aws sam deploy swagger api tutorial

sure! in this tutorial, we'll walk through the process of deploying a swagger api using aws serverless application model (sam). this guide will cover the necessary steps to create a simple api, define it with swagger, and deploy it to aws lambda using sam.

prerequisites

before we start, ensure you have the following installed:

- **docker**: required for building the lambda function (optional for local testing)
- **an aws account**: you need an aws account to deploy your application.

step 1: create a new sam application

1. open your terminal/command prompt.
2. run the following command to create a new sam application:

```bash
sam init
```

3. choose the following options:
- **1** for "aws quick start templates"
- choose a runtime (for example, `nodejs14.x`)
- provide a name for your application.

step 2: define your api with swagger

1. navigate to the newly created project directory.

```bash
cd your-sam-app-name
```

2. create a new folder named `swagger`:

```bash
mkdir swagger
```

```yaml
openapi: 3.0.1
info:
title: my api
description: this is a sample api using aws sam
version: '1.0'
paths:
/hello:
get:
summary: returns a greeting
operationid: getgreeting
responses:
'200':
description: a greeting message
content:
application/json:
schema:
type: object
properties:
message:
type: string
example: "hello, world!"
```

step 3: create your lambda function

1. navigate to the `hell ...

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