lambda-echo-custom-api

Lambda Echo Message with Custom Rest API Application

A serverless function that echos a message submitted via a URL. This is an example of a serverless application that consists of one Lambda function and a custom Rest API and deployment stage.

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Preliminaries (No need to repeat if you've already completed these from the lambda-echo example.)

This example uses a Serverless Application Model (SAM) template which is transformed into CloudFormation before deployment. Before you attempt to run the build.sh script, you'll need to execute the following tasks:

• Install SAM CLI for your platform -- Test SAM installation by entering sam --version -- The output will resemble: SAM CLI, version 1.24.1
• Create an S3 bucket via the AWS Management Console with a folder to hold deployment artifacts -- Example: my-deployment-bucket-us-east-1/sam
• Edit the build.sh file -- Change the bucket name and prefix to reflect the bucket and folder you created above

Deploying

Deploying actually consists of two steps:

• Package -- Run ./build.sh dev oh package
• Deploy -- Run ./build.sh dev oh deploy

If all goes well, you will need to approve the change set:

Enter 'y' If everything deploys successfully, your output will resemble the following:

Testing The Message Echo Function

Get the URL from the last template Output shown above. Example: https://4firoj0ehc.execute-api.us-east-2.amazonaws.com/Prod/echo?message=This works! ...and paste it into the browser and hit return.You should see the reply:

Experiment with different message parameters.