Allow custom log function to be provided

[Limess]

Currently this library logs using console methods.

We're using structured logging in JSON using a library (Pino but that's not relevant here) in all of our applications, including AWS Lambda functions. Using this library currently results in unstructured log statements in our log aggregation which makes queries difficult.

I'd suggest adding a logger parameter to an options object and then calling that instead of console, defaulting to console if none is provided.

e.g.

serverless(handler, {logger});

where logger has the same interface as console.

[gr2m]

This will be possible via #59

const { createLambdaFunction, createProbot } = require("@probot/adapter-aws-lambda-serverless");
const appFn = require("./");

module.exports.webhooks = createLambdaFunction(appFn, {
  probot: createProbot({
    defaults: { 
      log: logger
    }
  })
});

Also with Probot v11, Probot itself is using pino, too :) We created a custom transport: https://github.com/probot/pino/

GitHub

probot/pino

🛠️ formatting and error captioning for probot logs - probot/pino

[github-actions]

🎉 This issue has been resolved in version 2.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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