[NETCONF-833] Leaf Node cannot be deleted inside NETCONF device via RESTCONF

Relates — Thu, 20 Jan 2022 16:37:04 +0000

Populate leaf node data cannot be erased by RESTCONF DELETE request. Request will fail on

{
    "errors": {
        "error": [
            {
                "error-tag": "operation-failed",
                "error-info": "java.lang.IllegalStateException: Value has not been set",
                "error-message": "Transaction failed",
                "error-type": "application"
            }
        ]
    }
}

In attachment is provided karaf.log file.

Used YANG model:

module test-model {  
  namespace "test:model";
  prefix tm;  
  revision 2021-11-11 {
    description "Initial revision.";
  }
  
  container test-container {
    leaf test-data {
      type string;
    }
  }
}

Steps to reproduce:

Add test-model.yang file to karaf schema `netconf/karaf/target/assembly/cache/schema`
Start netconf-testtool with path to test-model.yang

java -Xmx1G -jar netconf-testtool-2.0.9-SNAPSHOT-executable.jar --schemas-dir SCHEMA_PATH --device-count 1 --debug false --starting-port 36001 --ssh true --md-sal false

Start karaf and install features `odl-restconf-all` and `odl-netconf-topology`
Connect netconf-testtol to Netconf:

curl --request PUT 'http://localhost:8181/rests/data/network-topology:network-topology/topology=topology-netconf/node=new-netconf-device' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'Authorization: Basic YWRtaW46YWRtaW4=' \
--data-raw '{
    "node": [
        {
            "node-id": "new-netconf-device",
            "netconf-node-topology:port": 36001,
            "netconf-node-topology:reconnect-on-changed-schema": false,
            "netconf-node-topology:connection-timeout-millis": 20000,
            "netconf-node-topology:tcp-only": false,
            "netconf-node-topology:max-connection-attempts": 0,
            "netconf-node-topology:username": "admin",
            "netconf-node-topology:password": "admin",
            "netconf-node-topology:sleep-factor": 1.5,
            "netconf-node-topology:host": "127.0.0.1",
            "netconf-node-topology:between-attempts-timeout-millis": 2000,
            "netconf-node-topology:keepalive-delay": 120
        }
    ]
}'

Verify that device is connected.
Populate test-data inside netconf-testtool

curl --request PUT 'http://localhost:8181/rests/data/network-topology:network-topology/topology=topology-netconf/node=new-netconf-device/yang-ext:mount/test-model:test-container' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'Authorization: Basic YWRtaW46YWRtaW4=' \
--data-raw '{
    "test-model:test-container": {
        "test-data": "data"
    }
}'

Verify that data was written
Try to delete test-data

curl --request DELETE 'http://localhost:8181/rests/data/network-topology:network-topology/topology=topology-netconf/node=new-netconf-device/yang-ext:mount/test-model:test-container/test-data' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'Authorization: Basic YWRtaW46YWRtaW4=' \
--data-raw ''

The issue was reported on lighty.io:

https://github.com/PANTHEONtech/lighty/issues/843

OpenDaylight JIRA

[NETCONF-833] Leaf Node cannot be deleted inside NETCONF device via RESTCONF