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import glob
import os
import subprocess
import sys
import time
from collections import deque
server = False
loglevel = {
0: ("DEBUG", "3;240"),
1: ("INFO", "0;37"),
2: ("NOTIF", "1;37"),
3: ("WARN", "1;33"),
4: ("ERROR", "1;31")
}
LOGLEVEL=1
def msg(data):
print("\n\033[1;34m:: \033[1;37m{}\033[0m".format(data))
def log(level, facility, text):
if level not in loglevel.keys():
raise Exception("Loglevel is not valid: " + str(level))
if level < LOGLEVEL:
return
print("\033[{1}m[{2}] {0} {3}: {4}\033[0m".format(*loglevel[level], time.strftime("%FT%T%z"), facility, text))
with open(os.path.join(os.environ["HOME"], ".autoSync.log"), "a") as f:
f.write("[{2}] {0} {3}: {4}\n".format(*loglevel[level], time.strftime("%FT%T%z"), facility, text))
def sync(source, dest, ignoreFile=None, verbose=False):
"""Synchronizes data between a source and a target."""
args = ["rsync", "--delete", "-zHaAXS", source, dest]
if ignoreFile is not None:
args.append("--exclude-from="+ignoreFile)
if verbose:
args[2] += "v"
return subprocess.call(args)
def getTab(name="", elements=[]):
"""Get entries"""
tabData = {}
if name in ["", "default"]:
tabFile = os.path.join(os.environ["HOME"], ".autoSync.tab")
else:
tabFile = os.path.join(os.environ["HOME"], ".autoSync.{}.tab".format(name))
try:
with open(tabFile, "r") as f:
for line in f.readlines():
name, src, dst = filter(lambda i: len(i) > 0, line.rstrip("\n").split("\t"))
tabData[name] = (os.path.expandvars(os.path.expanduser(src)), os.path.expandvars(os.path.expanduser(dst)))
except FileNotFoundError:
log(4, "Tab", "The tabfile @{} (path '{}') could not be read.".format(
name,
tabFile
))
return []
except PermissionError:
log(4, "Tab", "The tabfile @{} (path '{}') is not readable to me.".format(
name,
tabFile
))
return []
if len(elements) < 1:
elements = list(tabData.keys())
for itemName in elements:
if itemName in tabData.keys():
yield (itemName, *tabData[itemName])
def getTimestamp(source, dest):
"""Get source and destination timestamps"""
sourceTS = os.path.join(source, ".lastsync")
destTS = os.path.join(dest, ".lastsync")
if sync(sourceTS, "/tmp/source.ts") != 0:
log(0, "ts", "Source timestamp could not be retrieved, assuming zero")
with open("/tmp/source.ts", "w") as f:
f.write("0")
if sync(destTS, "/tmp/dest.ts") != 0:
log(0, "ts", "Destination timestamp could not be retrieved, assuming zero")
with open("/tmp/dest.ts", "w") as f:
f.write("0")
with open("/tmp/source.ts", "r") as sourceF, open("/tmp/dest.ts", "r") as destF:
tsTuple = []
for f in [sourceF, destF]:
try:
tsTuple.append(float(f.read()))
except ValueError:
tsTuple.append(0)
return tsTuple
def run():
global server, LOGLEVEL
if "LOGLEVEL" in os.environ:
LOGLEVEL = int(os.environ["LOGLEVEL"])
args = deque(sys.argv[1:])
if len(args) < 1:
print("{0} @ – list available tab names\n{0} @@tabname – list available entries under tabname\n{0}[ @tabname] entry1 entry2 – synchronizes entry1 and entry2 from tabname (or default)\n{0} @tabname – synchronizes every entry found in tabname\n{0} -s [@tabname][ entry1[ entry2[ …]]] – synchronizes in server mode (ie don't refresh timestamp)\n\nIf tabname is omitted, will use default file located at ~/.autoSync.tab (also available through the @default tabname)".format(os.path.basename(sys.argv[0])))
return
firstArg = args.popleft()
if firstArg == "-s":
server = True
firstArg = args.popleft()
log(1, "main", "Activated server mode")
tabname = ""
if firstArg.startswith("@"):
if firstArg.startswith("@@"): # list available entries for tabfile
elts = list(sorted(getTab(name=firstArg.lstrip("@"))))
msg("Available entries for tabfile {}:".format((lambda i: ["default", i][len(i)>0])(firstArg.lstrip("@"))))
maxLenName = max(len(line[0]) for line in elts+["Name"])
maxLenSrc = max(len(line[1]) for line in elts+["Source"])
maxLenDst = max(len(line[2]) for line in elts+["Target"])
print("\n\033[1;37m%-*s %-*s %-*s\033[0m" % (maxLenName, "Name", maxLenSrc, "Source", maxLenDst, "Target"))
for ename, esrc, edst in elts:
print("%-*s %-*s %-*s" % (maxLenName, ename, maxLenSrc, esrc, maxLenDst, edst))
return
elif firstArg == "@": # lists all available tabFiles
files = glob.glob(os.path.join(os.environ["HOME"], ".autoSync.*.tab"))
msg("Available tables:")
if os.path.exists(os.path.join(os.environ["HOME"], ".autoSync.tab")):
print("– default")
print("\n".join("– " + os.path.basename(fileName).split(".", 2)[2][:-4] for fileName in files))
return
else:
tabname = firstArg.lstrip("@")
log(0, "main", "tabname given, setting to {}".format(tabname))
else:
args.appendleft(firstArg)
log(0, "main", "no tabname given, using default")
for name, src, dst in getTab(tabname, args):
srcT, dstT = getTimestamp(src, dst)
ignoreFile = os.path.join(src, ".ignore.lst")
if not os.path.exists(ignoreFile):
ignoreFile = None
if tabname == "":
tabname = "default"
status = None
if srcT >= dstT:
log(2, "sync {}@{}".format(name, tabname), "Source is more recent than destination, sending data")
if not server:
with open(os.path.join(src, ".lastsync"), "w") as f:
f.write(str(time.time()))
else:
log(1, "sync {}@{}".format(name, tabname), "Server mode is on, will not update timestamps")
status = sync(src, dst, ignoreFile, True)
else:
log(2, "sync {}@{}".format(name, tabname), "Destination is more recent than source, fetching data")
if server:
log(1, "sync {}@{}".format(name, tabname), "Server mode is on, will not update timestamps")
status = sync(dst, src, ignoreFile, True)
if not server and status == 0:
with open(os.path.join(src, ".lastsync"), "w") as f:
f.write(str(time.time()))
if status != 0 and status is not None:
log(4, "sync {}@{}".format(name, tabname), "Error while syncing target")
continue
if os.path.exists("/tmp/source.ts"):
os.unlink("/tmp/source.ts")
if os.path.exists("/tmp/dest.ts"):
os.unlink("/tmp/dest.ts")
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