Elixir Broadway如何从SQS发送和接收消息

问题描述 投票:0回答:1

我已成功创建与AWS SQS的连接。这是我的代码:

def start_link(_opts) do
    Broadway.start_link(__MODULE__,
      name: __MODULE__,
      producers: [
        default: [
          module: {
            BroadwaySQS.Producer,
            queue_name: "my_queue",
            config: [
              access_key_id: "key",
              secret_access_key: "secret",
              region: "ap-south-1"
            ]
          },
          stages: 60
        ]
      ],
      processors: [
        default: [
          stages: 100
        ]
      ],
      batchers: [
        default: [
          stages: 80,
          batch_size: 10,
          batch_timeout: 2000
        ]
      ]
    )
  end

# callbacks
  def handle_message(_, %Message{data: data} = message, _) do
    message
    |> Message.update_data(fn data -> data * data end)
  end

  def handle_message(_, message, _) do
    receipt = %{
      id: message.metadata.message_id,
      receipt_handle: message.metadata.receipt_handle
    }

    IO.inspect(receipt)
    # Do something with the receipt
  end

  def handle_batch(_, messages, _, _) do
    list = messages |> Enum.map(fn e -> e.data end)
    IO.inspect(list, label: "Got batch from SQS")
    messages
  end

我是长生不老药的新开发者。谁能帮助我有关如何从AWS SQS发送和接收消息的信息。 handle_batch和handle_message函数的目的是什么。如果这是幼稚的问题,请原谅我。

elixir amazon-sqs
1个回答
0
投票

[对于初学者,有一篇关于百老汇的精彩文章:https://akoutmos.com/post/broadway-rabbitmq-and-the-rise-of-elixir/。它有RabbitMQ示例,但您可以对SQS使用相同的想法]

如前所述,百老汇中没有“发送”部分,因为它更像是一个消费消息的框架

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