add sample python connector

[abdullah-cognite]

Steps to test:

• Prerequisite: make sure python is installed on your machine
• Setup the config file (using config.example.yml)
• Run the connector
• Create a model (upload the simulate.py file from the scripts folder)
• Create a routine
• Run a simulation.

This is only a proof of concept. Allowing the connector to download and execute Python code (as a model) could pose a security risk. Ideally, the Python scripts should already reside on the VM, with parameters passed in via routines.

Model (simulate.py):

Routine example:

Succesful run:

Run data:

Routine JSON (Partial):

"configuration": {
    "schedule": {
      "enabled": false
    },
    "dataSampling": {
      "enabled": false
    },
    "logicalCheck": [],
    "steadyStateDetection": [],
    "inputs": [
      {
        "name": "inlet_temp",
        "referenceId": "inlet_temp",
        "value": 33,
        "valueType": "DOUBLE",
        "unit": {
          "name": "C",
          "quantity": "Temperature"
        }
      },
      {
        "name": "flow_rate",
        "referenceId": "flow_rate",
        "value": 1,
        "valueType": "DOUBLE",
        "unit": {
          "name": "bar",
          "quantity": "Pressure"
        }
      }
    ],
    "outputs": [
      {
        "name": "outlet_temp",
        "referenceId": "outlet_temp",
        "unit": {
          "name": "C",
          "quantity": "Temperature"
        },
        "valueType": "DOUBLE"
      }
    ]
  },
  "script": [
    {
      "order": 1,
      "steps": [
        {
          "order": 1,
          "stepType": "Set",
          "arguments": {
            "referenceId": "inlet_temp",
            "variable": "inlet_temp"
          }
        },
        {
          "order": 2,
          "description": "flow_rate",
          "stepType": "Set",
          "arguments": {
            "referenceId": "flow_rate",
            "variable": "flow_rate"
          }
        }
      ]
    },
    {
      "order": 2,
      "steps": [
        {
          "order": 1,
          "stepType": "Command",
          "arguments": {
            "script": "-"
          }
        }
      ]
    },
    {
      "order": 3,
      "steps": [
        {
          "order": 1,
          "stepType": "Get",
          "arguments": {
            "referenceId": "outlet_temp",
            "variable": "outlet_temp"
          }
        }
      ]
    }
  ]

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.49%. Comparing base (5e5a028) to head (b4d070f).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #320      +/-   ##
==========================================
- Coverage   74.59%   74.49%   -0.10%     
==========================================
  Files          38       38              
  Lines        4074     4074              
  Branches      487      487              
==========================================
- Hits         3039     3035       -4     
- Misses        852      856       +4     
  Partials      183      183              

see 1 file with indirect coverage changes

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[abdullah-cognite]

closing in favor of #322