Regex Fluentd从Docker捕获堆栈跟踪

我试图让Fluentd解析来自Docker日志驱动程序的Java堆栈跟踪，使用in_tail并将它们作为单个消息发出

为了我的生活，我不明白为什么他们还在分开

这是一个正在写入文件的示例输入：

2015-12-17T19:19:47+00:00   docker.java.ubuntu:15.10    {"log":"Exception in thread main java.lang.NullPointerException\r","container_id":"5a064eb23465350a11fe00b1f7787f5bd3e9f0182dd44c09516a72ab4006bd54","container_name":"/src-test_1.0.0.353_989549167.1","source":"stdout"}
2015-12-17T19:19:47+00:00   docker.java.ubuntu:15.10    {"container_id":"5a064eb23465350a11fe00b1f7787f5bd3e9f0182dd44c09516a72ab4006bd54","container_name":"/src-test_1.0.0.353_989549167.1","source":"stdout","log":"        at com.example.myproject.Book.getTitle(Book.java:16)\r"}
2015-12-17T19:19:47+00:00   docker.java.ubuntu:15.10    {"container_name":"/src-test_1.0.0.353_989549167.1","source":"stdout","log":"        at com.example.myproject.Author.getBookTitles(Author.java:25)\r","container_id":"5a064eb23465350a11fe00b1f7787f5bd3e9f0182dd44c09516a72ab4006bd54"}
2015-12-17T19:19:47+00:00   docker.java.ubuntu:15.10    {"container_id":"5a064eb23465350a11fe00b1f7787f5bd3e9f0182dd44c09516a72ab4006bd54","container_name":"/src-test_1.0.0.353_989549167.1","source":"stdout","log":"        at com.example.myproject.Bootstrap.main(Bootstrap.java:14)\r"}
2015-12-17T19:19:47+00:00   docker.java.ubuntu:15.10    {"container_id":"5a064eb23465350a11fe00b1f7787f5bd3e9f0182dd44c09516a72ab4006bd54","container_name":"/src-test_1.0.0.353_989549167.1","source":"stdout","log":"test\r"}

这是我用于in_tail的配置：

<source>
  @type tail
  tag docker.multiline
  path /tmp/fluent/java*
  pos_file /tmp/fluent/log.pos
  refresh_interval 10
  format multiline
  format first_line /.*\"log\":\"[^\s].*/
  format /\"log\":\"(?<message>.+)\\r/
</source>

@型尾
标记docker.multiline
path/tmp/fluent/java*
pos_文件/tmp/fluent/log.pos
刷新间隔10
格式化多行
格式化第一行/*\“日志\：\”[^\s]*/
格式/\“日志\”：\“（？。+）\\r/

正则表达式在我看来是正确的，当我将它们插入正则表达式测试器时，第一行正则表达式只匹配样本的第一行和最后一行，而格式正则表达式匹配每一行，但只捕获堆栈跟踪信息，正如我所期望的那样。然而，它们都作为单独的消息出现，几乎就像第一行匹配每一行，而不是第一行和最后一行。

根据，配置键应该是

format\u firstline

和

format

（而不是

format first\u line

和

format

）