folio-uuid 0.2.9

A library for generating predictive uuids for FOLIO data migrations

folio_uuid

A python module for creating deterministic UUIDs (UUID v5) outside of FOLIO when migrating data.

Installation

The module is uploaded to pypi. Just do

pip install folio-uuid

or

pipenv install folio-uuid      

Overview

The UUIDs (v5) are contstructed in the following way:

• The namespace is the same for all "Folio UUIDs": 8405ae4d-b315-42e1-918a-d1919900cf3f
• The name is contstructed by the following parts, delimited by a colon (:)
  • OKAPI_URL This should be the full OKAPI Url including https. Example: https://okapi-bugfest-juniper.folio.ebsco.com
  • OBJECT_TYPE_NAME This should be the name of the type of object that the ID is generated for. In plural. the file folio_namespaces.py in this repo has a complete list of the ones currently in use. Example: items
  • LEGACY_IDENTIFIER This should be the legacy identifier comming from the source system. The library will perform some normalization* of the identifier if it is a Sierra/Millennium identifier. Example: i3696836

* The normalization strips away any dots (.), check digits and campus codes from the identifiers

Tests/Examples

• The namespace is 8405ae4d-b315-42e1-918a-d1919900cf3f
• The name, constructed as OKAPI_URL:OBJECT_TYPE_NAME:LEGACY_IDENTIFIER would become https://okapi-bugfest-juniper.folio.ebsco.com:items:i3696836
• The resulting UUID then becomes 9647225d-d8e9-530d-b8cc-52a53be14e26

Bash/linux example

uuidgen --sha1 -n 8405ae4d-b315-42e1-918a-d1919900cf3f -N https://okapi-bugfest-juniper.folio.ebsco.com:items:i3696836

To install uuidgen on a apt-enabled Linux distribution, use

sudo apt-get install uuid-runtime

Python Example

def test_deterministic_uuid_generation_holdings():
    deterministic_uuid = FolioUUID(
	"https://okapi-bugfest-juniper.folio.ebsco.com",
	FOLIONamespaces.holdings,
	"000000167",
    )
    assert "a0b4c8a2-01fd-50fd-8158-81bd551412a0" == str(deterministic_uuid)

References

Wikipedia has an article on UUID version 5

There are many browser-based tools to create singe UUIDs v5. UUIDTools is one of them.