Question

我创建了一个应用程序，用于在GOOGLE中发布关于某个主题的特定数据云用于发布数据的Google文档中提供的代码（https://cloud.google.com/appengine/docs/standard/python/googlecloudstorageclient/read-write-to-cloud-storage）。

它工作正常。现在我想订阅这个TOPIC。我做的是

打开一个新终端（Linux mint）

然后我按照以下步骤进行操作

$ virtualenv env
$ source env / bin / activate
$ pip install -r requirements.txt（安装Appopriate Libraries）

4.然后我运行我的Subscriber.py文件

        def create_subscription(project,topic_name,subscription_name): 
           subscriber = pubsub_v1.SubscriberClient()
           topic_path = subscriber.topic_path(project, topic_name)
           subscription_path = subscriber.subscription_path(project, 
           subscription_name)
           subscription = subscriber.create_subscription(
           subscription_path, topic_path)
           print('Subscription created: {}'.format(subscription))

     def receive_messages(project, subscription_name):

        subscriber = pubsub_v1.SubscriberClient()
        subscription_path = subscriber.subscription_path(
        project, subscription_name)

        def callback(message):
        print('Received message: {}'.format(message))
        message.ack()

        subscriber.subscribe(subscription_path, callback=callback)
        print('Listening for messages on 
        {}'.format(subscription_path))
        while True:
        time.sleep(60)
  //calling above methods using appropriate parameters
    create_subscription("test-1-180006","TOPIC","SUB1")
    receive_messages("test-1-180006","SUB1")

但是当我运行上面的代码时它工作正常但没有显示任何内容。只显示以下消息

   Listening for messages on projects/test-1-180006/subscriptions/SUB1

无法订阅主题在Google Cloud Python上发布

0 个答案: