Jenkins + Play 1.2.4 ： cobertura lock files /report 的问题
2022-08-31 15:57:44
我们有一个Play 1.2.4应用程序，我们为该应用程序提供了Jenkins（在Ubuntu上）。我们在Cobertura遇到了问题。
运行测试（成功）后，时不时地，我们会收到以下错误：
---------------------------------------
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.sourceforge.cobertura.util.FileLocker.lock(FileLocker.java:124)
at play.modules.cobertura.CoberturaPlugin$CoberturaPluginShutdownThread.run(Unknown Source)
Caused by: java.nio.channels.OverlappingFileLockException
at sun.nio.ch.FileChannelImpl$SharedFileLockTable.checkList(FileChannelImpl.java:1166)
at sun.nio.ch.FileChannelImpl$SharedFileLockTable.add(FileChannelImpl.java:1068)
at sun.nio.ch.FileChannelImpl.lock(FileChannelImpl.java:824)
at java.nio.channels.FileChannel.lock(FileChannel.java:860)
... 6 more
---------------------------------------
Unable to get lock on /var/lib/jenkins/jobs/project/workspace/cobertura.ser.lock: null
This is known to happen on Linux kernel 2.6.20.
Make sure cobertura.jar is in the root classpath of the jvm
process running the instrumented code. If the instrumented code
is running in a web server, this means cobertura.jar should be in
the web server's lib directory.
Don't put multiple copies of cobertura.jar in different WEB-INF/lib directories.
Only one classloader should load cobertura. It should be the root classloader.
---------------------------------------
lock file could not be deleted
这似乎不会“破坏构建”，但进一步构建，我们得到以下内容（这会导致cobertura报告失败）
Publishing Cobertura coverage report...
No coverage results were found using the pattern 'test-result/code-coverage/coverage.xml' relative to '/var/lib/jenkins/jobs/project/workspace'. Did you enter a pattern relative to the correct directory? Did you generate the XML report(s) for Cobertura?
Build step 'Publish Cobertura Coverage Report' changed build result to FAILURE
手动运行后续生成通常会通过。
根据cobertura 1.9.2的零代码覆盖率，但测试正在工作，我尝试在播放auto-test-command后设置-Dcobertura.use.java.nio=false。
由于此错误只是不时发生，因此我不完全确定这是否有帮助。但在那之后，我们遇到了播放自动测试挂起的问题：
...
Executing /opt/play-1.2.4/play auto-test "/var/lib/jenkins/jobs/project/workspace" -Dcobertura.use.java.nio=false
[workspace] $ /opt/play-1.2.4/play auto-test "/var/lib/jenkins/jobs/project/workspace" -Dcobertura.use.java.nio=false
<build stuck here for a couple of days>
由于没有什么是完全确定性的，所以在这里说因果关系有点困难。（这似乎发生在 jenkins/服务器重新启动后的一两次构建之后）
目前，我正在考虑在我们的项目中禁用Cobertura，但如果有人有其他想法，那就太好了=）
