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# Class: Vertx::WorkerExecutor

Inherits:
  Object
  - Object
  - Vertx::WorkerExecutor
  show all
Includes:
  Measured
Defined in:
  /Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/worker_executor.rb

## Overview

An executor for executing blocking code in Vert.x .

It provides the same `executeBlocking` operation than Context and Vertx but on a separate worker pool.

## Instance Method Summary (collapse)

- - (void) close
  Close the executor.
- - (void) execute_blocking(blockingCodeHandler = nil, ordered = nil) { ... }
  Safely execute some blocking code.
- - (true, false) metrics_enabled?
  Whether the metrics are enabled for this measured object.

## Instance Method Details

### - (`void`) close

This method returns an undefined value.

Close the executor.

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/worker_executor.rb', line 57

    def close
      if !block_given?
        return @j_del.java_method(:close, []).call()
      end
      raise ArgumentError, "Invalid arguments when calling close()"
    end

### - (`void`) execute_blocking(blockingCodeHandler = nil, ordered = nil) { ... }

This method returns an undefined value.

Safely execute some blocking code.

Executes the blocking code in the handler `blockingCodeHandler` using a thread from the worker pool.

When the code is complete the handler `resultHandler` will be called with the result on the original context (e.g. on the original event loop of the caller).

A `Future` instance is passed into `blockingCodeHandler`. When the blocking code successfully completes, the handler should call the Future#complete or Future#complete method, or the Future#fail method if it failed.

In the `blockingCodeHandler` the current context remains the original context and therefore any task scheduled in the `blockingCodeHandler` will be executed on the this context and not on the worker thread.

Parameters:

- blockingCodeHandler (`Proc`) (defaults to: `nil`) —
  handler representing the blocking code to run
- ordered (`true`, `false`) (defaults to: `nil`) —
  if true then if executeBlocking is called several times on the same context, the executions for that context will be executed serially, not in parallel. if false then they will be no ordering guarantees

Yields:

- handler that will be called when the blocking code is complete

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/worker_executor.rb', line 47

    def execute_blocking(blockingCodeHandler=nil,ordered=nil)
      if blockingCodeHandler.class == Proc && block_given? && ordered == nil
        return @j_del.java_method(:executeBlocking, [Java::IoVertxCore::Handler.java_class,Java::IoVertxCore::Handler.java_class]).call((Proc.new { |event| blockingCodeHandler.call(::Vertx::Util::Utils.safe_create(event,::Vertx::Future)) }),(Proc.new { |ar| yield(ar.failed ? ar.cause : nil, ar.succeeded ? ::Vertx::Util::Utils.from_object(ar.result) : nil) }))
      elsif blockingCodeHandler.class == Proc && (ordered.class == TrueClass || ordered.class == FalseClass) && block_given?
        return @j_del.java_method(:executeBlocking, [Java::IoVertxCore::Handler.java_class,Java::boolean.java_class,Java::IoVertxCore::Handler.java_class]).call((Proc.new { |event| blockingCodeHandler.call(::Vertx::Util::Utils.safe_create(event,::Vertx::Future)) }),ordered,(Proc.new { |ar| yield(ar.failed ? ar.cause : nil, ar.succeeded ? ::Vertx::Util::Utils.from_object(ar.result) : nil) }))
      end
      raise ArgumentError, "Invalid arguments when calling execute_blocking(blockingCodeHandler,ordered)"
    end

### - (`true`, `false`) metrics_enabled?

Whether the metrics are enabled for this measured object

Returns:

- (`true`, `false`) —
  true if the metrics are enabled

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx/worker_executor.rb', line 24

    def metrics_enabled?
      if !block_given?
        return @j_del.java_method(:isMetricsEnabled, []).call()
      end
      raise ArgumentError, "Invalid arguments when calling metrics_enabled?()"
    end