1. Follow Part 1: Cluster Creation of this artice to create a cluster on Mongo Atlas' Free Tier.

1. Install Serverless

   npm install -g serverless
   

2. Install serverless-python-requirements

   npm i --save serverless-python-requirements
   

3. Define necessary environment variables

   Append this to your ~/.bash_profile

   export MONGO_DB_USER=
   export MONGO_DB_PASS=
   export MONGO_DB_NAME=SampleDatabase
   export MONGO_COLLECTION_NAME=SampleCollection
   export MONGO_DB_URL=
   

4. Deploy the API

   sls deploy
   

   Your results should look something like this:

   Serverless: Stack update finished...
   Service Information
   service: serverless-pymongo-item-api
   stage: dev
   region: us-east-1
   stack: serverless-pymongo-item-api-dev
   resources: 28
   api keys:
     None
   endpoints:
     POST - https://0xfyi15qci.execute-api.us-east-1.amazonaws.com/dev/item
     GET - https://0xfyi15qci.execute-api.us-east-1.amazonaws.com/dev/item
     GET - https://0xfyi15qci.execute-api.us-east-1.amazonaws.com/dev/item/{id}
     DELETE - https://0xfyi15qci.execute-api.us-east-1.amazonaws.com/dev/item/{id}
   functions:
     create: serverless-pymongo-item-api-dev-create
     list: serverless-pymongo-item-api-dev-list
     get: serverless-pymongo-item-api-dev-get
     delete: serverless-pymongo-item-api-dev-delete
   layers:
     None
   Serverless: Removing old service artifacts from S3...
   Serverless: Run the "serverless" command to setup monitoring, troubleshooting and testing.
   

Substitute your endpoints into these curl commands to test the Create, Read, and Delete operations

curl --request POST \
  --url https://0xfyi15qci.execute-api.us-east-1.amazonaws.com/dev/item \
  --header 'content-type: application/json' \
  --data '{
	"attribute_1": "Pet",
	"attribute_2": "Rock"
}'

204 status

{
  "_id": "c6f03ca0-f792-11e9-9534-260a4b91bfe9",
  "data": {
    "attribute_1": "Pet",
    "attribute_2": "Rock"
  }
}

curl --request GET \
  --url https://0xfyi15qci.execute-api.us-east-1.amazonaws.com/dev/item/c6f03ca0-f792-11e9-9534-260a4b91bfe9 \
  --header 'content-type: application/json'

200 status

{
  "_id": "c6f03ca0-f792-11e9-9534-260a4b91bfe9",
  "data": {
    "attribute_1": "Pet",
    "attribute_2": "Rock"
  }
}

curl --request GET \
  --url https://0xfyi15qci.execute-api.us-east-1.amazonaws.com/dev/item \
  --header 'content-type: application/json'

200 status

{
  "response_items": [
    {
      "_id": "c6f03ca0-f792-11e9-9534-260a4b91bfe9",
      "data": {
        "attribute_1": "Pet",
        "attribute_2": "Rock"
      }
    },
    {
      "_id": "717c5f36-f799-11e9-a921-1e0e685be73c",
      "data": {
        "attribute_1": "Pete",
        "attribute_2": "Rock"
      }
    }
  ],
  "filter": null
}

curl --request DELETE \
  --url https://0xfyi15qci.execute-api.us-east-1.amazonaws.com/dev/item/c6f03ca0-f792-11e9-9534-260a4b91bfe9 \
  --header 'content-type: application/json'

204 status