Blog Generator with Amazon Bedrock

This repository contains an end-to-end project that generates a blog post on a given topic using Amazon Bedrock.

Contents

• Architecture
• Requirements
  • Lambda
  • API Gateway
  • S3
• Usage

Architecture

How it works:

• A POST request is made to the lambda function with the blog topic in the request body.
• The lambda function takes the argument and creates a prompt for the model in bedrock to generate a blog post.
• If successful, the blog is generated and saved in a S3 bucket, else an error message is returned.

The model used in this project is Meta's Llama 2 Chat 13B(bedrock modelId: "meta.llama2-13b-chat-v1")

Requirements

• boto3
• json
• datetime

pip install boto3

Lambda

Create a Lambda function with Python 3.12 runtime, set timeout to 10 seconds, attach required policies to the execution role.

for the lambda function to have the latest boto3 library version do the following:

• install boto3 to a folder and compress that folder to a zip file.

pip install boto3 -t boto3-layer/ 

• publish the layer either manually (at console) or through AWS CLI

aws lambda publish-layer-version --layer-name boto3-layer --zip-file fileb:///path/to/zip/file.zip

API Gateway

Create a HTTP API and a POST route, integrate it with the Lambda function created. Head over to stages and get the Invoke URL. This is the URL to which you will send POST requests to.

S3 Bucket

Create an S3 bucket.

aws s3api create-bucket --bucket bucket-name -- region us-east-1

Usage

send the topic through a POST request to the invoke URL.

Here's a POST request and the response:

POST /dev/blog_generator HTTP/1.1
Host: ----------.execute-api.us-east-1.amazonaws.com
Content-Type: application/json
Content-Length: 28

{
  "blog_topic":"Bitcoin"
}

HTTP/1.1 200 OK
Date: Wed, 22 May 2024 03:57:30 GMT
Content-Type: text/plain; charset=utf-8
Content-Length: 29
Connection: keep-alive
Apigw-Requestid: YJ39QgSNoAMEYDA=

"Blog generated successfully"

access your s3 bucket to view the objects.

aws s3 ls s3://your-bucket-name/blog-output/

aws s3 cp s3://your-bucket-name/blog-output/035730.txt 035730.txt

cat 035730.txt