163 lines
5.3 KiB
Python
163 lines
5.3 KiB
Python
from __future__ import absolute_import
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import datetime
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import json
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import logging
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import os.path
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import sys
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from pip._vendor import lockfile
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from pip._vendor.packaging import version as packaging_version
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from pip.compat import total_seconds, WINDOWS
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from pip.models import PyPI
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from pip.locations import USER_CACHE_DIR, running_under_virtualenv
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from pip.utils import ensure_dir, get_installed_version
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from pip.utils.filesystem import check_path_owner
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SELFCHECK_DATE_FMT = "%Y-%m-%dT%H:%M:%SZ"
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logger = logging.getLogger(__name__)
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class VirtualenvSelfCheckState(object):
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def __init__(self):
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self.statefile_path = os.path.join(sys.prefix, "pip-selfcheck.json")
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# Load the existing state
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try:
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with open(self.statefile_path) as statefile:
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self.state = json.load(statefile)
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except (IOError, ValueError):
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self.state = {}
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def save(self, pypi_version, current_time):
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# Attempt to write out our version check file
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with open(self.statefile_path, "w") as statefile:
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json.dump(
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{
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"last_check": current_time.strftime(SELFCHECK_DATE_FMT),
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"pypi_version": pypi_version,
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},
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statefile,
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sort_keys=True,
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separators=(",", ":")
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)
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class GlobalSelfCheckState(object):
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def __init__(self):
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self.statefile_path = os.path.join(USER_CACHE_DIR, "selfcheck.json")
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# Load the existing state
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try:
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with open(self.statefile_path) as statefile:
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self.state = json.load(statefile)[sys.prefix]
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except (IOError, ValueError, KeyError):
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self.state = {}
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def save(self, pypi_version, current_time):
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# Check to make sure that we own the directory
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if not check_path_owner(os.path.dirname(self.statefile_path)):
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return
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# Now that we've ensured the directory is owned by this user, we'll go
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# ahead and make sure that all our directories are created.
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ensure_dir(os.path.dirname(self.statefile_path))
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# Attempt to write out our version check file
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with lockfile.LockFile(self.statefile_path):
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if os.path.exists(self.statefile_path):
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with open(self.statefile_path) as statefile:
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state = json.load(statefile)
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else:
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state = {}
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state[sys.prefix] = {
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"last_check": current_time.strftime(SELFCHECK_DATE_FMT),
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"pypi_version": pypi_version,
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}
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with open(self.statefile_path, "w") as statefile:
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json.dump(state, statefile, sort_keys=True,
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separators=(",", ":"))
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def load_selfcheck_statefile():
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if running_under_virtualenv():
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return VirtualenvSelfCheckState()
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else:
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return GlobalSelfCheckState()
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def pip_version_check(session):
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"""Check for an update for pip.
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Limit the frequency of checks to once per week. State is stored either in
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the active virtualenv or in the user's USER_CACHE_DIR keyed off the prefix
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of the pip script path.
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"""
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installed_version = get_installed_version("pip")
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if installed_version is None:
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return
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pip_version = packaging_version.parse(installed_version)
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pypi_version = None
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try:
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state = load_selfcheck_statefile()
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current_time = datetime.datetime.utcnow()
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# Determine if we need to refresh the state
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if "last_check" in state.state and "pypi_version" in state.state:
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last_check = datetime.datetime.strptime(
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state.state["last_check"],
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SELFCHECK_DATE_FMT
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)
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if total_seconds(current_time - last_check) < 7 * 24 * 60 * 60:
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pypi_version = state.state["pypi_version"]
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# Refresh the version if we need to or just see if we need to warn
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if pypi_version is None:
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resp = session.get(
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PyPI.pip_json_url,
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headers={"Accept": "application/json"},
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)
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resp.raise_for_status()
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pypi_version = [
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v for v in sorted(
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list(resp.json()["releases"]),
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key=packaging_version.parse,
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)
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if not packaging_version.parse(v).is_prerelease
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][-1]
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# save that we've performed a check
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state.save(pypi_version, current_time)
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remote_version = packaging_version.parse(pypi_version)
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# Determine if our pypi_version is older
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if (pip_version < remote_version and
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pip_version.base_version != remote_version.base_version):
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# Advise "python -m pip" on Windows to avoid issues
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# with overwriting pip.exe.
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if WINDOWS:
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pip_cmd = "python -m pip"
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else:
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pip_cmd = "pip"
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logger.warning(
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"You are using pip version %s, however version %s is "
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"available.\nYou should consider upgrading via the "
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"'%s install --upgrade pip' command.",
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pip_version, pypi_version, pip_cmd
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)
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except Exception:
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logger.debug(
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"There was an error checking the latest version of pip",
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exc_info=True,
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)
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