Edits history of script submission #11460 for ' SQS trigger script with preprocessor template (windmill)'

• bun

  Edit in Windmill

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  /**
   * General Trigger Preprocessor
   *
   * ⚠️ This function runs BEFORE the main function.
   *
   * It processes raw trigger data (e.g., MQTT, HTTP, SQS) before passing it to main().
   * Common tasks:
   * - Convert binary payloads to string/JSON
   * - Extract metadata
   * - Filter messages
   * - Add timestamps/context
   *
   * The returned object determines main() parameters:
   * - {a: 1, b: 2} → main(a, b)
   * - {msg} → main(msg)
   *
   * @param wm_trigger - Trigger details (e.g., MQTT, HTTP, SQS)
   * @param msg - Raw trigger data (format varies by trigger type)
   * @returns Processed data for main()
   */
  
  export async function preprocessor(
    wm_trigger: {
      kind: 'http' | 'email' | 'webhook' | 'websocket' | 'kafka' | 'nats' | 'postgres' | 'sqs' | 'mqtt',
      sqs?: {
        queue_url: string,
        message_id?: string,
        receipt_handle?: string,
        attributes: Record<string, string>,
        message_attributes?: Record<string, {
          string_value?: string,
          data_type: string
        }>
      }
    },
    msg: string
  ) {
    if (wm_trigger.kind === 'sqs' && wm_trigger.sqs) {
      return {
        queueUrl: wm_trigger.sqs.queue_url,
        messageId: wm_trigger.sqs.message_id,
        receiptHandle: wm_trigger.sqs.receipt_handle,
        attributes: wm_trigger.sqs.attributes,
        messageAttributes: wm_trigger.sqs.message_attributes,
        msg
      };
    }
    
    throw new Error(`Expected sqs trigger kind, got: ${wm_trigger.kind}`);
  }
  
  /**
   * Main Function - Handles processed trigger events
   *
   * ⚠️ Called AFTER preprocessor(), with its return values.
   *
   * @param queueUrl - URL of the SQS queue
   * @param messageId - Unique message identifier (if available)
   * @param receiptHandle - Receipt handle for message deletion (if available)
   * @param attributes - Message attributes from SQS
   * @param messageAttributes - Custom message attributes (if any)
   * @param msg - Raw message content
   */
  export async function main(
    queueUrl: string,
    messageId: string | undefined,
    receiptHandle: string | undefined,
    attributes: Record<string, string>,
    messageAttributes: Record<string, { string_value?: string; data_type: string }> | undefined,
    msg: string
  ) {
    // Implement the main function logic here
  }
  

  Submitted by dieriba.pro916 435 days ago