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GH-753: Close transactional producer on error
Fixes #753 Improve exception handling for producer transaction commit / rollback * Close the producer if an exception is thrown while committing / rollbacking a transaction when synchronizing the Kafka transaction with another TransactionManager. * Don't reuse transactional producers if an exception is thrown when committing / rollbacking a transaction. Some of the exceptions are fatal and mean the producer cannot be reused. * Close the transactional producer if an exception occurs when calling beginTransaction when not using DefaultKafkaProducerFactory.
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105 changes: 105 additions & 0 deletions
105
...st/java/org/springframework/kafka/support/transaction/ResourcelessTransactionManager.java
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/* | ||
* Copyright 2017-2018 the original author or authors. | ||
* | ||
* 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. | ||
*/ | ||
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package org.springframework.kafka.support.transaction; | ||
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import java.util.ArrayList; | ||
import java.util.List; | ||
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import org.springframework.transaction.TransactionDefinition; | ||
import org.springframework.transaction.TransactionException; | ||
import org.springframework.transaction.support.AbstractPlatformTransactionManager; | ||
import org.springframework.transaction.support.DefaultTransactionStatus; | ||
import org.springframework.transaction.support.TransactionSynchronizationManager; | ||
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@SuppressWarnings("serial") | ||
public class ResourcelessTransactionManager extends AbstractPlatformTransactionManager { | ||
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@Override | ||
protected void doBegin(Object transaction, TransactionDefinition definition) throws TransactionException { | ||
((ResourcelessTransaction) transaction).begin(); | ||
} | ||
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@Override | ||
protected void doCommit(DefaultTransactionStatus status) throws TransactionException { | ||
if (logger.isDebugEnabled()) { | ||
logger.debug("Committing resourceless transaction on [" + status.getTransaction() + "]"); | ||
} | ||
} | ||
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@Override | ||
protected Object doGetTransaction() throws TransactionException { | ||
Object transaction = new ResourcelessTransaction(); | ||
List<Object> resources; | ||
if (!TransactionSynchronizationManager.hasResource(this)) { | ||
resources = new ArrayList<>(); | ||
TransactionSynchronizationManager.bindResource(this, resources); | ||
} | ||
else { | ||
@SuppressWarnings("unchecked") | ||
List<Object> stack = (List<Object>) TransactionSynchronizationManager.getResource(this); | ||
resources = stack; | ||
} | ||
resources.add(transaction); | ||
return transaction; | ||
} | ||
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@Override | ||
protected void doRollback(DefaultTransactionStatus status) throws TransactionException { | ||
if (logger.isDebugEnabled()) { | ||
logger.debug("Rolling back resourceless transaction on [" + status.getTransaction() + "]"); | ||
} | ||
} | ||
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@Override | ||
protected boolean isExistingTransaction(Object transaction) throws TransactionException { | ||
if (TransactionSynchronizationManager.hasResource(this)) { | ||
List<?> stack = (List<?>) TransactionSynchronizationManager.getResource(this); | ||
return stack.size() > 1; | ||
} | ||
return ((ResourcelessTransaction) transaction).isActive(); | ||
} | ||
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@Override | ||
protected void doSetRollbackOnly(DefaultTransactionStatus status) throws TransactionException { | ||
} | ||
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@Override | ||
protected void doCleanupAfterCompletion(Object transaction) { | ||
List<?> resources = (List<?>) TransactionSynchronizationManager.getResource(this); | ||
resources.clear(); | ||
TransactionSynchronizationManager.unbindResource(this); | ||
((ResourcelessTransaction) transaction).clear(); | ||
} | ||
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private static class ResourcelessTransaction { | ||
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private boolean active = false; | ||
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public boolean isActive() { | ||
return active; | ||
} | ||
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public void begin() { | ||
active = true; | ||
} | ||
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public void clear() { | ||
active = false; | ||
} | ||
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} | ||
} |