dominikriemer commented on issue #3632:
URL: https://github.com/apache/streampipes/issues/3632#issuecomment-2932498003
Thanks for your detailed description!
There were indeed some changes we did in addition to the NamingStrategy that
were meant to extend the set of supported OPC-UA types (ExtensionObjects and
some other Basic Data Types). But it seems something is broken/unsupported here.
Since it's hard for me to reproduce, let's find a solution together ;-)
Currently we do the following:
For each selected node, we check if the type is a
``BaseDataVariableTypeNode``.
```java
if (node instanceof BaseDataVariableTypeNode) {
var nodeInfo = new BasicVariableNodeInfo((BaseDataVariableTypeNode)
node, spOpcConfig.getNamingStrategy());
return OpcUaNodeFactory.createOpcUaNode(nodeInfo,
runtimeNamesToDelete);
}
throw new UaException(StatusCode.BAD, "Node is not of type
BaseDataVariableTypeNode");
}
```
The exception thrown here looks similar to your first error message so I
think the node has a type that can not be assigned to BaseDatavariableTypeNode.
Do you have any insights which unsupported data type the node might have?
If this part of the code succeeds, we check if the variable is a built-in
type or a extension object. For an extension object, we try to decode the value
so that it is properly parsed to a StreamPipes event.
This is done by this snippet:
```java
private Struct extractStruct(OpcUaClient client,
Variant variant) {
if (variant.getValue() instanceof ExtensionObject extensionObject) {
var decoded =
extensionObject.decode(client.getDynamicSerializationContext());
if (decoded instanceof Struct struct) {
return struct;
}
}
throw new SpRuntimeException("Decoded value is not a Struct");
}
```
It seems that the extension object cannot be properly decoded in your case.
What do you think - should we add some more info to the Node Details section
and logging to understand what these unsupported data types are?
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