io.seata.spring.kt.support.TransactionDsl.kt Maven / Gradle / Ivy
/**
* Copyright 1999-2019 Seata.io Group.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.seata.spring.kt.support
import io.seata.core.context.RootContext
import io.seata.tm.api.GlobalTransactionContext
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.coroutineScope
import kotlinx.coroutines.withContext
import kotlin.coroutines.coroutineContext
/**
* seata support kotlin coroutine
*
* if you use kotlin coroutine, GlobalTransactional can not help you, so you can use:
*
* suspend fun test() = transactionScope {
* service1.XXX()
* service2.XXX()
* }
*
* @author sustly
*/
suspend fun transactionScope(block: suspend CoroutineScope.() -> T): T {
return if (coroutineContext[TransactionCoroutineContext] != null) {
coroutineScope(block)
} else {
val globalTransactionContext = GlobalTransactionContext.getCurrentOrCreate()
try {
globalTransactionContext.begin()
withContext(TransactionCoroutineContext()) {
block()
}.also {
globalTransactionContext.commit()
RootContext.unbind()
}
} catch (e: Exception) {
globalTransactionContext.rollback()
RootContext.unbind()
throw e
}
}
}
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