PubSub
From charlesreid1
Contents
Installing
Gcloud
PubSub Client Library
There is a long list of client libraries for Google Cloud provided here: https://cloud.google.com/apis/docs/cloud-client-libraries
The Python API bundles each component separately, and not everything comes with the client library by default. For example, if you want to use BigQuery, you have to install the BigQuery API components. If you want to use PubSub, you have to install the PubSub API components. Installing one does not necessarily install the other.
Python API
The standard Google Cloud SDK does not install any Python bindings. If you want Python bindings, you'll need to install those things using pip:
$ pip3 install --upgrade google-cloud $ pip3 install --upgrade google-cloud-pubsub
Link/reference: https://cloud.google.com/pubsub/docs/reference/libraries#client-libraries-install-python
Also see: https://github.com/GoogleCloudPlatform/google-cloud-python
Specifically: https://github.com/GoogleCloudPlatform/google-cloud-python/tree/master/pubsub
Using
Using from gcloud
The prefix beta is required to come before pubsub.
Here is how to create a topic:
$ gcloud beta pubsub topics create sandiego
Here is how to publish a message (a glob of bytes) to said topic:
$ gcloud beta pubsub topics publish sandiego "hello world"
Using from Python
Example of creating a topic and publishing a message from Python code:
from google.cloud import pubsub client = pubsub.Client() topic = client.topic("sandiego") topic.create() topic.publish(b'hello world')