领域建模即微服务开发 | Wow 2.10.0 发布 - 软件

12.23 源创会 · 上海站，聊聊 LLM 基础设施

架构图

WaitStrategy: PROCESSED

下单

请求
详细报告 (PDF)-SENT
详细报告 (PDF)-PROCESSED

WaitStrategy: SENT

WaitStrategy: PROCESSED

事件源

OpenAPI (Spring WebFlux 集成)

自动注册命令路由处理函数 (HandlerFunction) ，开发人员仅需编写领域模型，即可完成服务开发。

测试套件：80%+ 的测试覆盖率轻而易举

Given -> When -> Expect .

前置条件

理解 领域驱动设计：《实现领域驱动设计》、《领域驱动设计：软件核心复杂性应对之道》
理解 命令查询职责分离（CQRS）
理解 事件源架构
理解 响应式编程

Example

订单服务（Kotlin）

Example-Order

银行转账（JAVA）

Example-Transfer

单元测试套件

80%+ 的测试覆盖率轻而易举。

Given -> When -> Expect .

Aggregate Unit Test (`AggregateVerifier`)

Aggregate Test

 internal class OrderTest {      @Test     private fun createOrder() {         val tenantId = GlobalIdGenerator.generateAsString()         val customerId = GlobalIdGenerator.generateAsString()          val orderItem = OrderItem(             GlobalIdGenerator.generateAsString(),             GlobalIdGenerator.generateAsString(),             BigDecimal.valueOf(10),             10,         )         val orderItems = listOf(orderItem)         val inventoryService = object : InventoryService {             override fun getInventory(productId: String): Mono<Int> {                 return orderItems.filter { it.productId == productId }.map { it.quantity }.first().toMono()             }         }         val pricingService = object : PricingService {             override fun getProductPrice(productId: String): Mono<BigDecimal> {                 return orderItems.filter { it.productId == productId }.map { it.price }.first().toMono()             }         }         aggregateVerifier<Order, OrderState>(tenantId = tenantId)             .inject(DefaultCreateOrderSpec(inventoryService, pricingService))             .given()             .`when`(CreateOrder(customerId, orderItems, SHIPPING_ADDRESS, false))             .expectEventCount(1)             .expectEventType(OrderCreated::class.java)             .expectStateAggregate {                 assertThat(it.aggregateId.tenantId, equalTo(tenantId))             }             .expectState {                 assertThat(it.id, notNullValue())                 assertThat(it.customerId, equalTo(customerId))                 assertThat(it.address, equalTo(SHIPPING_ADDRESS))                 assertThat(it.items, equalTo(orderItems))                 assertThat(it.status, equalTo(OrderStatus.CREATED))             }             .verify()     }      @Test     fun createOrderGivenEmptyItems() {         val customerId = GlobalIdGenerator.generateAsString()         aggregateVerifier<Order, OrderState>()             .inject(mockk<CreateOrderSpec>(), "createOrderSpec")             .given()             .`when`(CreateOrder(customerId, listOf(), SHIPPING_ADDRESS, false))             .expectErrorType(IllegalArgumentException::class.java)             .expectStateAggregate {                 /*                  * 该聚合对象处于未初始化状态，即该聚合未创建成功.                  */                 assertThat(it.initialized, equalTo(false))             }.verify()     }      /**      * 创建订单-库存不足      */     @Test     fun createOrderWhenInventoryShortage() {         val customerId = GlobalIdGenerator.generateAsString()         val orderItem = OrderItem(             GlobalIdGenerator.generateAsString(),             GlobalIdGenerator.generateAsString(),             BigDecimal.valueOf(10),             10,         )         val orderItems = listOf(orderItem)         val inventoryService = object : InventoryService {             override fun getInventory(productId: String): Mono<Int> {                 return orderItems.filter { it.productId == productId }                     /*                      * 模拟库存不足                      */                     .map { it.quantity - 1 }.first().toMono()             }         }         val pricingService = object : PricingService {             override fun getProductPrice(productId: String): Mono<BigDecimal> {                 return orderItems.filter { it.productId == productId }.map { it.price }.first().toMono()             }         }          aggregateVerifier<Order, OrderState>()             .inject(DefaultCreateOrderSpec(inventoryService, pricingService))             .given()             .`when`(CreateOrder(customerId, orderItems, SHIPPING_ADDRESS, false))             /*              * 期望：库存不足异常.              */             .expectErrorType(InventoryShortageException::class.java)             .expectStateAggregate {                 /*                  * 该聚合对象处于未初始化状态，即该聚合未创建成功.                  */                 assertThat(it.initialized, equalTo(false))             }.verify()     } }

Saga Unit Test (`SagaVerifier`)

Saga Test

 class CartSagaTest {      @Test     fun onOrderCreated() {         val orderItem = OrderItem(             GlobalIdGenerator.generateAsString(),             GlobalIdGenerator.generateAsString(),             BigDecimal.valueOf(10),             10,         )         sagaVerifier<CartSaga>()             .`when`(                 mockk<OrderCreated> {                     every {                         customerId                     } returns "customerId"                     every {                         items                     } returns listOf(orderItem)                     every {                         fromCart                     } returns true                 },             )             .expectCommandBody<RemoveCartItem> {                 assertThat(it.id, equalTo("customerId"))                 assertThat(it.productIds, hasSize(1))                 assertThat(it.productIds.first(), equalTo(orderItem.productId))             }             .verify()     } }