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Analysisbinlog.py
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#!/usr/bin/env python
# -*- encoding: utf-8 -*-
'''
@author: Great God
'''
import struct,time,datetime,os
import sys,decimal,getopt,types
reload(sys)
sys.setdefaultencoding('utf-8')
'''column type '''
class column_type_dict:
MYSQL_TYPE_DECIMAL=0
MYSQL_TYPE_TINY=1
MYSQL_TYPE_SHORT=2
MYSQL_TYPE_LONG=3
MYSQL_TYPE_FLOAT=4
MYSQL_TYPE_DOUBLE=5
MYSQL_TYPE_NULL=6
MYSQL_TYPE_TIMESTAMP=7
MYSQL_TYPE_LONGLONG=8
MYSQL_TYPE_INT24=9
MYSQL_TYPE_DATE=10
MYSQL_TYPE_TIME=11
MYSQL_TYPE_DATETIME=12
MYSQL_TYPE_YEAR=13
MYSQL_TYPE_NEWDATE=14
MYSQL_TYPE_VARCHAR=15
MYSQL_TYPE_BIT=16
MYSQL_TYPE_TIMESTAMP2=17
MYSQL_TYPE_DATETIME2=18
MYSQL_TYPE_TIME2=19
MYSQL_TYPE_JSON=245
MYSQL_TYPE_NEWDECIMAL=246
MYSQL_TYPE_ENUM=247
MYSQL_TYPE_SET=248
MYSQL_TYPE_TINY_BLOB=249
MYSQL_TYPE_MEDIUM_BLOB=250
MYSQL_TYPE_LONG_BLOB=251
MYSQL_TYPE_BLOB=252
MYSQL_TYPE_VAR_STRING=253
MYSQL_TYPE_STRING=254
MYSQL_TYPE_GEOMETRY=255
''''''
'''mysql_binlog_event start GTID_EVENT end XID_EVENT'''
class binlog_events:
UNKNOWN_EVENT= 0
START_EVENT_V3= 1
QUERY_EVENT= 2
STOP_EVENT= 3
ROTATE_EVENT= 4
INTVAR_EVENT= 5
LOAD_EVENT= 6
SLAVE_EVENT= 7
CREATE_FILE_EVENT= 8
APPEND_BLOCK_EVENT= 9
EXEC_LOAD_EVENT= 10
DELETE_FILE_EVENT= 11
NEW_LOAD_EVENT= 12
RAND_EVENT= 13
USER_VAR_EVENT= 14
FORMAT_DESCRIPTION_EVENT= 15
XID_EVENT= 16
BEGIN_LOAD_QUERY_EVENT= 17
EXECUTE_LOAD_QUERY_EVENT= 18
TABLE_MAP_EVENT = 19
PRE_GA_WRITE_ROWS_EVENT = 20
PRE_GA_UPDATE_ROWS_EVENT = 21
PRE_GA_DELETE_ROWS_EVENT = 22
WRITE_ROWS_EVENT = 23
UPDATE_ROWS_EVENT = 24
DELETE_ROWS_EVENT = 25
INCIDENT_EVENT= 26
HEARTBEAT_LOG_EVENT= 27
IGNORABLE_LOG_EVENT= 28
ROWS_QUERY_LOG_EVENT= 29
WRITE_ROWS_EVENT = 30
UPDATE_ROWS_EVENT = 31
DELETE_ROWS_EVENT = 32
GTID_LOG_EVENT= 33
ANONYMOUS_GTID_LOG_EVENT= 34
PREVIOUS_GTIDS_LOG_EVENT= 35
''''''
'''json type'''
class json_type:
NULL_COLUMN = 251
UNSIGNED_CHAR_COLUMN = 251
UNSIGNED_SHORT_COLUMN = 252
UNSIGNED_INT24_COLUMN = 253
UNSIGNED_INT64_COLUMN = 254
UNSIGNED_CHAR_LENGTH = 1
UNSIGNED_SHORT_LENGTH = 2
UNSIGNED_INT24_LENGTH = 3
UNSIGNED_INT64_LENGTH = 8
JSONB_TYPE_SMALL_OBJECT = 0x0
JSONB_TYPE_LARGE_OBJECT = 0x1
JSONB_TYPE_SMALL_ARRAY = 0x2
JSONB_TYPE_LARGE_ARRAY = 0x3
JSONB_TYPE_LITERAL = 0x4
JSONB_TYPE_INT16 = 0x5
JSONB_TYPE_UINT16 = 0x6
JSONB_TYPE_INT32 = 0x7
JSONB_TYPE_UINT32 = 0x8
JSONB_TYPE_INT64 = 0x9
JSONB_TYPE_UINT64 = 0xA
JSONB_TYPE_DOUBLE = 0xB
JSONB_TYPE_STRING = 0xC
JSONB_TYPE_OPAQUE = 0xF
JSONB_LITERAL_NULL = 0x0
JSONB_LITERAL_TRUE = 0x1
JSONB_LITERAL_FALSE = 0x2
''''''
BINLOG_FILE_HEADER = b'\xFE\x62\x69\x6E'
binlog_event_header_len = 19
binlog_event_fix_part = 13
binlog_quer_event_stern = 4
binlog_row_event_extra_headers = 2
read_format_desc_event_length = 56
binlog_xid_event_length = 8
table_map_event_fix_length = 8
fix_length = 8
''''''
class _at_pos:
_at_pos = None
_next_pos = None
''''''
class _rollback:
rollback_status = None
database = None
table = None
_gtid = None
_myfile = None
_myfunc = None
''''''
''''''
class _remote_filed:
_gtid = None
