Class: EventStoreClient::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/event_store_client/client.rb

Constant Summary collapse

NoCallMethodOnSubscriber = 
Class.new(StandardError)
WrongExpectedEventVersion = 
Class.new(StandardError)

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#connection ⇒ Object

rubocop:enable Metrics/CyclomaticComplexity



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# File 'lib/event_store_client/client.rb', line 85

def connection
  @connection
end

#service_name ⇒ Object

rubocop:enable Metrics/CyclomaticComplexity



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# File 'lib/event_store_client/client.rb', line 85

def service_name
  @service_name
end

Instance Method Details

rubocop:disable Metrics/CyclomaticComplexity



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# File 'lib/event_store_client/client.rb', line 76

def link_to(stream:, events:, expected_version: nil)
  raise ArgumentError if !stream || stream == ''
  raise ArgumentError if events.nil? || (events.is_a?(Array) && events.empty?)
  connection.link_to(stream, events, expected_version: expected_version)
rescue StoreAdapter::Api::Client::WrongExpectedEventVersion => e
  raise WrongExpectedEventVersion.new(e.message)
end

#poll(interval: 5) ⇒ Object 



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# File 'lib/event_store_client/client.rb', line 34

def poll(interval: 5)
  return if @polling_started
  @polling_started = true
  thread1 = Thread.new do
    loop do
      create_pid_file
      Thread.handle_interrupt(Interrupt => :never) do
        begin # rubocop:disable Style/RedundantBegin
          Thread.handle_interrupt(Interrupt => :immediate) do
            broker.call(subscriptions)
          end
        rescue Exception => e # rubocop:disable Lint/RescueException
          # When the thread had been interrupted or broker.call returned an error
          sleep(interval) # wait for events to be processed
          delete_pid_file
          error_handler&.call(e)
        ensure
          # this code is run always
          Thread.stop
        end
      end
    end
  end
  thread2 = Thread.new do
    loop do
      sleep 1
      break unless thread1.alive?
      thread1.run
    end
  end
  @threads = [thread1, thread2]
  nil
end

#publish(stream:, events:, expected_version: nil) ⇒ Object 



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# File 'lib/event_store_client/client.rb', line 10

def publish(stream:, events:, expected_version: nil)
  connection.append_to_stream(stream, events, expected_version: expected_version)
rescue StoreAdapter::Api::Client::WrongExpectedEventVersion => e
  raise WrongExpectedEventVersion.new(e.message)
end

#read(stream, direction: 'forward', start: 0, all: false, resolve_links: true) ⇒ Object 



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# File 'lib/event_store_client/client.rb', line 16

def read(stream, direction: 'forward', start: 0, all: false, resolve_links: true)
  if all
    connection.read_all_from_stream(
      stream, start: start, direction: direction, resolve_links: resolve_links
    )
  else
    connection.read(
      stream, start: start, direction: direction, resolve_links: resolve_links
    )
  end
end

#stop_polling ⇒ Object 



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# File 'lib/event_store_client/client.rb', line 68

def stop_polling
  return if @threads.none?
  @threads.each(&:kill)
  @polling_started = false
  nil
end

#subscribe(subscriber, to: [], polling: true) ⇒ Object

Raises:



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# File 'lib/event_store_client/client.rb', line 28

def subscribe(subscriber, to: [], polling: true)
  raise NoCallMethodOnSubscriber unless subscriber.respond_to?(:call)
  @subscriptions.create(subscriber, to)
  poll if polling
end