Class: RubyReactor::Executor

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_reactor/executor.rb,
lib/ruby_reactor/executor/graph_manager.rb,
lib/ruby_reactor/executor/retry_manager.rb,
lib/ruby_reactor/executor/step_executor.rb,
lib/ruby_reactor/executor/result_handler.rb,
lib/ruby_reactor/executor/input_validator.rb,
lib/ruby_reactor/executor/compensation_manager.rb

Overview

rubocop:disable Metrics/ClassLength

Defined Under Namespace

Classes: CompensationManager, GraphManager, InputValidator, ResultHandler, RetryManager, StepExecutor

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(reactor_class, inputs = {}, context = nil) ⇒ Executor

Returns a new instance of Executor.



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# File 'lib/ruby_reactor/executor.rb', line 17

def initialize(reactor_class, inputs = {}, context = nil)
  @reactor_class = reactor_class
  @context = context || Context.new(inputs, reactor_class)
  @middlewares = Executor.middlewares_for(reactor_class)
  @context.middlewares = @middlewares
  @dependency_graph = DependencyGraph.new
  @compensation_manager = CompensationManager.new(@context)
  @retry_manager = RetryManager.new(@context, @middlewares)
  @result_handler = ResultHandler.new(
    context: @context,
    compensation_manager: @compensation_manager,
    dependency_graph: @dependency_graph
  )
  @step_executor = StepExecutor.new(
    context: @context,
    dependency_graph: @dependency_graph,
    reactor_class: @reactor_class,
    managers: {
      retry_manager: @retry_manager,
      result_handler: @result_handler,
      compensation_manager: @compensation_manager,
      middlewares: @middlewares
    }
  )
  @result = nil
  @acquired_lock = nil
  @acquired_semaphore = nil
end

Instance Attribute Details

#compensation_manager ⇒ Object (readonly)

Returns the value of attribute compensation_manager.



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# File 'lib/ruby_reactor/executor.rb', line 14

def compensation_manager
  @compensation_manager
end

#context ⇒ Object (readonly)

Returns the value of attribute context.



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# File 'lib/ruby_reactor/executor.rb', line 14

def context
  @context
end

#dependency_graph ⇒ Object (readonly)

Returns the value of attribute dependency_graph.



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# File 'lib/ruby_reactor/executor.rb', line 14

def dependency_graph
  @dependency_graph
end

#middlewares ⇒ Object (readonly)

Returns the value of attribute middlewares.



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# File 'lib/ruby_reactor/executor.rb', line 14

def middlewares
  @middlewares
end

#reactor_class ⇒ Object (readonly)

Returns the value of attribute reactor_class.



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# File 'lib/ruby_reactor/executor.rb', line 14

def reactor_class
  @reactor_class
end

#result ⇒ Object (readonly)

Returns the value of attribute result.



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# File 'lib/ruby_reactor/executor.rb', line 14

def result
  @result
end

#result_handler ⇒ Object (readonly)

Returns the value of attribute result_handler.



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# File 'lib/ruby_reactor/executor.rb', line 14

def result_handler
  @result_handler
end

#retry_manager ⇒ Object (readonly)

Returns the value of attribute retry_manager.



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# File 'lib/ruby_reactor/executor.rb', line 14

def retry_manager
  @retry_manager
end

#step_executor ⇒ Object (readonly)

Returns the value of attribute step_executor.



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# File 'lib/ruby_reactor/executor.rb', line 14

def step_executor
  @step_executor
end

Class Method Details

.middlewares_for(reactor_class) ⇒ Object 



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# File 'lib/ruby_reactor/executor.rb', line 66

def self.middlewares_for(reactor_class)
  RubyReactor::MiddlewareRunner.new(resolve_middlewares(reactor_class))
end

.resolve_middlewares(reactor_class) ⇒ Object 



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# File 'lib/ruby_reactor/executor.rb', line 46

def self.resolve_middlewares(reactor_class)
  global_list = Array(RubyReactor.configuration.middlewares)
  reactor_list = if reactor_class.respond_to?(:middlewares)
                   Array(reactor_class.middlewares)
                 else
                   []
                 end

  (global_list + reactor_list).map do |mw|
    if mw.is_a?(Class)
      mw.new
    elsif mw.is_a?(Array) && mw.first.is_a?(Class)
      klass, opts = mw
      klass.new(**(opts || {}))
    else
      mw
    end
  end
end

Instance Method Details

#execute ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/ruby_reactor/executor.rb', line 70

def execute # rubocop:disable Metrics/MethodLength
  middlewares.on(:start_reactor, reactor_class.name, context.inputs, @context)
  completed = false

  if (skipped = check_period_gate)
    completed = true
    return finalize_skipped(skipped)
  end

