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yang-validator

The yang-validator project utilizes pyang to provide a method for assisting equipment vendors to utilize OpenConfig YANG JSON for existing platforms that are not already OpenConfig. yang-validator also utilizes nameko and rabbitmq to provide a microservice for validating JSON messages are infact OpenConfig compliant.

yang-validator is also used in conjuction with jtransformer. jtransformer can be found at: https://github.com/Verizon/YANG-transformer. jtransformer can be used for making the actual transformations from none OpenConfig compliant YANG to OpenConfig compliant YANG using the mappings from this project.

When developing on macos there is a challenge with connecting to localhost for nameko to rabbitmq. Edit config.yaml to specify the ip address of the location of rabbitmq.

Tested Versions

  • Python 3.7.3
  • nameko 2.12.0 pip install 'nameko==2.12.0'
  • pyang 2.0.1 pip install 'pyang==2.0.1'
  • pyangbind 0.8.1 pip install 'pyangbind==0.8.1'

Mapping Files

All mapping files are contained in transformer/mappings directory. These files explain how to go from a propietary JSON to OpenConfig.

Models

OpenConfig models are contained in this directory. Also included are specific enhancements not yet included in OpenConfig. Care should be taken when enhancing the models without discussion with OpenConfig.

Build for Docker

docker build -t transformer .

Run

docker run -d -p 5672:5672 --hostname nameko-rabbitmq rabbitmq:3

Run Validator Python

docker run --rm -it -p 8000:8000 transformer

Run in the background

docker run -d --rm -it -p 8000:8000 transformer

Note: There is an issue on MacOS with Docker calling localhost or 127.0.0.1. You must use your ip address with the transformer to invoke rabittmq. You edit that ip address in the YAML file

Test the Validator

curl -i -d "{\"topic\": \"ENMV_SAMSUNG5G_CPEDATA\", \"jsonStr\": {\"perfdata\": {\"eventTime\": \"2019-03-23T02:50:00+00:00\", \"annotatedFamilyId\": \"CPE_RESOURCE\", \"neId\": \"100\", \"neType\": \"cpefama\", \"familyId\": 601, \"neVersion\": \"v_0_2_3_28\", \"indexData\": {\"0\": {\"indexId\": 0, \"indexName\": \"CPE ID\", \"indexValue\": \"20dbab03f5ec\"}}, \"payloadData\": {\"0\": {\"typeId\": 0, \"valueUnit\": \"%\", \"typeValue\": \"2.066667\", \"valueType\": \"float\", \"typeName\": \"ControlCpuUsage\"}, \"1\": {\"typeId\": 1, \"valueUnit\": \"%\", \"typeValue\": \"26.000000\", \"valueType\": \"float\", \"typeName\": \"MemoryUsage\"}, \"2\": {\"typeId\": 2, \"valueUnit\": \"%\", \"typeValue\": \"10.000000\", \"valueType\": \"float\", \"typeName\": \"DiskUsage\"}, \"3\": {\"typeId\": 3, \"valueUnit\": \"\u00b0C\", \"typeValue\": \"27.000000\", \"valueType\": \"float\", \"typeName\": \"Temperature\"}}}}}" localhost:8000/validateYang

Run Standalone

From the transformer directory run:

nameko run toYangJsonSvc

View Docker logs

First get the container id docker ps

then execute bash on container id to see logs docker exec -it 36dd5a020491 bash

Stop the container

docker stop 9158083d86fa