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author | 2022-11-13 23:46:45 +0530 | |
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committer | 2022-11-13 23:46:45 +0530 | |
commit | 9468226a9e2e2ab8cdd599f1d8538e860ca86120 (patch) | |
tree | 0a77ada226d6db80639f96b438bf83e4e756edb5 /env/lib/python3.10/site-packages/pip/_internal/self_outdated_check.py | |
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id card generator
Diffstat (limited to 'env/lib/python3.10/site-packages/pip/_internal/self_outdated_check.py')
-rw-r--r-- | env/lib/python3.10/site-packages/pip/_internal/self_outdated_check.py | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/env/lib/python3.10/site-packages/pip/_internal/self_outdated_check.py b/env/lib/python3.10/site-packages/pip/_internal/self_outdated_check.py new file mode 100644 index 0000000..9e2149c --- /dev/null +++ b/env/lib/python3.10/site-packages/pip/_internal/self_outdated_check.py @@ -0,0 +1,239 @@ +import datetime +import functools +import hashlib +import json +import logging +import optparse +import os.path +import sys +from dataclasses import dataclass +from typing import Any, Callable, Dict, Optional + +from pip._vendor.packaging.version import parse as parse_version +from pip._vendor.rich.console import Group +from pip._vendor.rich.markup import escape +from pip._vendor.rich.text import Text + +from pip._internal.index.collector import LinkCollector +from pip._internal.index.package_finder import PackageFinder +from pip._internal.metadata import get_default_environment +from pip._internal.metadata.base import DistributionVersion +from pip._internal.models.selection_prefs import SelectionPreferences +from pip._internal.network.session import PipSession +from pip._internal.utils.compat import WINDOWS +from pip._internal.utils.entrypoints import ( + get_best_invocation_for_this_pip, + get_best_invocation_for_this_python, +) +from pip._internal.utils.filesystem import adjacent_tmp_file, check_path_owner, replace +from pip._internal.utils.misc import ensure_dir + +_DATE_FMT = "%Y-%m-%dT%H:%M:%SZ" + + +logger = logging.getLogger(__name__) + + +def _get_statefile_name(key: str) -> str: + key_bytes = key.encode() + name = hashlib.sha224(key_bytes).hexdigest() + return name + + +class SelfCheckState: + def __init__(self, cache_dir: str) -> None: + self._state: Dict[str, Any] = {} + self._statefile_path = None + + # Try to load the existing state + if cache_dir: + self._statefile_path = os.path.join( + cache_dir, "selfcheck", _get_statefile_name(self.key) + ) + try: + with open(self._statefile_path, encoding="utf-8") as statefile: + self._state = json.load(statefile) + except (OSError, ValueError, KeyError): + # Explicitly suppressing exceptions, since we don't want to + # error out if the cache file is invalid. + pass + + @property + def key(self) -> str: + return sys.prefix + + def get(self, current_time: datetime.datetime) -> Optional[str]: + """Check if we have a not-outdated version loaded already.""" + if not self._state: + return None + + if "last_check" not in self._state: + return None + + if "pypi_version" not in self._state: + return None + + seven_days_in_seconds = 7 * 24 * 60 * 60 + + # Determine if we need to refresh the state + last_check = datetime.datetime.strptime(self._state["last_check"], _DATE_FMT) + seconds_since_last_check = (current_time - last_check).total_seconds() + if seconds_since_last_check > seven_days_in_seconds: + return None + + return self._state["pypi_version"] + + def set(self, pypi_version: str, current_time: datetime.datetime) -> None: + # If we do not have a path to cache in, don't bother saving. + if not self._statefile_path: + return + + # Check to make sure that we own the directory + if not check_path_owner(os.path.dirname(self._statefile_path)): + return + + # Now that we've ensured the directory is owned by this user, we'll go + # ahead and make sure that all our directories are created. + ensure_dir(os.path.dirname(self._statefile_path)) + + state = { + # Include the key so it's easy to tell which