https://github.com/queeniecplusplus/cloudpubsub

A cloud message subscriber for client
https://github.com/queeniecplusplus/cloudpubsub

pubsub pubsub-library pubsub-messages pubsub-subscriber pubsubclient subscriber-publisher

Last synced: 3 months ago
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A cloud message subscriber for client

• Host: GitHub
• URL: https://github.com/queeniecplusplus/cloudpubsub
• Owner: QueenieCplusplus
• Created: 2020-11-09T00:25:38.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2020-11-09T01:20:04.000Z (over 4 years ago)
• Last Synced: 2025-01-06T04:26:10.387Z (5 months ago)
• Topics: pubsub, pubsub-library, pubsub-messages, pubsub-subscriber, pubsubclient, subscriber-publisher
• Homepage: https://github.com/QueenieCplusplus/QuickGoThru/blob/master/README.md#gcp-cloud-tech-part-3-in-2020
• Size: 83 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# CloudPubSub

A cloud message subscriber for client

The Google Cloud Pub/Sub service allows applications to exchange messages reliably, quickly, and asynchronously. To accomplish this, a data producer publishes messages to a Cloud Pub/Sub topic. A subscriber client then creates a subscription to that topic and consumes messages from the subscription. Cloud Pub/Sub persists messages that could not be delivered reliably for up to 7 days.

# Core Steps:

(1) create a Virtual Evn.

(2) create Pub/Sub topic.

(3) create Pub/Sub subscriber for client.

(4) public message to topic.

(5) to delivery (indivisual) output topic meassage using a Pull Subsriber.

-----

from step 1:

> create a virtual env.

* 1.1, log in and activate the cloud shell, list the proj-id, then type the cmd line below.

      sudo apt-get update

      

      sudo apt-get install virtualenv

      // python virtual env is used to isolate the installation from sys.

      

      virtuallen -p python3 env

      

      source venv/bin/activate

      

 > from step 2:

 

 > create a pubsub client from cloud.

 

 * 2.1, install google-cloud-pubsub to python pkg.

 

       pip install --upgrade google-cloud-pubsub

       

 * 2.2, get pkg from github.

 

       git clone https://github.com/QueenieCplusplus/PubSub_Python_App.git

      

       cd PubSub_Python_App

       

  * 2.3, get Google Proj ID

  

        export GLOBAL_CLOUD_PROJECT=GCP Project ID

  * 2.4, edit/running code file

  

        cat publisher.py

        

        python publisher.py -h

        

        python publisher.py $GLOBAL_CLOUD_PROJECT create MyTopic

    

   * 2.5, in cloud console, navigate to Big Data > Pub/Sub > topics we made.

   

         [result in UI]

         

        ![topic](https://raw.githubusercontent.com/QueenieCplusplus/CloudPubSub/main/pubsub%20topics%200.png)

        

to be continued...