_gtid_status = None
_thread_id = None
_tid_status = None
_tid_gid = None
_tid_gid_pos = None
_tid_gid_time = None
_rollback_status = None
''''''
class Echo(object):
'''
print binlog
'''
def Version(self, binlog_ver, server_ver, create_time):
print 'binlog_ver : {} server_ver : {} create_time : {}'.format(binlog_ver, server_ver, create_time)
def TractionHeader(self, thread_id, database_name, sql_statement, timestamp,_pos):
if _remote_filed._thread_id:
if _remote_filed._thread_id == thread_id:
self.Gtid(timestamp,_remote_filed._tid_gid,_remote_filed._tid_gid_pos)
print '{} GTID_NEXT : {} at pos : {}'.format(_remote_filed._tid_gid_time, _remote_filed._tid_gid, _remote_filed._tid_gid_pos)
print '{} thread id : {} at pos : {} database : {} statement : {}'.format(timestamp, thread_id, _pos,
database_name, sql_statement)
_remote_filed._tid_status = True
if _remote_filed._rollback_status:
_rollback.database = database_name
elif _remote_filed._gtid:
if _remote_filed._gtid_status:
print '{} thread id : {} at pos : {} database : {} statement : {}'.format(timestamp, thread_id,
_pos,
database_name,
sql_statement)
if _remote_filed._rollback_status:
_rollback.database = database_name
elif _rollback.rollback_status:
_rollback.database = database_name
else:
print '{} thread id : {} at pos : {} database : {} statement : {}'.format(timestamp, thread_id, _pos, database_name, sql_statement)
def Xid(self, timestamp, xid_num,_pos):
if _remote_filed._thread_id:
if _remote_filed._tid_status:
_remote_filed._tid_status = None
print '{} statement : COMMIT xid : {} at pos : {}'.format(timestamp, xid_num, _pos)
print ''
elif _remote_filed._gtid:
if _remote_filed._gtid_status:
print '{} statement : COMMIT xid : {} at pos : {}'.format(timestamp, xid_num, _pos)
print ''
raise ''
elif _rollback.rollback_status:
_rollback._myfunc.SaveGtid(xid=True)
else:
print '{} statement : COMMIT xid : {} at pos : {}'.format(timestamp, xid_num, _pos)
print ''
def Tablemap(self, timestamp, tablename):
if _remote_filed._thread_id:
if _remote_filed._tid_status:
print '{} tablename : {}'.format(timestamp, tablename)
if _remote_filed._rollback_status:
_rollback.table = tablename
elif _remote_filed._gtid:
if _remote_filed._gtid_status:
print '{} tablename : {}'.format(timestamp, tablename)
if _remote_filed._rollback_status:
_rollback.table = tablename
elif _rollback.rollback_status:
_rollback.table = tablename
else:
print '{} tablename : {}'.format(timestamp, tablename)
def Gtid(self, timestamp, gtid,_pos):
if _remote_filed._thread_id:
_remote_filed._tid_gid,_remote_filed._tid_gid_pos,_remote_filed._tid_gid_time = gtid,_pos,timestamp
elif _remote_filed._gtid:
if _remote_filed._gtid == gtid:
print '{} GTID_NEXT : {} at pos : {}'.format(timestamp, gtid, _pos)
_remote_filed._gtid_status = True
elif _rollback.rollback_status:
_rollback._myfunc.SaveGtid(gtid=gtid)
else:
print '{} GTID_NEXT : {} at pos : {}'.format(timestamp, gtid,_pos)
def TractionVlues(self, before_value=None, after_value=None, type=None):
if _remote_filed._thread_id:
if _remote_filed._tid_status:
