Sbt / javaAgents / force jar-具有-依赖关系

Question

我想将"org.kohsuke" % "file-leak-detector" % "1.13" java代理添加到我的sbt配置中。

//plugins.sbt
addSbtPlugin("com.lightbend.sbt" % "sbt-javaagent" % "0.1.5")

//build.sbt
enablePlugins(SbtWeb, PlayScala, DebianPlugin, JavaAgent)
javaAgents += "org.kohsuke" % "file-leak-detector" % "1.13"

但这在运行时失败了。

Failed to find Premain-Class manifest attribute in /usr/share/someApp/bin/../file-leak-detector/file-leak-detector-1.13.jar
Error occurred during initialization of VM
agent library failed to init: instrument

我发现需要有依赖项的jar才能以javaAgent的形式运行它，但是如果理论上可以从https://repo1.maven.org/maven2/org/kohsuke/file-leak-detector/1.13/下载它，我不知道如何与sbt-javaagent插件一起使用它。

我也尝试过：

javaAgents += ("org.kohsuke" % "file-leak-detector" % "1.13") from "https://repo1.maven.org/maven2/org/kohsuke/file-leak-detector/1.13/file-leak-detector-1.13-jar-with-dependencies.jar"

但没有运气。任何想法如何强迫sbt-javaagent插件使用file-leak-detector-1.13-jar-with-dependencies.jar而不是file-leak-detector-1.13-jar

Answer 1

我认为您使用from提供显式URL是正确的做法

如果您的项目需要存储库中不存在的依赖项，则可以按以下方式指定其jar的直接URL： libraryDependencies += "slinky“% "slinky”% "2.1“来自"https://slinky2.googlecode.com/svn/artifacts/2.1/slinky.jar”

当我提供这样的显式作用域时，它似乎在我的机器上工作。

javaAgents += JavaAgent(
  "org.kohsuke" % "file-leak-detector-1.13-jar-with-dependencies" % "1.13" % Runtime from "https://repo1.maven.org/maven2/org/kohsuke/file-leak-detector/1.13/file-leak-detector-1.13-jar-with-dependencies.jar",
  arguments = "help"
)

注：% Runtime。我认为它的工作是因为arguments = "help"是受尊重的，sbt run输出。

sbt:sbt-javaagents-leka> run
[info] running (fork) example.Hello
[error] File leak detector arguments (to specify multiple values, separate them by ',':
[error]   help          - show the help screen.
[error]   trace         - log every open/close operation to stderr.
[error]   trace=FILE    - log every open/close operation to the given file.
[error]   error=FILE    - if 'too many open files' error is detected, send the dump here.
[error]                   by default it goes to stderr.
[error]   threshold=N   - instead of waiting until 'too many open files', dump once
[error]                   we have N descriptors open.
[error]   http=PORT     - Run a mini HTTP server that you can access to get stats on demand
[error]                   Specify 0 to choose random available port, -1 to disable, which is default.
[error]   strong        - Don't let GC auto-close leaking file descriptors
[error]   listener=S    - Specify the fully qualified name of ActivityListener class to activate from beginning
[error]   dumpatshutdown- Dump open file handles at shutdown
[error]   excludes=FILE - Ignore files opened directly/indirectly in specific methods.
[error]                   File lists 'some.pkg.ClassName.methodName' patterns.

另外，如果我设置了arguments = "threshold=1"，它就会输出

[info] running (fork) example.Hello
[error] File leak detector installed
[error] 2 descriptors are open
[error] #1 /private/var/folders/y7/33z7gnqn1nl2vwzn26j59xy9rwcgwx/T/sbt_412c7765/target/edca7f33/f7a642d3/scala-library-2.13.1.jar by thread:main on Mon Apr 20 11:51:20 BST 2020
...