Effective in version 10.5, you can use Google PubSub as a source in streaming mappings.
Use a Google PubSub source to read messages from the configured Google Cloud PubSub subscription.
Google PubSub is an asynchronous messaging service that decouples services that produce events from services that process events. You can use Google PubSub as a messaging-oriented middleware or for event ingestion and delivery for streaming analytics pipelines. Google PubSub offers durable message storage and real-time message delivery with high availability and consistent performance at scale. You can run Google PubSub servers in all the available Google Cloud regions around the world.