我有一个Order，它有两种类型的待办事项。 有一张表格，其中插入新的待办事项条目。 骆驼路线读取待办事项并对其进行处理，并在jpa（hibernate）的帮助下将处理结果存储在数据库中，待办事项也被删除。
这看起来总体上是可行的，除了自上个月以来仅发生过一次的情况之外，当jpa将处理结果存储到数据库中时，花了10多分钟才得到事务回滚异常。 问题是日志无法告诉您jpa哪里出了问题以及需要修复什么？
使用的工具：Apache karaf，Camel，Hibernate（Jpa），Mariadb
-- Camel route in blueprint file
<route id="order-todo-type1-processing" autoStartup="{{order-dispatcher}}">
<from uri="sql:SELECT tdt.order_id FROM order_todo_task tdt where tdt.type='TYPE-1'?dataSource=OrderData&consumer.delay=30000" />
<to uri="bean:processorOrderTodoType1?method=process" />
</route>
<route id="order-todo-type2-processing" autoStartup="{{order-dispatcher}}">
<from uri="sql:SELECT tdt.order_id FROM order_todo_task tdt where tdt.type='TYPE-2'?dataSource=OrderData&consumer.delay=30000" />
<to uri="bean:processorOrderTodoType2?method=process" />
</route>
-- Domain entities
@Entity
@Table(name = "order")
Class Order {
@Id
@Column(name = "id", unique = true, nullable = false)
private Long id;
@OneToMany(mappedBy = "order_id", cascade = CascadeType.ALL, fetch = FetchType.EAGER, orphanRemoval = true)
private Set<TodoTask> tasks;
@OneToMany(mappedBy = "order_id", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
private Set<TodoProcessingLogs> todoProcessingLogs;
}
-- class for processing of todo type-1
class ProcessorOrderTodoType1 {
OrderService service;//inject as osgi service and use jpa entity manager
public void process(Map<String, Object> data) {
String orderId = data.get("order_id").toString();
Order order = em.find(Order.class, orderId);
//do business processing step - 1
order.getTodoProcessingLogs.add(new TodoProcessingLogs(....));
service.merge(order);//save partial processing status
//do business processing step - 2
order.removeSpecifiedTodoType("TYPE-1");
...
service.merge(order);
}
}
-- Error logs
| ERROR | _fk%20=%20tft.id | DefaultErrorHandler | 78 - org.apache.camel.camel-core - 2.18.0 | Failed delivery for (MessageId: ID-d8f4bff62acc-41735-1531810001157-0-15905 on ExchangeId: ID-d8f4bff62acc-41735-1531810001157-0-15906). Exhausted after delivery attempt: 1 caught: javax.transaction.RollbackException
Message History
---------------------------------------------------------------------------------------------------------------------------------------
RouteId ProcessorId Processor Elapsed (ms)
[order-todo-type1-processing ] [order-todo-type1-processing ] [sql://SELECT tdt.order_id FROM order_todo_task tdt where tdt.type='TYPE-1'] [ 804724]
[order-todo-type1-processing ] [to1 ] [bean:processorOrderTodoType1?method=process ] [ 804722]
Stacktrace
---------------------------------------------------------------------------------------------------------------------------------------
javax.transaction.RollbackException
at org.apache.aries.transaction.TxInterceptorImpl.postCallWithReturn(TxInterceptorImpl.java:109)
at org.apache.aries.blueprint.proxy.Collaborator.postInvoke(Collaborator.java:98)
at Proxy8af2e5ee_c7cb_4f0f_b75b_dacb4d121b4f.merge(Unknown Source)
at Proxy22cba4f1_c863_4172_bb5c_72387fe65471.merge(Unknown Source)
at com.mycompany.ProcessorOrderTodoType1.save(ProcessorOrderTodoType1.java:39)
at Proxy7bce399e_051e_45f0_a58a_2bbec26edb59.save(Unknown Source)
at com.mycompany.ProcessorOrderTodoType1.process(ProcessorOrderTodoType1.java:5)[11:com.mycompany.order-application:1.0.6]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.8.0_162]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)[:1.8.0_162]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.8.0_162]
at java.lang.reflect.Method.invoke(Method.java:498)[:1.8.0_162]
at org.apache.camel.component.bean.MethodInfo.invoke(MethodInfo.java:435)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.component.bean.MethodInfo$1.doProceed(MethodInfo.java:286)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.component.bean.MethodInfo$1.proceed(MethodInfo.java:259)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:178)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.component.bean.BeanProducer.process(BeanProducer.java:41)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:145)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:542)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:197)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.processor.Pipeline.process(Pipeline.java:120)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.processor.Pipeline.process(Pipeline.java:83)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:197)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:97)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.component.sql.SqlConsumer.processBatch(SqlConsumer.java:233)[80:org.apache.camel.camel-sql:2.18.0]
at org.apache.camel.component.sql.SqlConsumer$1.doInPreparedStatement(SqlConsumer.java:153)[80:org.apache.camel.camel-sql:2.18.0]
at org.apache.camel.component.sql.SqlConsumer$1.doInPreparedStatement(SqlConsumer.java:112)[80:org.apache.camel.camel-sql:2.18.0]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:633)[165:org.apache.servicemix.bundles.spring-jdbc:4.3.5.RELEASE_1]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:662)[165:org.apache.servicemix.bundles.spring-jdbc:4.3.5.RELEASE_1]
at org.apache.camel.component.sql.SqlConsumer.poll(SqlConsumer.java:168)[80:org.apache.camel.camel-sql:2.18.0]
at org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:175)[78:org.apache.camel.camel-core:2.18.0]
at org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:102)[78:org.apache.camel.camel-core:2.18.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[:1.8.0_162]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)[:1.8.0_162]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)[:1.8.0_162]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)[:1.8.0_162]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)[:1.8.0_162]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)[:1.8.0_162]
at java.lang.Thread.run(Thread.java:748)[:1.8.0_162]