Solon Flow Helloworld（通用流编排框架）

探索视频：

1、新建项目

可以用 Solon Initializr 生成一个模板项目。新建项目之后，添加依赖

<dependency>
    <groupId>org.noear</groupId>
    <artifactId>solon-flow</artifactId>
</dependency>

2、添加配置

添加应用配置：

solon.flow:
  - "classpath:flow/*.yml"

添加流处理配置（支持 json 或 yml 格式），例： flow/demo1.chain.yml

id: "c1"
layout: 
  - { id: "n1", type: "start", link: "n2"}
  - { id: "n2", type: "activity", link: "n3", task: "System.out.println(\"hello world!\");"}
  - { id: "n3", type: "end"}

示意图：

3、代码应用

注解模式

import org.noear.solon.annotation.Component;
import org.noear.solon.annotation.Inject;
import org.noear.solon.core.bean.LifecycleBean;
import org.noear.solon.flow.FlowEngine;

@Component
public class DemoCom implements LifecycleBean {
    @Inject 
    private FlowEngine flowEngine;
    
    @Override
    public void start() throws Throwable {
        flowEngine.eval("c1");
    }
}

原生 Java 模式

import org.noear.solon.flow.FlowEngine;

FlowEngine engine = FlowEngine.newInstance();

//加载链配置
engine.load("classpath:flow/*");

//执行
engine.eval("c1");