Class: RedisClient::Cluster::Pipeline

Inherits:
Object
  • Object
show all
Defined in:
lib/redis_client/cluster/pipeline.rb

Defined Under Namespace

Classes: Extended, RedirectionNeeded, StaleClusterState

Constant Summary collapse

ReplySizeError = 
Class.new(::RedisClient::Cluster::Error)

Instance Method Summary collapse

Constructor Details

#initialize(router, command_builder, concurrent_worker, exception:, seed: Random.new_seed) ⇒ Pipeline

Returns a new instance of Pipeline.



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# File 'lib/redis_client/cluster/pipeline.rb', line 122

def initialize(router, command_builder, concurrent_worker, exception:, seed: Random.new_seed)
  @router = router
  @command_builder = command_builder
  @concurrent_worker = concurrent_worker
  @exception = exception
  @seed = seed
  @pipelines = nil
  @size = 0
end

Instance Method Details

#blocking_call(timeout, *args, **kwargs, &block) ⇒ Object 



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# File 'lib/redis_client/cluster/pipeline.rb', line 156

def blocking_call(timeout, *args, **kwargs, &block)
  command = @command_builder.generate(args, kwargs)
  node_key = @router.find_node_key(command, seed: @seed)
  append_pipeline(node_key).blocking_call_v(timeout, command, &block)
end

#blocking_call_v(timeout, args, &block) ⇒ Object 



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# File 'lib/redis_client/cluster/pipeline.rb', line 162

def blocking_call_v(timeout, args, &block)
  command = @command_builder.generate(args)
  node_key = @router.find_node_key(command, seed: @seed)
  append_pipeline(node_key).blocking_call_v(timeout, command, &block)
end

#call(*args, **kwargs, &block) ⇒ Object 



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# File 'lib/redis_client/cluster/pipeline.rb', line 132

def call(*args, **kwargs, &block)
  command = @command_builder.generate(args, kwargs)
  node_key = @router.find_node_key(command, seed: @seed)
  append_pipeline(node_key).call_v(command, &block)
end

#call_once(*args, **kwargs, &block) ⇒ Object 



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# File 'lib/redis_client/cluster/pipeline.rb', line 144

def call_once(*args, **kwargs, &block)
  command = @command_builder.generate(args, kwargs)
  node_key = @router.find_node_key(command, seed: @seed)
  append_pipeline(node_key).call_once_v(command, &block)
end

#call_once_v(args, &block) ⇒ Object 



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# File 'lib/redis_client/cluster/pipeline.rb', line 150

def call_once_v(args, &block)
  command = @command_builder.generate(args)
  node_key = @router.find_node_key(command, seed: @seed)
  append_pipeline(node_key).call_once_v(command, &block)
end

#call_v(args, &block) ⇒ Object 



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# File 'lib/redis_client/cluster/pipeline.rb', line 138

def call_v(args, &block)
  command = @command_builder.generate(args)
  node_key = @router.find_node_key(command, seed: @seed)
  append_pipeline(node_key).call_v(command, &block)
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/redis_client/cluster/pipeline.rb', line 168

def empty?
  @size.zero?
end

#execute ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity



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# File 'lib/redis_client/cluster/pipeline.rb', line 172

def execute # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
  return if @pipelines.nil? || @pipelines.empty?

  work_group = @concurrent_worker.new_group(size: @pipelines.size)

  @pipelines.each do |node_key, pipeline|
    work_group.push(node_key, @router.find_node(node_key), pipeline) do |cli, pl|
      replies = do_pipelining(cli, pl)
      raise ReplySizeError, "commands: #{pl._size}, replies: #{replies.size}" if pl._size != replies.size

      replies
    end
  end

  all_replies = errors = required_redirections = cluster_state_errors = nil

  work_group.each do |node_key, v|
    case v
    when ::RedisClient::Cluster::Pipeline::RedirectionNeeded
      required_redirections ||= {}
      required_redirections[node_key] = v
    when ::RedisClient::Cluster::Pipeline::StaleClusterState
      cluster_state_errors ||= {}
      cluster_state_errors[node_key] = v
    when StandardError
      cluster_state_errors ||= {} if v.is_a?(::RedisClient::ConnectionError)
      errors ||= {}
      errors[node_key] = v
    else
      all_replies ||= Array.new(@size)
      @pipelines[node_key].outer_indices.each_with_index { |outer, inner| all_replies[outer] = v[inner] }
    end
  end

  work_group.close
  @router.renew_cluster_state if cluster_state_errors
  raise ::RedisClient::Cluster::ErrorCollection.with_errors(errors).with_config(@router.config) unless errors.nil?

  required_redirections&.each do |node_key, v|
    raise v.first_exception if v.first_exception

    all_replies ||= Array.new(@size)
    pipeline = @pipelines[node_key]
    v.indices.each { |i| v.replies[i] = handle_redirection(v.replies[i], pipeline, i) }
    pipeline.outer_indices.each_with_index { |outer, inner| all_replies[outer] = v.replies[inner] }
  end

  cluster_state_errors&.each do |node_key, v|
    raise v.first_exception if v.first_exception

    all_replies ||= Array.new(@size)
    @pipelines[node_key].outer_indices.each_with_index { |outer, inner| all_replies[outer] = v.replies[inner] }
  end

  all_replies
end