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Development Environment Prerequisites

• Create your AWS account to access AWS Console
• Install AWS SAM: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/install-sam-cli.html#install-sam-cli-instructions
• Install AWS CLI: https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html
• Install Docker: https://docs.docker.com/get-docker/

Setup

1. Clone this repo.

2. Create Docker network (do it once in your first setup): docker network create sam-demo-net

3. Start DynamoDB Local by executing the following at the command prompt:
   docker run -p 8000:8000 --network sam-demo-net --name ddblocal amazon/dynamodb-local
   This will run the DynamoDB local in a docker container at port 8000.

4. At the command prompt, list the tables on DynamoDB Local by executing:
   aws dynamodb list-tables --endpoint-url http://localhost:8000

5. An output such as the one shown below confirms that the DynamoDB local instance has been installed and running:
   {
   "TableNames": []
   }

6. At the command prompt, create the ToDosTable by executing:
   aws dynamodb create-table --cli-input-json file://json/create-todos-table.json --endpoint-url http://localhost:8000

   Note: If you misconfigured your table and need to delete it, you may do so by executing the following command:
   aws dynamodb delete-table --table-name ToDosTable --endpoint-url http://localhost:8000

7. At the command prompt, start the local API Gateway instance by executing:
   sam local start-api --env-vars json/env.json --docker-network sam-demo-net

Testing the application

1. Insert a ToDo item in the table by executing the following CURL command at the prompt:
   curl -X POST -d '{"title": "test ToDo"}' http://127.0.0.1:3000/todos

2. Let's retrieve ToDo items from the local DynamoDB instance by executing the following CURL command at the prompt:
   curl http://127.0.0.1:3000/todos

3. To update ToDo item, run this command:

curl -X PUT -d '{"title": "test ToDo (completed)", "isCompleted": true}' http://127.0.0.1:3000/todos/UUID

Note: replace UUID with real item id.