task_id, function: function, runner_class: runner_class.to_s)) do
    result = if runner_class.respond_to?(:with_log_context)
               runner_class.with_log_context(function) { runner_class.send(function, **args) }
             else
               runner_class.send(function, **args)
             end
  rescue Legion::Exception::HandledTask => e
    rlog.debug "[Runner] HandledTask raised in #{runner_class}##{function}: #{e.message}"
    status = 'task.exception'
    result = { error: {} }
  rescue StandardError => e
    rlog.error "[Runner] exception in #{runner_class}##{function}: #{e.message}"
    status = 'task.exception'
    result = { success: false, status: status, error: { message: e.message, backtrace: e.backtrace } }
    if runner_class.respond_to?(:handle_runner_exception)
      begin
        runner_class.handle_runner_exception(e,
                                             **opts,
                                             runner_class:  runner_class,
                                             args:          args,
                                             function:      function,
                                             task_id:       task_id,
                                             generate_task: generate_task,
                                             check_subtask: check_subtask)
      rescue Legion::Exception::HandledTask => handled
        rlog.debug "[Runner] HandledTask raised while handling exception in #{runner_class}##{function}: #{handled.message}"
      end
    end
    raise e unless catch_exceptions
  end
ensure
  status = 'task.completed' if status.nil?
  duration_ms = ((::Process.clock_gettime(::Process::CLOCK_MONOTONIC) - started_at) * 1000).round
  rlog.info "[Runner] complete: #{runner_class}##{function} status=#{status} duration_ms=#{duration_ms}"
  Legion::Events.emit("task.#{status == 'task.completed' ? 'completed' : 'failed'}",
                      task_id: task_id, runner_class: runner_class.to_s, function: function, status: status)
  Legion::Runner::Status.update(task_id: task_id, status: status) unless task_id.nil?
  if check_subtask && status == 'task.completed'
    Legion::Transport::Messages::CheckSubtask.new(runner_class:  runner_class,
                                                  function:      function,
                                                  result:        result,
                                                  original_args: args,
                                                  task_id:       task_id,
                                                  master_id:     master_id,
                                                  **opts).publish
  end
  if defined?(Legion::Audit)
    begin
      error_message = status == 'task.exception' ? result&.dig(:error, :message) : nil
      Legion::Audit.record(
        event_type:     'runner_execution',
        principal_id:   opts[:principal_id] || opts[:worker_id] || 'system',
        principal_type: opts[:principal_type] || 'system',
        action:         'execute',
        resource:       "#{runner_class}/#{function}",
        source:         opts[:source] || 'unknown',
        status:         status == 'task.completed' ? 'success' : 'failure',
        duration_ms:    duration_ms,
        detail:         { task_id: task_id, error: error_message }
      )
    rescue StandardError => e
      rlog.debug("Audit in runner.run failed: #{e.message}")
    end
  end
  return { success: true, status: status, result: result, task_id: task_id } # rubocop:disable Lint/EnsureReturn
end

.runner_logger(tag) ⇒ Object



115
116
117
118
# File 'lib/legion/runner.rb', line 115

def self.runner_logger(tag)
  @runner_loggers ||= {}
  @runner_loggers[tag] ||= Legion::Logging::Logger.new(lex: tag)
end