Founders and Coders Aws-lambda-workshop

Build a simple version of Twitter using AWS Lambda!!

A one day introductory workshop for students at Founders and Coders

###STEP 1 Create an s3 bucket to save messages

###STEP 2 Create a Lambda Function to save a message to the s3 bucket (you can write this directly into the AWS Lambda console) If you need - refer to this repo (although it uses promises which you don't need to use!). Save the tweets as json files.

in the event object you need to specify both the 'message' and the 'bucketName' e.g.
make sure the lambda has the correct role and permissions to save to s3

{
  message: 'my first tweet',
  bucketName: 'twitter-db'
}

TEST steps 1 and 2 have been done correctly by doing a test invocation of the s3 save lambda function in the AWS console using a test event object. Create a Check the s3 bucket to see if the tweet has been saved

###STEP 3 Create a Lambda function to retrieve messages from an s3 bucket

in the event object you need to specify the 'bucketName'
remember you need to first list all the objects in the folder and then get the contents of each file
make sure the lambda has the correct role and permissions to read from s3

TEST step 3 has been done correclty by doing a test invocation of the s3 get lambda

MAKE SURE STEPS 1, 2, and 3 work!! Then move on to step 4 if you have time!

###STEP 4 Create two endpoints on the api gateway:

/savemessage
/getmessage

Then

Connect the /savemessage endpoint to the s3-save lambda
Connect the /getmessage endpoint to the s3-get lambda

Get your API invoke URL!

###STEP 4 Create a simple front end with a text input field and a submit button. The submit button should trigger the s3-save lambda. When the page loads trigger the s3-get lambda.

Useful References

nikhilaravi / aws-lambda-workshop

Founders and Coders Aws-lambda-workshop

About