feat: Add spring mutli container support

spring-transaction/src/main/kotlin/org/jetbrains/exposed/spring/SpringTransactionManager.kt

@@ -38,37 +38,59 @@ class SpringTransactionManager(
         databaseConfig = databaseConfig
     ) { this }
 
-    @Volatile override var defaultIsolationLevel: Int = -1
+    @Volatile
+    override var defaultIsolationLevel: Int = -1
         get() {
             if (field == -1) {
                 field = Database.getDefaultIsolationLevel(db)
             }
             return field
         }
 
-    private val springTxKey = "SPRING_TX_KEY"
+    private val transactionStackKey = "SPRING_TRANSACTION_STACK_KEY"
+
+    private fun getTransactionStack(): List<TransactionManager> {
+        return TransactionSynchronizationManager.getResource(transactionStackKey)
+            ?.let { it as List<TransactionManager> }
+            ?: listOf()
+    }
+
+    private fun setTransactionStack(list: List<TransactionManager>) {
+        TransactionSynchronizationManager.unbindResourceIfPossible(transactionStackKey)
+        TransactionSynchronizationManager.bindResource(transactionStackKey, list)
+    }
+
+    private fun pushTransactionStack(transaction: TransactionManager) {
+        val transactionList = getTransactionStack()
+        setTransactionStack(transactionList + transaction)
+    }
+
+    private fun popTransactionStack() = setTransactionStack(getTransactionStack().dropLast(1))
+
+    private fun getLastTransactionStack() = getTransactionStack().lastOrNull()
 
     override fun doBegin(transaction: Any, definition: TransactionDefinition) {
         super.doBegin(transaction, definition)
 
         if (TransactionSynchronizationManager.hasResource(obtainDataSource())) {
-            currentOrNull() ?: initTransaction()
-        }
-        if (!TransactionSynchronizationManager.hasResource(springTxKey)) {
-            TransactionSynchronizationManager.bindResource(springTxKey, transaction)
+            currentOrNull() ?: initTransaction(transaction)
         }
+
+        pushTransactionStack(this@SpringTransactionManager)
     }
 
     override fun doCleanupAfterCompletion(transaction: Any) {
         super.doCleanupAfterCompletion(transaction)
         if (!TransactionSynchronizationManager.hasResource(obtainDataSource())) {
             TransactionSynchronizationManager.unbindResourceIfPossible(this)
-            TransactionSynchronizationManager.unbindResource(springTxKey)
         }
+
+        popTransactionStack()
+        TransactionManager.resetCurrent(getLastTransactionStack())
+
         if (TransactionSynchronizationManager.isSynchronizationActive() && TransactionSynchronizationManager.getSynchronizations().isEmpty()) {
             TransactionSynchronizationManager.clearSynchronization()
         }
-        TransactionManager.resetCurrent(null)
     }
 
     override fun doSuspend(transaction: Any): Any {
@@ -100,21 +122,21 @@ class SpringTransactionManager(
             isolationLevel = isolation
         }
 
-        getTransaction(tDefinition)
-
-        return currentOrNull() ?: initTransaction()
+        val transactionStatus = (getTransaction(tDefinition) as DefaultTransactionStatus)
+        return currentOrNull() ?: initTransaction(transactionStatus.transaction)
     }
 
-    private fun initTransaction(): Transaction {
+    private fun initTransaction(transaction: Any): Transaction {
         val connection = (TransactionSynchronizationManager.getResource(obtainDataSource()) as ConnectionHolder).connection
 
         val transactionImpl = try {
-            SpringTransaction(JdbcConnectionImpl(connection), db, defaultIsolationLevel, defaultReadOnly, currentOrNull())
+            SpringTransaction(JdbcConnectionImpl(connection), db, defaultIsolationLevel, defaultReadOnly, currentOrNull(), transaction)
         } catch (e: Exception) {
             exposedLogger.error("Failed to start transaction. Connection will be closed.", e)
             connection.close()
             throw e
         }
+
         TransactionManager.resetCurrent(this)
         return Transaction(transactionImpl).apply {
             TransactionSynchronizationManager.bindResource(this@SpringTransactionManager, this)
@@ -143,7 +165,8 @@ class SpringTransactionManager(
         override val db: Database,
         override val transactionIsolation: Int,
         override val readOnly: Boolean,
-        override val outerTransaction: Transaction?
+        override val outerTransaction: Transaction?,
+        private val currentTransaction: Any,
     ) : TransactionInterface {
 
