Omnetpp federate error in Tiergarten example scenario

[abdullah-traboulsi]

As I am trying to connect Mosaic with Omnetpp, I tried testing Tiergarten example with Omnetpp federate set for true in "scenario_config.json".

Please keep in mind that I am using the eclipse-mosaic version from this website
https://www.dcaiti.tu-berlin.de/research/simulation/download/

But I receive the following error in Mosaic.log

2021-01-22 11:32:02,295 INFO  ROOT - Running Eclipse MOSAIC 20.0 on Java JRE v11.0.9.1 (Ubuntu)
2021-01-22 11:32:02,387 ERROR MosaicStarter - Stopping simulation due to a critical error.
java.lang.reflect.InvocationTargetException: null
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
	at org.eclipse.mosaic.starter.MosaicSimulation.loadFederate(MosaicSimulation.java:337)
	at org.eclipse.mosaic.starter.MosaicSimulation.loadFederates(MosaicSimulation.java:303)
	at org.eclipse.mosaic.starter.MosaicSimulation.runSimulation(MosaicSimulation.java:179)
	at org.eclipse.mosaic.starter.MosaicStarter.execute(MosaicStarter.java:135)
	at org.eclipse.mosaic.starter.MosaicStarter.main(MosaicStarter.java:77)
Caused by: com.google.gson.JsonSyntaxException: duplicate key: null
	at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:190)
	at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:145)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:131)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:222)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:131)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:222)
	at com.google.gson.Gson.fromJson(Gson.java:932)
	at org.eclipse.mosaic.lib.util.objects.ObjectInstantiation.read(ObjectInstantiation.java:155)
	at org.eclipse.mosaic.lib.util.objects.ObjectInstantiation.readFile(ObjectInstantiation.java:104)
	at org.eclipse.mosaic.lib.util.objects.ObjectInstantiation.readFile(ObjectInstantiation.java:86)
	at org.eclipse.mosaic.lib.coupling.AbstractNetworkAmbassador.<init>(AbstractNetworkAmbassador.java:148)
	at org.eclipse.mosaic.fed.omnetpp.ambassador.OmnetppAmbassador.<init>(OmnetppAmbassador.java:40)
	... 9 common frames omitted

[kschrab]

Hi,

this is a known issue with the 20.0 release. You can fix this easily by replacing the omnetpp_config.json with this content:

{
    "federateConfigurationFile": "omnetpp.ini",
    "messages": {
        "destinationType": {
            "AD_HOC_GEOCAST": false,
            "AD_HOC_TOPOCAST": true,
            "CELL_GEOCAST": false,
            "CELL_GEOCAST_MBMS": false,
            "CELL_TOPOCAST": false
        },
        "destinationAddress": {
            "ipv4UnicastAddress": false,
            "ipv4BroadcastAddress": true,
            "ipv4AnycastAddress" : false
        },
        "protocolType": {
            "UDP": true,
            "TCP": false
        }
    }
}

[abdullah-traboulsi]

thank you, but my omnetpp_config.json was already like the content you posted.

Now I have got another error, it seems like I have got error in installing Omnetpp federate

2021-01-26 14:03:09,743 INFO ROOT - Running Eclipse MOSAIC 20.0 on Java JRE v11.0.9.1 (Ubuntu)
2021-01-26 14:03:09,909 INFO FederationManagement - Start federation with id 'Tiergarten'
2021-01-26 14:03:09,909 INFO FederationManagement - Add ambassador/federate with id 'application'
2021-01-26 14:03:09,910 INFO FederationManagement - Add ambassador/federate with id 'environment'
2021-01-26 14:03:09,910 INFO FederationManagement - Add ambassador/federate with id 'mapping'
2021-01-26 14:03:09,910 INFO FederationManagement - Add ambassador/federate with id 'omnetpp'
2021-01-26 14:03:09,910 INFO FederationManagement - Deploying federate 'omnetpp' locally in ./tmp/omnetpp
2021-01-26 14:03:33,521 INFO FederationManagement - Starting federate 'omnetpp' locally in ./tmp/omnetpp

---

Stopping simulation due to a critical error:
- FederateExecutor.FederateStarterException: java.io.IOException: Cannot run program "omnetpp-federate/omnetpp-federate" (in directory "./tmp/omnetpp"): error=2, No such file or directory
- Root Cause: IOException: error=2, No such file or directory
Please see the log files for details.
- Log-Directory: logs/log-20210126-140309-Tiergarten

Eclipse MOSAIC will now shutdown.