moznion / aws-lambda-perl5-layer Goto Github PK

Thank you so much for something incredibly useful. Can you please expand on the documentation, please? There are SWS terms that you just throw out there that don't mean anything to us that are still working through the starter Cloud Practitioner stuff.

Thanks!

Hi, I'm just checking out this layer and it seems incredibly helpful! Thanks for providing it.

While reading the code I notice that you don't handle exceptions but rather rely on it calling the default script exception handler. Have you considered using an eval block around the function call to trap exceptions and report them to https://docs.aws.amazon.com/lambda/latest/dg/runtimes-api.html#runtimes-api-invokeerror . Indeed after that you might want to do the same with the require statement to catch compile errors too.

Anyway, thanks a lot and I expect I'll be using this layer going forward! Cheers.

Is this layer compatible with Amazon Linux OS version 2018.03? https://aws.amazon.com/blogs/compute/upcoming-updates-to-the-aws-lambda-execution-environment/

If not, could you please re-build the layer?

I added the Perl layer with the Using Provided Layers approach but I keep receiving the error:

use: command not found

The Lambda function bootstrap file is successfully finding the pl file but it doesn't understand that perl code inside of it.

@moznion, are there additional steps to use the provided layer?

For the past couple of hours I've been trying to setup exiftool on an Lambda instance and have a Node handle invoke it, process the output and send it back. I've managed to set this up easily for ffprobe since I could just upload it as a static binary (although now I realise that I can use a layer for that).
Since exiftool is a script I was trying to install perl somehow and finally, after a lot of digging I found this nice solution.

I'm using the Serverless framework and my .yml is minimal:

provider:
  name: aws
  runtime: nodejs10.x
  versionFunctions: false
  region: eu-central-1

functions:
  hello:
    handler: handler.hello
    layers:
      - arn:aws:lambda:eu-central-1:652718333417:layer:perl-5_26-layer:1

The handler function is also minimal, it executes an command that is sent to it:

module.exports.hello = (event, context, callback) => {
  if (event.cmd) {
    const child = child_process.exec(event.cmd, (error, stdout, stderr) => {
      // Resolve with result of process
      callback(null, { error, stdout, stderr });
    });
  }
}

And I'm sending the follwing json:

{
  "cmd": "perl -ver"
}

It deploys without problems but when I try to invoke it, I get the following error:

{
    "error": {
        "killed": false,
        "code": 127,
        "signal": null,
        "cmd": "perl -ver"
    },
    "stdout": "",
    "stderr": "perl: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: No such file or directory\n"

I'm still new to the whole serverless architecture stuff so there may be a simple solution but I can't seem to find it. Any help would be appreciated.

I'd like to ask how can we add any perl file to lambda folder?