0fa60ebc45
* Rename archives to orgs and aid to oid on backend * Rename archive to org and aid to oid in frontend * Remove translation artifact * Rename team -> organization * Add database migrations and run once on startup * This commit also applies the new by_one_worker decorator to other asyncio tasks to prevent heavy tasks from being run in each worker. * Run black, pylint, and husky via pre-commit * Set db version and use in migrations * Update and prepare database in single task * Migrate k8s configmaps
48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
"""
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Unique Worker exposed as decorator by_one_worker
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"""
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from pathlib import Path
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import os
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from functools import cached_property
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class UniqueWorker:
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"""Class to run async tasks in single worker only."""
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def __init__(self, path):
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self.path = Path(path)
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self.pid = str(os.getpid())
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self.set_id()
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def set_id(self):
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"""Create path to pid file and write to pid."""
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if self.path.exists():
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self.path.parents[0].mkdir(parents=True, exist_ok=True)
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with open(self.path, "w", encoding="utf-8") as pid_file:
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pid_file.write(self.pid)
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@cached_property
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def is_assigned(self):
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"""Check if worker has been assigned to unique worker."""
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with open(self.path, "r", encoding="utf-8") as pid_file:
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assigned_worker = pid_file.read()
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return assigned_worker == self.pid
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def by_one_worker(worker_pid_path):
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"""Decorator which runs function in unique worker."""
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unique_worker = UniqueWorker(worker_pid_path)
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def deco(pid_path):
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def wrapped(*args, **kwargs):
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if not unique_worker.is_assigned:
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return ""
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return pid_path(*args, **kwargs)
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return wrapped
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return deco
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