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3ba0eec20c
* Use separate stream handler builders for easy override and testing. * Fix worker pool execution that was silently failing since it only expected connection receivers. Sparked by code in #24162.
71 lines
1.7 KiB
Ruby
71 lines
1.7 KiB
Ruby
require 'active_support/callbacks'
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require 'active_support/core_ext/module/attribute_accessors_per_thread'
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require 'concurrent'
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module ActionCable
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module Server
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# Worker used by Server.send_async to do connection work in threads.
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class Worker # :nodoc:
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include ActiveSupport::Callbacks
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thread_mattr_accessor :connection
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define_callbacks :work
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include ActiveRecordConnectionManagement
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attr_reader :executor
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def initialize(max_size: 5)
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@executor = Concurrent::ThreadPoolExecutor.new(
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min_threads: 1,
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max_threads: max_size,
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max_queue: 0,
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)
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end
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# Stop processing work: any work that has not already started
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# running will be discarded from the queue
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def halt
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@executor.kill
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end
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def stopping?
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@executor.shuttingdown?
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end
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def work(connection)
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self.connection = connection
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run_callbacks :work do
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yield
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end
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ensure
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self.connection = nil
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end
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def async_invoke(receiver, method, *args, connection: receiver)
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@executor.post do
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invoke(receiver, method, *args, connection: connection)
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end
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end
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def invoke(receiver, method, *args, connection:)
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work(connection) do
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begin
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receiver.send method, *args
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rescue Exception => e
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logger.error "There was an exception - #{e.class}(#{e.message})"
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logger.error e.backtrace.join("\n")
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receiver.handle_exception if receiver.respond_to?(:handle_exception)
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end
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end
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end
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private
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def logger
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ActionCable.server.logger
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end
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end
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end
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end
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