将消息发布到数据流中的Pubsub主题 [英] Publish messages to Pubsub topic in Dataflow

问题描述

在Dataflow中将消息发布到发布/订阅主题的推荐方法是什么.我曾经使用过客户端API，但认为这不是在Dataflow中处理此问题的最佳方法.

What is the recommended way to publish messages to a Pub/Sub topic in Dataflow. I have worked with client APIs but do not think it is the best way to handle this in Dataflow.

PublishResponse response = client.projects().topics()
                        .publish(fullTopicName, publishRequest)
                        .execute();

推荐答案

将消息从Dataflow作业发布到PubSub主题的最佳方法是使用 PubsubIO 类.示例:

The best way to publish messages to a PubSub topic from a Dataflow job is to use the PubsubIO class. Example:

Pipeline p = Pipeline.create();

// do some transforms

p.apply("publish message", PubsubIO.write().to("pubsub/topic"));

参考: PubsubIO

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