Add data classes and aggregate
Add command and events
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@ -3,8 +3,9 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
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plugins {
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id("org.springframework.boot") version "2.3.3.RELEASE"
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id("io.spring.dependency-management") version "1.0.10.RELEASE"
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kotlin("jvm") version "1.3.72"
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kotlin("plugin.spring") version "1.3.72"
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kotlin("jvm") version "1.4.0"
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kotlin("plugin.spring") version "1.4.0"
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kotlin("plugin.jpa") version "1.4.0"
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}
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group = "com.cubetiqs.demo"
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@ -17,9 +18,18 @@ repositories {
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dependencies {
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implementation("org.springframework.boot:spring-boot-starter-web")
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implementation("org.axonframework:axon-spring-boot-starter:4.2.1")
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implementation("io.springfox:springfox-swagger2:2.9.2")
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implementation("io.springfox:springfox-swagger-ui:2.9.2")
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implementation("org.springframework.boot:spring-boot-starter-data-jpa")
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implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
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implementation("org.jetbrains.kotlin:kotlin-reflect")
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implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
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runtimeOnly("org.postgresql:postgresql")
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testImplementation("org.axonframework:axon-test:4.2.1")
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testImplementation("org.springframework.boot:spring-boot-starter-test") {
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exclude(group = "org.junit.vintage", module = "junit-vintage-engine")
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}
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@ -1,24 +1,123 @@
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package com.cubetiqs.demo.axon
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import com.cubetiqs.demo.axon.command.CreditMoneyCommand
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import com.cubetiqs.demo.axon.command.DebitMoneyCommand
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import com.cubetiqs.demo.axon.event.AccountCreatedEvent
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import com.cubetiqs.demo.axon.event.MoneyCreditedEvent
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import com.cubetiqs.demo.axon.event.MoneyDebitedEvent
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import com.cubetiqs.demo.axon.exception.InsufficientBalanceException
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import org.axonframework.commandhandling.CommandHandler
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import org.axonframework.eventsourcing.EventSourcingHandler
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import org.axonframework.modelling.command.AggregateIdentifier
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import org.axonframework.modelling.command.AggregateLifecycle
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import org.axonframework.modelling.command.TargetAggregateIdentifier
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import org.axonframework.spring.stereotype.Aggregate
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import org.springframework.boot.autoconfigure.SpringBootApplication
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import org.springframework.boot.runApplication
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import org.springframework.http.ResponseEntity
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import org.springframework.web.bind.annotation.GetMapping
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import org.springframework.web.bind.annotation.RequestMapping
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import org.springframework.web.bind.annotation.RestController
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import java.io.Serializable
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import java.math.BigDecimal
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import java.util.UUID
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import javax.persistence.Entity
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import javax.persistence.GeneratedValue
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import javax.persistence.GenerationType
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import javax.persistence.Id
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import javax.persistence.Table
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@SpringBootApplication
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class AxonApplication
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fun main(args: Array<String>) {
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runApplication<AxonApplication>(*args)
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runApplication<AxonApplication>(*args)
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}
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@RestController
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@RequestMapping
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class DefaultController {
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@GetMapping
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fun index(): ResponseEntity<Any> {
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return ResponseEntity.ok("ok")
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}
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@GetMapping
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fun index(): ResponseEntity<Any> {
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return ResponseEntity.ok("ok")
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}
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}
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@Entity
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@Table(name = "bank_accounts")
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data class BankAccount(
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@Id
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@GeneratedValue(strategy = GenerationType.AUTO)
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var id: UUID? = null,
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var owner: String? = null,
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var balance: BigDecimal? = null
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) : Serializable
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@Aggregate
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class BankAccountAggregate(
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@AggregateIdentifier
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private var id: UUID? = null,
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private var balance: BigDecimal? = null,
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private var owner: String? = null
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) {
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@CommandHandler
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constructor(command: CreateAccountCommand) {
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AggregateLifecycle.apply(
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AccountCreatedEvent(
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command.accountId,
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command.initialBalance,
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command.owner
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)
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)
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}
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@EventSourcingHandler
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fun on(event: AccountCreatedEvent) {
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id = event.id
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owner = event.owner
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balance = event.initialBalance
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}
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@CommandHandler
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fun handles(command: CreditMoneyCommand) {
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AggregateLifecycle.apply(
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MoneyCreditedEvent(
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command.accountId,
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command.creditAmount
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)
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)
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}
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@EventSourcingHandler
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fun on(event: MoneyCreditedEvent) {
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balance = balance!!.add(event.creditAmount)
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}
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@CommandHandler
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fun handle(command: DebitMoneyCommand) {
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AggregateLifecycle.apply(
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MoneyDebitedEvent(
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command.accountId,
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command.debitAmount
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)
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)
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}
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@EventSourcingHandler
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@Throws(InsufficientBalanceException::class)
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fun on(event: MoneyDebitedEvent) {
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if (balance!! < event.debitAmount) {
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throw InsufficientBalanceException(event.accountId!!, event.debitAmount!!)
