502 lines
16 KiB
Plaintext
Executable file
502 lines
16 KiB
Plaintext
Executable file
#!/usr/bin/env nix-shell
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#! nix-shell -i python3 --pure
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#! nix-shell -p python3 python3Packages.coloredlogs python3Packages.progressbar2
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# Handles sync-conflict files
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import argparse
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import logging
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import os
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import pickle
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import re
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import sys
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import zlib
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import coloredlogs
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import progressbar
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progressbar.streams.wrap_stderr()
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coloredlogs.install(level="INFO", fmt="%(levelname)s %(message)s")
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log = logging.getLogger()
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# 1) Create file list with conflict files
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# 2) Gather file informations (date, owner, size, checksum)
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# 3) Propose what to do
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def sizeof_fmt(num, suffix="B"):
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# Stolen from https://stackoverflow.com/a/1094933
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for unit in ["", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"]:
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if abs(num) < 1024.0:
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return "%3.1f %s%s" % (num, unit, suffix)
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num /= 1024.0
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return "%.1f %s%s" % (num, "Yi", suffix)
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class Table:
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def __init__(self, width, height):
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self.width = width
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self.height = height
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self.data = [["" for _ in range(self.height)] for _ in range(self.width)]
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def set(self, x, y, data):
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self.data[x][y] = str(data)
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def print(self):
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widths = [max([len(cell) for cell in column]) for column in self.data]
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for y in range(self.height):
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for x in range(self.width):
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cell = self.data[x][y]
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l = len(cell)
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width = widths[x]
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if x > 0:
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cell = " | " + cell
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cell = cell + " " * (width - l)
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print(cell, end="\t")
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print()
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class Database:
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VERSION = 1
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CONFLICT_PATTERN = re.compile("\.sync-conflict-\d{8}-\d{6}-\w{7}")
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def __init__(self, directory):
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self.version = Database.VERSION
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self.directory = directory
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self.data = dict()
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def prune(self):
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toPrune = list()
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for filepath, databaseFile in self.data.items():
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databaseFile.migrate() # TODO Temp dev stuff
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databaseFile.prune()
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if not databaseFile.isRelevant():
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toPrune.append(filepath)
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for filepath in toPrune:
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del self.data[filepath]
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def nbFiles(self):
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return sum(databaseFile.nbFiles() for databaseFile in self.data.values())
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def totalSize(self):
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return sum(databaseFile.totalSize() for databaseFile in self.data.values())
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def maxSize(self):
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return sum(databaseFile.maxSize() for databaseFile in self.data.values())
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def totalChecksumSize(self):
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return sum(
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databaseFile.totalChecksumSize() for databaseFile in self.data.values()
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)
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def getList(self):
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self.prune()
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log.info("Finding conflict files")
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widgets = [
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progressbar.AnimatedMarker(),
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" ",
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progressbar.BouncingBar(),
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" ",
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progressbar.DynamicMessage("conflicts"),
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" ",
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progressbar.DynamicMessage("files"),
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" ",
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progressbar.DynamicMessage("dir", width=20, precision=20),
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" ",
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progressbar.Timer(),
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]
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bar = progressbar.ProgressBar(widgets=widgets).start()
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f = 0
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for root, dirs, files in os.walk(self.directory):
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for conflictFilename in files:
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f += 1
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if not Database.CONFLICT_PATTERN.search(conflictFilename):
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continue
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filename = Database.CONFLICT_PATTERN.sub("", conflictFilename)
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key = (root, filename)
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if key in self.data:
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dataFile = self.data[key]
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else:
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dataFile = DatabaseFile(root, filename)
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self.data[key] = dataFile
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if filename in files:
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dataFile.addConflict(filename)
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dataFile.addConflict(conflictFilename)
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bar.update(
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conflicts=len(self.data), files=f, dir=root[(len(self.directory) + 1) :]
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)
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bar.finish()
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log.info(
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f"Found {len(self.data)} conflicts, totalling {self.nbFiles()} conflict files."
