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Pip: use 'pip list' when available for package list (#4644)

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* Pip: handle parsing different pip commands

* Pip: use 'pip list' when available

* Pip: explicitly check which command is used

* Pip: add error checking when fetching packages
This commit is contained in:
Rob Cutmore 2016-09-20 10:05:08 -04:00 committed by Toshio Kuratomi
parent 20e08b2cdf
commit 12a7027c49
1 changed files with 39 additions and 17 deletions
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56
packaging/language/pip.py
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@ -204,12 +204,41 @@ def _get_full_name(name, version=None):
resp = name + '==' + version
return resp
def _is_present(name, version, installed_pkgs):
for pkg in installed_pkgs:
if '==' not in pkg:
continue
[pkg_name, pkg_version] = pkg.split('==')
def _get_packages(module, pip, chdir):
'''Return results of pip command to get packages.'''
# Try 'pip list' command first.
command = '%s list' % pip
rc, out, err = module.run_command(command, cwd=chdir)
# If there was an error (pip version too old) then use 'pip freeze'.
if rc != 0:
command = '%s freeze' % pip
rc, out, err = module.run_command(command, cwd=chdir)
if rc != 0:
_fail(module, command, out, err)
return (command, out, err)
def _is_present(name, version, installed_pkgs, pkg_command):
'''Return whether or not package is installed.'''
for pkg in installed_pkgs:
# Package listing will be different depending on which pip
# command was used ('pip list' vs. 'pip freeze').
if 'list' in pkg_command:
pkg = pkg.replace('(', '').replace(')', '')
if ',' in pkg:
pkg_name, pkg_version, _ = pkg.replace(',', '').split(' ')
else:
pkg_name, pkg_version = pkg.split(' ')
elif 'freeze' in pkg_command:
if '==' in pkg:
pkg_name, pkg_version = pkg.split('==')
else:
continue
else:
continue
if pkg_name == name and (version is None or version == pkg_version):
return True
@ -217,7 +246,6 @@ def _is_present(name, version, installed_pkgs):
return False
def _get_pip(module, env=None, executable=None):
# On Debian and Ubuntu, pip is pip.
# On Fedora18 and up, pip is python-pip.
@ -400,12 +428,7 @@ def main():
elif has_vcs:
module.exit_json(changed=True)
freeze_cmd = '%s freeze' % pip
rc, out_pip, err_pip = module.run_command(freeze_cmd, cwd=chdir)
if rc != 0:
module.exit_json(changed=True)
pkg_cmd, out_pip, err_pip = _get_packages(module, pip, chdir)
out += out_pip
err += err_pip
@ -413,15 +436,14 @@ def main():
changed = False
if name:
for pkg in name:
is_present = _is_present(pkg, version, out.split())
is_present = _is_present(pkg, version, out.split('\n'), pkg_cmd)
if (state == 'present' and not is_present) or (state == 'absent' and is_present):
changed = True
break
module.exit_json(changed=changed, cmd=freeze_cmd, stdout=out, stderr=err)
module.exit_json(changed=changed, cmd=pkg_cmd, stdout=out, stderr=err)
if requirements or has_vcs:
freeze_cmd = '%s freeze' % pip
out_freeze_before = module.run_command(freeze_cmd, cwd=chdir)[1]
_, out_freeze_before, _ = _get_packages(module, pip, chdir)
else:
out_freeze_before = None
@ -443,7 +465,7 @@ def main():
if out_freeze_before is None:
changed = 'Successfully installed' in out_pip
else:
out_freeze_after = module.run_command(freeze_cmd, cwd=chdir)[1]
_, out_freeze_after, _ = _get_packages(module, pip, chdir)
changed = out_freeze_before != out_freeze_after
module.exit_json(changed=changed, cmd=cmd, name=name, version=version,