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inject-metadata

Latest Versionv1.0.0
Input Content Typeapplication/json
Output Content Typeapplication/json

The inject-metadata transformer injects metadata, namely the device ID, the project ID, and the timestamp, into the data message payload, and nests the originaly payload under a top-level data key. This information is available in the message metadata when it is delivered to external destinations, so it is typically wasteful to also include it in the payload. However, there are some cases in which it may be desirable to access metadata in the payload.

Example Usage​

    transformer:
      type: inject-metadata
      version: v1

Example Input​

{
  "temp": 32
}

Example Output​

{
  "data": {
    "temp": 32
  },
  "device_id": "12345678987654321",
  "project_id": "my-first-project",
  "timestamp": {
    "nanos": 346519550,
    "seconds": 1647624308
  }
}