if _remote_filed._rollback_status:
_rollback._myfunc.CreateSQL(before_value=before_value, after_value=after_value, event_type=type)
else:
self._tv(before_value=before_value, after_value=after_value, type=type)
elif _remote_filed._gtid:
if _remote_filed._gtid_status:
if _remote_filed._rollback_status:
_rollback._myfunc.CreateSQL(before_value=before_value, after_value=after_value, event_type=type)
else:
self._tv(before_value=before_value, after_value=after_value, type=type)
elif _rollback.rollback_status:
_rollback._myfunc.CreateSQL(before_value=before_value,after_value=after_value,event_type=type)
else:
self._tv(before_value=before_value,after_value=after_value,type=type)
def _tv(self,before_value=None, after_value=None, type=None):
if type == binlog_events.UPDATE_ROWS_EVENT:
print '{: >21}{} before_value : [{}] after_value : [{}]'.format('', 'UPDATE_ROWS_EVENT',
','.join(['{}'.format(a) for a in
before_value]), ','.join(
['{}'.format(a) for a in after_value]))
else:
if type == binlog_events.DELETE_ROWS_EVENT:
print '{: >21}{} value : [{}] '.format('', 'DELETE_ROW_EVENT',
','.join(['{}'.format(a) for a in after_value]))
elif type == binlog_events.WRITE_ROWS_EVENT:
print '{: >21}{} value : [{}] '.format('', 'WRITE_ROW_EVENT',
','.join(['{}'.format(a) for a in after_value]))
class PrintSql(object):
def __seek(self,num):
try:
_rollback._myfile.seek(-num,1)
except:
_rollback._myfile.close()
self.rmfile()
sys.exit()
def read(self):
_num = 9
_rollback._myfile.seek(0,2)
while True:
self.__seek(_num)
_value,_type_code, = struct.unpack('QB',_rollback._myfile.read(_num))
self.__seek(_num)
if _type_code == 1:
self.__gtid(_value)
elif _type_code == 2:
self.__statement(_value)
else:
print 'Error: type_code {} '.format(_type_code)
def __gtid(self,tid):
self.__seek(36)
_uuid = _rollback._myfile.read(36)
gtid = _uuid.decode('utf8') + ':' + str(tid)
print ''
print '#{: >10} GTID_NEXT : {}'.format('-',gtid)
self.__seek(36)
def __statement(self,length):
self.__seek(length)
_sql = _rollback._myfile.read(length)
sql, = struct.unpack('{}s'.format(length),_sql)
print '{: >10}{}'.format('',sql)
self.__seek(length)
def rmfile(self):
os.remove('tmp_rollback')
class GetRollStatement(object):
def __init__(self,host,user,passwd,port=None):
import pymysql,traceback
self.port = port if port != None else 3306
try:
self.local_conn = pymysql.connect(host=host, user=user, passwd=passwd, port=port, db='',
charset="utf8")
except pymysql.Error,e:
print traceback.format_exc()
self.column_list = []
self._is_pri = []
def __join(self,column,value):
if type(value) is types.StringType:
if value == 'Null':
return ' {}={}'.format(column, value)
else:
return ' {}="{}"'.format(column, value)
else:
return ' {}={}'.format(column,value)
def WriteEvent(self,values):
sql = 'delete from {}.{} where '.format(_rollback.database,_rollback.table)
if self._is_pri:
sql += self.__join(self._is_pri[0][0],values[self._is_pri[0][1]])
else:
for i,column in enumerate(self.column_list):
sql += self.__join(column[0],values[i])
if column != self.column_list[-1]:
sql += ' and'
if _remote_filed._rollback_status:
