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"""
Client version related functions
"""
import os.path
from math import inf
from typing import Optional
from uaclient.apt import (
get_apt_cache_time,
get_pkg_candidate_version,
version_compare,
)
from uaclient.defaults import CANDIDATE_CACHE_PATH, UAC_RUN_PATH
from uaclient.exceptions import ProcessExecutionError
from uaclient.system import subp
__VERSION__ = "34"
PACKAGED_VERSION = "34~20.04"
def get_version() -> str:
"""Return the packaged version as a string
Prefer the binary PACKAGED_VESION set by debian/rules to DEB_VERSION.
If unavailable, check for a .git development environments:
a. If run in our upstream repo `git describe` will gives a leading
XX.Y so return the --long version to allow daily build recipes
to count commit offset from upstream's XX.Y signed tag.
b. If run in a git-ubuntu pkg repo, upstream tags aren't visible,
believe __VERSION__ is correct - there is and MUST always be a
test to make sure it matches debian/changelog
"""
if not PACKAGED_VERSION.startswith("@@PACKAGED_VERSION"):
return PACKAGED_VERSION
topdir = os.path.dirname(os.path.dirname(__file__))
if os.path.exists(os.path.join(topdir, ".git")):
cmd = ["git", "describe", "--abbrev=8", "--match=[0-9]*", "--long"]
try:
out, _ = subp(cmd)
return out.strip()
except ProcessExecutionError:
pass
return __VERSION__
def get_last_known_candidate() -> Optional[str]:
# If we can't determine when the cache was updated for the last time,
# We always assume it was as recent as possible - thus `inf`.
last_apt_cache_update = get_apt_cache_time() or inf
if (
not os.path.exists(CANDIDATE_CACHE_PATH)
or os.stat(CANDIDATE_CACHE_PATH).st_mtime < last_apt_cache_update
):
candidate_version = None
try:
candidate_version = get_pkg_candidate_version("ubuntu-pro-client")
if candidate_version:
os.makedirs(UAC_RUN_PATH, exist_ok=True)
with open(CANDIDATE_CACHE_PATH, "w") as f:
f.write(candidate_version)
return candidate_version
except Exception:
if candidate_version is not None:
return candidate_version
try:
with open(CANDIDATE_CACHE_PATH, "r") as f:
return f.read().strip()
except Exception:
pass
return None
def check_for_new_version() -> Optional[str]:
candidate = get_last_known_candidate()
if candidate and version_compare(candidate, get_version()) > 0:
return candidate
return None