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unwrap.debezium

Unwraps a Debezium record from the input OpenCDC record.

Description​

In this processor, the wrapped (Debezium) record replaces the wrapping record (being processed) completely, except for the position.

The Debezium record's metadata and the wrapping record's metadata is merged, with the Debezium metadata having precedence.

This is useful in cases where Conduit acts as an intermediary between a Debezium source and a Debezium destination. In such cases, the Debezium record is set as the OpenCDC record's payload,and needs to be unwrapped for further usage.

Configuration parameters​

version: 2.2
pipelines:
  - id: example
    status: running
    connectors:
      # define source and destination ...
    processors:
      - id: example
        plugin: "unwrap.debezium"
        settings:
          # Field is a reference to the field that contains the Debezium record.
          # For more information about the format, see [Referencing
          # fields](https://conduit.io/docs/processors/referencing-fields).
          # Type: string
          field: ".Payload.After"

Examples​

Unwrap a Debezium record​

This example how to unwrap a Debezium record from a field nested in a record's .Payload.After field. It additionally shows how the key is unwrapped, and the metadata merged.

Configuration parameters​

version: 2.2
pipelines:
  - id: example
    status: running
    connectors:
      # define source and destination ...
    processors:
      - id: example
        plugin: "unwrap.debezium"
        settings:
          field: ".Payload.After.nested"

Record difference​

Before
After
1
{
1
{
2
  "position": "dGVzdC1wb3NpdGlvbg==",
2
  "position": "dGVzdC1wb3NpdGlvbg==",
3
  "operation": "create",
3
  "operation": "create",
4
  "metadata": {
4
  "metadata": {
5
-
    "metadata-key": "metadata-value"
5
+
    "metadata-key": "metadata-value",
6
+
    "opencdc.readAt": "1674061777225877000",
7
+
    "opencdc.version": "v1"
6
  },
8
  },
7
-
  "key": "{\"payload\":\"27\"}",
9
+
  "key": "27",
8
  "payload": {
10
  "payload": {
9
    "before": null,
11
    "before": null,
10
    "after": {
12
    "after": {
11
-
      "nested": "{\n  \"payload\": {\n    \"after\": {\n      \"description\": \"test1\",\n      \"id\": 27\n    },\n    \"before\": null,\n    \"op\": \"c\",\n    \"source\": {\n      \"opencdc.readAt\": \"1674061777225877000\",\n      \"opencdc.version\": \"v1\"\n    },\n    \"transaction\": null,\n    \"ts_ms\": 1674061777225\n  },\n  \"schema\": {}\n}"
13
+
      "description": "test1",
14
+
      "id": 27
12
    }
15
    }
13
  }
16
  }
14
}
17
}


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