mirror of https://github.com/commaai/openpilot.git
53 lines
1.7 KiB
Python
53 lines
1.7 KiB
Python
import os
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import shutil
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import uuid
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from typing import Optional
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from openpilot.common.params import Params
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from openpilot.system.hardware.hw import Paths
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from openpilot.system.hardware.hw import DEFAULT_DOWNLOAD_CACHE_ROOT
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class OpenpilotPrefix:
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def __init__(self, prefix: Optional[str] = None, clean_dirs_on_exit: bool = True, shared_download_cache: bool = False):
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self.prefix = prefix if prefix else str(uuid.uuid4().hex[0:15])
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self.msgq_path = os.path.join('/dev/shm', self.prefix)
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self.clean_dirs_on_exit = clean_dirs_on_exit
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self.shared_download_cache = shared_download_cache
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def __enter__(self):
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self.original_prefix = os.environ.get('OPENPILOT_PREFIX', None)
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os.environ['OPENPILOT_PREFIX'] = self.prefix
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try:
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os.mkdir(self.msgq_path)
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except FileExistsError:
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pass
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os.makedirs(Paths.log_root(), exist_ok=True)
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if self.shared_download_cache:
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os.environ["COMMA_CACHE"] = DEFAULT_DOWNLOAD_CACHE_ROOT
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return self
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def __exit__(self, exc_type, exc_obj, exc_tb):
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if self.clean_dirs_on_exit:
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self.clean_dirs()
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try:
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del os.environ['OPENPILOT_PREFIX']
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if self.original_prefix is not None:
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os.environ['OPENPILOT_PREFIX'] = self.original_prefix
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except KeyError:
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pass
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return False
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def clean_dirs(self):
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symlink_path = Params().get_param_path()
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if os.path.exists(symlink_path):
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shutil.rmtree(os.path.realpath(symlink_path), ignore_errors=True)
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os.remove(symlink_path)
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shutil.rmtree(self.msgq_path, ignore_errors=True)
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shutil.rmtree(Paths.log_root(), ignore_errors=True)
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if not os.environ.get("COMMA_CACHE", False):
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shutil.rmtree(Paths.download_cache_root(), ignore_errors=True)
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shutil.rmtree(Paths.comma_home(), ignore_errors=True)
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