Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/pip/_internal/utils/outdated.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1
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1 from __future__ import absolute_import
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2
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3 import datetime
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4 import json
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5 import logging
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6 import os.path
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7 import sys
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8
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9 from pip._vendor import lockfile, pkg_resources
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10 from pip._vendor.packaging import version as packaging_version
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11
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12 from pip._internal.cli.cmdoptions import make_search_scope
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13 from pip._internal.index import PackageFinder
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14 from pip._internal.models.selection_prefs import SelectionPreferences
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15 from pip._internal.utils.compat import WINDOWS
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16 from pip._internal.utils.filesystem import check_path_owner
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17 from pip._internal.utils.misc import ensure_dir, get_installed_version
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18 from pip._internal.utils.packaging import get_installer
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19 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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20
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21 if MYPY_CHECK_RUNNING:
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22 import optparse
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23 from typing import Any, Dict
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24 from pip._internal.download import PipSession
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25
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26
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27 SELFCHECK_DATE_FMT = "%Y-%m-%dT%H:%M:%SZ"
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28
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29
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30 logger = logging.getLogger(__name__)
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31
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32
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33 class SelfCheckState(object):
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34 def __init__(self, cache_dir):
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35 # type: (str) -> None
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36 self.state = {} # type: Dict[str, Any]
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37 self.statefile_path = None
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38
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39 # Try to load the existing state
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40 if cache_dir:
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41 self.statefile_path = os.path.join(cache_dir, "selfcheck.json")
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42 try:
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43 with open(self.statefile_path) as statefile:
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44 self.state = json.load(statefile)[sys.prefix]
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45 except (IOError, ValueError, KeyError):
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46 # Explicitly suppressing exceptions, since we don't want to
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47 # error out if the cache file is invalid.
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48 pass
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49
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50 def save(self, pypi_version, current_time):
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51 # type: (str, datetime.datetime) -> None
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52 # If we do not have a path to cache in, don't bother saving.
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53 if not self.statefile_path:
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54 return
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55
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56 # Check to make sure that we own the directory
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57 if not check_path_owner(os.path.dirname(self.statefile_path)):
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58 return
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59
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60 # Now that we've ensured the directory is owned by this user, we'll go
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61 # ahead and make sure that all our directories are created.
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62 ensure_dir(os.path.dirname(self.statefile_path))
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63
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64 # Attempt to write out our version check file
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65 with lockfile.LockFile(self.statefile_path):
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66 if os.path.exists(self.statefile_path):
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67 with open(self.statefile_path) as statefile:
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68 state = json.load(statefile)
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69 else:
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70 state = {}
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71
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72 state[sys.prefix] = {
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73 "last_check": current_time.strftime(SELFCHECK_DATE_FMT),
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74 "pypi_version": pypi_version,
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75 }
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76
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77 with open(self.statefile_path, "w") as statefile:
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78 json.dump(state, statefile, sort_keys=True,
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79 separators=(",", ":"))
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80
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81
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82 def was_installed_by_pip(pkg):
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83 # type: (str) -> bool
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84 """Checks whether pkg was installed by pip
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85
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86 This is used not to display the upgrade message when pip is in fact
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87 installed by system package manager, such as dnf on Fedora.
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88 """
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89 try:
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90 dist = pkg_resources.get_distribution(pkg)
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91 return "pip" == get_installer(dist)
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92 except pkg_resources.DistributionNotFound:
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93 return False
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94
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95
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96 def pip_version_check(session, options):
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97 # type: (PipSession, optparse.Values) -> None
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98 """Check for an update for pip.
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99
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100 Limit the frequency of checks to once per week. State is stored either in
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101 the active virtualenv or in the user's USER_CACHE_DIR keyed off the prefix
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102 of the pip script path.
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103 """
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104 installed_version = get_installed_version("pip")
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105 if not installed_version:
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106 return
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107
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108 pip_version = packaging_version.parse(installed_version)
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109 pypi_version = None
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110
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111 try:
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112 state = SelfCheckState(cache_dir=options.cache_dir)
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113
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114 current_time = datetime.datetime.utcnow()
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115 # Determine if we need to refresh the state
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116 if "last_check" in state.state and "pypi_version" in state.state:
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117 last_check = datetime.datetime.strptime(
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118 state.state["last_check"],
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119 SELFCHECK_DATE_FMT
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120 )
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121 if (current_time - last_check).total_seconds() < 7 * 24 * 60 * 60:
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122 pypi_version = state.state["pypi_version"]
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123
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124 # Refresh the version if we need to or just see if we need to warn
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125 if pypi_version is None:
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126 # Lets use PackageFinder to see what the latest pip version is
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127 search_scope = make_search_scope(options, suppress_no_index=True)
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128
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129 # Pass allow_yanked=False so we don't suggest upgrading to a
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130 # yanked version.
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131 selection_prefs = SelectionPreferences(
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132 allow_yanked=False,
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133 allow_all_prereleases=False, # Explicitly set to False
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134 )
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135
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136 finder = PackageFinder.create(
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137 search_scope=search_scope,
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138 selection_prefs=selection_prefs,
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139 trusted_hosts=options.trusted_hosts,
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140 session=session,
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141 )
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142 candidate = finder.find_candidates("pip").get_best()
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143 if candidate is None:
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144 return
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145 pypi_version = str(candidate.version)
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146
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147 # save that we've performed a check
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148 state.save(pypi_version, current_time)
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149
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150 remote_version = packaging_version.parse(pypi_version)
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151
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152 local_version_is_older = (
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153 pip_version < remote_version and
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154 pip_version.base_version != remote_version.base_version and
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155 was_installed_by_pip('pip')
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156 )
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157
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158 # Determine if our pypi_version is older
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159 if not local_version_is_older:
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160 return
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161
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162 # Advise "python -m pip" on Windows to avoid issues
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163 # with overwriting pip.exe.
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164 if WINDOWS:
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165 pip_cmd = "python -m pip"
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166 else:
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167 pip_cmd = "pip"
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168 logger.warning(
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169 "You are using pip version %s, however version %s is "
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170 "available.\nYou should consider upgrading via the "
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171 "'%s install --upgrade pip' command.",
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172 pip_version, pypi_version, pip_cmd
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173 )
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174 except Exception:
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175 logger.debug(
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176 "There was an error checking the latest version of pip",
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177 exc_info=True,
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178 )