ARM template to create ASA job with javascript UDAs

Question

I have a stream analytics job which uses a number of javascript UDFs and UDAs. I would like to be able to deploy this using an Azure resource manager template.

The documentation at https://learn.microsoft.com/en-us/rest/api/streamanalytics/stream-analytics-function seems rather outdated and only describes Scalar functions, which I assume means UDFs.

Are there any documentation or examples showing how to create UDAs using an ARM template?

Answer 1

For UDAs you should use "type":"Aggregate" in your Functions section of the template. Example below.

{
  "properties": {
    "type": "Aggregate",  //Aggregate type.
    "properties": {
      "inputs": [ // accumulate input parameter(s).
        {
          "dataType": "any", // Input data type
        }
      ],
      "output": { // Output
        "dataType": "any" // Output data type
      },
      "binding": {
        "type": "Microsoft.StreamAnalytics/JavascriptUdf",
        "properties": { // Aggregate definition
          "script": "function main() {
                          this.init = function () {
                              this.state = 0;
                          }

                          this.accumulate = function (value, timestamp) {
                              this.state += value;
                          }

                          this.computeResult = function () {
                              return this.state;
                          }
                     }"
        }
      }
    }
  }
}

Microsoft docs reference: https://learn.microsoft.com/en-us/rest/api/streamanalytics/stream-analytics-aggregate