print '{: >21}{}{}'.format('', '-- ', sql)
else:
self.__tmppack(sql,2)
def DeleteEvent(self,values):
sql = 'insert into {}.{}({}) values('.format(_rollback.database,_rollback.table,','.join([a[0] for a in self.column_list]))
for idex,value in enumerate(values):
if type(value) is types.StringType:
if value == 'Null':
sql += '{}'.format(value)
else:
sql += '"{}"'.format(value)
else:
sql += '{}'.format(value)
if len(values[idex:]) <= 1:
sql += ')'
else:
sql += ','
if _remote_filed._rollback_status:
print '{: >21}{}{}'.format('', '-- ', sql)
else:
self.__tmppack(sql, 2)
def UpateEvent(self,after_values,befor_values):
_set = []
_where = []
if self._is_pri:
_where.append(self.__join(self._is_pri[0][0],after_values[self._is_pri[0][1]]))
else:
for i,column in enumerate(self.column_list):
_where.append(self.__join(column[0],after_values[i]))
for i,column in enumerate(self.column_list):
_set.append(self.__join(column[0],befor_values[i]))
sql = 'update {}.{} set {} where {}'.format(_rollback.database, _rollback.table, ','.join(_set).replace(" ",""), ','.join(_where))
if _remote_filed._rollback_status:
print '{: >21}{}{}'.format('', '-- ',sql)
else:
self.__tmppack(sql, 2)
def GetColumnName(self):
with self.local_conn.cursor() as cur:
sql = 'desc {}.{};'.format(_rollback.database,_rollback.table)
cur.execute(sql)
result = cur.fetchall()
self.column_list = [[a[0],a[3]] for a in result]
def CreateSQL(self,before_value=None,after_value=None,event_type=None):
self.GetColumnName()
self._is_pri = [[_a[0], idex] for idex, _a in enumerate(self.column_list) if 'PRI' in _a]
if event_type == binlog_events.WRITE_ROWS_EVENT:
self.WriteEvent(after_value)
elif event_type == binlog_events.UPDATE_ROWS_EVENT:
self.UpateEvent(after_value,before_value)
elif event_type == binlog_events.DELETE_ROWS_EVENT:
self.DeleteEvent(after_value)
def SaveGtid(self,gtid=None,xid=None):
if xid:
__gtid = _rollback._gtid.split(':')
tid = int(__gtid[1])
uuid = str(__gtid[0])
self.__tmppackgtid(uuid,tid,1)
elif _rollback._gtid != gtid:
_rollback._gtid = gtid
def __tmppackgtid(self,uuid,tid,type):
s_uuid = struct.Struct('{}s'.format(len(uuid)))
s_header = struct.Struct('QB')
_uuid = s_uuid.pack(uuid)
_header = s_header.pack(tid,type)
_rollback._myfile.write(_uuid)
_rollback._myfile.write(_header)
def __tmppack(self,value,type):
import re
_value = re.sub(r"\s{2,}"," ",str(value).strip()) + ';'
s_value = struct.Struct('{}s'.format(len(_value)))
s_header = struct.Struct('QB')
_value = s_value.pack(_value)
_header = s_header.pack(len(_value),type)
_rollback._myfile.write(_value)
_rollback._myfile.write(_header)
def _close(self):
self.local_conn.close()
class Read(Echo):
def __init__(self,start_position=None,filename=None,pack=None):
self.__packet = pack
if filename:
self.file_data = open(filename, 'rb')
read_byte = self.read_bytes(4)
if read_byte != BINLOG_FILE_HEADER:
print 'error : Is not a standard binlog file format'
exit()
if start_position:
self.file_data.seek(start_position-4,1)
def read_int_be_by_size(self, size ,bytes=None):
'''Read a big endian integer values based on byte number'''
if bytes is None:
if size == 1:
return struct.unpack('>b', self.read_bytes(size))[0]
elif size == 2:
return struct.unpack('>h', self.read_bytes(size))[0]
elif size == 3:
return self.read_int24_be()
elif size == 4:
return struct.unpack('>i', self.read_bytes(size))[0]
elif size == 5:
return self.read_int40_be()
elif size == 8:
return struct.unpack('>l', self.read_bytes(size))[0]
else:
'''used for read new decimal'''
if size == 1:
return struct.unpack('>b', bytes[0:size])[0]
elif size == 2:
return struct.unpack('>h', bytes[0:size])[0]
elif size == 3:
return self.read_int24_be(bytes)
elif size == 4:
return struct.unpack('>i',bytes[0:size])[0]
def read_int24_be(self,bytes=None):
if bytes is None:
a, b, c = struct.unpack('BBB', self.read_bytes(3))
else:
a, b, c = struct.unpack('BBB', bytes[0:3])
res = (a << 16) | (b << 8) | c
if res >= 0x800000:
res -= 0x1000000
return res
def read_uint_by_size(self, size):
'''Read a little endian integer values based on byte number'''
if size == 1:
return self.read_uint8()
elif size == 2:
return self.read_uint16()
elif size == 3:
return self.read_uint24()
elif size == 4:
return self.read_uint32()
elif size == 5:
return self.read_uint40()
elif size == 6:
return self.read_uint48()
elif size == 7:
return self.read_uint56()
elif size == 8:
return self.read_uint64()
def read_uint24(self):
a, b, c = struct.unpack("<BBB", self.read_bytes(3))
return a + (b << 8) + (c << 16)
def read_int24(self):
a, b, c = struct.unpack("<bbb", self.read_bytes(3))
return a + (b << 8) + (c << 16)
def read_uint40(self):
a, b = struct.unpack("<BI", self.read_bytes(5))
return a + (b << 8)
def read_int40_be(self):
a, b = struct.unpack(">IB", self.read_bytes(5))
return b + (a << 8)
def read_uint48(self):
a, b, c = struct.unpack("<HHH", self.read_bytes(6))
return a + (b << 16) + (c << 32)
def read_uint56(self):
a, b, c = struct.unpack("<BHI", self.read_bytes(7))
return a + (b << 8) + (c << 24)
def read_bytes(self, count):
try:
return self.file_data.read(count) if self.__packet is None else self.__packet.read(count)
except:
return None
def read_uint64(self):
read_byte = self.read_bytes(8)
result, = struct.unpack('Q', read_byte)
return result
def read_int64(self):
read_byte = self.read_bytes(8)
result, = struct.unpack('q', read_byte)
return result
def read_uint32(self):
read_byte = self.read_bytes(4)
result, = struct.unpack('I', read_byte)
return result
def read_int32(self):
read_byte = self.read_bytes(4)
result, = struct.unpack('i', read_byte)
return result
def read_uint16(self):
read_byte = self.read_bytes(2)
result, = struct.unpack('H', read_byte)
return result
def read_int16(self):
read_byte = self.read_bytes(2)
result, = struct.unpack('h', read_byte)
return result
def read_uint8(self):
read_byte = self.read_bytes(1)
result, = struct.unpack('B', read_byte)
return result
def read_int8(self):
read_byte = self.read_bytes(1)
result, = struct.unpack('b', read_byte)
return result
def read_format_desc_event(self):
binlog_ver, = struct.unpack('H',self.read_bytes(2))
server_ver, = struct.unpack('50s',self.read_bytes(50))
create_time, = struct.unpack('I',self.read_bytes(4))
return binlog_ver,server_ver,create_time
def __add_fsp_to_time(self, time, column):
"""Read and add the fractional part of time
For more details about new date format:
"""
microsecond,read = self.__read_fsp(column)
if microsecond > 0:
time = time.replace(microsecond=microsecond)
return time,read
def __read_fsp(self, column):
read = 0
if column == 1 or column == 2:
read = 1
elif column == 3 or column == 4:
read = 2
elif column == 5 or column == 6:
read = 3
if read > 0:
microsecond = self.read_int_be_by_size(read)
if column % 2:
return int(microsecond / 10),read
else:
return microsecond,read
return 0,0
def __read_binary_slice(self, binary, start, size, data_length):
"""
Read a part of binary data and extract a number
binary: the data
start: From which bit (1 to X)
size: How many bits should be read
data_length: data size
"""
binary = binary >> data_length - (start + size)
mask = ((1 << size) - 1)
return binary & mask
def __read_datetime2(self, column):
"""DATETIME
1 bit sign (1= non-negative, 0= negative)
17 bits year*13+month (year 0-9999, month 0-12)
5 bits day (0-31)
5 bits hour (0-23)
6 bits minute (0-59)
6 bits second (0-59)
---------------------------
40 bits = 5 bytes
"""
data = self.read_int_be_by_size(5)
year_month = self.__read_binary_slice(data, 1, 17, 40)
try:
t = datetime.datetime(
year=int(year_month / 13),
month=year_month % 13,
day=self.__read_binary_slice(data, 18, 5, 40),
hour=self.__read_binary_slice(data, 23, 5, 40),
minute=self.__read_binary_slice(data, 28, 6, 40),
second=self.__read_binary_slice(data, 34, 6, 40))
except ValueError:
return None
__time,read = self.__add_fsp_to_time(t, column)
return __time,read
def __read_time2(self, column):
"""TIME encoding for nonfractional part:
1 bit sign (1= non-negative, 0= negative)
1 bit unused (reserved for future extensions)
10 bits hour (0-838)
6 bits minute (0-59)
6 bits second (0-59)
---------------------
24 bits = 3 bytes
"""
data = self.read_int_be_by_size(3)
sign = 1 if self.__read_binary_slice(data, 0, 1, 24) else -1
if sign == -1:
'''
negative integers are stored as 2's compliment
hence take 2's compliment again to get the right value.
'''
data = ~data + 1
microseconds,read = self.__read_fsp(column)
t = datetime.timedelta(
hours=sign*self.__read_binary_slice(data, 2, 10, 24),
minutes=self.__read_binary_slice(data, 12, 6, 24),
seconds=self.__read_binary_slice(data, 18, 6, 24),
microseconds= microseconds
)
return t,read+3
def __read_date(self):
time = self.read_uint24()
if time == 0: # nasty mysql 0000-00-00 dates
return None
year = (time & ((1 << 15) - 1) << 9) >> 9
month = (time & ((1 << 4) - 1) << 5) >> 5
day = (time & ((1 << 5) - 1))
if year == 0 or month == 0 or day == 0:
return None
date = datetime.date(
year=year,
month=month,
day=day
)
return date
def __read_new_decimal(self, precision,decimals):
"""Read MySQL's new decimal format introduced in MySQL 5"""
'''
Each multiple of nine digits requires four bytes, and the “leftover” digits require some fraction of four bytes.
The storage required for excess digits is given by the following table. Leftover Digits Number of Bytes
Leftover Digits Number of Bytes
0 0
1 1
2 1
3 2
4 2
5 3
6 3
7 4
8 4
'''
digits_per_integer = 9
compressed_bytes = [0, 1, 1, 2, 2, 3, 3, 4, 4, 4]
integral = (precision - decimals)
uncomp_integral = int(integral / digits_per_integer)
uncomp_fractional = int(decimals / digits_per_integer)
comp_integral = integral - (uncomp_integral * digits_per_integer)
comp_fractional = decimals - (uncomp_fractional
* digits_per_integer)
_read_bytes = (uncomp_integral*4) + (uncomp_fractional*4) + compressed_bytes[comp_fractional] + compressed_bytes[comp_integral]
_data = bytearray(self.read_bytes(_read_bytes))
value = _data[0]
if value & 0x80 != 0:
res = ""
mask = 0
else:
mask = -1
res = "-"
_data[0] = struct.pack('<B', value ^ 0x80)
size = compressed_bytes[comp_integral]
offset = 0
if size > 0:
offset += size
value = self.read_int_be_by_size(size=size,bytes=_data) ^ mask
res += str(value)
for i in range(0, uncomp_integral):
offset += 4
value = struct.unpack('>i', _data[offset-4:offset])[0] ^ mask
res += '%09d' % value
res += "."
for i in range(0, uncomp_fractional):
offset += 4
value = struct.unpack('>i', _data[offset-4:offset])[0] ^ mask
res += '%09d' % value
size = compressed_bytes[comp_fractional]
if size > 0:
value = self.read_int_be_by_size(size=size,bytes=_data[offset:]) ^ mask
res += '%0*d' % (comp_fractional, value)
return decimal.Decimal(res),_read_bytes
def __is_null(self, null_bitmap, position):
bit = null_bitmap[int(position / 8)]
if type(bit) is str:
bit = ord(bit)
return bit & (1 << (position % 8))
'''parsing for json'''
'''################################################################'''
def read_binary_json(self, length):
t = self.read_uint8()
return self.read_binary_json_type(t, length)
def read_binary_json_type(self, t, length):
large = (t in (json_type.JSONB_TYPE_LARGE_OBJECT, json_type.JSONB_TYPE_LARGE_ARRAY))
if t in (json_type.JSONB_TYPE_SMALL_OBJECT, json_type.JSONB_TYPE_LARGE_OBJECT):
return self.read_binary_json_object(length - 1, large)
elif t in (json_type.JSONB_TYPE_SMALL_ARRAY, json_type.JSONB_TYPE_LARGE_ARRAY):
return self.read_binary_json_array(length - 1, large)
elif t in (json_type.JSONB_TYPE_STRING,):
return self.read_length_coded_pascal_string(1)
elif t in (json_type.JSONB_TYPE_LITERAL,):
value = self.read_uint8()
if value == json_type.JSONB_LITERAL_NULL:
return None
elif value == json_type.JSONB_LITERAL_TRUE:
return True
elif value == json_type.JSONB_LITERAL_FALSE:
return False
elif t == json_type.JSONB_TYPE_INT16:
return self.read_int16()
elif t == json_type.JSONB_TYPE_UINT16:
return self.read_uint16()
elif t in (json_type.JSONB_TYPE_DOUBLE,):
return struct.unpack('<d', self.read(8))[0]
elif t == json_type.JSONB_TYPE_INT32:
return self.read_int32()
elif t == json_type.JSONB_TYPE_UINT32:
return self.read_uint32()
elif t == json_type.JSONB_TYPE_INT64:
return self.read_int64()
elif t == json_type.JSONB_TYPE_UINT64:
return self.read_uint64()
raise ValueError('Json type %d is not handled' % t)
def read_binary_json_type_inlined(self, t):
if t == json_type.JSONB_TYPE_LITERAL:
