Quarkus and BPMN Sample for Automatic Loan Approval

An integration of BPMN workflow using Kogito, and Quarkus Framework. This shows BPMN capability to validate and process REST API with a specific JSON format and gives response based on workflow.

Also having the capability to connect BPMN workflow with external existing database thru Quarkus database functionality.

Risk Table

Business Workflow

Build

$ mvn clean package -s settings.xml

Run

$ java -jar .\target\quarkus-app\quarkus-run.jar

Test

$ curl  -X POST http://localhost:8080/customer_risk  \
    -H 'content-type: application/json'  \
    -H 'accept: application/json'   \
    -d '{"name" : "Regular User", "salary":500, "age": 15}'
    
{"id":"c4fcc5eb-9aab-4c99-8620-5ff1c27be79e","name":"Regular User", "risk":"High","salary":500,"age":15,"status":"Loan is Rejected because Customer is High Risk"}

Endpoints

Open http://localhost:8080/q from web browser to see all the BPMN endpoints.

Unit Tests

    @Test
    public void testHighRiskCustomer() {
        given()
                .body("{  \"name\":\"Regular User\", \"age\": 15, \"salary\": 300 }")
                .contentType(ContentType.JSON)
                .when()
                .post("/customer_risk")
                .then()
                .statusCode(201)
                .body("'status'", equalTo("Loan is Rejected because Customer is High Risk"));
    }

Database

    create table t_blacklist
    (
        id int auto_increment,
        name varchar(16) not null,
        constraint t_blacklist_pk
            primary key (id)
    );

Calling Quarkus Script from Inside BPMN

    com.edw.service.BlacklistService blacklistService = new com.edw.service.BlacklistService();
    if(blacklistService.isBlacklist(name)) {
        kcontext.setVariable("blacklist", true);
        kcontext.setVariable("status", "Loan is Rejected because Customer is Blacklisted");
    }    
    else {
        kcontext.setVariable("blacklist", false);
    }

edwin/quarkus-bpmn