mirror of
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you-n-g
4f484e009a
* Successfully logging the trace * Start debugging & Add policy file * Support loading sessions * Add docs * Add tqdm
143 lines
4.9 KiB
Python
143 lines
4.9 KiB
Python
import re
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import json
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import pickle
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from datetime import datetime, timezone
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from pathlib import Path
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from typing import Literal, Generator
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from .base import Message, Storage
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class FileStorage(Storage):
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"""
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The info are logginged to the file systems
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TODO: describe the storage format
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"""
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def __init__(self, path: str = "./log/") -> None:
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self.path = Path(path)
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self.path.mkdir(parents=True, exist_ok=True)
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def log(
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self,
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obj: object,
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name: str = "",
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save_type: Literal["json", "text", "pkl"] = "text",
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timestamp: datetime | None = None,
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) -> Path:
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# TODO: We can remove the timestamp after we implement PipeLog
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if timestamp is None:
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timestamp = datetime.now(timezone.utc)
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else:
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timestamp = timestamp.astimezone(timezone.utc)
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cur_p = self.path / name.replace(".", "/")
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cur_p.mkdir(parents=True, exist_ok=True)
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path = cur_p / f"{timestamp.strftime('%Y-%m-%d_%H-%M-%S-%f')}.log"
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if save_type == "json":
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path = path.with_suffix(".json")
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with path.open("w") as f:
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try:
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json.dump(obj, f)
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except TypeError:
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json.dump(json.loads(str(obj)), f)
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return path
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elif save_type == "pkl":
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path = path.with_suffix(".pkl")
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with path.open("wb") as f:
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pickle.dump(obj, f)
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return path
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elif save_type == "text":
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obj = str(obj)
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with path.open("w") as f:
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f.write(obj)
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return path
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log_pattern = re.compile(
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r"(?P<timestamp>\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3}) \| "
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r"(?P<level>DEBUG|INFO|WARNING|ERROR|CRITICAL) *\| "
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r"(?P<caller>.+:.+:\d+) - "
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)
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def iter_msg(self, watch: bool = False) -> Generator[Message, None, None]:
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msg_l = []
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for file in self.path.glob("**/*.log"):
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tag = '.'.join(str(file.relative_to(self.path)).replace("/", ".").split(".")[:-3])
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pid = file.parent.name
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with file.open("r") as f:
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content = f.read()
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matches, next_matches = self.log_pattern.finditer(content), self.log_pattern.finditer(content)
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next_match = next(next_matches, None)
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# NOTE: the content will be the text between `match` and `next_match`
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for match in matches:
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next_match = next(next_matches, None)
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timestamp_str = match.group("timestamp")
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timestamp = datetime.strptime(timestamp_str, "%Y-%m-%d %H:%M:%S.%f").replace(tzinfo=timezone.utc)
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level = match.group("level")
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caller = match.group("caller")
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# Extract the message content
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message_start = match.end()
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message_end = next_match.start() if next_match else len(content)
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message_content = content[message_start:message_end].strip()
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m = Message(
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tag=tag,
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level=level,
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timestamp=timestamp,
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caller=caller,
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pid_trace=pid,
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content=message_content
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)
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if "Logging object in" in m.content:
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absolute_p = m.content.split("Logging object in ")[1]
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relative_p = "." + absolute_p.split(self.path.name)[1]
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pkl_path = self.path / relative_p
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with pkl_path.open("rb") as f:
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m.content = pickle.load(f)
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msg_l.append(m)
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msg_l.sort(key=lambda x: x.timestamp)
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for m in msg_l:
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yield m
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def truncate(self, time: datetime) -> None:
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# any message later than `time` will be removed
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for file in self.path.glob("**/*.log"):
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with file.open("r") as f:
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content = f.read()
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new_content = ""
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matches, next_matches = self.log_pattern.finditer(content), self.log_pattern.finditer(content)
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next_match = next(next_matches, None)
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for match in matches:
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next_match = next(next_matches, None)
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timestamp_str = match.group("timestamp")
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timestamp = datetime.strptime(timestamp_str, "%Y-%m-%d %H:%M:%S.%f").replace(tzinfo=timezone.utc)
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log_start = match.start()
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log_end = next_match.start() if next_match else len(content)
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msg = content[match.end():log_end].strip()
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if timestamp > time:
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if "Logging object in" in msg:
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absolute_p = msg.split("Logging object in ")[1]
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p = Path(absolute_p)
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p.unlink()
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continue
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new_content += content[log_start:log_end]
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with file.open("w") as f:
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f.write(new_content)
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