Comments (1)
You are using the wrong tool. Nailgun works when you want to run the same java process (including libraries/classes/packages) many times over with different parameters without incurring JVM startup overhead. By its nature, it is keeping one set of libraries/classes/packages the entire time the server is running. I suspect that when you tried to run the second instance of nailgun with a different classpath, it crashed behind the scenes because the port wasn't available. Unless you kill the server with the old classpath and start a new one with the new classpath, asking for the same alias/class each time will keep giving you the first one you loaded.
java ... -cp /path/to/nailgun-server.jar:/path/to/1/ com.facebook.nailgun.NGServer
That's starting your NGServer.
ng HelloWorld
That invokes the "HelloWorld" class from the nailgun server and you get "Hello, world! 1"
java ... -cp /path/to/nailgun-server.jar:/path/to/2/ com.facebook.nailgun.NGServer
That fails to start because there's already a nailgun server running with your default settings and it can't have the TCP port.
ng HelloWorld
That invokes the "HelloWorld" class from the already running nailgun server and you get "Hello, world! 1"
I think that if you were to write a class that uses ClassLoader to pull in each student's code, run the test against it, and output results, you could load that into nailgun and then only have to automate the process of invoking that against each student's class.
java ... -cp /path/to/nailgun-server.jar:/path/to/MyClassLoaderAndTestSuite.jar com.facebook.nailgun.NGServer
ng MyClassLoaderAndTestSuite Student1/HelloWorld.class
ng MyClassLoaderAndTestSuite Student2/HelloWorld.class
...
ng MyClassLoaderAndTestSuite StudentN/HelloWorld.class
I cannot make any recommendations on how to do so, as I am not a Java programmer.
from nailgun.
Related Issues (20)
- How to properly terminate the nail? HOT 2
- Overhead of SecurityManager HOT 17
- Publish nailgun to maven central HOT 2
- ng.py crashes in a cygwin environment when trying to reference Kernel32 dll
- Problem with nested connections to a unix domain socket HOT 2
- Publish 0.9.3 artifacts to a public repository HOT 2
- Nailgun server crashes HOT 8
- NGServer or ng client changes path delimiters on output HOT 2
- Documentation is lacking HOT 2
- Running `mvn package` fails with JavaDoc errors HOT 1
- Support Java versions greater than 8?
- JDK 11/12 Support HOT 2
- Remove / tone down the scary 'NOT MAINTAINED' header
- Server's sockets are not shut down in an orderly fashion; sending heartbeats can occasionally fail HOT 1
- Release? HOT 1
- Unused value
- Make error HOT 1
- still mantained? HOT 2
- Mirroring policy breaks repositories HOT 2
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from nailgun.