Lambda python api gateway example
In this tutorial, you use Amazon API Gateway to create a REST API and a resource ( Show
The
Using API Gateway with Lambda also provides advanced capabilities, such as:
For more information about these API Gateway features, see Set up a proxy integration with a proxy resource in the API Gateway Developer Guide. Sections
PrerequisitesThis tutorial assumes that you have some knowledge of basic Lambda operations and the Lambda console. If you haven't already, follow the instructions in Create a Lambda function with the console to create your first Lambda function. To complete the following steps, you need a command line terminal or shell to run commands. Commands and the expected output are listed in separate blocks:
You should see the following output:
For long commands, an escape character ( On Linux and macOS, use your preferred shell and package manager. On Windows 10, you can install the Windows Subsystem for Linux to get a Windows-integrated version of Ubuntu and Bash. Create an execution roleCreate an execution role. This AWS Identity and Access Management (IAM) role uses a custom policy to give your Lambda function permission to access the required AWS resources. Note that you must first create the policy and then create the execution role. To create a custom policy
To create an execution role
Create the functionThe following code example receives an API Gateway event input and processes the messages that this input contains. For illustration, the code writes some of the incoming event data to CloudWatch Logs. Test the functionTest the Lambda function manually using the following sample event data. You can invoke the function using the To test the Lambda function (AWS CLI)
Create a REST API using API GatewayIn this section, you create an API Gateway REST API ( When your API method receives an HTTP request, API Gateway invokes your Lambda function. Create the APIIn the following steps, you create the To create the API
Create a resource in the APIIn the following steps, you create a resource named To create the resource
Create a POST method on the resourceIn the following steps, you create a To create the method
Create a DynamoDB tableCreate the DynamoDB table that your Lambda function uses. To create the DynamoDB table
Test the setupYou're now ready to test the setup. You can send requests to your To create an item in your DynamoDB table Your Lambda function can use the
The test results should show status To update the item in your DynamoDB table You can also update items in the table using the
The test results should show status Clean up your resourcesYou can now delete the resources that you created for this tutorial, unless you want to retain them. By deleting AWS resources that you're no longer using, you prevent unnecessary charges to your AWS account. To delete the Lambda function
To delete the execution role
To delete the API
To delete the DynamoDB table
How do I run a Lambda using API gateway?Adding an endpoint to your Lambda function. Open the Functions page of the Lambda console.. Choose a function.. Under Function overview, choose Add trigger.. Select API Gateway.. Choose Create an API or Use an existing API. New API: For API type, choose HTTP API. ... . For Security, choose Open.. Choose Add.. How do I create API gateway in Python?Create the API. To start, from the API Gateway page, click the “Get Started” button to create a new API:. Select “New API”, and then provide a descriptive name, like code_execute_api : ... . Select “Create Resource” from the “Actions” drop-down.. Name the resource execute , and then click “Create Resource”.. How do I create a Lambda API in Python?Create a Lambda function using Python. Connect the Lambda function to AWS API Gateway and AWS DynamoDB.. Define the REST API.. Set up the serverless infrastructure.. Code the Lambda functions.. Create the API gateway.. Deploy and test the API gateway.. How do you build API in AWS AWS Lambda and API gateway?Create an API using Amazon API Gateway. Sign in to the AWS Management Console and open the AWS Lambda console.. Choose Create Lambda function.. Choose Use a blueprint.. Enter microservice in the search bar. Choose the microservice-http-endpoint blueprint.. Configure your function with the following settings.. |