Question

我正在尝试将带有“order_id”键的标头和基于有效负载中属性的值添加到我的消息中。然后我将结果发送到日志接收器，我可以在标头处理器之后检查标头。这是流：

stream create --name add-header-to-message-stream 
  --definition 
    ":aptly-named-destination 

    > add-order_id-header: header-enricher          
      --header.enricher.headers='order_id=payload.order.id \\n fizz=\"buzz\"' 

    | log 
      --log.expression=headers"

当我拖尾日志接收器时，我在标题图中看不到“order_id”或“fizz”的键。我能够部署流并通过管道运行数据而没有错误。如何在邮件中添加标题？

Answer 1

这对我来说很好，但只有一个标题......

dataflow:>stream create foo --definition "time --fixedDelay=5 | 
  header-enricher --headers='foo=payload.substring(0, 1)' | 
  log --expression=#root " --deploy

结果

2017-06-21 08:28:38.459 INFO 70268 --- [-enricher.foo-1] log-sink：GenericMessage [payload = 06/21/17 08:28:38，headers = {amqp_receivedDeliveryMode = PERSISTENT，amqp_receivedRoutingKey = foo.header-enricher，amqp_receivedExchange = foo.header-enricher，amqp_deliveryTag = 1， foo = 0 ，amqp_consumerQueue = foo.header-enricher.foo，amqp_redelivered = false，id = 302f1d5b -ba90

我被告知这个...

--headers='foo=payload.substring(0, 1) \n bar=payload.substring(1,2)'

......或者......

--headers='foo=payload.substring(0, 1) \u000a bar=payload.substring(1,2)'

应该可以工作，但我得到一个解析错误......

Cannot find terminating ' for string time --fixedDelay=5 | header-enricher --headers='foo=payload.substring(0, 1) 
 bar=payload.substring(1,2)' | log --expression=#root

...我正在联系shell / deployer开发者，如果我有，我会提供更新。

我测试了一个文字值（单头）...

dataflow:>stream create foo --definition "time --fixedDelay=5 | 
header-enricher --headers='foo=\"bar\"' | 
log --expression=#root " --deploy

2017-06-21 08:38:17.684 INFO 70916 --- [-enricher.foo-1] log-sink：GenericMessage [payload = 06/21/17 08:38:17，headers = {amqp_receivedDeliveryMode = PERSISTENT，amqp_receivedRoutingKey = foo.header-enricher，amqp_receivedExchange = foo.header-enricher，amqp_deliveryTag = 8， foo = bar ，amqp_consumerQueue = foo.header-enricher.foo，amqp_redelivered = false，id = a92f4908 -af13-53aa-205d-e25e204d04a3，amqp_consumerTag = amq.ctag-X51lhhRWBbEDVSyzp3rGmg，contentType = text / plain，timestamp = 1498048697684}]

如何使用标题丰富的Spring Cloud Stream App Starter为邮件添加标题？

1 个答案: