olympus-athena

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middle station logic engine

Most of the traffic of the middle station system comes from multiple systems, many of different logic dispose on same business.
middle-logic-engine support the front-system define a business identity, and use process engine handle all the different logic.
also support extend-point on satisfy certain conditions.
Follow the DDD driver model

architecture

Basic Architecture

Concepts

DDD driver model has three layer of hold system:

• business system scope: front business system
• business middle system scope: assembly capability domain provides the business process
• ability scope: specific business capabilities

middle-logic-engine working on business middle system scope, define business process, add extend point, business scenario and life cycle.

guide

• Step 1: engine needs at last one SceneProcessConfiguration, to description the class is engine scene configuration, and @SceneProcess for define a process.
• Step 2: on spring main class, @EnableExtendPointAutoConfiguration({SceneProcessConfiguration.class}) to activate engine，require one or more SceneProcessConfiguration to load process
• Step 3: in process define, implements StandardProcess<Req, Resp>, Req means parameter, and Resp means a empty that will fill in the process, so Req and Resp both must create before process start
• Step 4: instantiation a scheme to identify which business scene, like 全脸路流转流程, in this case, also have biz argument, biz for extension runner to match which ext execute is current process. ext needs Template,

  @Template
  public class OrderTemplate implements ExtensionTemplate {
  
      @Override
      public boolean adapterTemplate(BusinessScheme businessScheme) {
          return true;
      }
  
  
      @Override
      public String[] ofBizChannels() {
          // satisfy this condition
          return new String[]{"P担"};
      }
  
      @Override
      public Class<? extends Extension>[] ofExtension() {
          // this is ext will run in current process
          return new Class[]{OrderExtensionImpl.class};
      }
  }

• Step 5: