docs: new feature doc for openflow

src/content/docs/snowflake/features/openflow.md

@@ -0,0 +1,72 @@
+---
+title: "Openflow"
+description: Get started with Openflow in LocalStack for Snowflake
+tags: ["Base"]
+---
+
+## Introduction
+Openflow is Snowflake’s data movement service that provides a unified platform for building, scaling, and managing data pipelines. It is powered by Apache NiFi and enables flexible data ingestion, transformation, and integration across diverse sources and destinations.
+
+The Snowflake emulator in LocalStack supports **basic Openflow functionality** by using Apache NiFi. This allows you to experiment locally with Openflow concepts, such as creating processors and running SQL queries against the Snowflake emulator.
+
+You can access the Openflow UI when the emulator is running at:
+
+```
+https://snowflake.localhost.localstack.cloud:4566/openflow/
+```
+
+:::note
+Openflow in LocalStack for Snowflake is intended for local experimentation. It does not provide the full set of managed Openflow capabilities available in Snowflake’s cloud platform.
+:::
+
+## Getting started
+To begin using Openflow in LocalStack:
+
+1. Start your Snowflake emulator.
+2. Open the following URL in your browser: `https://snowflake.localhost.localstack.cloud:4566/openflow/`
+
+![Openflow running locally via Apache NiFi](/images/snowflake/openflow-feature/openflow-nifi.png)
+
+The first load may take some time, as Apache NiFi dependencies are downloaded and initialized.
+
+Once the UI is available, you can create and configure NiFi processors directly in your browser.
+
+### Running a query with ExecuteSQL
+The following example demonstrates how to run a simple query against the Snowflake emulator using the `ExecuteSQL` processor.
+
+1. Add an ExecuteSQL processor: Drag the `ExecuteSQL` processor onto the canvas in the Openflow UI.
+
+2. Configure the processor:
+- Set the **Database Connection Pooling Service** to use the default `Snowflake Connection Pool`.
+
+![Processor](/images/snowflake/openflow-feature/processor.png)
+
+- Enter a query, for example:
+
+```sql
+SELECT 123;
+```
+
+- In the **Relationships** tab, configure the processor to terminate or retry on `failure` and `success`.
+
+![Terminate Processor](/images/snowflake/openflow-feature/terminate-processor.png)
+
+
+3. Start the processor: Right-click the processor and choose **Start**. The processor will run the SQL query against the Snowflake emulator.
+
+![Start Processor](/images/snowflake/openflow-feature/start-processor.png)
+
+
+4. Verify execution: In the emulator logs, you should see the executed query:
+
+```sql
+Running query (account/DB/schema TEST/TEST/public): SELECT 123
+```
+
+
+
+:::note
+## Limitations
+- The initial download of Apache NiFi is large (~750 MB) and may take several minutes.  
+- Only basic UI and processor creation are supported. Advanced Openflow functionality, including governance, AI capabilities, and managed connectors, is not included in the local emulator.
+:::