def get_user_required_packages(app_dir_path):
"""Look for a requirements.txt file. If found, parse the file and return
a list of eggs.
"""
requirements_file = os.path.join(app_dir_path, "requirements.txt")
if os.path.exists(requirements_file):
logger.debug("Found requirements.txt file")
return parse_requirements.parse(requirements_file)
else:
logger.debug("Did not find requirements.txt file")
return []
def install_requirements(python_virtualenv_dir, requirements_file,
package_cache_dir=None):
if len(package_data.problem_packages)>0:
# If there are packages known to cause problems, we check that list
# against the requirements file and stop everything if a problematic
# package is found.
packages = parse(requirements_file,
parse_version_constraints=False)
for pkg in packages:
lpkg = pkg.lower()
if lpkg in package_data.problem_packages:
raise RequestedPackageError(
"Package '%s' is known to cause problems with Engage deployments. Please remove it from your requirements.txt file (or comment it out)." %
pkg)
pip = os.path.abspath(os.path.join(os.path.expanduser(python_virtualenv_dir), "bin/pip"))
if not os.path.exists(pip):
raise RequestedPackageError("Could not find pip executable")
req_file_path = os.path.abspath(os.path.expanduser(requirements_file))
if package_cache_dir:
# If the package cache is present, we read through the requirements file to see
# if we have any matches. If matches are found, we install them directly. We'll
# still run pip on the requirements file at the end to catch anything that is missing
# or the wrong version.
package_cache_dir = os.path.abspath(os.path.expanduser(package_cache_dir))
logger.debug("Checking for packages in directory %s" % package_cache_dir)
if os.path.exists(package_cache_dir):
cache_files = os.listdir(package_cache_dir)
package_files = get_local_files_matching_requirements(requirements_file,
cache_files)
for pkg_file in package_files:
pkg_path = os.path.join(package_cache_dir, pkg_file)
logger.debug("Installing %s from package cache" % pkg_file)
cmd = [pip, "install", pkg_path]
try:
check_run_and_log_program(cmd, None, logger)
except Exception, e:
logger.exception("Problem in running pip on package %s. Command was '%s', error was %s" % (pkg_file, ' '.join(cmd), str(e)))
raise PipError("Problem in running pip on package %s. Command was '%s', error was %s" % (pkg_file, ' '.join(cmd), str(e)))