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)
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def getStats(self):
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log.info("Getting stats from conflict files")
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bar = progressbar.ProgressBar(max_value=self.nbFiles()).start()
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f = 0
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for databaseFile in self.data.values():
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databaseFile.getStats()
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f += databaseFile.nbFiles()
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bar.update(f)
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bar.finish()
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log.info(
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f"Total file size: {sizeof_fmt(self.totalSize())}, possible save: {sizeof_fmt(self.totalSize() - self.maxSize())}"
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)
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def getChecksums(self):
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log.info("Checksumming conflict files")
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widgets = [
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progressbar.DataSize(),
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" of ",
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progressbar.DataSize("max_value"),
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" (",
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progressbar.AdaptiveTransferSpeed(),
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") ",
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progressbar.Bar(),
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" ",
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progressbar.DynamicMessage("dir", width=20, precision=20),
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" ",
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progressbar.DynamicMessage("file", width=20, precision=20),
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" ",
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progressbar.Timer(),
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" ",
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progressbar.AdaptiveETA(),
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]
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bar = progressbar.DataTransferBar(
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max_value=self.totalChecksumSize(), widgets=widgets
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).start()
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f = 0
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for databaseFile in self.data.values():
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bar.update(
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f,
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dir=databaseFile.root[(len(self.directory) + 1) :],
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file=databaseFile.filename,
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)
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f += databaseFile.totalChecksumSize()
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try:
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databaseFile.getChecksums()
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except KeyboardInterrupt:
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return
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except BaseException as e:
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log.error(e, exc_info=True)
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pass
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bar.finish()
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def printDifferences(self):
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for databaseFile in self.data.values():
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print()
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databaseFile.printInfos(diff=True)
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def takeAction(self, execute=False, *args, **kwargs):
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for databaseFile in self.data.values():
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databaseFile.decideAction(*args, **kwargs)
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databaseFile.takeAction(execute=execute)
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class DatabaseFile:
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BLOCK_SIZE = 4096
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RELEVANT_STATS = ("st_mode", "st_uid", "st_gid", "st_size", "st_mtime")
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def __init__(self, root, filename):
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self.root = root
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self.filename = filename
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self.stats = []
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self.conflicts = []
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self.checksums = []
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self.action = None
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log.debug(f"{self.root}/{self.filename} - new")
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def addConflict(self, conflict):
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if conflict in self.conflicts:
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return
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self.conflicts.append(conflict)
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self.stats.append(None)
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self.checksums.append(None)
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log.debug(f"{self.root}/{self.filename} - add: {conflict}")
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def migrate(self):
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# Temp dev stuff since I don't want to resum that whole 400 GiB dir
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if self.stats is None:
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self.stats = [None] * len(self.conflicts)
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try:
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if self.checksums is None:
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self.checksums = [None] * len(self.conflicts)
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except AttributeError:
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self.checksums = [None] * len(self.conflicts)
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def removeConflict(self, conflict):
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f = self.conflicts.index(conflict)
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del self.conflicts[f]
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del self.stats[f]
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del self.checksums[f]
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log.debug(f"{self.root}/{self.filename} - del: {conflict}")
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def getPath(self, conflict):
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return os.path.join(self.root, conflict)
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def getPaths(self):
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return [self.getPath(conflict) for conflict in self.conflicts]
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def prune(self):
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toPrune = list()
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for conflict in self.conflicts:
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if not os.path.isfile(self.getPath(conflict)):
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toPrune.append(conflict)
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if len(toPrune):
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for conflict in toPrune:
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self.removeConflict(conflict)
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def isRelevant(self):
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if len(self.conflicts) == 1:
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if self.conflicts[0] == self.filename:
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return False
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elif len(self.conflicts) < 1:
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return False
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else:
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return True
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def nbFiles(self):
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return len(self.conflicts)
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def totalSize(self):
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return sum((stat.st_size if stat is not None else 0) for stat in self.stats)
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def maxSize(self):
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return max((stat.st_size if stat is not None else 0) for stat in self.stats)
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def totalChecksumSize(self):
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size = 0
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for f, checksum in enumerate(self.checksums):
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if checksum is None:
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stat = self.stats[f]
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if stat is not None:
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size += stat.st_size
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return size
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def getStats(self):
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for f, conflict in enumerate(self.conflicts):
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oldStat = self.stats[f]
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newStat = os.stat(self.getPath(conflict))
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oldChecksum = self.checksums[f]
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# If it's been already summed, and we have the same inode and same ctime, don't resum
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if (
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oldStat is None
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or not isinstance(oldChecksum, int)
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or oldStat.st_size != newStat.st_size
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or oldStat.st_dev != newStat.st_dev
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or oldStat.st_ino != newStat.st_ino
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or oldStat.st_ctime != newStat.st_ctime
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or oldStat.st_dev != newStat.st_dev
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):
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self.checksums[f] = None
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self.stats[f] = newStat
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# If all the file are of different size, set as different files
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if len(self.stats) == len(set([s.st_size for s in self.stats])):
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self.checksums = [False] * len(self.conflicts)
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# If all the files are the same inode, set as same files
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if (
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len(set([s.st_ino for s in self.stats])) == 1
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and len(set([s.st_dev for s in self.stats])) == 1
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):
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self.checksums = [True] * len(self.conflicts)
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def getChecksums(self):
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# TODO It's not even required to have a sum, this thing is not collision resistant now
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# TODO We might use BTRFS feature to know if conflict files are deduplicated between them
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filedescs = dict()
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for f, conflict in enumerate(self.conflicts):
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if self.checksums[f] is not None:
