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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Why?
Converts this
GlusterFS Changelog | version: v1.1 | encoding : 2
E0b99ef11-4b79-4cd0-9730-b5a0e8c4a8c0^@4^@16877^@0^@0^@00000000-0000-0000-0000-
000000000001/dir1^@Ec5250af6-720e-4bfe-b938-827614304f39^@23^@33188^@0^@0^@0b99
ef11-4b79-4cd0-9730-b5a0e8c4a8c0/hello.txt^@Dc5250af6-720e-4bfe-b938-827614304f
39^@Dc5250af6-720e-4bfe-b938-827614304f39^@
to human readable :)
E 0b99ef11-4b79-4cd0-9730-b5a0e8c4a8c0 MKDIR 16877 0 000000000-0000-0000-0000
-000000000001/dir1
E c5250af6-720e-4bfe-b938-827614304f39 CREATE 33188 0 0 0b99ef11-4b79-4cd0-9730
-b5a0e8c4a8c0/hello.txt
D c5250af6-720e-4bfe-b938-827614304f39
D c5250af6-720e-4bfe-b938-827614304f39
"""
import sys
import codecs
ENTRY = 'E'
META = 'M'
DATA = 'D'
SEP = "\x00"
GF_FOP = [
"NULL", "STAT", "READLINK", "MKNOD", "MKDIR", "UNLINK",
"RMDIR", "SYMLINK", "RENAME", "LINK", "TRUNCATE", "OPEN",
"READ", "WRITE", "STATFS", "FLUSH", "FSYNC", "SETXATTR",
"GETXATTR", "REMOVEXATTR", "OPENDIR", "FSYNCDIR", "ACCESS",
"CREATE", "FTRUNCATE", "FSTAT", "LK", "LOOKUP", "READDIR",
"INODELK", "FINODELK", "ENTRYLK", "FENTRYLK", "XATTROP",
"FXATTROP", "FSETXATTR", "FGETXATTR", "RCHECKSUM", "SETATTR",
"FSETATTR", "READDIRP", "GETSPEC", "FORGET", "RELEASE",
"RELEASEDIR", "FREMOVEXATTR", "FALLOCATE", "DISCARD", "ZEROFILL"]
class NumTokens_V11(object):
E = 7
M = 3
D = 2
NULL = 3
MKNOD = 7
MKDIR = 7
UNLINK = 4
RMDIR = 4
SYMLINK = 4
RENAME = 5
LINK = 4
SETXATTR = 3
REMOVEXATTR = 3
CREATE = 7
SETATTR = 3
FTRUNCATE = 3
FXATTROP = 3
class NumTokens_V12(NumTokens_V11):
UNLINK = 5
RMDIR = 5
class Version:
V11 = "v1.1"
V12 = "v1.2"
class Record(object):
def __init__(self, **kwargs):
self.ts = kwargs.get("ts", None)
self.fop_type = kwargs.get("fop_type", None)
self.gfid = kwargs.get("gfid", None)
self.path = kwargs.get("path", None)
self.fop = kwargs.get("fop", None)
self.path1 = kwargs.get("path1", None)
self.path2 = kwargs.get("path2", None)
self.mode = kwargs.get("mode", None)
self.uid = kwargs.get("uid", None)
self.gid = kwargs.get("gid", None)
def create_mknod_mkdir(self, **kwargs):
self.path = kwargs.get("path", None)
self.fop = kwargs.get("fop", None)
self.mode = kwargs.get("mode", None)
self.uid = kwargs.get("uid", None)
self.gid = kwargs.get("gid", None)
def metadata(self, **kwargs):
self.fop = kwargs.get("fop", None)
def rename(self, **kwargs):
self.fop = kwargs.get("fop", None)
self.path1 = kwargs.get("path1", None)
self.path2 = kwargs.get("path2", None)
def link_symlink_unlink_rmdir(self, **kwargs):
self.path = kwargs.get("path", None)
self.fop = kwargs.get("fop", None)
def __unicode__(self):
if self.fop_type == "D":
return u"{ts} {fop_type} {gfid}".format(**self.__dict__)
elif self.fop_type == "M":
return u"{ts} {fop_type} {gfid} {fop}".format(**self.__dict__)
elif self.fop_type == "E":
if self.fop in ["CREATE", "MKNOD", "MKDIR"]:
