omarthinks/flask_microservices_project

Building a Micro-services Application using Flask

Flask Microservices Project:

Building a Microserviecs using Flask

A) Credits:

• Udacity Course:
  • https://www.udacity.com/course/scalable-microservices-with-kubernetes--ud615
  • (This is a free course)

B) Technologies Used:

1. Python
2. Flask
3. Docker

C) Services:

This consists of 2 sevices:

1. hello_world_service
2. ping_service

C-1) Hello World Service:

Port:

3000

Endpoints:

1) (GET) /

Returns: Hello, World!
http://127.0.0.1:3000/

How to run:

python services/hello_world_service/app.py

C-2) Ping Service:

Port:

3001

Endpoints:

1) (GET) /ping

Returns: Pong

http://127.0.0.1:3001/ping

How to run:

python services/ping_service/app.py

D) Using Docker:

D-1) Generating the images:

Inside the folder of each service, there is a file called:
image_builder.sh
When you double click this file , the image will be generated.

D-2) Running the Containers:

Go to this directory:
Docker/containers
There you will find these files:

1. container_builder__all.sh
   • This builds the containers of the images ofthe services
2. container_builder_hello_world.sh
   • This builds the container of service of the hello_world image
3. container_builder_ping.sh
   • This builds the container of service of the ping image

D-3) Deleting The Containers:

In the same directory, as the previous article.
Docker/containers
There you will find these files:

1. container_deleter_all.sh
   • deletes all the containers related to the services
2. container_deleter_hello_world.sh
   • deletes the hello_world service container.
3. container_deleter_ping.sh
   • deletes the ping service container.

D-4) Docker Compose:

Inside the folder Docker, there are 3 files:

1. compose.sh
   • Double clicking this file will compose the services
2. docker-compose.yml
   • This file contains the compose specifications
3. container_deleter__all.sh
   • Double clicking this file will delete all the compose containers

Now using your browser, check these links:

1. http://127.0.0.1:3000/
   • The response will be : Hello, World!
2. http://127.0.0.1:3001/ping
   • The response will be : Pong