def _check_pip_setup(self, pip_command):
pip_command_str = pip_command
if isinstance(pip_command_str, list):
pip_command_str = " ".join(pip_command_str)
if not self.ignore_cache and pip_command_str in _cache["setup"]:
self._logger.debug(
"Using cached pip setup information for {}".format(
pip_command_str))
return _cache["setup"][pip_command_str]
# This is horribly ugly and I'm sorry...
#
# While we can figure out the install directory, if that's writable and if a virtual environment
# is active for pip that belongs to our sys.executable python instance by just checking some
# variables, we can't for stuff like third party software we allow to update via the software
# update plugin.
#
# What we do instead for these situations is try to install (and of course uninstall) the
# testballoon dummy package, which collects that information for us. For pip <= 7 we could
# have the testballoon provide us with the info needed through stdout, if pip was called
# with --verbose anything printed to stdout within setup.py would be output. Pip 8 managed
# to break this mechanism. Any (!) output within setup.py appears to be suppressed now, and
# no combination of --log and multiple --verbose or -v arguments could get it to bring the
# output back.
#
# So here's what we do now instead. Our sarge call sets an environment variable
# "TESTBALLOON_OUTPUT" that points to a temporary file. If the testballoon sees that
# variable set, it opens the file and writes to it the output it so far printed on stdout.
# We then open the file and read in the data that way.
#
# Yeah, I'm not happy with that either. But as long as there's no way to otherwise figure
# out for a generic pip command whether OctoPrint can even install anything with that
# and if so how, well, that's how we'll have to do things.
import os
testballoon = os.path.join(os.path.realpath(os.path.dirname(__file__)),
"piptestballoon")
from octoprint.util import temppath
with temppath() as testballoon_output_file:
sarge_command = self.to_sarge_command(pip_command, "install", ".")
try:
# our testballoon is no real package, so this command will fail - that's ok though,
# we only need the output produced within the pip environment
sarge.run(sarge_command,
stdout=sarge.Capture(),
stderr=sarge.Capture(),
cwd=testballoon,
env=dict(TESTBALLOON_OUTPUT=testballoon_output_file))
except:
self._logger.exception(
"Error while trying to install testballoon to figure out pip setup"
)
return False, False, False, None
data = dict()
with open(testballoon_output_file) as f:
for line in f:
key, value = line.split("=", 2)
data[key] = value
install_dir_str = data.get("PIP_INSTALL_DIR", None)
virtual_env_str = data.get("PIP_VIRTUAL_ENV", None)
writable_str = data.get("PIP_WRITABLE", None)
if install_dir_str is not None and virtual_env_str is not None and writable_str is not None:
install_dir = install_dir_str.strip()
virtual_env = virtual_env_str.strip() == "True"
writable = writable_str.strip() == "True"
can_use_user_flag = not virtual_env and site.ENABLE_USER_SITE
# ok, enable user flag, virtual env yes/no, installation dir
result = writable or can_use_user_flag, \
not writable and can_use_user_flag, \
virtual_env, \
install_dir
_cache["setup"][pip_command_str] = result
return result
else:
self._logger.debug(
"Could not detect desired output from testballoon install, got this instead: {!r}"
.format(data))
return False, False, False, None
def _check_pip_setup(self, pip_command):
pip_command_str = pip_command
if isinstance(pip_command_str, list):
pip_command_str = " ".join(pip_command_str)
with _cache_mutex:
if not self.ignore_cache and pip_command_str in _cache["setup"]:
self._logger.debug("Using cached pip setup information for {}".format(pip_command_str))
return _cache["setup"][pip_command_str]
# This is horribly ugly and I'm sorry...
#
# While we can figure out the install directory, if that's writable and if a virtual environment
# is active for pip that belongs to our sys.executable python instance by just checking some
# variables, we can't for stuff like third party software we allow to update via the software
# update plugin.
#
# What we do instead for these situations is try to install (and of course uninstall) the
# testballoon dummy package, which collects that information for us. For pip <= 7 we could
# have the testballoon provide us with the info needed through stdout, if pip was called
# with --verbose anything printed to stdout within setup.py would be output. Pip 8 managed
# to break this mechanism. Any (!) output within setup.py appears to be suppressed now, and
# no combination of --log and multiple --verbose or -v arguments could get it to bring the
# output back.
#
# So here's what we do now instead. Our sarge call sets an environment variable
# "TESTBALLOON_OUTPUT" that points to a temporary file. If the testballoon sees that
# variable set, it opens the file and writes to it the output it so far printed on stdout.
# We then open the file and read in the data that way.
#
# Yeah, I'm not happy with that either. But as long as there's no way to otherwise figure
# out for a generic pip command whether OctoPrint can even install anything with that
# and if so how, well, that's how we'll have to do things.
import os
testballoon = os.path.join(os.path.realpath(os.path.dirname(__file__)), "piptestballoon")
from octoprint.util import temppath
with temppath() as testballoon_output_file:
sarge_command = self.to_sarge_command(pip_command, "install", ".")
try:
# our testballoon is no real package, so this command will fail - that's ok though,
# we only need the output produced within the pip environment
sarge.run(sarge_command,
stdout=sarge.Capture(),
stderr=sarge.Capture(),
cwd=testballoon,
env=dict(TESTBALLOON_OUTPUT=testballoon_output_file))
except:
self._logger.exception("Error while trying to install testballoon to figure out pip setup")
return False, False, False, None
data = dict()
with open(testballoon_output_file) as f:
for line in f:
key, value = line.split("=", 2)
data[key] = value
install_dir_str = data.get("PIP_INSTALL_DIR", None)
virtual_env_str = data.get("PIP_VIRTUAL_ENV", None)
writable_str = data.get("PIP_WRITABLE", None)
if install_dir_str is not None and virtual_env_str is not None and writable_str is not None:
install_dir = install_dir_str.strip()
virtual_env = virtual_env_str.strip() == "True"
writable = writable_str.strip() == "True"
can_use_user_flag = not virtual_env and site.ENABLE_USER_SITE
ok = writable or can_use_user_flag
user_flag = not writable and can_use_user_flag
self._logger.info("pip installs to {}, --user flag needed => {}, "
"virtual env => {}".format(install_dir,
"yes" if user_flag else "no",
"yes" if virtual_env else "no"))
# ok, enable user flag, virtual env yes/no, installation dir
result = ok, user_flag, virtual_env, install_dir
_cache["setup"][pip_command_str] = result
return result
else:
self._logger.debug("Could not detect desired output from testballoon install, got this instead: {!r}".format(data))
return False, False, False, None