pip wrote the + # file. + "key": self.key, + "last_check": current_time.strftime(_DATE_FMT), + "pypi_version": pypi_version, + } + + text = json.dumps(state, sort_keys=True, separators=(",", ":")) + + with adjacent_tmp_file(self._statefile_path) as f: + f.write(text.encode()) + + try: + # Since we have a prefix-specific state file, we can just + # overwrite whatever is there, no need to check. + replace(f.name, self._statefile_path) + except OSError: + # Best effort. + pass + + +@dataclass +class UpgradePrompt: + old: str + new: str + + def __rich__(self) -> Group: + if WINDOWS: + pip_cmd = f"{get_best_invocation_for_this_python()} -m pip" + else: + pip_cmd = get_best_invocation_for_this_pip() + + notice = "[bold][[reset][blue]notice[reset][bold]][reset]" + return Group( + Text(), + Text.from_markup( + f"{notice} A new release of pip available: " + f"[red]{self.old}[reset] -> [green]{self.new}[reset]" + ), + Text.from_markup( + f"{notice} To update, run: " + f"[green]{escape(pip_cmd)} install --upgrade pip" + ), + ) + + +def was_installed_by_pip(pkg: str) -> bool: + """Checks whether pkg was installed by pip + + This is used not to display the upgrade message when pip is in fact + installed by system package manager, such as dnf on Fedora. + """ + dist = get_default_environment().get_distribution(pkg) + return dist is not None and "pip" == dist.installer + + +def _get_current_remote_pip_version( + session: PipSession, options: optparse.Values +) -> str: + # Lets use PackageFinder to see what the latest pip version is + link_collector = LinkCollector.create( + session, + options=options, + suppress_no_index=True, + ) + + # Pass allow_yanked=False so we don't suggest upgrading to a + # yanked version. + selection_prefs = SelectionPreferences( + allow_yanked=False, + allow_all_prereleases=False, # Explicitly set to False + ) + + finder = PackageFinder.create( + link_collector=link_collector, + selection_prefs=selection_prefs, + ) + best_candidate = finder.find_best_candidate("pip").best_candidate + if best_candidate is None: + return + + return str(best_candidate.version) + + +def _self_version_check_logic( + *, + state: SelfCheckState, + current_time: datetime.datetime, + local_version: DistributionVersion, + get_remote_version: Callable[[], str], +) -> Optional[UpgradePrompt]: + remote_version_str = state.get(current_time) + if remote_version_str is None: + remote_version_str = get_remote_version() + state.set(remote_version_str, current_time) + + remote_version = parse_version(remote_version_str) + logger.debug("Remote version of pip: %s", remote_version) + logger.debug("Local version of pip: %s", local_version) + + pip_installed_by_pip = was_installed_by_pip("pip") + logger.debug("Was pip installed by pip? %s", pip_installed_by_pip) + if not pip_installed_by_pip: + return None # Only suggest upgrade if pip is installed by pip. + + local_version_is_older = ( + local_version < remote_version + and local_version.base_version != remote_version.base_version + ) + if local_version_is_older: + return UpgradePrompt(old=str(local_version), new=remote_version_str) + + return None + + +def pip_self_version_check(session: PipSession, options: optparse.Values) -> None: + """Check for an update for pip. + + Limit the frequency of checks to once per week. State is stored either in + the active virtualenv or in the user's USER_CACHE_DIR keyed off the prefix + of the pip script path. + """ + installed_dist = get_default_environment().get_distribution("pip") + if not installed_dist: + return + + try: + upgrade_prompt = _self_version_check_logic( + state=SelfCheckState(cache_dir=options.cache_dir), + current_time=datetime.datetime.utcnow(), + local_version=installed_dist.version, + get_remote_version=functools.partial( + _get_current_remote_pip_version, session, options + ), + ) + if upgrade_prompt is not None: + logger.warning("[present-rich] %s", upgrade_prompt) + except Exception: + logger.warning("There was an error checking the latest version of pip.") + logger.debug("See below for error", exc_info=True) |