Dynamic and facade implementation of Google Endpoints with Scala JS

Google Endpoints generates Javascript that mirrors all REST calls to backend. With Scala JS, these scripts can be used in two different ways: dynamic or facade.

Dynamic

This is the easiest solution. If you know the names and the parameters to backend I would recomend this approch. All you need to do is to type vars and defs to js.Dynamic and then use them just as Javascript. Example of loading your API:

listApiAsDynamic = EndpointsFacade.gapi.client("list").listApi

And to use a method with csv as parameter:

listApiAsDynamic.post(literal(csv = validatedText))

"literal(csv = validatedText)" is like Javascript "{csv : validatedText}"

Facade

This is approch needs more work since you need to mirror the Javascript generated by Google Endpoints, but will give you types and the structure of the Javascript.

Example of loading your API:

listApi = EndpointsFacade.gapi.client.list.listApi

This works since you have defined the API in a facade like in this example:

https://github.com/AIMMOTH/endpoints-objectify-oauth2-scala-scalajs-angular/blob/master/src/main/scalajs/io/cenet/endpoints/EndpointsFacade.scala

You know which functions are available since you have made a complete facade. Example:

https://github.com/AIMMOTH/endpoints-objectify-oauth2-scala-scalajs-angular/blob/master/src/main/scalajs/io/cenet/endpoints/ListFacade.scala

And therefore it's easy make a call with types:

listApi.get(IdRequest(input.toLong))

Scala JS with Angular and Google Endpoints

Finally done with a simple implementation with Scala JS of Angular and Google Endpoints.

Scala

All backend and frontend is done in Scala with shared logic. Made a simple validation of input which is used in frontend when trying to post, and in backend when it receives.

Google Endpoints

A Javascript is generated which mirrors all exposed methods. This is then used by Scala JS to make all requests to backend.

https://github.com/AIMMOTH/endpoints-objectify-oauth2-scala-scalajs-angular

Google Endpoints + Objectify

Created a small project combining Google Endpoints with Objectify. Added page with a simple JavaScript introduction.

https://github.com/AIMMOTH/endpoints-objectify-fabric

Fabric

There is a small sample for creating some data and getting it.

Creating

As a sample, it's possible to create three different entities

• EntityId, with POST, creates a new id
• EntityData, with POST
• EntityPrimitives, with POST

When posting an EntityId, the response will be its new id.
When posting an EntityData or EntityPrimitives, use the same id as EntityId.

Fetching

To get each type, there's a GET path like

/entityid/123

/entitydata/123

To get the EntityId and all children with the same id, it's possible to use

/entityid/123/entitydata+entityprimitives/

Google App Engine + Scala with Jersey + ScalaJs

Have been interested in ScalaJs for a while and wanted to use it and Scala with Jersey in Google App Engine. This is a first try to combine them.

GitHub Repository

https://github.com/AIMMOTH/gae-scala-jersey-scalajs