         override fun commit() {
@@ -156,9 +179,7 @@ class SpringTransactionManager(
 
         override fun close() {
             if (TransactionSynchronizationManager.isActualTransactionActive()) {
-                TransactionSynchronizationManager.getResource(springTxKey)?.let { springTx ->
-                    [email protected](springTx)
-                }
+                [email protected](currentTransaction)
             }
         }
     }

spring-transaction/src/test/kotlin/org/jetbrains/exposed/spring/SpringMultiContainerTransactionTest.kt

@@ -0,0 +1,226 @@
+package org.jetbrains.exposed.spring
+
+import org.jetbrains.exposed.dao.id.LongIdTable
+import org.jetbrains.exposed.sql.SchemaUtils
+import org.jetbrains.exposed.sql.deleteAll
+import org.jetbrains.exposed.sql.insertAndGetId
+import org.jetbrains.exposed.sql.selectAll
+import org.jetbrains.exposed.sql.transactions.transaction
+import org.junit.Assert
+import org.junit.Test
+import org.springframework.context.annotation.AnnotationConfigApplicationContext
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.jdbc.datasource.embedded.EmbeddedDatabase
+import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder
+import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType
+import org.springframework.transaction.annotation.EnableTransactionManagement
+import org.springframework.transaction.annotation.Transactional
+import javax.sql.DataSource
+import kotlin.test.BeforeTest
+
+/**
+ * @author [email protected]
+ */
+open class SpringMultiContainerTransactionTest {
+
+    val orderContainer = AnnotationConfigApplicationContext(OrderConfig::class.java)
+    val paymentContainer = AnnotationConfigApplicationContext(PaymentConfig::class.java)
+
+    val orders: Orders = orderContainer.getBean(Orders::class.java)
+    val payments: Payments = paymentContainer.getBean(Payments::class.java)
+
+    @BeforeTest
+    open fun beforeTest() {
+        orders.init()
+        payments.init()
+    }
+
+    @Test
+    open fun test1() {
+        Assert.assertEquals(0, orders.findAll().size)
+        Assert.assertEquals(0, payments.findAll().size)
+    }
+
+    @Test
+    open fun test2() {
+        orders.create()
+        Assert.assertEquals(1, orders.findAll().size)
+        payments.create()
+        Assert.assertEquals(1, payments.findAll().size)
+    }
+
+    @Test
+    open fun test3() {
+        orders.transaction {
+            payments.create()
+            orders.create()
+            payments.create()
+        }
+        Assert.assertEquals(1, orders.findAll().size)
+        Assert.assertEquals(2, payments.findAll().size)
+    }
+
+    @Test
+    open fun test4() {
+        kotlin.runCatching {
+            orders.transaction {
+                orders.create()
+                payments.create()
+                throw Error()
+            }
+        }
+        Assert.assertEquals(0, orders.findAll().size)
+        Assert.assertEquals(1, payments.findAll().size)
+    }
+
+    @Test
+    open fun test5() {
+        kotlin.runCatching {
+            orders.transaction {
+                orders.create()
+                payments.databaseTemplate {
+                    payments.create()
+                    throw Error()
+                }
+            }
+        }
+        Assert.assertEquals(0, orders.findAll().size)
+        Assert.assertEquals(0, payments.findAll().size)
+    }
+
+    @Test
+    open fun test6() {
+        Assert.assertEquals(0, orders.findAllWithExposedTrxBlock().size)
+        Assert.assertEquals(0, payments.findAllWithExposedTrxBlock().size)
+    }
+
+    @Test
+    open fun test7() {
