Featws Ruller

• The featws-ruller project is an implmentation of the grule-rule-engine, used to evalute rulesheets(.grl)

Required Software

• You must have the Go Programming Language installed in your machine to run this project. You can get the official download here.

• Clone the featws-transpiler repository to your local machine and make sure both transpiler and ruller project are in the same folder. You can find the featws-transpiler repository here.

Initializate the project

• Clone this project to your local machine.
• On main.go folder (../featws-ruller/main.go), open your local terminal and type the command go run main.go, if your OS is windows, you can by build and run the executable go build && ./featws-ruler.exe, or if your OS is mac, type the command go build -o ruller && ./ruller $@.

Testing diferents rulesheets

• Check if you have in your workspace the featws-transpiler and copy the path from .grl file for the new case, you can find that on the cases tests -> cases
• Now just replace the env variable "FEATWS_RULLER_DEFAULT_RULES" on .env file on ruller, with the new path, and run like the instructions above.

Testing rulesheet with resolvers

• To test if the resolver are loaded, you have to set the featws-resolver-bridge URL, on the .env file to.

Load a rulesheet from remote source

• To load a rulesheet from a remote soure, just change the .env variable "FEATWS_RULLER_RESOURCE_LOADER_URL" pointed to your URL.

Using main endpoints

By default the port will be :8000

• GET http://localhost:YOURSETTEDPORT/

  • Will return simple message to client such as: "FeatWS Ruller Works!!!"

• POST http://localhost:YOURSEETEDPORT/api/v1/eval

  • On this end point you must have to pass a body, witch is the parameters setted by rulesheet folder on the featws-transpiler. Using case 0001 for example the body should be:

       {
          "mynumber": "45"
       }

    • Sending the request, response should be something like that: (this response difined by .featws file on ruleshet folder, in that case is false because the condition is mynumber > 12)

        {
          "myboolfeat": false
        }

• GET http://localhost:YOURSEETEDPORT/swagger/index.html

  • On your browser, you can see the swagger documentation of the api.

• GET http://localhost:YOURSEETEDPORT/health/live?full=1

  • This endpoint will check the live status of the application, just like that:

    {
      "goroutine-threshold": "OK"
    }

• GET http://localhost:YOURSEETEDPORT/health/ready?full=1

  • This endpoint will check the ready status of the services used by ruller project

  {
  "goroutine-threshold": "OK",
  "resolver-bridge": "OK",
  "resource-loader": "OK"
  }

GoDoc

To access the GoDoc documentation, first install GoDoc on your machine. Open a terminal and type:

go get golang.org/x/tools/cmd/godoc

Then run the following command in the repository terminal:

godoc -http=:6060

GoDoc will run on localhost:6060. To access the GoDoc documentation, just click here.