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}
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balance = balance!!.subtract(event.debitAmount)
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}
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}
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data class CreateAccountCommand(
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@TargetAggregateIdentifier
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val accountId: UUID? = null,
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val initialBalance: BigDecimal? = null,
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val owner: String? = null
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)
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@ -0,0 +1,11 @@
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package com.cubetiqs.demo.axon.command
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import org.axonframework.modelling.command.TargetAggregateIdentifier
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import java.math.BigDecimal
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import java.util.UUID
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data class CreditMoneyCommand(
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@TargetAggregateIdentifier
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val accountId: UUID? = null,
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val creditAmount: BigDecimal? = null
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)
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@ -0,0 +1,11 @@
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package com.cubetiqs.demo.axon.command
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import org.axonframework.modelling.command.TargetAggregateIdentifier
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import java.math.BigDecimal
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import java.util.UUID
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data class DebitMoneyCommand(
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@TargetAggregateIdentifier
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val accountId: UUID? = null,
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val debitAmount: BigDecimal? = null
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)
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@ -0,0 +1,11 @@
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package com.cubetiqs.demo.axon.event
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import java.math.BigDecimal
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import java.util.UUID
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data class AccountCreatedEvent(
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var id: UUID? = null,
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var initialBalance: BigDecimal? = null,
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var owner: String? = null
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)
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@ -0,0 +1,9 @@
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package com.cubetiqs.demo.axon.event
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import java.math.BigDecimal
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import java.util.UUID
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data class MoneyCreditedEvent(
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val accountId: UUID? = null,
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val creditAmount: BigDecimal? = null
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)
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package com.cubetiqs.demo.axon.event
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import java.math.BigDecimal
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import java.util.UUID
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data class MoneyDebitedEvent(
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val accountId: UUID? = null,
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val debitAmount: BigDecimal? = null
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)
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@ -0,0 +1,10 @@
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package com.cubetiqs.demo.axon.exception
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import java.math.BigDecimal
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import java.util.UUID
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class InsufficientBalanceException(accountId: UUID, debitAmount: BigDecimal) : Throwable(
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"Insufficient Balance: Cannot debit " + debitAmount +
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" from account number [" + accountId.toString() + "]"
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)
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32
src/main/resources/application-dev.yml
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32
src/main/resources/application-dev.yml
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server:
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port: 8182
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spring:
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datasource:
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driverClassName: org.postgresql.Driver
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url: jdbc:postgresql://${POSTGRES_HOST:192.168.0.202}:${POSTGRES_PORT:5432}/${POSTGRES_DB:axon_demo}
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username: ${POSTGRES_USERNAME:cubetiq}
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password: ${POSTGRES_PASSWORD:Root$}
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hikari:
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max-lifetime: 1800000
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connection-timeout: 30000
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idle-timeout: 600000
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maximum-pool-size: 30
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allow-pool-suspension: true
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tomcat:
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max_active: 10
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max_idle: 5
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min-idle: 2
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initial_size: 5
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remove_abandoned: true
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jpa:
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database-platform: org.hibernate.dialect.PostgreSQLDialect
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show-sql: true
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hibernate:
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ddl-auto: update
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properties:
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hibernate:
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dialect: org.hibernate.dialect.PostgreSQLDialect
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temp:
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use_jdbc_metadata_defaults: false
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open-in-view: true
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server:
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port: 8182
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spring:
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profiles:
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active: dev
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