NiFi Ingest 25.2
NiFi Ingest

# Introduction

The repositories that your organization uses to store data are likely to have different structures. A file system organizes information in files and folders, and so do repositories like OneDrive, but other systems might not resemble a file system at all. To help migrate data between repositories, some connectors add a metadata field named `AUTN_MIGRATION_URI` to each document.

The `AUTN_MIGRATION_URI` contains a path that a connector can use when inserting a document into the destination repository. For example, a OneDrive Connector might process a Microsoft Word document named `my_document.docx` and create the following `AUTN_MIGRATION_URI`:

    /path/to/my_document.docx?driveId=1234

The parameters at the end of the URI specify information about the item's origin. In this example, the file originated from a drive with the ID `1234`. These parameters are useful when you want to insert the item back in its original location. For example, you might take files out of a OneDrive repository, transform them in some way, and then insert them back into OneDrive. An example use case might be applying encryption to sensitive information.

To insert this file into a different repository, you must specify some more information. For example, to insert the file into a standard file system you would need to specify the location of a root directory. A File System Connector could then insert the file in the location `<root>/path/to/my_document.docx`. To insert the file into SharePoint, a SharePoint OData connector would need the URL of the SharePoint site to insert the document into, and the title of a suitable document library. You can specify this additional information by:

- configuring dynamic properties on the `Put*` processor that inserts the item into the destination repository. These dynamic properties specify default values for all FlowFiles processed by that processor.
- modifying the `AUTN_MIGRATION_URI`, and appending additional parameters required by the `Put*` processor that inserts the item into the destination repository. For example, you could modify the URI using Lua.

In advanced use cases you could even generate a complete `AUTN_MIGRATION_URI` yourself. The path elements in the URI must be URL-encoded.

The `Put*` processors that insert files into a repository read the `AUTN_MIGRATION_URI` from a FlowFile attribute named `idol.put.migrationuri`.

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Version 25.2 | Last updated April 2025

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Product: Knowledge Discovery NiFi Ingest 25.2

Topic Title: Introduction