return (u"{ts} {fop_type} {gfid} {fop} "
u"{path} {mode} {uid} {gid}".format(**self.__dict__))
elif self.fop == "RENAME":
return (u"{ts} {fop_type} {gfid} {fop} "
u"{path1} {path2}".format(**self.__dict__))
elif self.fop in ["LINK", "SYMLINK", "UNLINK", "RMDIR"]:
return (u"{ts} {fop_type} {gfid} {fop} "
u"{path}".format(**self.__dict__))
else:
return repr(self.__dict__)
else:
return repr(self.__dict__)
def __str__(self):
return unicode(self).encode('utf-8')
def get_num_tokens(data, tokens, version=Version.V11):
if version == Version.V11:
cls_numtokens = NumTokens_V11
elif version == Version.V12:
cls_numtokens = NumTokens_V12
else:
sys.stderr.write("Unknown Changelog Version\n")
sys.exit(1)
if data[tokens[0]] in [ENTRY, META]:
if len(tokens) >= 3:
return getattr(cls_numtokens, GF_FOP[int(data[tokens[2]])])
else:
return None
else:
return getattr(cls_numtokens, data[tokens[0]])
def process_record(data, tokens, changelog_ts, callback):
if data[tokens[0]] in [ENTRY, META]:
try:
tokens[2] = GF_FOP[int(data[tokens[2]])]
except ValueError:
tokens[2] = "NULL"
if not changelog_ts:
ts1 = int(changelog_ts)
else:
ts1=""
record = Record(ts=ts1, fop_type=data[tokens[0]],
gfid=data[tokens[1]])
if data[tokens[0]] == META:
record.metadata(fop=tokens[2])
elif data[tokens[0]] == ENTRY:
if tokens[2] in ["CREATE", "MKNOD", "MKDIR"]:
record.create_mknod_mkdir(fop=tokens[2],
path=data[tokens[6]],
mode=int(data[tokens[3]]),
uid=int(data[tokens[4]]),
gid=int(data[tokens[5]]))
elif tokens[2] == "RENAME":
record.rename(fop=tokens[2],
path1=data[tokens[3]],
path2=data[tokens[4]])
if tokens[2] in ["LINK", "SYMLINK", "UNLINK", "RMDIR"]:
record.link_symlink_unlink_rmdir(fop=tokens[2],
path=data[tokens[3]])
callback(record)
def default_callback(record):
sys.stdout.write(u"{0}\n".format(record))
def parse(filename, callback=default_callback):
data = None
tokens = []
changelog_ts = filename.rsplit(".")[-1]
with codecs.open(filename, mode="rb", encoding="utf-8") as f:
# GlusterFS Changelog | version: v1.1 | encoding : 2
header = f.readline()
version = header.split()[4]
data = f.readline()
slice_start = 0
in_record = False
prev_char = ""
next_char = ""
for i, c in enumerate(data):
next_char = ""
if len(data) >= (i + 2):
next_char = data[i+1]
if not in_record and c in [ENTRY, META, DATA]:
tokens.append(slice(slice_start, i+1))
slice_start = i+1
in_record = True
continue
if c == SEP and ((prev_char != SEP and next_char == SEP) or
(prev_char == SEP and next_char != SEP) or
(prev_char != SEP and next_char != SEP)):
tokens.append(slice(slice_start, i))
slice_start = i+1
num_tokens = get_num_tokens(data, tokens, version)
if num_tokens == len(tokens):
process_record(data, tokens, changelog_ts, callback)
in_record = False
tokens = []
prev_char = c
# process last record
if slice_start < (len(data) - 1):
tokens.append(slice(slice_start, len(data)))
process_record(data, tokens, changelog_ts, callback)
tokens = []
parse(sys.argv[1])
|
