126 lines
3.4 KiB
Python
Executable file
126 lines
3.4 KiB
Python
Executable file
import glob
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import os
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import pathlib
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import subprocess as sp
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import time
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from uuid import uuid4
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from ucloud.filescanner import logger
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from ucloud.config import env_vars, etcd_client
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def getxattr(file, attr):
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"""Get specified user extended attribute (arg:attr) of a file (arg:file)"""
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try:
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attr = "user." + attr
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value = sp.check_output(['getfattr', file,
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'--name', attr,
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'--only-values',
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'--absolute-names'], stderr=sp.DEVNULL)
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value = value.decode("utf-8")
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except sp.CalledProcessError as e:
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logger.exception(e)
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value = None
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return value
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def setxattr(file, attr, value):
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"""Set specified user extended attribute (arg:attr) equal to (arg:value)
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of a file (arg:file)"""
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attr = "user." + attr
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sp.check_output(['setfattr', file,
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'--name', attr,
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'--value', str(value)])
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def sha512sum(file: str):
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"""Use sha512sum utility to compute sha512 sum of arg:file
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IF arg:file does not exists:
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raise FileNotFoundError exception
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ELSE IF sum successfully computer:
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return computed sha512 sum
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ELSE:
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return None
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"""
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if not isinstance(file, str): raise TypeError
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try:
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output = sp.check_output(["sha512sum", file], stderr=sp.PIPE)
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except sp.CalledProcessError as e:
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error = e.stderr.decode("utf-8")
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if "No such file or directory" in error:
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raise FileNotFoundError from None
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else:
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output = output.decode("utf-8").strip()
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output = output.split(" ")
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return output[0]
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return None
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try:
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sp.check_output(['which', 'getfattr'])
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sp.check_output(['which', 'setfattr'])
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except Exception as e:
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logger.exception(e)
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print('Make sure you have getfattr and setfattr available')
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exit(1)
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def main():
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BASE_DIR = env_vars.get("BASE_DIR")
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FILE_PREFIX = env_vars.get("FILE_PREFIX")
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# Recursively Get All Files and Folder below BASE_DIR
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files = glob.glob("{}/**".format(BASE_DIR), recursive=True)
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# Retain only Files
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files = list(filter(os.path.isfile, files))
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untracked_files = list(
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filter(lambda f: not bool(getxattr(f, "user.utracked")), files)
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)
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tracked_files = list(
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filter(lambda f: f not in untracked_files, files)
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)
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for file in untracked_files:
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file_id = uuid4()
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# Get Username
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owner = pathlib.Path(file).parts[3]
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# Get Creation Date of File
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# Here, we are assuming that ctime is creation time
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# which is mostly not true.
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creation_date = time.ctime(os.stat(file).st_ctime)
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# Get File Size
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size = os.path.getsize(file)
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# Compute sha512 sum
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sha_sum = sha512sum(file)
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# File Path excluding base and username
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file_path = pathlib.Path(file).parts[4:]
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file_path = os.path.join(*file_path)
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# Create Entry
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entry_key = os.path.join(FILE_PREFIX, str(file_id))
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entry_value = {
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"filename": file_path,
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"owner": owner,
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"sha512sum": sha_sum,
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"creation_date": creation_date,
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"size": size
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}
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print("Tracking {}".format(file))
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# Insert Entry
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etcd_client.put(entry_key, entry_value, value_in_json=True)
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setxattr(file, "user.utracked", True)
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if __name__ == "__main__":
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main()
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