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Get Eventstream Definition

  • Article

Use to get an Eventstream item definition with detailed information about its topology including source, destinations, operators, and streams

Interface

POST https://api.fabric.microsoft.com/v1/workspaces/{workspaceId}/eventstreams/{eventstreamId}/getDefinition

URI Parameters

Name In Required Type Description
eventstreamId path True string uuid The eventstream ID.
workspaceId path True string uuid The workspace ID.
format query False string The format of the eventstream public definition.

Sample request

POST https://api.fabric.microsoft.com/v1/workspaces/6e335e92-a2a2-4b5a-970a-bd6a89fbb765/eventstreams/cfafbeb1-8037-4d0c-896e-a46fb27ff229/getDefinition

Sample Response

The sample response includes a payload with a Base64-encoded string.

{
  "definition": {
    "parts": [
      {
        "path": "eventstream.json",
        "payload": "SSdkIGxpa2UgdG8gdGVsbCBh..IGpva2UgZm9yIHlvdS4K",
        "payloadType": "InlineBase64"
      },
      {
        "path": ".platform",
        "payload": "ZG90UGxhdGZvcm1CYXNlNjRTdHJpbmc=",
        "payloadType": "InlineBase64"
      }
    ]
  }
}

Below is the decoded payload content of the Base64 string for reference.

{
  "sources": [
    {
      "name": "SqlServerOnVmDbCdc",
      "type": "SQLServerOnVMDBCDC",
      "properties":
      {
        "dataConnectionId": "aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb",
        "tableName": ""
      }
    }
  ],
  "destinations": [
    {
      "name": "Lakehouse",
      "type": "Lakehouse",
      "properties":
      {
        "workspaceId": "bbbb1111-cc22-3333-44dd-555555eeeeee",
        "itemId": "cccc2222-dd33-4444-55ee-666666ffffff",
        "schema": "",
        "deltaTable": "newTable",
        "minimumRows": 100000,
        "maximumDurationInSeconds": 120,
        "inputSerialization":
        {
          "type": "Json",
          "properties":
          {
            "encoding": "UTF8"
          }
        }
      },
      "inputNodes": [{"name": "derivedStream"}]
    }
  ],
  "streams": [
    {
      "name": "myEventstream-stream",
      "type": "DefaultStream",
      "properties":
      {},
      "inputNodes": [{"name": "SqlServerOnVmDbCdc"}]
    },
    {
      "name": "derivedStream",
      "type": "DerivedStream",
      "properties":
      {
        "inputSerialization":
        {
          "type": "Json",
          "properties":
          {
            "encoding": "UTF8"
          }
        }
      },
      "inputNodes": [{"name": "GroupBy"}]
    }
  ],
  "operators": [
    {
      "name": "GroupBy",
      "type": "GroupBy",
      "inputNodes": [{"name": "myEventstream-stream"}],
      "properties":
      {
        "aggregations": [
          {
            "aggregateFunction": "Average",
            "column":
            {
              "expressionType": "ColumnReference",
              "node": null,
              "columnName": "payload",
              "columnPathSegments": [{"field": "ts_ms"}]
            },
            "alias": "AVG_ts_ms"
          }
        ],
        "groupBy": [],
        "window":
        {
          "type": "Tumbling",
          "properties":
          {
            "duration":
            {
              "value": 5,
              "unit": "Minute"
            },
            "offset":
            {
              "value": 1,
              "unit": "Minute"
            }
          }
        }
      }
    }
  ],
  "compatibilityLevel": "1.0"
}

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