Thanks for the quick response! The only output I get is:
guacamole_guacamole | 22:39:55.184 [http-nio-8080-exec-9] INFO org.apache.guacamole.event.Notifier - failed authentication for user null guacamole_guacamole | 22:39:55.186 [http-nio-8080-exec-9] ERROR o.a.g.rest.RESTExceptionMapper - Unexpected internal error: 'org.apache.guacamole.net.auth.AuthenticationProvider org.apache.guacamole.net.event.AuthenticationFailureEvent.getAuthenticationProvider()' As for the pom.xml, the only thing I changed was the name of the artifactId produced to `guacamole-notifier`. -Nathaniel > On Mar 9, 2024, at 6:27 PM, Nick Couchman <vn...@apache.org> wrote: > > On Sat, Mar 9, 2024 at 6:08 PM Nathaniel Belles <mon99keymon99...@gmail.com > <mailto:mon99keymon99...@gmail.com>> wrote: > Hello, > > I’m currently trying to write a simple extension for guacamole that allows > for push notifications through web hooks. The extension of course relies a > lot on guacamole's event listeners. The documentation shows a very simple > example (TutorialListener.java) of these event listeners which I have added > to the `guacamole-client/extensions/` folder, compiled and then added the > extension jar to the extensions folder of my guacamole instance. This example > runs just fine and produces debugging output as expected. But when I try to > extend the functionality, even just to store a copy of the > `AuthenticationProvider` object from the event after including the `import > org.apache.guacamole.net.auth.AuthenticationProvider;` line at the top of the > file, I am able to compile the extension but then at runtime I get the > following: `Unexpected internal error: > 'org.apache.guacamole.net.auth.AuthenticationProvider > org.apache.guacamole.net.event.AuthenticationFailureEvent.getAuthenticationProvider()'`. > > > > Could you share the full output of the runtime error or Java stack trace? > > I started looking through the code and I have found that there is a > `.getAuthenticationProvider()` function in the > `AuthenticationFailureEvent.java` file so I know that I’m using the write > function. I also found similar instances of the `AuthenticationFailureEvent` > being used in the `EventLoggingListener.java` file and tried to replicate the > imports and logic used for the guacamole-client. Do I need to do something > special to get proper access to the object types? > > > Aside from the import, are you including the required dependencies, and the > correct version(s) of them, in your pom.xml file? > > -Nick
