Message output formats
Messages in the Cloud Pub/Sub format need to be exported to various formats for applications to consume them or import them into another data source. The following section explains the various options available for exporting a message in various formats. Create a new Pub/Sub topic in your project for this demo and add a subscriber to that topic. Note down the topic name and subscriber name for use in the following command. This demo uses pubsubTopic as its topic name and pubSubTopicSubscriber as its topic subscriber name.
Run the following command to publish a message to the intended topic in Google Cloud Pub/Sub. Replace Message Text and attribute in the message as per your project:
gcloud beta pubsub topics publish pubsubTopic --message "Message Text" --attribute="EmployeeID=20,FirstName=Vinod,LastName=Kumar,DateOfJoining=2016-02-16,Country=Norway"The preceding command generates a message ID and displays it as shown here:
Use the following command to pull the message...
