Invoke Lambda

Invoke Lambda is a simple web application designed to remotely trigger AWS Lambda functions. It provides a user-friendly interface for selecting and invoking Lambda functions stored in your AWS account. This README provides an overview of the application's structure, its requirements, and how to set it up.

Table of Contents

• Purpose
• Prerequisites
• Application Structure
• Configuration
• Logging
• Spam Prevention
• Usage
• Contributing
• License

Purpose

The primary purpose of Invoke Lambda is to allow users to remotely invoke AWS Lambda functions without needing to access the AWS Management Console directly. It simplifies the process by providing a user-friendly interface with a dropdown menu to select and trigger Lambda functions.

Prerequisites

Before using Invoke Lambda, ensure you have the following prerequisites in place:

• AWS credentials with the following:
  • AWSAccessKeyId: Your AWS Access Key ID.
  • AWSSecretAccessKey: Your AWS Secret Access Key.
  • LambdaRegion: The AWS region where your Lambda functions are hosted.
• AWS Lambda functions that you want to trigger.

Application Structure

Invoke Lambda is divided into two main components:

Frontend

• The user interface presents a dropdown selection where you can choose the Lambda function to invoke.
• It includes JavaScript functionality to disable the button during a cooldown period to prevent spam.

Backend

• web.config: This configuration file contains AWS credentials required to access AWS resources.
• lambdafunctions.xml: This XML file contains function names and their corresponding alias names, which are visible in the dropdown menu.
• Logging functionality is implemented:
  • Errors are written to a log file.
  • User IP addresses and timestamps are logged whenever a function is invoked.

Configuration

Before using the application, configure the following settings:

1. web.config:

   • AWSAccessKeyId: Your AWS Access Key ID.
   • AWSSecretAccessKey: Your AWS Secret Access Key.
   • LambdaRegion: The AWS region where your Lambda functions are hosted.

2. lambdafunctions.xml:

   • Populate this XML file with the Lambda function names and their alias names for the dropdown menu.

Logging

Invoke Lambda provides a basic logging system:

• Error logging: Any errors that occur are logged in a separate file.
• Invocation logging: Whenever a user invokes a function, their IP address and a timestamp are logged.

Spam Prevention

To prevent spamming of the "Invoke" button, a JavaScript timer is implemented. It disables the button after each invocation and displays a countdown until the button becomes clickable again.

Usage

1. Configure web.config and lambdafunctions.xml as described above.
2. Deploy the application to your web server.
3. Access the application through a web browser.
4. Select a Lambda function from the dropdown menu.
5. Click the "Invoke" button to trigger the selected Lambda function.
6. NOTE: It is a good idea, to password protect this application to avoid security issues.