The Amazonica test for the AWS Lambda API (link) shows a simple example of creating a Lambda function from a Javascript blob (role is an ARN string for a role that can create Lambdas):
(def handler "exports.helloWorld = function(event, context) {
console.log('value1 = ' + event.key1)
console.log('value2 = ' + event.key2)
console.log('value3 = ' + event.key3)
context.done(null, 'Hello World')
}")
(create-function :role role :function handler)
Does anyone know if create-function can create a Lambda from a jar? Would simply passing a file stream or a binary string of the jar to create-function be a bad idea, even if it did work?
I suppose I could just use a bash script with the AWS CLI to create a Lambda from a jar, but first I wanted to check if there is a known straightforward method of doing this in Clojure.
Another option would be to upload the jar to an S3 bucket and then let a CloudFormation script deploy it, based on the example here. It seems a little silly though, to have an S3 bucket just to hold build artefacts, when Lambda will be storing them itself.
You definitely can do the upload via S3, I have an example of doing so here: https://github.com/langford/clj-aws-lambda-example
Very interested in this method as well. I agree the pit stop at S3 seems like it could be removed.