tarunsaxenattn/sample-python-monolith-app

Sample python monolith application

Tech Stack

• Flask
• Python 3.7.16

Build Instructions

git clone [email protected]:tarunsaxenattn/sample-python-monolith-app.git
cd sample-python-monolith-app
docker build . -t sample-python-monolith-app -f docker/Dockerfile

Run App locally for monolith app for internal healthcheck

docker run -itd -e healthcheckhost=127.0.0.1 --name sample-python-monolith-app -p 80:80 sample-python-monolith-app

Run App in microservices mode for external healthcheck

docker run -itd -e healthcheckhost=<APIHOST> --name sample-python-monolith-app -p 80:80 sample-python-monolith-app

The environment variable is mandatory to pass for healthcheck to work. Intentionally this is not made default variable

APIs

GET / => UI service

curl localhost/ui
UI

GET /payment => Payment service

curl localhost/payment
Payment page

GET /login => Login service

curl localhost/login
Login page

GET /healthcheck => healthcheck service

curl localhost/healthcheck   (For 127.0.0.1)

{"hostname": "66bac320fd75", "status": "success", "timestamp": 1678819024.6349406, "results": [{"checker": "login_available", "output": "Login up @@ ", "passed": true, "timestamp": 1678819024.631133, "expires": 1678819051.631133}, {"checker": "payment_available", "output": "Payment up @@ ", "passed": true, "timestamp": 1678819024.6346788, "expires": 1678819051.6346788}]}

Run with Publically available image

Full monolith app

docker run -itd -e healthcheckhost=127.0.0.1 --name sample-python-monolith-app -p 80:80 tarunttnd/sample-python-monolith-app

Only UI app (to simulate failure and let UI healthcheck hit APIHOST URL running on different host)

docker run -itd -e healthcheckhost=<APIHOST> --name sample-python-monolith-app -p 80:80 tarunttnd/sample-python-monolith-app:ui

Destroy

docker rm -f sample-python-monolith-app