If you do a PUT to a top-level node, an exception is thrown:
aylight.controller.sal-rest-connector - 1.2.0.SNAPSHOT | | Error parsing json input
java.util.NoSuchElementException
at com.google.common.collect.AbstractIndexedListIterator.next(AbstractIndexedListIterator.java:82)[114:com.google.guava:18.0.0]
at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.findNodeInSchemaContext(SchemaContextUtil.java:229)[141:org.opendaylight.yangtools.yang-model-util:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.findDataSchemaNode(SchemaContextUtil.java:87)[141:org.opendaylight.yangtools.yang-model-util:0.7.0.SNAPSHOT]
at org.opendaylight.controller.sal.rest.impl.JsonNormalizedNodeBodyReader.readFrom(JsonNormalizedNodeBodyReader.java:64)[256:org.opendaylight.controller.sal-rest-connector:1.2.0.SNAPSHOT]
at org.opendaylight.controller.sal.rest.impl.JsonNormalizedNodeBodyReader.readFrom(JsonNormalizedNodeBodyReader.java:41)[256:org.opendaylight.controller.sal-rest-connector:1.2.0.SNAPSHOT]
This is easily reproducible with the toaster, eg:
http://localhost:8181/restconf/config/toaster:toaster
{
toaster:
}
Also the CDS 3-node integration tests that use the car/people models are broken as well.
Also doing POST to http://localhost:8181/restconf/config/, gets a different exception:
java.lang.NullPointerException
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:210)[114:com.google.guava:18.0.0]
at com.google.common.base.Splitter.split(Splitter.java:386)[114:com.google.guava:18.0.0]
at org.opendaylight.controller.sal.restconf.impl.ControllerContext.toIdentifier(ControllerContext.java:138)[256:org.opendaylight.controller.sal-rest-connector:1.2.0.SNAPSHOT]
at org.opendaylight.controller.sal.restconf.impl.ControllerContext.toInstanceIdentifier(ControllerContext.java:124)[256:org.opendaylight.controller.sal-rest-connector:1.2.0.SNAPSHOT]
at org.opendaylight.controller.sal.rest.impl.AbstractIdentifierAwareJaxRsProvider.getInstanceIdentifierContext(AbstractIdentifierAwareJaxRsProvider.java:24)[256:org.opendaylight.controller.sal-rest-connector:1.2.0.SNAPSHOT]
at org.opendaylight.controller.sal.rest.impl.AbstractIdentifierAwareJaxRsProvider.getIdentifierWithSchema(AbstractIdentifierAwareJaxRsProvider.java:20)[256:org.opendaylight.controller.sal-rest-connector:1.2.0.SNAPSHOT]
at org.opendaylight.controller.sal.rest.impl.JsonNormalizedNodeBodyReader.readFrom(JsonNormalizedNodeBodyReader.java:60)[256:org.opendaylight.controller.sal-rest-connector:1.2.0.SNAPSHOT]
at org.opendaylight.controller.sal.rest.impl.JsonNormalizedNodeBodyReader.readFrom(JsonNormalizedNodeBodyReader.java:41)[256:org.opendaylight.controller.sal-rest-connector:1.2.0.SNAPSHOT]
This is because the identifier portion of the URL was not specified. This is supposed to be allowed for POST (it used to work anyway).
Perhaps this should be a separate bug...
It looks like this may have been broken by https://git.opendaylight.org/gerrit/#/c/16209/2.
Yeah, in patch you mentioned is bug, which provides JSON failure for top-level element,
but without that patch JSON did not work at all.
ok - so there's progress - that's good 
(In reply to Tony Tkacik from comment #4)
> Yeah, in patch you mentioned is bug, which provides JSON failure for
> top-level element,
> but without that patch JSON did not work at all.
https://git.opendaylight.org/gerrit/#/c/16136/
This fixes PUT for JSON inputs
and also POST for JSON/XML for creation of data and RPCs.