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continue
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self.checksums[f] = 1
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filedescs[f] = open(self.getPath(conflict), "rb")
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while len(filedescs):
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toClose = set()
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# Compute checksums for next block for all files
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for f, filedesc in filedescs.items():
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data = filedesc.read(DatabaseFile.BLOCK_SIZE)
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self.checksums[f] = zlib.adler32(data, self.checksums[f])
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if len(data) < DatabaseFile.BLOCK_SIZE:
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toClose.add(f)
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# Stop summing as soon as checksum diverge
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for f in filedescs.keys():
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if self.checksums.count(self.checksums[f]) < 2:
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toClose.add(f)
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for f in toClose:
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filedescs[f].close()
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del filedescs[f]
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def getFeatures(self):
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features = dict()
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features["name"] = self.conflicts
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features["sum"] = self.checksums
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for statName in DatabaseFile.RELEVANT_STATS:
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# Rounding beause I Syncthing also rounds
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features[statName] = [
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int(stat.__getattribute__(statName)) for stat in self.stats
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]
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return features
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def getDiffFeatures(self):
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features = self.getFeatures()
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diffFeatures = dict()
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for key, vals in features.items():
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if len(set(vals)) > 1:
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diffFeatures[key] = vals
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return diffFeatures
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@staticmethod
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def shortConflict(conflict):
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match = Database.CONFLICT_PATTERN.search(conflict)
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if match:
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return match[0][15:]
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else:
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return "-"
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def printInfos(self, diff=True):
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print(os.path.join(self.root, self.filename))
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if diff:
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features = self.getDiffFeatures()
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else:
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features = self.getFeatures()
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features["name"] = [DatabaseFile.shortConflict(c) for c in self.conflicts]
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table = Table(len(features), len(self.conflicts) + 1)
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for x, featureName in enumerate(features.keys()):
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table.set(x, 0, featureName)
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for x, featureName in enumerate(features.keys()):
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for y in range(len(self.conflicts)):
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table.set(x, y + 1, features[featureName][y])
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table.print()
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def decideAction(self, mostRecent=False):
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# TODO More arguments for choosing
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reason = "undecided"
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self.action = None
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if len(self.conflicts) == 1:
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self.action = 0
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reason = "only file"
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else:
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features = self.getDiffFeatures()
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if len(features) == 1:
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reason = "same files"
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self.action = 0
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elif "st_mtime" in features and mostRecent:
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recentTime = features["st_mtime"][0]
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recentIndex = 0
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for index, time in enumerate(features["st_mtime"]):
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if time > recentTime:
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recentTime = time
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recentIndex = 0
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self.action = recentIndex
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reason = "most recent"
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if self.action is None:
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log.warning(f"{self.root}/{self.filename}: skip, cause: {reason}")
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else:
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log.info(
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f"{self.root}/{self.filename}: keep {DatabaseFile.shortConflict(self.conflicts[self.action])}, cause: {reason}"
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)
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def takeAction(self, execute=False):
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if self.action is None:
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return
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actionName = self.conflicts[self.action]
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if actionName != self.filename:
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log.debug(
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f"Rename {self.getPath(actionName)} → {self.getPath(self.filename)}"
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)
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if execute:
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os.rename(self.getPath(actionName), self.getPath(self.filename))
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for conflict in self.conflicts:
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if conflict is actionName:
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continue
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log.debug(f"Delete {self.getPath(conflict)}")
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if execute:
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os.unlink(self.getPath(conflict))
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(
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description="Handle Syncthing's .sync-conflict files "
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)
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# Execution flow
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parser.add_argument(
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"directory", metavar="DIRECTORY", nargs="?", help="Directory to analyse"
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)
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parser.add_argument("-d", "--database", help="Database path for file informations")
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parser.add_argument(
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"-r",
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"--most-recent",
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action="store_true",
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help="Always keep the most recent version",
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)
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parser.add_argument(
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"-e", "--execute", action="store_true", help="Really apply changes"
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)
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parser.add_argument(
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"-p",
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"--print",
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action="store_true",
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help="Only print differences between files",
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)
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args = parser.parse_args()
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# Argument default values attribution
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if args.directory is None:
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args.directory = os.curdir
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args.directory = os.path.realpath(args.directory)
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# Create / load the database
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database = None
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if args.database:
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if os.path.isfile(args.database):
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try:
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with open(args.database, "rb") as databaseFile:
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database = pickle.load(databaseFile)
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assert isinstance(database, Database)
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except BaseException as e:
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raise ValueError("Not a database file")
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assert (
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database.version <= Database.VERSION
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), "Version of the loaded database is too recent"
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assert (
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database.directory == args.directory
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), "Directory of the loaded database doesn't match"
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if database is None:
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database = Database(args.directory)
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def saveDatabase():
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if args.database:
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global database
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with open(args.database, "wb") as databaseFile:
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pickle.dump(database, databaseFile)
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database.getList()
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saveDatabase()
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database.getStats()
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saveDatabase()
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database.getChecksums()
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saveDatabase()
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if args.print:
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database.printDifferences()
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else:
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database.takeAction(mostRecent=args.most_recent, execute=args.execute)
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