+        orders.createWithExposedTrxBlock()
+        Assert.assertEquals(1, orders.findAllWithExposedTrxBlock().size)
+        payments.createWithExposedTrxBlock()
+        Assert.assertEquals(1, payments.findAllWithExposedTrxBlock().size)
+    }
+
+    @Test
+    open fun test8() {
+        orders.transaction {
+            payments.createWithExposedTrxBlock()
+            orders.createWithExposedTrxBlock()
+            payments.createWithExposedTrxBlock()
+        }
+        Assert.assertEquals(1, orders.findAllWithExposedTrxBlock().size)
+        Assert.assertEquals(2, payments.findAllWithExposedTrxBlock().size)
+    }
+
+    @Test
+    open fun test9() {
+        kotlin.runCatching {
+            orders.transaction {
+                orders.createWithExposedTrxBlock()
+                payments.createWithExposedTrxBlock()
+                throw Error()
+            }
+        }
+        Assert.assertEquals(0, orders.findAllWithExposedTrxBlock().size)
+        Assert.assertEquals(1, payments.findAllWithExposedTrxBlock().size)
+    }
+
+    @Test
+    open fun test10() {
+        kotlin.runCatching {
+            orders.transaction {
+                orders.createWithExposedTrxBlock()
+                payments.databaseTemplate {
+                    payments.createWithExposedTrxBlock()
+                    throw Error()
+                }
+            }
+        }
+        Assert.assertEquals(0, orders.findAllWithExposedTrxBlock().size)
+        Assert.assertEquals(0, payments.findAllWithExposedTrxBlock().size)
+    }
+}
+
+@Configuration
+@EnableTransactionManagement(proxyTargetClass = true)
+open class OrderConfig {
+
+    @Bean
+    open fun dataSource(): EmbeddedDatabase = EmbeddedDatabaseBuilder().setName("embeddedTest1").setType(EmbeddedDatabaseType.H2).build()
+
+    @Bean
+    open fun transactionManager(dataSource: DataSource) = SpringTransactionManager(dataSource)
+
+    @Bean
+    open fun orders() = Orders()
+}
+
+@Transactional
+open class Orders {
+
+    open fun findAll() = Order.selectAll().map { it }
+
+    open fun findAllWithExposedTrxBlock() = org.jetbrains.exposed.sql.transactions.transaction { findAll() }
+
+    open fun create() = Order.insertAndGetId {
+        it[buyer] = 123
+    }.value
+
+    open fun createWithExposedTrxBlock() = org.jetbrains.exposed.sql.transactions.transaction { create() }
+
+    open fun init() {
+        SchemaUtils.create(Order)
+        Order.deleteAll()
+    }
+
+    open fun transaction(block: () -> Unit) {
+        block()
+    }
+}
+
+object Order : LongIdTable("orders") {
+    val buyer = long("buyer_id")
+}
+
+@Configuration
+@EnableTransactionManagement(proxyTargetClass = true)
+open class PaymentConfig {
+
+    @Bean
+    open fun dataSource(): EmbeddedDatabase = EmbeddedDatabaseBuilder().setName("embeddedTest2").setType(EmbeddedDatabaseType.H2).build()
+
+    @Bean
+    open fun transactionManager(dataSource: DataSource) = SpringTransactionManager(dataSource)
+
+    @Bean
+    open fun payments() = Payments()
+}
+
+@Transactional
+open class Payments {
+
+    open fun findAll() = Payment.selectAll().map { it }
+
+    open fun findAllWithExposedTrxBlock() = transaction { findAll() }
+
+    open fun create() = Payment.insertAndGetId {
+        it[state] = "state"
+    }.value
+
+    open fun createWithExposedTrxBlock() = transaction { create() }
+
+    open fun init() {
+        SchemaUtils.create(Payment)
+        Payment.deleteAll()
+    }
+
+    open fun databaseTemplate(block: () -> Unit) {
+        block()
+    }
+}
+
+object Payment : LongIdTable("payments") {
+    val state = varchar("state", 50)
+}