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PowerTools/main.py

36 lines
1.1 KiB
Python

import pathlib
import subprocess
import asyncio
import os
HOME_DIR = str(pathlib.Path(os.getcwd()).parent.parent.resolve())
PARENT_DIR = str(pathlib.Path(__file__).parent.resolve())
class Plugin:
backend_proc = None
# Asyncio-compatible long-running code, executed in a task when the plugin is loaded
async def _main(self):
# startup
print("PowerTools starting...")
env_proc = dict(os.environ)
if "LD_LIBRARY_PATH" in env_proc:
env_proc["LD_LIBRARY_PATH"] += ":"+PARENT_DIR+"/bin"
else:
env_proc["LD_LIBRARY_PATH"] = ":"+PARENT_DIR+"/bin"
self.backend_proc = subprocess.Popen(
[PARENT_DIR + "/bin/backend"],
env = env_proc)
while True:
await asyncio.sleep(1)
async def _unload(self):
# shutdown
print("PowerTools unloading...")
if self.backend_proc is not None:
self.backend_proc.terminate()
try:
self.backend_proc.wait(timeout=5) # 5 seconds timeout
except subprocess.TimeoutExpired:
self.backend_proc.kill()
self.backend_proc = None