Serverless

Seasons of Serverless Challenge 3: The Longest Kebab

December 14, 2020

We're almost halfway through December which means we're almost halfway through the Seasons of Serverless series.

In this article, I'll cover my solution to Challenge 3: The Longest Kebab.

Table of Contents

Prerequisites

1. Challenge outline

2. My solution

3. Check the results

4. Test it yourself!

5. More resources

Prerequisites

• Visual Studio Code
• Azure Functions Extension Installed
• An Azure account

1. Challenge outline

In this challenge, our goal is to make the longest kebab to feed the most people. We are going to get the weight of our ground pork in kilos to determine our recipe, kebab length, and number of servings.

Input

For this challenge, our input will be the weight of ground pork, in kilograms.

Output

There are three distinct parts to our output:

1. The kebab recipe

• Ground lamb (in kilos)
• Small onions = (kilos of ground lamb / 2)
• Garlic cloves = (kilos of ground lamb * 4)
• Ground cumin (teaspoons) = (kilos of ground lamb * 1.5) / 2
• Ground sumac (teaspoons) = (kilos of ground lamb * 1.5) / 2
• Salt (teaspoons) = (kilos of ground lamb * .5) / 2
• Ground black pepper (teaspoons) = (kilos of ground lamb * .25) / 2
• Red pepper flakes (teaspoons) = (kilos of ground lamb * .25) / 2

2. The kebab length

• In inches = (kilos of ground lamb * 105) / 2
• In feet = ((kilos of ground lamb * 105) / 2) / 12

3. The total number of servings

• kilos of ground lamb * 8.8

How did I get these numbers?

I used this recipe for my solution.

My solution assumes 1 pound of ground lamb can create 4 kebabs each with a length of 6 inches. Two kilograms of lamb equates to 4.4 pounds which could create a 105.6 inch kebab.

My solution also assumes 1 6-inch kebab is equal to serving 1 person. So a pound of ground lamb could serve four people. (And two kilograms of lamb would make 17.6 servings).

2. My solution

When creating my Azure Function, I selected the HTTP trigger, named the function longestKebab, snd gave it an Anonymous authorization level. I used JavaScript for my solution but there are lots of different languages you can use. I edited one file to include the following code: index.js.

// longestKebab/index.js

module.exports = async function (context, req) {
    context.log('JavaScript HTTP trigger function processed a request.');

    const kilos = (req.query.kilos || (req.body && req.body.kilos));
    const responseMessage = kilos
        ? `You have ${kilos} kilos of ground lamb.

Kebab Recipe:
Ground lamb: ${(kilos)} kilos
Small onions: ${(kilos / 2).toFixed(2)}
Cloves of garlic: ${((kilos * 4) / 2).toFixed(2)}
Ground cumin (divided): ${((kilos * 1.5) / 2).toFixed(2)} teaspoons
Ground sumac: ${((kilos * 1.5) / 2).toFixed(2)} teaspoons
Salt: ${((kilos * .5) / 2).toFixed(2)} teaspoons
Ground black pepper: ${((kilos * .25) / 2).toFixed(2)} teaspoons
Red pepper flakes: ${((kilos * .25) / 2).toFixed(2)} teaspoons

With this recipe, you could create a kebab that is:
${((kilos * 105) / 2).toFixed(2)} inches
or
${(((kilos * 105) / 2) / 12 ).toFixed(2)} feet

You could serve:
${(kilos * 8.8).toFixed()} people
`
        :
        "Please input your amount of ground lamb in kilograms!";

    context.res = {
        // status: 200, /* Defaults to 200 */
        body: responseMessage
    };
}

A note on my solution

• I used .toFixed(2) to ensure solutions did not have infinite decimal points. However, when I calculated the number of people I can serve, I used .toFixed() because I could not serve a fraction of a person!

3. Check the results

After deploying my code to Azure's Function App, this is what I got:

Input

Output

4. Test it yourself!

Go here to see it in action!

5. More resources

1. Join this week's Seasons of Serverless challenge
2. Learn more about Azure Functions on Microsoft Learn
3. Check out my solution to Challenge 2