Use lambci/docker-lambda for local lambda execution? about localstack HOT 8 CLOSED

Thanks for the suggestion, this definitely looks like a neat solution. It might be worthwhile looking into this, especially if/when we start supporting Node/Java lambdas (currently only Python Lambdas are supported), and to support full parity with the AWS environment.

There are some other issues and feature requests which probably have higher priority, but I would be more than happy to accept a pull request that adds an integration with lambci/docker-lambda.

from localstack.

An initial version of Docker-based Lambda execution is now available. Can you please try to run the following commands from the repository root:

git pull
docker pull atlassianlabs/localstack
make test-docker

You will notice that the output of the last commands contains a few lines like this:

docker run ... lambci/lambda:python2.7 "handler.handler"
...
docker run ... lambci/lambda:nodejs "handler.handler"

If the test runs successfully, then you should be good to start LocalStack in Docker and run your own custom Lambda function tests against it (only Node.js and Python are currently supported):

make docker-run

Please report back if that works for you (plus your environment details, if it does not work). Thanks.

from localstack.

I tried this today. I am able to get the lambda to run a simple function

exports.handler = function(event, context, callback){
   callback(null, "works");
}

But am getting an error

init handler error: TypeError
    at exports.handler (/var/task/read.js:2:11)

from localstack.

ok, scratch that.. I needed to run the 6.10. Proper command for me was...

docker run -v "$PWD":/var/task lambci/lambda:nodejs6.10

from localstack.

Thanks @singledigit, support for 6.10 was still missing when you tested it. In the updated version you can now specify nodejs6.10 as your Lambda runtime (see atlassian-archive/localstack@a240285#diff-2dce34f36977e0b6398556134ff5f411R32). Closing this for now, please re-open if there are any more issues.

from localstack.

I tried this today... basically I ran docker run -it -p 4567-4580:4567-4580 -p 8080:8080 atlassianlabs/localstack and then tried to pipe in a simple nodejs handler and it immediately blew with an SyntaxError: invalid syntax around a constant, even though i usesd the nodejs6.10 runtime.

const docs = `bla bla ${variable}`

What am i doing wrong?

from localstack.

So you call lambci directly.

docker run -v "$PWD":/var/task lambci/lambda:nodejs6.10

For that you don't even need local stack. However, you can link into local stack with something like

docker run --link <localstack-container> -v "$PWD":/var/task lambci/lambda:nodejs6.10

That will allow you to connect to the local stack services. I would love to see an example of configuring local stack lambda to call on lambic.

from localstack.

i was hoping to use the aws --endpoint-url=http://localhost:4574 lambda create-function cli tool... i'll try your way to check it out

from localstack.