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Improvement
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Resolution: Done
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Medium
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None
When we fail to lookup a data tree child, we provide very little context, as evidenced here:
Caused by: java.lang.IllegalArgumentException: Data tree child (urn:ietf:params:xml:ns:yang:ietf-restconf)operations not present at org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.lambda$pushData$5(SchemaInferenceStack.java:799) ~[?:?] at java.util.Optional.orElseThrow(Optional.java:408) ~[?:?] at org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.pushData(SchemaInferenceStack.java:798) ~[?:?] at org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.pushFirstData(SchemaInferenceStack.java:807) ~[?:?] at org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.pushData(SchemaInferenceStack.java:787) ~[?:?] at org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.enterDataTree(SchemaInferenceStack.java:473) ~[?:?] at org.opendaylight.yangtools.yang.data.util.NormalizedNodeStreamWriterStack.enterDataTree(NormalizedNodeStreamWriterStack.java:187) ~[?:?] at org.opendaylight.yangtools.yang.data.util.NormalizedNodeStreamWriterStack.startContainerNode(NormalizedNodeStreamWriterStack.java:259) ~[?:?] at org.opendaylight.yangtools.yang.data.codec.gson.JSONNormalizedNodeStreamWriter.startContainerNode(JSONNormalizedNodeStreamWriter.java:305) ~[?:?] at org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter.wasProcessedAsCompositeNode(NormalizedNodeWriter.java:204) ~[?:?] at org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter.write(NormalizedNodeWriter.java:102) ~[?:?] at org.opendaylight.netconf.sal.rest.impl.RestconfDelegatingNormalizedNodeWriter.write(RestconfDelegatingNormalizedNodeWriter.java:38) ~[?:?] at org.opendaylight.netconf.sal.rest.impl.RestconfDelegatingNormalizedNodeWriter.write(RestconfDelegatingNormalizedNodeWriter.java:19) ~[?:?] at org.opendaylight.netconf.sal.rest.impl.NormalizedNodeJsonBodyWriter.writeNormalizedNode(NormalizedNodeJsonBodyWriter.java:149) ~[?:?] at org.opendaylight.netconf.sal.rest.impl.NormalizedNodeJsonBodyWriter.writeTo(NormalizedNodeJsonBodyWriter.java:101) ~[?:?] at org.opendaylight.netconf.sal.rest.impl.NormalizedNodeJsonBodyWriter.writeTo(NormalizedNodeJsonBodyWriter.java:57) ~[?:?]
This makes it hard to discern where in the statement tree the failure occurred. In this particular case, the problem seems obvious, we are doing a 'pushFirstData', hence we are in the wrong initial context.
Improve error logging by including at least current statement, or perhaps a shorthand (like a new Inference.toString() method) to describe the state we are in.
- relates to
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NETCONF-822 Discover RPC operation through RESTCONF is failing with response 500
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- Resolved
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