mosalat

a rule-engine with custom dsl for golang

Description

this is a rule engine that consists of functions, inputs, and outputs. its pattern consists of multiple rows of: condition | action[s]

it is very good for rule scripting inside a go project. it has serialization capabilities.

Programming language: Go

License: MIT License

Tags: Embeddable Scripting Languages     Scripting     DSL     Rule-engine    

Latest version: v0.0.4

README

Example:

 func now() int64 { return time.Now().Unix() }
 func days(count float64) float64 {
    return count * 24 * 60 * 60
 }

 func main() {
    funcMap := map[string]interface{}{
        "now":  now,
        "days": days,
    }
    inputMap := map[string]interface{}{
        "registered_date": time.Now().Unix(),
        "sales_amount":    2000000,
    }
    outputMap := map[string]interface{}{
        "plan_name": "premium_1",
    }
    output, err := mosalat.Run([]string{
        `now() > registered_date + days(14) && plan_name == "premium_1" | plan_name = "free"`,
        `plan_name == "premium_1" | plan_name = "free"`,
        `plan_name == "free" | feature_1 = true`,
    }, funcMap, inputMap, outputMap) // --> [plan_name: "free", feature_1: true]
 }