How to debug Play application using activator

playframework-2.0typesafe-activator

I know that for the classic Play framework it's play debug ~run. I tried running activator debug ~run but I get the following error:

[error] Not a valid command: debug (similar: idea)
[error] Not a valid project ID: debug
[error] Expected ':' (if selecting a configuration)
[error] Not a valid key: debug (similar: debianSign, node)
[error] debug
[error]      ^

What am I doing wrong?

Best Answer

If you're just doing activator ~run, then you should be able to pass a JVM debug port option with:

./activator -jvm-debug <port> ~run

This may not do the same thing as play-run, but here's the arguments it's adding to the command line:

-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=<port>

From: https://github.com/typesafehub/activator/blob/master/dist/src/templates/activator#L107

I've successfully attached to this process in my IDE.

If you're running in windows, the automatic configuration is a bit different. With the latest activator, you can do the following:

Open %UserProfile%\.activator\activatorconfig.txt (The UserProfile is different depending on your windows install. Mine is C:\Documents and Settings\jsuereth on one installation and C:\Users\jsuereth on another). Past the following in the file: -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=<PUT YOUR PORT HERE>
You can set the JAVA_OPTS property on the command line before starting activator, e.g. set "JAVA_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=<port>"

Hope that helps!

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1) Please check that you have disabled anonymous mode in IIS

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The .sbt.ivy.lock file is used to synchronize access to your local ivy2 repository between several processes so they cannot modify the directory simultaneously. Usually the situation that you described happens when you have an IDE and Activator/sbt terminal running at the same time.

Even though you killed the Idea Process there could be another process spawned which was causing the lock so next time make sure that you kill all Java processes. However, the best solution for this issue is to avoid locking one process with another. So run only one process which uses the ivy2 repository at the same time.

Best Answer

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