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# This file is part of cloud-init. See LICENSE file for license information.
import logging
from typing import Iterable, List
from cloudinit import subp, util
from cloudinit.distros.package_management.package_manager import (
PackageManager,
UninstalledPackages,
)
LOG = logging.getLogger(__name__)
class Snap(PackageManager):
name = "snap"
def available(self) -> bool:
return bool(subp.which("snap"))
def update_package_sources(self, *, force=False):
pass
def install_packages(self, pkglist: Iterable) -> UninstalledPackages:
# Snap doesn't provide us with a mechanism to know which packages
# are available or have failed, so install one at a time
pkglist = util.expand_package_list("%s=%s", list(pkglist))
failed: List[str] = []
for pkg in pkglist:
try:
subp.subp(["snap", "install"] + pkg.split("=", 1))
except subp.ProcessExecutionError:
failed.append(pkg)
LOG.info("Failed to 'snap install %s'!", pkg)
return failed
@staticmethod
def upgrade_packages():
command = ["snap", "get", "system", "-d"]
snap_hold = None
try:
result = subp.subp(command)
snap_hold = (
util.load_json(result.stdout).get("refresh", {}).get("hold")
)
except subp.ProcessExecutionError as e:
LOG.info(
"Continuing to snap refresh. Unable to run command: %s: %s",
command,
e,
)
if snap_hold == "forever":
LOG.info(
"Skipping snap refresh because refresh.hold is set to '%s'",
snap_hold,
)
else:
subp.subp(["snap", "refresh"])