Projected Savings Microservice

Introduction

This microservice calculates the projected savings based on total savings, average monthly savings, and a specified number of months. It is designed to be called programmatically from a main application using Python's subprocess module.

Requesting Data from the Microservice

To request data from this microservice, use the subprocess module in Python. The subprocess function is required to establish the appropriate API to the microservice and format and interpret the input/output. The microservice requires three arguments: total savings, average savings, and months in integer/float syntax. An example call below will show how to correctly use the microservice and example valid inputs.

Receiving Data from the Microservice

The microservice outputs the result as a string. The calling program should capture this output using subprocess.run and then process it as needed, typically by converting it to the appropriate data type (e.g., float).

Sequence Diagram

Please refer to the attached UML sequence diagram for a detailed understanding of how the main application requests and receives data from the microservice.

Example Call (in Python):

import subprocess

def call_projected_savings_service(total_savings, average_savings, months):
    process = subprocess.run(
        ["python", "projected_savings_service.py", str(total_savings), str(average_savings), str(months)],
        capture_output=True, 
        text=True
    )
    return process.stdout.strip()

# Example usage
projected_savings = call_projected_savings_service(1000, 200, 6)
print(f"Projected Savings: {projected_savings}")