feast/sdk/python/feast/version_utils.py at v0.63.0 · feast-dev/feast · GitHub

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import re

import uuid

from typing import Tuple

LATEST_VERSION = "latest"

_VERSION_PATTERN = re.compile(r"^v(?:ersion)?(\d+)$", re.IGNORECASE)

def parse_version(version: str) -> Tuple[bool, int]:

"""Parse a version string into (is_latest, version_number).

Accepts "latest", "vN", or "versionN" (case-insensitive).

Returns (True, 0) for "latest", (False, N) for pinned versions.

Raises:

ValueError: If the version string is invalid.

"""

if not version or version.lower() == LATEST_VERSION:

return True, 0

match = _VERSION_PATTERN.match(version)

if not match:

raise ValueError(

f"Invalid version string '{version}'. "

f"Expected 'latest', 'vN', or 'versionN' (e.g. 'v2', 'version3')."

)

return False, int(match.group(1))

def normalize_version_string(version: str) -> str:

"""Normalize a version string for comparison.

Empty string and "latest" both normalize to "latest".

"v2" and "version2" both normalize to "v2".

"""

if not version or version.lower() == LATEST_VERSION:

return LATEST_VERSION

is_latest, num = parse_version(version)

if is_latest:

return LATEST_VERSION

return version_tag(num)

def version_tag(n: int) -> str:

"""Convert an integer version number to the canonical short form 'vN'."""

return f"v{n}"

def generate_version_id() -> str:

"""Generate a UUID for a version record."""

return str(uuid.uuid4())

feast/sdk/python/feast/version_utils.py at v0.63.0 · feast-dev/feast · GitHub

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