Lagom debugger Intellij

Question

I can't get the debugger to work. Steps to reproduce:

1) sbt lagom:runAll

2) sbt -jvm-debug 5005

3) Set remote config in Intellij + start debugging

4) Set breakpoints

5) Make request

The debugger doesn't stop at the breakpoints.
What is the problem here?

Answer 1

You need to use the -jvm-debug flag on the sbt runAll command, like this:

sbt -jvm-debug 5005 runAll

The following steps in your list are correct.

When you run sbt runAll and sbt -jvm-debug 5005 as separate commands, you are creating two separate sbt sessions: one that runs your services, and the other is doing nothing but waiting for input at the prompt. When you connect your debugger, it is connecting to the second, idle session, instead of the one that is running your services.