I am attempting to write an event listener using the documentation. I have
successfully compiled a basic jar with Maven with no errors. When I load it
into guacamole, I get "Extension guac-listener.jar could not be loaded:
Listener class cannot be loaded (wrong version of API?)".
My files are simple:
guac-manifest.json:
{
"guacamoleVersion" : "1.5.5",
"name" : "Guacamole Login Listener",
"namespace" : "guac-listener",
"listeners" : [
"org.apache.guacamole.event.LoginListener"
]
}
LoginListener.java:
package org.apache.guacamole.event;
import org.apache.guacamole.GuacamoleException;
import org.apache.guacamole.net.event.listener.Listener;
import java.io.FileWriter;
import java.io.IOException;
public class LoginListener implements Listener {
@Override
public void handleEvent(Object event) throws GuacamoleException {
String path = "/tmp/dummy.txt";
String msg = "handler called!";
try (FileWriter writer = new FileWriter(path, true)) {
writer.write(msg);
}
catch (IOException e) {
System.out.println("Err");
}
}
}
pom.xml dependencies:
<dependencies>
<dependency>
<groupId>org.apache.guacamole</groupId>
<artifactId>guacamole-ext</artifactId>
<version>1.5.5</version>
</dependency>
</dependencies>
My first guess is I am somehow linking the wrong library. The guacamole
webserver is docker latest tag.
Thanks
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