Question

我有非常简单的驼峰路由器，它使用SQS和base64解码：

 from("aws-sqs://test-camel-start?amazonSQSClient=#sqsClient&concurrentConsumers=2&maxMessagesPerPoll=1")
            .unmarshal()
            .base64()
            .process(new BaseProcessor())
            .to("aws-sqs://test-camel-success?amazonSQSClient=#sqsClient").end();

我的测试处理器：

 public boolean process(Exchange exchange, AsyncCallback callback) {
    try {
        String header = (String) exchange.getIn().getHeader("CamelAwsSqsMessageId");
        String message = exchange.getIn().getBody(String.class);
        MDC.put("message-id", header);
        Thread.sleep(5 * 1000);
        LOG.info("Async ping");
        LOG.info(message);
    } catch (Throwable e) {
        LOG.error(e.getMessage(), e);
        exchange.setException(e);
    }
    callback.done(false);
    return false;
}

所以我有下一个情况： 1）Camel成功读取来自＆＃34; test-camel-start＆＃34;队列 2）BaseProcessor成功处理消息 3）在重试传递消息到＆＃34; test-camel-success＆＃34;

时失败了

我收到了下一个日志记录：

637435 [Camel（HomeCamelSQS）线程＃2 - aws-sqs：// test-camel-start]错误oacprocessor.DefaultErrorHandler cr.id = 18b85e94-bc2f-44dd-baef-4bcd4fb79e0c - 交付失败（MessageId：在ExchangeId上的ID-DESKTOP-5SBC4FA-1522239559145-0-6：ID-DESKTOP-5SBC4FA-1522239559145-0-5）。交付尝试后用尽：1抓住：com.amazonaws.services.sqs.model.AmazonSQSException：请求必须包含参数MessageBody。（服务：AmazonSQS;状态代码：400;错误代码：MissingParameter;请求ID：85604fc2-0724-5d16-af6b-1cf78a24e8b0）

消息历史记录

RouteId ProcessorId处理器已用完（ms） [route1] [route1] [aws-sqs：// test-camel-start？amazonSQSClient =％23sqsClient＆amp; concurrentConsumers = 2＆amp;] [7591] [route1] [unmarshal1] [unmarshal [org.apache.camel.model.dataformat.Base64DataFormat@237080aa]] [1] [route1] [process1] [Processor @ 0x5007bde9] [7417] [route1] [to1] [aws-sqs：// test-camel-success？amazonSQSClient =＃sqsClient] [172]

堆栈跟踪

com.amazonaws.services.sqs.model.AmazonSQSException：请求必须包含参数MessageBody。（服务：AmazonSQS;状态代码：400;错误代码：MissingParameter;请求ID：85604fc2-0724-5d16-af6b-1cf78a24e8b0）在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.handleErrorResponse（AmazonHttpClient.java:1638）在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.executeOneRequest（AmazonHttpClient.java:1303）在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.executeHelper（AmazonHttpClient.java:1055）在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.doExecute（AmazonHttpClient.java:743）在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.executeWithTimer（AmazonHttpClient.java:717）在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.execute（AmazonHttpClient.java:699）在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.access $ 500（AmazonHttpClient.java:667）在com.amazonaws.http.AmazonHttpClient $ RequestExecutionBuilderImpl.execute（AmazonHttpClient.java:649）在com.amazonaws.http.AmazonHttpClient.execute（AmazonHttpClient.java:513）在com.amazonaws.services.sqs.AmazonSQSClient.doInvoke（AmazonSQSClient.java:2013）在com.amazonaws.services.sqs.AmazonSQSClient.invoke（AmazonSQSClient.java:1989）在com.amazonaws.services.sqs.AmazonSQSClient.executeSendMessage（AmazonSQSClient.java:1594）在com.amazonaws.services.sqs.AmazonSQSClient.sendMessage（AmazonSQSClient.java:1571）在org.apache.camel.component.aws.sqs.SqsProducer.process（SqsProducer.java:62） at org.apache.camel.util.AsyncProcessorConverterHelper $ ProcessorToAsyncProcessorBridge.process（AsyncProcessorConverterHelper.java:61）在org.apache.camel.processor.SendProcessor.process（SendProcessor.java:148）在org.apache.camel.processor.RedeliveryErrorHandler.process（RedeliveryErrorHandler.java:548）在org.apache.camel.processor.CamelInternalProcessor.process（CamelInternalProcessor.java:201）在org.apache.camel.processor.Pipeline.process（Pipeline.java:138）在org.apache.camel.processor.Pipeline.access $ 100（Pipeline.java:43）在org.apache.camel.processor.Pipeline $ 1.done（Pipeline.java:157） at org.apache.camel.processor.CamelInternalProcessor $ InternalCallback.done（CamelInternalProcessor.java:262） at org.apache.camel.processor.RedeliveryErrorHandler $ 2.done（RedeliveryErrorHandler.java:560）在com.home.camel_poligon.BaseProcessor.process（BaseProcessor.java:35）在org.apache.camel.processor.DelegateAsyncProcessor.process（DelegateAsyncProcessor.java:110）在org.apache.camel.processor.RedeliveryErrorHandler.process（RedeliveryErrorHandler.java:548）在org.apache.camel.processor.CamelInternalProcessor.process（CamelInternalProcessor.java:201）在org.apache.camel.processor.Pipeline.process（Pipeline.java:138）在org.apache.camel.processor.Pipeline.process（Pipeline.java:101）在org.apache.camel.processor.CamelInternalProcessor.process（CamelInternalProcessor.java:201）在org.apache.camel.component.aws.sqs.SqsConsumer.processBatch（SqsConsumer.java:206）在org.apache.camel.component.aws.sqs.SqsConsumer.poll（SqsConsumer.java:111）在org.apache.camel.impl.ScheduledPollConsumer.doRun（ScheduledPollConsumer.java:174）在org.apache.camel.impl.ScheduledPollConsumer.run（ScheduledPollConsumer.java:101） at java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:511） at java.util.concurrent.FutureTask.runAndReset（FutureTask.java:308） at java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.access $ 301（ScheduledThreadPoolExecutor.java:180） at java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.run（ScheduledThreadPoolExecutor.java:294）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:617）在java.lang.Thread.run（Thread.java:745）

Log表示＆＃34;请求必须包含参数MessageBody＆＃34;。

而且我不知道为什么这个消息体不存在。

Answer 1

请参阅此常见问题解答：http://camel.apache.org/why-is-my-message-body-empty.html

在处理器中，将邮件正文转换为记录的字符串。由于消息正文是基于流的（例如base64的输出），它会将正文读取到流的末尾，然后消息将看到为空。

您可以启用流缓存，也不要在处理器中执行此手动记录。

Camel SQS unmarshal

消息历史记录

堆栈跟踪

1 个答案: