Add support to execute function directly from AWS SDK

[ned-kelly]

• Previously it was not possible to call a lambda function while running serverless in "offline mode" from within the AWS SDK
• This function adds support for the AWS SDK to 'invoke' the lambda function by specifying a "custom" endpoint (see example below):

Example of invoking a lambda function using this fix is as follows:

var AWS = require('aws-sdk');
AWS.config.region = 'us-east-1';

let lambda = new AWS.Lambda({
    region: 'us-east-1',
    endpoint: 'http://localhost:4000'
})

lambda.invoke({
    FunctionName: 'my-project-dev-myLambda', // the lambda function we are going to invoke
    Payload: JSON.stringify({
        "some-key": "some-value",
        "other-key": false
    })
}, function(err, data) {
    if (err) {
        console.error(err);
    } else {
        console.dir(data);
    }
})

[mattia85]

Hello authors,
do you think you'll merge this pull request in a short time?
Without this update it's not possible to invoke a lambda function using aws sdk.

Thanks

[ned-kelly]

Hi @araptarchis - Any chance you can merge this in for the rest of the community?

Thanks,

[Raph22]

Up. I need this too.

[ned-kelly]

Hi Guys,

6 Months ago, i submitted a PR and it's not yet been merged....

I'm considering making my fork of this project a new project so the rest of the community can merge the other changes based on my fork... Any objections here?

I know that a lot of end-users are looking for this functionality to make it into the NPMJS project - Give me a thumbs-up if it's worth my time doing this and anyone else would benefit here?

Cheers,