package me.nicolaferraro.quickstarts.saga.payment;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.model.SagaPropagation;
import org.apache.camel.model.rest.RestParamType;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.stereotype.Component;
@SpringBootApplication
public class CamelSagaPaymentService {
public static void main(String[] args) {
SpringApplication.run(CamelSagaPaymentService.class, args);
}
@Component
static class Routes extends RouteBuilder {
@Override
public void configure() throws Exception {
rest().post("/pay")
.param().type(RestParamType.query).name("type").required(true).endParam()
.param().type(RestParamType.header).name("id").required(true).endParam()
.route()
.saga()
.propagation(SagaPropagation.MANDATORY)
.option("id", header("id"))
.compensation("direct:cancelPayment")
.log("Paying ${header.type} for order #${header.id}")
.choice()
.when(x -> Math.random() >= 0.85)
.throwException(new RuntimeException("Random failure during payment"))
.end();
from("direct:cancelPayment")
.log("Payment #${header.id} has been cancelled");
}
}
}
