The aws lambda command is a part of the AWS Command Line Interface (CLI) and serves as a CLI tool for interacting with AWS Lambda, the serverless computing service provided by Amazon Web Services.
Here’s an overview of the aws lambda command and its functionality:
- Function Management: The aws lambda command allows you to create, update, and delete Lambda functions. You can specify the runtime, code, and configuration settings for your functions. It also provides commands to list and retrieve information about existing Lambda functions.
- Invocation and Testing: You can invoke Lambda functions using the aws lambda command. This allows you to trigger the execution of your functions and pass input parameters. Additionally, the command provides options to simulate event sources, enabling you to test your functions locally or on AWS.
- Versioning and Aliases: AWS Lambda supports versioning and aliases to manage different versions of your functions. The aws lambda command enables you to publish new versions, create and manage aliases, and associate versions or aliases with specific Lambda functions.
- Event Source Mapping: Lambda functions can be triggered by various event sources, such as AWS services or custom applications. The aws lambda command allows you to configure event source mappings, including those for services like Amazon S3, Amazon DynamoDB, and Amazon Kinesis.
- Permissions and Access Control: With the aws lambda command, you can manage the permissions and access control for your Lambda functions. You can add, update, or remove resource-based policies and execution roles that define the permissions granted to the function.
- Monitoring and Logging: The aws lambda command provides commands to retrieve and display logs and metrics associated with your Lambda functions. You can monitor the execution and performance of your functions, as well as troubleshoot any issues.
The aws lambda command allows you to interact with AWS Lambda programmatically, automate various tasks, and integrate Lambda management into your scripts and workflows. It provides a convenient way to manage your serverless functions and leverage the power of AWS Lambda through the command line.
aws lambda Command Examples
1. Run a function:
# aws lambda invoke --function-name name path/to/response.json
2. Run a function with an input payload in JSON format:
# aws lambda invoke --function-name name --payload json /path/to/response.json
3. List functions:
# aws lambda list-functions
4. Display the configuration of a function:
# aws lambda get-function-configuration --function-name name
5. List function aliases:
# aws lambda list-aliases --function-name name
6. Display the reserved concurrency configuration for a function:
# aws lambda get-function-concurrency --function-name name
7. List which AWS services can invoke the function:
# aws lambda get-policy --function-name name