To build a chat bot using AWS Lambda and Websocket API in AWS API Gateway, you will need to create the following:
- An AWS Lambda function that will handle the chat bot logic.
- A WebSocket API in AWS API Gateway that will trigger the Lambda function when a new message is received.
- A client application that will connect to the WebSocket API and send and receive messages.
Here is a simple example of a Python Lambda function that can be used to implement a chat bot:
Once you have created the Lambda function, you need to create a WebSocket API in AWS API Gateway. To do this, follow these steps:
- Open the AWS API Gateway console.
- Click Create API.
- Select WebSocket APIs and click Next.
- Enter a name for your API and click Next.
- Select Create to create your API.
Once your API is created, you need to create a new resource and method. To do this, follow these steps:
- Click Resources and then click Create Resource.
- Enter a name for your resource and click Create.
- Click the GET method and then click Integration.
- Select Lambda Function and then select the Lambda function that you created earlier.
- Click Save.
Now that you have created the WebSocket API and resource, you can deploy your API. To do this, follow these steps:
- Click Deploy and then click New deployment.
- Enter a name for your deployment and click Deploy.
To implement above configuration using boto3 .
Once your deployment is complete, you can connect to the WebSocket API using a client application. For example, you could use a JavaScript library such as Socket.IO to connect to the API.
Here is an example of a simple chat client application that uses Socket.IO to connect to the WebSocket API:
To start the chat client, simply run the following command:
” node chat-client.js “
You should then see the following output:
” Connected to chat bot Received message from chat bot: Hello, world! “
You can now start sending and receiving messages with the chat bot.