AWS Lambda sample codes

A few of the sample AWS Lambda function codes for common use-cases with Amazon EC2, AWS Lambda & Amazon SNS.

EC2

1. Start/Stop EC2 instances using CloudWatch Event Trigger - start_stop_ec2_instances_with_cloudwatch_event.py

2. Describe EC2's metadata in a region - Associated subnets, Instance ID & NACL-ID for a target VPC - describe_ec2_securitygroup.py

3. Describe all AMIs for your account across all regions - describe_ami.py

Lambda

1. Get underlying Lambda's CPU hardware, /tmp storage, os-release and it's contents - get_cpu_info.py

2. Create "Memory Used" Metrics for your Lambda functions - lambda_memory_plot.py

3. List all Lambda layers and it's info - list_layer_info.py

4. List code storage for a function including all attached layers - lambda_code_size_including_layers.py

5. List code storage for all Lambda functions in a region - lambda_code_size_all_functions.py

6. Get all functions using reserved or provisional concurrency in a region - reserved_concurrency.py

7. Test HTTP connection for your Lambda function inside VPC - http_connection_test.py

8. Check Async queue congestions and delays in processing async events - get_async_invoke_delay.py

9. List Lambda function version(s) using an ENI - lambda_hyperplane_eni_checker.py

SNS

1. List all subscriptions tied to a topic in an account - list_account_topic_subscriptions.py

2. Programmatically create subscription filters for SNS - set_subscription_filters.py

3. Programmatically set SenderID while sending SMS text messages - sender_id.py

4. Programmatically set max price while sending SMS text messages - set_max_price.py

Additional Information

• Refer to the individual .md files for additional information.

Built with

• Python3
• AWS
• Boto3 SDK

Missing Info / Bugs

• 😰 Something broken? Open an issue with a few sample inputs where it breaks. Screenshots help!

• More additional services/use-cases, open a new issue

Contributing

This is an iterative repository, I'll keep adding more sample codes for more use-cases as I come across them. I have tested all scripts using Python3.6 runtime inside Lambda under us-west-2 region, and most of this should work for all Python3 runtimes (Python 2.7 EOL: 😵).

• Fork repo
• Set runtime as Python3 (Python3.6 preferred)
• Send your awesome 🙌 Pull Request with code/.md changes
  • Follow Python's PEP8 coding standards.
  • Commit repo using the Seven Rules
• Your PR gets merged ✅ and a shoutout 📢

Repo structure:

$ tree
.
├── CODE_OF_CONDUCT.md
├── LICENSE
├── README.md
├── ec2-samples
│   ├── describe_ami
│   │   ├── README.md
│   │   └── describe_ami.py
│   ├── describe_ec2_securitygroup
│   │   ├── README.md
│   │   └── describe_ec2_securitygroup.py
│   └── start_stop_ec2_instances_with_cloudwatch_event
│       ├── README.md
│       └── start_stop_ec2_instances_with_cloudwatch_event.py
├── lambda-layer
│   ├── README.md
│   ├── boto3.zip
│   ├── pandasnumpy.zip
│   ├── psycopg2.zip
│   └── requests.zip
├── lambda-samples
│   ├── get_async_invoke_delay
│   │   ├── README.md
│   │   └── get_async_invoke_delay.py
│   ├── get_cpu_info
│   │   ├── README.md
│   │   └── get_cpu_info.py
│   ├── http_connection_test
│   │   ├── README.md
│   │   └── http_connection_test.py
│   ├── lambda_code_size_all_functions
│   │   ├── README.md
│   │   └── lambda_code_size_all_functions.py
│   ├── lambda_code_size_including_layers
│   │   ├── README.md
│   │   └── lambda_code_size_including_layers.py
│   ├── lambda_hyperplane_eni_checker
│   │   ├── README.md
│   │   └── lambda_hyperplane_eni_checker.py
│   ├── lambda_memory_plot
│   │   ├── README.md
│   │   └── lambda_memory_plot.py
│   ├── list_layer_info
│   │   ├── README.md
│   │   └── list_layer_info.py
│   └── reserved_concurrency
│       ├── README.md
│       └── reserved_concurrency.py
├── sns-samples
│   ├── list_account_topic_subscriptions
│   │   ├── README.md
│   │   └── list_account_topic_subscriptions.py
│   ├── sender_id
│   │   ├── README.md
│   │   └── sender_id.py
│   ├── set_max_price_sms
│   │   ├── README.md
│   │   └── set_max_price_sms.py
│   └── set_subscription_filters
│       ├── README.md
│       └── set_subscription_filters.py
└── tmp
    └── images
        ├── AWSLambdaCloudWatchAsyncDelay.png
        └── AWSLambdaCloudWatchMetric.png