Modern Reactive CQRS Architecture Microservice development framework based on DDD and EventSourcing | 基于 DDD & EventSourcing 的现代响应式 CQRS 架构微服务开发框架
APACHE-2.0 License
Domain-Driven | Event-Driven | Test-Driven | Declarative-Design | Reactive Programming | Command Query Responsibility Segregation | Event Sourcing
Use Wow Project Template to quickly create a DDD project based on the Wow framework.
WaitStrategy
: SENT
、PROCESSED
WaitStrategy
:SENT
Mode, TheAddCartItem
command write request API After 2 minutes of stress testing, the average TPS was 59625, the peak was 82312, and the average response time was 29 ms.
WaitStrategy
:PROCESSED
Mode, TheAddCartItem
command write request API After 2 minutes of stress testing, the average TPS was 18696, the peak was 24141, and the average response time was 239 ms.
WaitStrategy
:SENT
Mode, TheCreateOrder
command write request API After 2 minutes of stress testing, the average TPS was 47838, the peak was 86200, and the average response time was 217 ms.
WaitStrategy
:PROCESSED
Mode, TheCreateOrder
command write request API After 2 minutes of stress testing, the average TPS was 18230, the peak was 25506, and the average response time was 268 ms.
Automatically register the
Command
routing processing function (HandlerFunction
), and developers only need to write the domain model to complete the service development.
Given -> When -> Expect .
Given -> When -> Expect .
AggregateVerifier
)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()
}
}
SagaVerifier
)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()
}
}
Single Class | Inheritance Pattern | Aggregation Pattern |
---|---|---|