uncloud/filescanner/main.py

109 lines
2.6 KiB
Python
Executable file

import os
import glob
import pathlib
import time
import hashlib
import subprocess as sp
from decouple import config
from etcd3_wrapper import Etcd3Wrapper
from uuid import uuid4
def getxattr(file, attr):
try:
attr = "user." + attr
value = sp.check_output(['getfattr', file,
'--name', attr,
'--only-values',
'--absolute-names'])
value = value.decode("utf-8")
except sp.CalledProcessError:
value = None
return value
def setxattr(file, attr, value):
attr = "user." + attr
sp.check_output(['setfattr', file,
'--name', attr,
'--value', str(value)])
def sha512sum(filename):
_sum = hashlib.sha512()
buffer_size = 2**16
with open(filename, "rb") as f:
while True:
data = f.read(buffer_size)
if not data:
break
_sum.update(data)
return _sum.hexdigest()
try:
sp.check_output(['which', 'getfattr'])
sp.check_output(['which', 'setfattr'])
except Exception as e:
print(e)
print('Make sure you have getfattr and setfattr available')
exit(1)
BASE_DIR = config("BASE_DIR")
FILE_PREFIX = config("FILE_PREFIX")
etcd_client = Etcd3Wrapper(host=config("ETCD_URL"))
# Recursively Get All Files and Folder below BASE_DIR
files = glob.glob("{}/**".format(BASE_DIR), recursive=True)
# Retain only Files
files = list(filter(os.path.isfile, files))
untracked_files = list(
filter(lambda f: not bool(getxattr(f, "user.utracked")), files)
)
tracked_files = list(
filter(lambda f: f not in untracked_files, files)
)
for file in untracked_files:
file_id = uuid4()
# Get Username
owner = pathlib.Path(file).parts[3]
# Get Creation Date of File
# Here, we are assuming that ctime is creation time
# which is mostly not true.
creation_date = time.ctime(os.stat(file).st_ctime)
# Get File Size
size = os.path.getsize(file)
# Compute sha512 sum
sha_sum = sha512sum(file)
# File Path excluding base and username
file_path = pathlib.Path(file).parts[4:]
file_path = os.path.join(*file_path)
# Create Entry
entry_key = os.path.join(FILE_PREFIX, str(file_id))
entry_value = {
"filename": file_path,
"owner": owner,
"sha512sum": sha_sum,
"creation_date": creation_date,
"size": size
}
print("Tracking {}".format(file))
# Insert Entry
etcd_client.put(entry_key, entry_value, value_in_json=True)
setxattr(file, "user.utracked", True)