AWS Lambda Logs Viewer

A terminal-based user interface (TUI) application for viewing AWS Lambda function logs across multiple profiles and regions.

Features

• 🔍 Browse and filter Lambda functions across AWS profiles
• ⚡ Quick access to recent logs with predefined time ranges
• 📅 Custom date range selection for detailed log analysis
• 🔎 Real-time log filtering and search
• 💨 Fast navigation with keyboard shortcuts
• 📦 Function list caching for improved performance

Prerequisites

• Rust (latest stable version)
• AWS credentials configured in ~/.aws/credentials
• AWS config with profiles in ~/.aws/config

Installation

1. Clone the repository:

git clone https://github.com/resola-ai/rust-aws-tui
cd rust-aws-tui

2. Build and install:

cargo install --path .

Usage

• Update config.toml with your AWS profiles and regions.

Basic Navigation

• Use ↑/↓ or k/j to navigate through lists
• Tab to switch between panels
• Enter to select/confirm
• Esc to go back/cancel
• q to quit the application

Step 1: Profile Selection

1. Select an AWS profile from the list

• Use ↑/↓ or j/k to navigate profiles
• Press Enter to select
• Press q to quit

Step 2: Function Selection

1. Select an AWS profile from the list
2. Choose a region
3. Browse or search through the Lambda functions list
4. Press Enter to view logs for the selected function

Time Range Selection

• Choose from predefined ranges:
  • Last 15 minutes
  • Last hour
  • Last 3 hours
  • Last 24 hours
• Or select "Custom Range" to specify exact dates and times

Log Viewing

• Use ↑/↓ to scroll through logs
• Type to search/filter logs in real-time
• Ctrl+C to copy selected log entry
• f to toggle full-screen mode

Toggle detail view with Enter

Configuration

AWS Credentials

Ensure your AWS credentials are properly configured:

~/.aws/credentials

[default] aws_access_key_id = YOUR_ACCESS_KEY aws_secret_access_key = YOUR_SECRET_KEY

[other-profile] aws_access_key_id = OTHER_ACCESS_KEY aws_secret_access_key = OTHER_SECRET_KEY

~/.aws/config

[profile default] region = us-west-2

[profile other-profile] region = eu-west-1

Cache Configuration

The application caches function lists to improve performance. Cache files are stored in:

• Linux/macOS: ~/.cache/aws-lambda-logs-viewer/
• Windows: %LOCALAPPDATA%\aws-lambda-logs-viewer\

To clear the cache, delete the cache directory or use the --clear-cache flag when launching the application.

Troubleshooting

Common Issues

1. No AWS profiles found

   • Verify AWS credentials file exists
   • Check file permissions
   • Ensure proper file format

2. Cannot fetch Lambda functions

   • Verify AWS credentials are valid
   • Check IAM permissions
   • Ensure network connectivity

3. Slow function loading

   • Consider using the cache feature
   • Check network latency
   • Verify AWS API rate limits

Required IAM Permissions

Minimum IAM policy required:

{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action": [ "lambda:ListFunctions", "logs:GetLogEvents", "logs:FilterLogEvents", "logs:DescribeLogStreams", "logs:DescribeLogGroups" ], "Resource": "*" } ] }

Contributing

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.