  # Validate inputs BEFORE consuming a rate-limit slot or grabbing a
  # lock/semaphore: a run that can never start must not burn quota or
  # briefly block other callers.
  input_validator = InputValidator.new(@reactor_class, @context)
  input_validator.validate!

  acquire_locks_with_telemetry

  # Re-check the period gate now that we hold the lock. The pre-lock check
  # is a fast path; this one closes the race where two callers both passed
  # it and then serialized on the lock — without it the second caller would
  # re-run work the first already marked. (No-op when no lock is configured.)
  if (skipped = check_period_gate)
    completed = true
    return finalize_skipped(skipped)
  end

  @context.status = :running
  save_context

  graph_manager = GraphManager.new(@reactor_class, @dependency_graph, @context)
  graph_manager.build_and_validate!
  graph_manager.mark_completed_steps_from_context

  @result = @step_executor.execute_all_steps
  update_context_status(@result)
  mark_period_on_success(@result)
  handle_interrupt(@result) if @result.is_a?(RubyReactor::InterruptResult)
  completed = true
  @result
rescue RubyReactor::Lock::AcquisitionError,
       RubyReactor::Semaphore::AcquisitionError,
       RubyReactor::RateLimit::ExceededError,
       RubyReactor::RateLimitRegistry::UnknownLimitError => e
  raise e
rescue StandardError => e
  @result = @result_handler.handle_execution_error(e)
  update_context_status(@result)
  completed = true
  @result
ensure
  release_locks
  save_context if persist_context?

  if completed
    middlewares.on(:complete_reactor, reactor_class.name, @result, @context)
  else
    middlewares.on(:failed_reactor, reactor_class.name, $ERROR_INFO, @context)
  end
end

#execution_trace ⇒ Object 



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# File 'lib/ruby_reactor/executor.rb', line 206

def execution_trace
  @context.execution_trace
end

#persist_context? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruby_reactor/executor.rb', line 219

def persist_context?
  @context.status.to_s != "pending" ||
    @context.execution_trace.any? ||
    @context.intermediate_results.any?
end

#resume_execution ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/ruby_reactor/executor.rb', line 130

def resume_execution # rubocop:disable Metrics/MethodLength
  middlewares.on(:start_reactor, reactor_class.name, context.inputs, @context)
  completed = false
  # A fresh async reactor run reaches the worker through resume_execution
  # (it never calls execute), so the period and rate-limit gates that live
  # in execute must be applied here too. Genuine resumes (a step already ran
  # or we paused mid-flight, so current_step is set) must NOT re-gate: a
  # paused reactor must not throttle or skip itself on the way back in.
  first_run = first_execution?
  begin
    @context.status = :running

    if first_run && (skipped = check_period_gate)
      completed = true
      return finalize_skipped(skipped)
    end
    check_rate_limit if first_run

    acquire_concurrency_primitives

    # Post-lock re-check (see execute) — closes the period race for the
    # first run of a locked async reactor.
    if first_run && (skipped = check_period_gate)
      completed = true
      return finalize_skipped(skipped)
    end

    prepare_for_resume
    save_context

    @result = if @context.current_step
                execute_current_step_and_continue
              else
                execute_remaining_steps
              end

    update_context_status(@result)
    mark_period_on_success(@result)

    handle_interrupt(@result) if @result.is_a?(RubyReactor::InterruptResult)
    completed = true
    @result
  rescue RubyReactor::Lock::AcquisitionError,
         RubyReactor::Semaphore::AcquisitionError,
         RubyReactor::RateLimit::ExceededError,
         RubyReactor::RateLimitRegistry::UnknownLimitError
    raise
  rescue StandardError => e
    handle_resume_error(e)
    update_context_status(@result)
    completed = true
    @result
  ensure
    release_locks
    save_context

    if completed
      middlewares.on(:complete_reactor, reactor_class.name, @result, @context)
    else
      middlewares.on(:failed_reactor, reactor_class.name, $ERROR_INFO, @context)
    end
  end
end

#save_context ⇒ Object 



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# File 'lib/ruby_reactor/executor.rb', line 210

def save_context
  storage = RubyReactor::Configuration.instance.storage_adapter
  reactor_class_name = @reactor_class.name || "AnonymousReactor-#{@reactor_class.object_id}"

  # Serialize context
  serialized_context = ContextSerializer.serialize(@context)
  storage.store_context(@context.context_id, serialized_context, reactor_class_name)
end

#undo_all ⇒ Object 



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# File 'lib/ruby_reactor/executor.rb', line 194

def undo_all
  @compensation_manager.rollback_completed_steps
end

#undo_stack ⇒ Object 



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# File 'lib/ruby_reactor/executor.rb', line 198

def undo_stack
  @compensation_manager.undo_stack
end

#undo_trace ⇒ Object 



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# File 'lib/ruby_reactor/executor.rb', line 202

def undo_trace
  @compensation_manager.undo_trace
end