[NETCONF-80] RPC POST to yang-ext:mount doesn't support XML Attributes

Thu, 4 Nov 2021 23:31:58 +0000

Context:

I'm using the controller's ability to mount netconf devices to make it easy to script RESTCONF clients to access such devices's configuration. So I'd like to pass RPC get-config requests through RESTCONF yang-ext:mount which will only work if they include XML attributes and/or the json equivalent as per the NETCONF spec.

JSON Example:

1. Mount a netconf device, any will do
2. POST to http://localhost:8181/restconf/config/opendaylight-inventory:nodes/node/1-netconf-device/yang-ext:mount/ietf-netconf:get-config

with payload:

{
"ietf-netconf:input": {
"source":

{ "running": [null] }

,
"filter": {
},
"@filter":

{xpath,//users }

}
}

<errors
xmlns="urn:ietf:params:xml:ns:yang:ietf-restconf">
<error>
<error-type>protocol</error-type>
<error-tag>malformed-message</error-tag>
<error-message>Error parsing input: Schema node with name @filter wasn't found under (urn:ietf:params:xml:ns:netconf:base:1.0?revision=2011-06-01)input.</error-message>
<error-info>java.lang.IllegalStateException: Schema node with name @filter wasn't found under (urn:ietf:params:xml:ns:netconf:base:1.0?revision=2011-06-01)input.
at org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream.resolveNamespace(JsonParserStream.java:253)
at org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream.read(JsonParserStream.java:154)
.
.
.

XML Example:

1. Mount a netconf device, any will do
2. POST to http://localhost:8181/restconf/config/opendaylight-inventory:nodes/node/1-netconf-device/yang-ext:mount/ietf-netconf:get-config

With payload:

This will strip the attributes and return the entire configuration instead of the filtered config.

OpenDaylight JIRA

[NETCONF-80] RPC POST to yang-ext:mount doesn't support XML Attributes