Easy Rules with Spring Boot

Simple example with Rule Engine (easy-rules):

• save rules via REST API
  • save composite rules via REST API
• process entity through rules via REST API

Requirements

Java 11

Get started

Run Spring Boot application

./gradlew bootRun

Save simple rule

URL - http://localhost:8080/rules
HTTP Method - POST

{
  "name": "person rule 1",
  "description": "simple person rule for save",
  "priority": 1,
  "condition": "person.item.name == \"some item\"",
  "action": "savePerson"
}

Save composite rule

URL - http://localhost:8080/rules/composite
HTTP Method - POST

{
  "name": "composite person rule 1",
  "rules": [
    {
      "name": "person rule 2",
      "description": "simple person rule for send to vendor one",
      "priority": 1,
      "condition": "person.age > 10",
      "action": "sendPersonToVendorOne"
    },
    {
      "name": "person rule 3",
      "description": "simple person rule for send to vendor two",
      "priority": 1,
      "condition": "person.item.count == 1",
      "action": "sendPersonToVendorTwo"
    }
  ]
}

Process Person through rules

URL - http://localhost:8080/persons
HTTP Method - POST

{
  "name": "some name",
  "age": 18,
  "item": {
    "name": "some item",
    "count": 1
  }
}

Response:

{
  "person rule 1": true,
  "composite person rule 1": true
}

Get available actions

URL - http://localhost:8080/persons
HTTP Method - GET

Response:

[
  "savePerson",
  "sendPersonToVendorOne",
  "sendPersonToVendorTwo",
  "sendPersonToVendorThree"
]

Swagger UI

URL - http://localhost:8080/swagger-ui.html#/