Files
bearhub/fpakman/core/worker.py
2019-07-10 11:00:38 -03:00

120 lines
4.3 KiB
Python

import traceback
from io import StringIO
from threading import Thread
from typing import List
import requests
from colorama import Fore
from fpakman.core.constants import FLATHUB_API_URL, FLATHUB_URL
from fpakman.core.model import FlatpakApplication, ApplicationStatus
from fpakman.util.cache import Cache
class FlatpakAsyncDataLoader(Thread):
def __init__(self, http_session, api_cache: Cache, attempts: int = 3):
super(FlatpakAsyncDataLoader, self).__init__(daemon=True)
self.apps = []
self.http_session = http_session
self.attempts = attempts
self.api_cache = api_cache
self.id_ = '{}#{}'.format(self.__class__.__name__, id(self))
self.stop = False
def log_msg(self, msg: str, color: int = None):
final_msg = StringIO()
if color:
final_msg.write(str(color))
final_msg.write('[{}] '.format(self.id_))
final_msg.write(msg)
if color:
final_msg.write(Fore.RESET)
final_msg.seek(0)
print(final_msg.read())
def run(self):
while True:
if not self.apps and self.stop:
break # stop working
else:
if self.apps:
app = self.apps[0]
app.status = ApplicationStatus.LOADING_DATA
for _ in range(0, self.attempts):
try:
res = self.http_session.get('{}/apps/{}'.format(FLATHUB_API_URL, app.base_data.id), timeout=30)
if res.status_code == 200 and res.text:
data = res.json()
if not app.base_data.version:
app.base_data.version = data.get('version')
app.base_data.description = data.get('description', data.get('summary', None))
app.base_data.icon_url = data.get('iconMobileUrl', None)
app.base_data.latest_version = data.get('currentReleaseVersion', app.base_data.version)
if app.base_data.icon_url and app.base_data.icon_url.startswith('/'):
app.base_data.icon_url = FLATHUB_URL + app.base_data.icon_url
self.api_cache.add(app.base_data.id, {
'description': app.base_data.description,
'icon_url': app.base_data.icon_url,
'latest_version': app.base_data.latest_version,
'version': app.base_data.version
})
app.status = ApplicationStatus.READY
break
else:
self.log_msg("Could not retrieve app data for id '{}'. Server response: {}. Body: {}".format(app.base_data.id, res.status_code, res.content.decode()), Fore.RED)
except:
self.log_msg("Could not retrieve app data for id '{}'".format(app.base_data.id), Fore.YELLOW)
traceback.print_exc()
del self.apps[0]
def add(self, app: FlatpakApplication):
self.apps.append(app)
def current_load(self):
return len(self.apps)
class FlatpakAsyncDataLoaderManager:
def __init__(self, api_cache: Cache, worker_load: int = 1, workers: List[FlatpakAsyncDataLoader] = []):
self.worker_load = worker_load
self.current_workers = workers
self.http_session = requests.Session()
self.api_cache = api_cache
def load(self, app: FlatpakApplication):
available_workers = [w for w in self.current_workers if w.current_load() < self.worker_load]
if available_workers:
worker = available_workers[0]
else: # new worker
worker = FlatpakAsyncDataLoader(http_session=self.http_session,
api_cache=self.api_cache)
worker.start()
self.current_workers.append(worker)
worker.add(app)
def stop_current_workers(self):
for w in self.current_workers:
w.stop = True
self.current_workers = []