NYU DevOps Project - Product Service

Products Service - Representation of the products for a catalog where merchants can add updates and display products.

Overview

This project the code for Product service. The /service folder contains the models.py file for Product model and a routes.py file for Product service. The /tests folder has test case for testing the model and the service separately.

Our Service End Point

The service is currently hosted on a Kubernetes Cluster on IBM Cloud.

• Dev End Point: http://169.51.207.249:31001/
• Prod End Point: http://169.51.207.249:31006/
• Our Pipeline: https://cloud.ibm.com/devops/pipelines/562cb654-4cd4-43ba-9a03-ab1c4351c784?env_id=ibm:yp:us-south

Running the service locally

Before Run, make sure you have install Docker Desktop, Visual Studio Code, Remote Containers extension first. Then you could clone the repository and then run the following commands:

• cd products
• code .
• Reopen the folder in Dev Container
• Run flask run command on the terminal
• The service is available at localhost: http://localhost:8000

To run the all the test cases locally, please run the command nosetests. The test cases have 99% code coverage currently.

To run the BDD tests, first start the service in a terminal by running honcho start and then run behave in another terminal.

Products Service APIs

Index

GET /

Products Operations

Endpoint	Methods	Rule
create_products	POST	/products
delete_products	DELETE	/products/{int:product_id}
get_products	GET	/products/{int:product_id}
list_products	GET	/products
search_products	GET	/products?<query_field>=<query_value>
update_products	PUT	/products/{int:product_id}
like_products	PUT	/prouducts/{int:product_id}/like

Product Service APIs - Usage

Create a Product

URL : http://127.0.0.1:8000/products

Method : POST

Auth required : No

Permissions required : None

Create a product with json file which included product name, description, price, category, inventory, discount and created date.

Example:

Request Body (JSON)

{
  "price": 0.5,
  "name": "Cheese",
  "category": "dairy",
  "created_date": "2023-03-07",
  "inventory": 5,
  "desc": "This is more popular",
  "discount": 1,
  "like": 0
}

Success Response : HTTP_201_CREATED

{
  "category": "dairy",
  "created_date": "2023-03-07",
  "deleted_date": null,
  "desc": "This is more popular",
  "discount": 1.0,
  "id": 956,
  "inventory": 5,
  "modified_date": null,
  "name": "Cheese",
  "price": 0.5,
  "like": 0
}

Read/Get a Product

URL : http://127.0.0.1:8000/products/{int:product_id}

Method : GET

Auth required : No

Permissions required : None

Gets/Reads a product with id provided in the URL

Example:

Success Response : HTTP_200_OK

{
  "category": "dairy",
  "created_date": "2023-03-07",
  "deleted_date": null,
  "desc": "This is more popular",
  "discount": 1.0,
  "id": 956,
  "inventory": 5,
  "modified_date": null,
  "name": "Cheese",
  "price": 0.5,
  "like": 0
}

Failure Response : HTTP_404_NOT_FOUND

{
  "error": "Not Found",
  "message": "404 Not Found: Product with id '1' could not be found.",
  "status": 404
}

Update a Product

URL : http://127.0.0.1:8000/products/{int:product_id}

Method : PUT

Auth required : No

Permissions required : None

Updates a product with id provided in the URL according to the updated fields provided in the body

Example:

Request Body (JSON)

{
  "price": 0.5,
  "name": "Cheese",
  "category": "dairy",
  "created_date": "2023-03-07",
  "inventory": 50,
  "desc": "This is more popular",
  "discount": 1,
  "like": 0
}

Success Response : HTTP_200_OK

{
  "category": "dairy",
  "created_date": "2023-03-07",
  "deleted_date": null,
  "desc": "This is more popular",
  "discount": 1.0,
  "id": 955,
  "inventory": 50,
  "modified_date": null,
  "name": "Cheese",
  "price": 0.5,
  "like": 0
}

Failure Response : HTTP_404_NOT_FOUND

{
  "error": "Not Found",
  "message": "404 Not Found: Product with id '1' could not be found.",
  "status": 404
}

Delete a Product

URL : http://127.0.0.1:8000/products/{int:product_id}

Method : DELETE

Auth required : No

Permissions required : None

Deletes a Product with id

Example:

Success Response : 204 NO CONTENT

List Products

URL : http://127.0.0.1:8000/products

Method : GET

Auth required : No

Permissions required : None

Lists all the Products

Example:

Success Response : HTTP_200_OK

[
  {
    "category": "dairy",
    "created_date": "2023-03-07",
    "deleted_date": null,
    "desc": "This is more popular",
    "discount": 1.0,
    "id": 954,
    "inventory": 5,
    "modified_date": null,
    "name": "Cheese",
    "price": 0.5,
    "like": 0
  }
]

Like a Products

URL : http://127.0.0.1:8000/products/{int:product_id}/like

Method : PUT

Auth required : No

Permissions required : None

Like a Product with given id

Example:

Success Response : HTTP_200_OK

[
  {
    "category": "dairy",
    "created_date": "2023-03-07",
    "deleted_date": null,
    "desc": "This is more popular",
    "discount": 1.0,
    "id": 954,
    "inventory": 5,
    "modified_date": null,
    "name": "Cheese",
    "price": 0.5,
    "like": 1
  }
]

Contents

The project contains the following:

.gitignore          - this will ignore vagrant and other metadata files
.flaskenv           - Environment variables to configure Flask
.gitattributes      - File to gix Windows CRLF issues
.devcontainers/     - Folder with support for VSCode Remote Containers
dot-env-example     - copy to .env to use environment variables
requirements.txt    - list if Python libraries required by your code
config.py           - configuration parameters

service/                   - service python package
├── __init__.py            - package initializer
├── models.py              - module with business models
├── routes.py              - module with service routes
└── common                 - common code package
    ├── error_handlers.py  - HTTP error handling code
    ├── log_handlers.py    - logging setup code
    └── status.py          - HTTP status constants
└── static                 - code for UI of the homepage

tests/                - test cases package
├── __init__.py       - package initializer
├── factories.py      - factory to generate instances of model
├── test_cli_commands - tests custom flask cli commands
├── test_models.py    - test suite for business models
└── test_routes.py    - test suite for service routes

features/             - bdd test cases package
├── products.feature  - products test scenarios
├── environment.py    - environment for bdd tests
└── steps             - code for describing bdd steps
    ├── steps.py      - steps for products.feature
    ├── web_steps.py  - steps for web interaction with selenium

deploy/               - yaml files for kubernetes deployment
├── deployment.yaml   - Deployment for products api
├── postgresql.yaml   - StatefulSet, Service, Secret for postgres db 
├── service.yaml      - Service for products api

License

Copyright (c) John Rofrano. All rights reserved.

Licensed under the Apache License. See LICENSE

This repository is part of the NYU masters class: CSCI-GA.2820-001 DevOps and Agile Methodologies created and taught by John Rofrano, Adjunct Instructor, NYU Courant Institute, Graduate Division, Computer Science, and NYU Stern School of Business.