news aggregator api

news aggregator rust api using lambda and news api

Usage

Query:

https://your-lambda-function-url.amazonaws.com/
{
  "query": "string",
  "news_api_key": "string"
}

Output:

{
    "req_id": "3389cab0-c041-4c0c-99bc-1981a2288b4c",
    "response": {
        "articles": [
            {
                "headline": "I Own a Chevy Bolt, and Superchargers Are a Total Game Changer",
                "publishedAt": "2024-10-04T22:04:17Z",
                "publisher": "Wired"
            },
            {
                "headline": "Tesla Semi fire required 50,000 gallons of water to extinguish",
                "publishedAt": "2024-09-13T12:00:06Z",
                "publisher": "Yahoo Entertainment"
            },
            {
                "headline": "Tesla Is Ready to Roll Out the Cybercab, Its Answer to Robotaxis",
                "publishedAt": "2024-10-09T12:30:00Z",
                "publisher": "Wired"
            },
        ]
    }
}

Setup

1. AWS Account: Ensure you have an AWS account and the AWS CLI configured. If not use aws configure and provide an IAM user's AWS access key ids.

2. News API Key:

   • Sign up at newsapi.org to get an API key.

3. Lambda Function:

   • Use this tutorial to set up your lambda function that uses Rust: Deploy Rust Lambda functions with .zip file archives

4. IAM Permissions: Add SSM read permissions to your Lambda function's role.

5. Build and Deploy:

   • Build the project: cargo lambda build --release --target x86_64-unknown-linux-gnu
   • Deploy: cargo lambda deploy news-aggregator

6. Enable Function URL:

   • In the AWS Lambda console, go to your function and select the "Configuration" tab.
   • In the left sidebar, click on "Function URL".
   • Click "Create function URL" and configure it as follows:
     • Auth type: NONE
     • Configure cross-origin resource sharing (CORS): Enabled
     • Allow origin: * (or specify your allowed origins)
     • Allow headers: *
     • Allow methods: GET, POST
     • Allow credentials: Yes
   • Click "Save" to create the function URL.

   This configuration allows public access to your function URL without IAM authentication and enables full CORS access.

Usage

To use the Lambda function, you can invoke it using a curl command with query parameters:

curl "https://your-lambda-function-url.amazonaws.com/?query=technology&news_api_key=your_news_api_key_here"

Replace your-lambda-function-url with your actual Lambda function URL, and your_news_api_key_here with your News API key.

This will return news articles related to the query "technology" from the News API.

Development

• Main logic is in src/main.rs.
• Use cargo lambda watch for local development.
• Run cargo test for unit tests.