[NETCONF-1245] Full list delete fails when called on remote device via restconf

Blocks — Fri, 2 Feb 2024 12:01:51 +0000

The full list deletion could be invoked on processing new item insertion into ordered list.

When netconf edit-config message is constructed for remove operation using yang instance identifier pointing to list the message like below occurs

<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="m-19">
    <edit-config>
        <target>
            <candidate/>
        </target>
        <config>
            <root xmlns="http://example.com/user-ordered-list" xmlns:op="urn:ietf:params:xml:ns:netconf:base:1.0" op:operation="remove">
                <items/>
            </root>
        </config>
    </edit-config>
</rpc>

According to https://datatracker.ietf.org/doc/html/rfc6241#section-7.2 the operation expected to be defined on element the operation being applied to.

The message above instructs to remove parent container (instead of list elements within), and empty <items/> causes parse error, because the key is mandatory.

In order to remove all the elements belonging to requested list all the elements require to be listed like below

<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="m-19">
    <edit-config>
        <target>
            <candidate/>
        </target>
        <config>
            <root xmlns="http://example.com/user-ordered-list" xmlns:op="urn:ietf:params:xml:ns:netconf:base:1.0">
                <items op:operation="remove">
                    <id>0</id>
                </items>
                <items op:operation="remove">
                    <id>1</id>
                </items>
            </root>
        </config>
    </edit-config>
</rpc>

OpenDaylight JIRA

[NETCONF-1245] Full list delete fails when called on remote device via restconf