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WPIRoboticsProjects / GRIP

Program for rapidly developing computer vision applications
http://wpiroboticsprojects.github.io/GRIP
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ROS publishing operations don't work #836

Open SamCarlberg opened 7 years ago

SamCarlberg commented 7 years ago

Trying to use any ROS operation will fail. Looks like the internal publisher never gets set

@JLLeitschuh

JLLeitschuh commented 7 years ago

I'm not sure if it actually works on a system that doesn't have ROS installed.

tomatac commented 6 years ago

It does not work in ROS Kinetic:

java.util.NoSuchElementException: No value present
    at java.util.Optional.get(Optional.java:135)
    at edu.wpi.grip.core.operations.network.ros.ROSManager$ROSNetworkPublisher.publish(ROSManager.java:127)
    at edu.wpi.grip.core.operations.network.ros.ROSManager$ROSNetworkPublisher.publish(ROSManager.java:89)
    at edu.wpi.grip.core.operations.network.ros.ROSPublishOperation.doPublish(ROSPublishOperation.java:58)
    at edu.wpi.grip.core.operations.network.NetworkPublishOperation.perform(NetworkPublishOperation.java:75)
    at edu.wpi.grip.core.metrics.Timer.time(Timer.java:102)
    at edu.wpi.grip.core.Step.runPerform(Step.java:138)
    at edu.wpi.grip.core.PipelineRunner.runPipeline(PipelineRunner.java:212)
    at edu.wpi.grip.core.PipelineRunner.access$100(PipelineRunner.java:43)
    at edu.wpi.grip.core.PipelineRunner$1.lambda$runOneIteration$1(PipelineRunner.java:91)
    at edu.wpi.grip.core.metrics.Timer.time(Timer.java:102)
    at edu.wpi.grip.core.PipelineRunner$1.runOneIteration(PipelineRunner.java:91)
    at com.google.common.util.concurrent.AbstractScheduledService$ServiceDelegate$Task.run(AbstractScheduledService.java:188)
    at com.google.common.util.concurrent.Callables$4.run(Callables.java:122)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
tomatac commented 6 years ago

Is there a workaround to communicate with ROS?

JLLeitschuh commented 6 years ago

You are probably the first person to actually try to use the ROS stuff inside of GRIP since I've written it. (Pretty cool in my book). Do you think that the version of ROS Java that we are using is out of date?

I'm happy to work with you to get this fixed.