multi-user/multi_user/environment.py

88 lines
2.1 KiB
Python

import collections
import logging
import os
import subprocess
import sys
from pathlib import Path
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
CONFIG_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), "config")
CONFIG = os.path.join(CONFIG_DIR, "app.yaml")
THIRD_PARTY = os.path.join(os.path.dirname(os.path.abspath(__file__)), "libs")
CACHE_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), "cache")
PYTHON_PATH = None
SUBPROCESS_DIR = None
rtypes = []
def load_config():
import yaml
try:
with open(CONFIG, 'r') as config_file:
return yaml.safe_load(config_file)
except FileNotFoundError:
logger.info("no config")
return {}
def save_config(config):
import yaml
logger.info("saving config")
with open(CONFIG, 'w') as outfile:
yaml.dump(config, outfile, default_flow_style=False)
def module_can_be_imported(name):
try:
__import__(name)
return True
except ModuleNotFoundError:
return False
def get_package_install_directory():
for path in sys.path:
if os.path.basename(path) in ("dist-packages", "site-packages"):
return path
def install_pip():
# pip can not necessarily be imported into Blender after this
get_pip_path = Path(__file__).parent / "libs" / "get-pip.py"
subprocess.run([str(PYTHON_PATH), str(get_pip_path)], cwd=SUBPROCESS_DIR)
def install_package(name):
target = get_package_install_directory()
subprocess.run([str(PYTHON_PATH), "-m", "pip", "install",
name, '--target', target], cwd=SUBPROCESS_DIR)
def check_dir(dir):
if not os.path.exists(dir):
os.makedirs(dir)
def setup(dependencies, python_path):
global PYTHON_PATH, SUBPROCESS_DIR
PYTHON_PATH = Path(python_path)
SUBPROCESS_DIR = PYTHON_PATH.parent
check_dir(CACHE_DIR)
check_dir(CONFIG_DIR)
if not module_can_be_imported("pip"):
install_pip()
for module_name, package_name in dependencies:
if not module_can_be_imported(module_name):
install_package(package_name)