Building a Ruleset from Json

[ArunNKutty]

package main

import (
"github.com/hyperjumptech/grule-rule-engine/ast"
"github.com/hyperjumptech/grule-rule-engine/builder"
"github.com/hyperjumptech/grule-rule-engine/engine"
"github.com/hyperjumptech/grule-rule-engine/pkg"
)

func main() {

dataContext := ast.NewDataContext()

userData := []byte(`{"name":"John", "age":40,"message":"Hello World"}`)
err := dataContext.AddJSON("MF", userData)

if err != nil {
	panic(err)
}

knowledgeLibrary := ast.NewKnowledgeLibrary()
ruleBuilder := builder.NewRuleBuilder(knowledgeLibrary)

const drls = `{
	"name": "Age Check",
	"desc": "Check for age",
	"salience": 10,
	"when": "MF.Age == 40",
	"then": [
		"Log(\"Age is 40\")"
		]	
}`

ruleset, err := pkg.ParseJSONRule([]byte(drls))
if err != nil {
	panic(err)
}
errr := ruleBuilder.BuildRuleFromResource("TutorialRules", "0.0.1", pkg.NewBytesResource([]byte(ruleset)))
if errr != nil {
	panic(errr)
}

knowledgeBase := knowledgeLibrary.NewKnowledgeBaseInstance("TutorialRules", "0.0.1")

engine := engine.NewGruleEngine()
err = engine.Execute(dataContext, knowledgeBase)
if err != nil {
	panic(err)
}

}

I am getting the following error :

ERRO[0000] GRL error, after '[rule Age]' and then unexpected 'Check' lib=grule struct=GruleParserV3Listener
ERRO[0000] GRL syntax error. got got 1 error(s) in grl the script lib=grule-rule-engine package=builder
ERRO[0000] 0 : grl error on 1:9 extraneous input 'Check' expecting {'{', SALIENCE, DQUOTA_STRING, SQUOTA_STRING} lib=grule-rule-engine package=builder

Any help is highly appreciated

[niallnsec]

I believe the issue here is that you are using a rule name which has a space in it, which is not allowed in GRL syntax. There should definitely be a more readable error printed though.