Helloapppython

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Introduction

This is a test api and webapp with some common functionalities to test various needs for development, environment setup and devops tools connectivity and workflows.

Api's for the app

• Api to update the app version

  http://localhost:5000/appver?val=<New-version>

• Api to greet a user for the webapp

  http://localhost:5000/greet/<name>

  http://localhost:5000/api/greet/<name>

• Api for server info

  http://localhost:5000/api/info

Functionalities

1. Update app version for the webapp ( by api)

2. Greet user with POST method ( via api and web)

3. Get server info, once deployed on Kubernetes (on homepage and via api in json format)

4. For running on Kubernetes, by using kubectl kustomise we can modify image (name & tag) and other configurable parans via updating kustomization.yaml in kubernetes folder.

5. This app can be built in 3 ways

   5.1 With gunicorn WSGI server - Dockerfile added.

   5.2 With python and Flask module only - Dockerfile added.

   5.3 With buildpack,

   • The build command can be overriden by Procfile in root folder.
   • Other params can be passed as command line options in build command.
   • The buildpack command to build OCI image for app using pack CLI locally using container runtime.

    $ pack build helloapp-img \
       --path ~/files/helloapppython \
       --env BP_CPYTHON_VERSION=3.9.13  \
       --buildpack paketo-buildpacks/python  \
       --builder paketobuildpacks/builder:full
   

   • The buildpack command to build OCI image for app using kpack [kp] CLI in kubernetes cluster configured with remote image registry.

     $ kp image create helloapppython \
        --tag registry.mylab.com/rsingh-lib/helloapppython \
        --cluster-builder default \
        --namespace helloapppython \
        --wait \
        --git https://github.com/rajks24/helloapppython.git \
        --git-revision main \
        --env BP_CPYTHON_VERSION=3.9.13
     

TODOS

1. Add open api swagger

Contact

You can reach me on Twitter @rajinh24

License

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