[BUG] REST Connector timeseries-key bug

[l33tkrew]

Describe the bug When I send only one key (hum) from MQTT connector the message is

{"SN-1": [{"ts": 1650299502141, "values": {"humidity": "50.64"}}]}

When I send only one key (temp) from REST connector (temp or hum), the message is

 {"SN-2": [{"ts": 1650299503743, "values": {"temperature": "19.85", "humidity": "${hum}"}}]}

As you can see, even if I do not send humidity data through the REST connector, it appears in REST connector message. But MQTT connector does not show unspecified key/value.

Connector name (If bug in the some connector): REST Connector

{
  "host": "***********",
  "port": "5000",
  "SSL": false,
  "security": {
    "cert": "~/ssl/cert.pem",
    "key": "~/ssl/key.pem"
  },
  "mapping": [
    {
      "endpoint": "/devices1",
      "HTTPMethods": [
        "POST"
      ],
      "security": {
        "type": "basic",
        "username": "**************",
        "password": "**********"
      },
      "converter": {
        "type": "json",
        "deviceNameExpression": "${serialNumber}",
        "deviceTypeExpression": "${sensorType}",
        "attributes": [
          {
            "type": "string",
            "key": "model",
            "value": "${sensorModel}"
          },
          {
            "type": "string",
            "key": "certificateNumber",
            "value": "${certificateNumber}"
          }
        ],
        "timeseries": [
          {
            "type": "double",
            "key": "temperature",
            "value": "${temp}"
          },
          {
            "type": "double",
            "key": "humidity",
            "value": "${hum}"
          }
        ]
      }
    },
    {
      "endpoint": "/anon1",
      "HTTPMethods": [
        "GET",
        "POST"
      ],
      "security": {
        "type": "anonymous"
      },
      "converter": {
        "type": "json",
        "deviceNameExpression": "Device 2",
        "deviceTypeExpression": "default",
        "attributes": [
          {
            "type": "string",
            "key": "model",
            "value": "Model2"
          }
        ],
        "timeseries": [
          {
            "type": "double",
            "key": "temperature",
            "value": "${temp}"
          },
          {
            "type": "double",
            "key": "humidity",
            "value": "${hum}"
          }
        ]
      }
    },
    {
      "endpoint": "/anon2",
      "HTTPMethods": [
        "POST"
      ],
      "security": {
        "type": "anonymous"
      },
      "converter": {
        "type": "custom",
        "deviceNameExpression": "SuperAnonDevice",
        "deviceTypeExpression": "default",
        "extension": "CustomRestUplinkConverter",
        "extension-config": [
          {
            "key": "Totaliser",
            "datatype": "float",
            "fromByte": 0,
            "toByte": 4,
            "byteorder": "big",
            "signed": true,
            "multiplier": 1
          }
        ]
      }
    }
  ],
  "attributeRequests": [
    {
      "endpoint": "/sharedAttributes",
      "type": "shared",
      "HTTPMethods": [
        "POST"
      ],
      "security": {
        "type": "anonymous"
      },
      "timeout": 10.0,
      "deviceNameExpression": "${deviceName}",
      "attributeNameExpression": "${attribute}"
    }
  ],
  "attributeUpdates": [
    {
      "HTTPMethod": "POST",
      "SSLVerify": false,
      "httpHeaders": {
        "CONTENT-TYPE": "application/json"
      },
      "security": {
        "type": "anonymous"
      },
      "timeout": 0.5,
      "tries": 3,
      "allowRedirects": true,
      "deviceNameFilter": "SN.*",
      "attributeFilter": ".*",
      "requestUrlExpression": "http://127.0.0.1:5001/",
      "valueExpression": "{\"deviceName\":\"${deviceName}\",\"${attributeKey}\":\"${attributeValue}\"}"
    }
  ],
  "serverSideRpc": [
    {
      "deviceNameFilter": ".*",
      "methodFilter": "echo",
      "requestUrlExpression": "http://127.0.0.1:5001/${deviceName}",
      "responseTimeout": 1,
      "HTTPMethod": "GET",
      "valueExpression": "${params}",
      "timeout": 10.0,
      "tries": 3,
      "httpHeaders": {
        "Content-Type": "application/json"
      },
      "security": {
        "type": "anonymous"
      }
    },
    {
      "deviceNameFilter": "SN.*",
      "methodFilter": "post_attributes",
      "requestUrlExpression": "http://127.0.0.1:5000/devices1",
      "responseTimeout": 1,
      "HTTPMethod": "POST",
      "valueExpression": "{\"sensorName\":\"${deviceName}\", \"sensorModel\":\"${params.sensorModel}\", \"certificateNumber\":\"${params.certificateNumber}\", \"temp\":\"${params.temp}\", \"hum\":\"${params.hum}\"}",
      "timeout": 10.0,
      "tries": 3,
      "httpHeaders": {
        "Content-Type": "application/json"
      },
      "security": {
        "type": "anonymous"
      }
    },
    {
      "deviceNameFilter": ".*",
      "methodFilter": "no-reply",
      "requestUrlExpression": "sensor/${deviceName}/request/${methodName}/${requestId}",
      "HTTPMethod": "POST",
      "valueExpression": "${params}",
      "httpHeaders": {
        "Content-Type": "application/json"
      },
      "security": {
        "type": "anonymous"
      }
    }
  ]
}

Versions (please complete the following information):

• OS: Ubuntu 20.04
• Thingsboard IoT Gateway version: TB-gateway docker
• Python version: 3.8

[samson0v]

Hi @l33tkrew, we will fix this bug in the nearest future.