| [basyx-dev] Query on invoking Operation with REST API |
Dear Basyx Developers Community,
I am Nayabrasul Shaik, working for Service Robotics Research
Center at the Ulm University of Applied Sciences, Germany.
Our group is currently working on providing AAS interface to the
Service Robots. We choose Basyx implementation for this purpose
and appreciate your effort.
I have a query on invoking the operation using the REST interface.
I am using the Cloud
Edge Deployment example for this purpose.
I added an Operation(which takes a string as input and returns a
string) to Submodel and tried to invoke it using Postman rest
client.
The response from REST api is unsuccessful and I see the following
error in Basyx.
Error from Basyx:
-------------------------
15:56:39.870 [http-nio-8082-exec-5] ERROR
org.eclipse.basyx.vab.coder.json.provider.JSONProvider - Unknown
Exception in JSONProvider
org.eclipse.basyx.aas.metamodel.exception.MetamodelConstructionException:
Could not construct meta model element
org.eclipse.basyx.submodel.metamodel.map.submodelelement.operation.OperationVariable.
Passed argument was {modelType={name=OperationVariable},
value={valueId=null, kind=Template, valueType=string,
modelType={name=Property}, value=foutput}}
at
org.eclipse.basyx.submodel.metamodel.map.submodelelement.operation.OperationVariable.createAsFacade(OperationVariable.java:69)
Below snippet shows the operation added to submodel:
-----------------------------------------------------------------------------
complex.setIdShort("complex");
Property inProp1 = new Property("finput");
inProp1.setModelingKind(ModelingKind.TEMPLATE);
inProp1.setValueType(ValueType.String);
Property outProp = new Property("foutput");
outProp.setModelingKind(ModelingKind.TEMPLATE);
outProp.setValueType(ValueType.String);
complex.setInputVariables(Arrays.asList(new
OperationVariable(inProp1)));
complex.setOutputVariables(Collections.singleton(new
OperationVariable(outProp)));
edgeSm.addSubmodelElement(complex);
Following is the REST API used and JSON input used for invoking
the operation:
-------------------------------------------------------------------------------------------------------------
POST http://localhost:8082/oven/curr_temp/submodel/submodelElements/complex/invoke
{
"requestId" : "1",
"inputArguments": [
{
"value": {
"idShort": "finput",
"category": "string",
"kind": "Template",
"value": "MyInput",
"mimeType": "string"
}
}
],
"timeout" : 5000
}
I appreciate any cues in getting the successful response for REST
API invocation of operation.
Thanks in advance.
--
Mit freundlichen Grüßen / Kind regards
Nayabrasul Shaik
Research associate
Service Robotics Research Center
University of Applied Sciences Ulm
Prittwitzstrasse 10
89075 Ulm
Germany
Telefon: +49 (0731) 50-28148
E-Mail: nayabrasul.shaik@xxxxxx