Function deployment and testing in GCP - Mini Project: Build & Apply

Function deployment and testing

📖 Scenario: You are working on a cloud project where you need to deploy a simple Google Cloud Function that responds with a greeting message. You will create the function code, configure deployment settings, deploy the function, and then test it to ensure it works correctly.

🎯 Goal: Build and deploy a Google Cloud Function named helloWorld that returns a greeting message. Then configure the function to allow unauthenticated access and test it by invoking it using the Google Cloud CLI.

📋 What You'll Learn

Create a Python function named helloWorld that returns the string 'Hello, Cloud!'

Create a deployment configuration specifying the runtime as Python 3.9 and the entry point as helloWorld

Deploy the function to Google Cloud with the name helloWorld in the us-central1 region

Allow unauthenticated invocations of the deployed function

Test the deployed function by invoking it using the gcloud CLI command

💡 Why This Matters

🌍 Real World

Cloud Functions let developers run code in response to events without managing servers. Deploying and testing functions is a common task in cloud projects.

💼 Career

Knowing how to deploy and test cloud functions is essential for cloud engineers, developers, and DevOps professionals working with serverless architectures.

1

Create the Cloud Function code

Create a Python function named helloWorld that takes request as a parameter and returns the string 'Hello, Cloud!'.

GCP

# Your code here

Need a hint?

Define a function named helloWorld with one parameter request. Return the greeting string.

2

Create deployment configuration

Create a variable named deployment_config as a dictionary with keys runtime set to 'python39' and entry_point set to 'helloWorld'.

GCP

def helloWorld(request):
    return 'Hello, Cloud!'

# Your code here

Need a hint?

Create a dictionary named deployment_config with the specified keys and values.

3

Deploy the Cloud Function

Write a shell command string named deploy_command that deploys the function helloWorld to the us-central1 region using the runtime and entry point from deployment_config. The command should use gcloud functions deploy with flags --runtime, --entry-point, and --region.

GCP

def helloWorld(request):
    return 'Hello, Cloud!'

deployment_config = {
    'runtime': 'python39',
    'entry_point': 'helloWorld'
}

# Your code here

Need a hint?

Use an f-string to build the deploy command using values from deployment_config. Include --trigger-http and --allow-unauthenticated flags.

4

Test the deployed function

Write a shell command string named test_command that invokes the deployed function helloWorld in the us-central1 region using gcloud functions call.

GCP

def helloWorld(request):
    return 'Hello, Cloud!'

deployment_config = {
    'runtime': 'python39',
    'entry_point': 'helloWorld'
}

deploy_command = f"gcloud functions deploy helloWorld --runtime {deployment_config['runtime']} --entry-point {deployment_config['entry_point']} --region us-central1 --trigger-http --allow-unauthenticated"

# Your code here

Need a hint?

Create a string named test_command with the exact gcloud CLI call command to invoke the function.