Re: Using amber with AWS Lambda Functions

> Hi,
> Since there is an AWS SDK for node/ javascript, it should be possible to
> write code with amber to interact with the AWS API.
> This would be extremly cool and usefull - you could write backend code
> with amber to orchestrate AWS services. Then expose the backend via AWS
> API-Gateway/ REST-Resource and access it from the Amber UI that might be
> hosted in an S3 bucket (or any other static file hosting). If amber was
> able to use/ include the AWS Amplify framework on the UI part, we'll get
> authentication/ authorization/ user management and secure calls to the
> backend for free.

> Sounds like a really nice serverless application stack - and it would be
> a dream to use Smalltalk on the front- and backend.
> To get started I would need to export Amber/ Smalltalk code in a way
> that I can reference single functions to be used as AWS Lambda funtion.
> Below is a minimal Lambda function - it's a file that's called index.js.
> During the deployment to AWS I declare "index.handler" es the
> entry-point of the Lambda-Function.
>
> |
> exports.handler = async (event) => {
>      // TODO implement
>      const response = {
>          statusCode: 200,
>          body: JSON.stringify('Hello from Lambda!'),
>      };
>      return response;
> };
> |

> Can anyone point me in the right direction, if it would be possible, to
> export code from amber that looks like the above snippet?
> Dependencies and even own runtimes can be included too if needed.
>
> Sadly (or luckily?) I was able to avoid using Javascript since it became
> so popular - my experience with javascript/ node and the whole ecosystem
> is very limited.
>
> Regards
> Stefan

> Herby,
> Thank you so much for taking the time to write such a detailed answer!
> I’ll follow your instructions.
> I’ve been developing these kind of applications with react for the UI
> and with python for the backend - using Smalltalk on both sides would be
> so cool!
> Serverless + Smalltalk - sounds like a Perfect match ;-)
> Regards
> Stefan
>
> Herby Vojčík <[hidden email] <mailto:[hidden email]>> schrieb am Fr.
> 17. Mai 2019 um 19:52:
>
>     On 17. 5. 2019 16:37, Stefan Krecher wrote:
>      > Hi,
>      > Since there is an AWS SDK for node/ javascript, it should be
>     possible to
>      > write code with amber to interact with the AWS API.
>      > This would be extremly cool and usefull - you could write backend
>     code
>      > with amber to orchestrate AWS services. Then expose the backend
>     via AWS
>      > API-Gateway/ REST-Resource and access it from the Amber UI that
>     might be
>      > hosted in an S3 bucket (or any other static file hosting). If
>     amber was
>      > able to use/ include the AWS Amplify framework on the UI part,
>     we'll get
>      > authentication/ authorization/ user management and secure calls
>     to the
>      > backend for free.
>
>     Seems like a lot of concepts here.
>
>     To use any JS library from UI part of Amber app, it's pretty easy -
>     include a JS library in a project dependencies, `import:` it in a
>     package that uses it and call via Smalltalk message; more or less
>     how it
>     is shown in old wiki article here:
>     https://github.com/amber-smalltalk/amber/wiki/From-smalltalk-to-javascript-and-back.
>
>      > Sounds like a really nice serverless application stack - and it
>     would be
>      > a dream to use Smalltalk on the front- and backend.
>      > To get started I would need to export Amber/ Smalltalk code in a way
>      > that I can reference single functions to be used as AWS Lambda
>     funtion.
>      > Below is a minimal Lambda function - it's a file that's called
>     index.js.
>      > During the deployment to AWS I declare "index.handler" es the
>      > entry-point of the Lambda-Function.
>      >
>      > |
>      > exports.handler = async (event) => {
>      >      // TODO implement
>      >      const response = {
>      >          statusCode: 200,
>      >          body: JSON.stringify('Hello from Lambda!'),
>      >      };
>      >      return response;
>      > };
>      > |

>
>     If you ask how to compile amber to be run out of browser, there is
>     possibility to compile Amber project as a node executable (`amber` cli
>     itself is written in Amber), there is not yet any try of which I
>     know to
>     wrap it in Lambda-compatible way, but it should be possible. Anyway,
>     any
>     call would need to load much more than the code itself - the whole
>     kernel with classes and methods; but similarly to how node apps are
>     built, an export usable for Lambda should be able to be built as well.
>     It is basically matter of setting up the JS build stack - `grunt
>     deploy`
>     building one js file for UI project deployments is one such setup,
>     `build:cli` task in Amber's own Gruntfile.js which build the
>     aforementioned `amber` cli as node executable is another such setup; a
>     third setup that instructs JS build machinery to produce
>     Lambda-consumable artifact would be third such setup.
>
>     It seems to me that starting with "node app" setup is the easiest way -
>     maybe install Amber for development (as shown in
>     https://lolg.it/amber/amber/src/master/CONTRIBUTING.md#setup-your-amber-clone)
>
>     and take your clues from the way `amber` cli is built, changing the
>     wrapping so the output is lambda-compatible.
>
>      > Can anyone point me in the right direction, if it would be
>     possible, to
>      > export code from amber that looks like the above snippet?
>      > Dependencies and even own runtimes can be included too if needed.
>      >
>      > Sadly (or luckily?) I was able to avoid using Javascript since it
>     became
>      > so popular - my experience with javascript/ node and the whole
>     ecosystem
>      > is very limited.
>      >
>      > Regards
>      > Stefan
>
>     Herby
>
> --
> Dipl.-Wirtsch.-Inf. Stefan Krecher
> Neulander Str. 17, 27374 Visselhövede
> Tel +49(0)4262 958848
> mobil +49(0)172 4396852
>
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