value = self.read_uint16()
if value == json_type.JSONB_LITERAL_NULL:
return None
elif value == json_type.JSONB_LITERAL_TRUE:
return True
elif value == json_type.JSONB_LITERAL_FALSE:
return False
elif t == json_type.JSONB_TYPE_INT16:
return self.read_int16()
elif t == json_type.JSONB_TYPE_UINT16:
return self.read_uint16()
elif t == json_type.JSONB_TYPE_INT32:
return self.read_int32()
elif t == json_type.JSONB_TYPE_UINT32:
return self.read_uint32()
raise ValueError('Json type %d is not handled' % t)
def read_binary_json_object(self, length, large):
if large:
elements = self.read_uint32()
size = self.read_uint32()
else:
elements = self.read_uint16()
size = self.read_uint16()
if size > length:
raise ValueError('Json length is larger than packet length')
if large:
key_offset_lengths = [(
self.read_uint32(), # offset (we don't actually need that)
self.read_uint16() # size of the key
) for _ in range(elements)]
else:
key_offset_lengths = [(
self.read_uint16(), # offset (we don't actually need that)
self.read_uint16() # size of key
) for _ in range(elements)]
value_type_inlined_lengths = [self.read_offset_or_inline(large)
for _ in range(elements)]
keys = [self.__read_decode(x[1]) for x in key_offset_lengths]
out = {}
for i in range(elements):
if value_type_inlined_lengths[i][1] is None:
data = value_type_inlined_lengths[i][2]
else:
t = value_type_inlined_lengths[i][0]
data = self.read_binary_json_type(t, length)
out[keys[i]] = data
return out
def read_binary_json_array(self, length, large):
if large:
elements = self.read_uint32()
size = self.read_uint32()
else:
elements = self.read_uint16()
size = self.read_uint16()
if size > length:
raise ValueError('Json length is larger than packet length')
values_type_offset_inline = [self.read_offset_or_inline(large) for _ in range(elements)]
def _read(x):
if x[1] is None:
return x[2]
return self.read_binary_json_type(x[0], length)
return [_read(x) for x in values_type_offset_inline]
def read_offset_or_inline(self,large):
t = self.read_uint8()
if t in (json_type.JSONB_TYPE_LITERAL,
json_type.JSONB_TYPE_INT16, json_type.JSONB_TYPE_UINT16):
return (t, None, self.read_binary_json_type_inlined(t))
if large and t in (json_type.JSONB_TYPE_INT32, json_type.JSONB_TYPE_UINT32):
return (t, None, self.read_binary_json_type_inlined(t))
if large:
return (t, self.read_uint32(), None)
return (t, self.read_uint16(), None)
def read_length_coded_pascal_string(self, size):
"""Read a string with length coded using pascal style.
The string start by the size of the string
"""
length = self.read_uint_by_size(size)
return self.__read_decode(length)
'''###################################################'''
def read_header(self):
'''binlog_event_header_len = 19
timestamp : 4bytes
type_code : 1bytes
server_id : 4bytes
event_length : 4bytes
next_position : 4bytes
flags : 2bytes
'''
read_byte = self.read_bytes(19)
if read_byte:
result = struct.unpack('=IBIIIH',read_byte)
_at_pos._at_pos = _at_pos._next_pos
type_code,event_length,timestamp,_at_pos._next_pos = result[1],result[3],result[0],result[4]
return type_code,event_length,time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(timestamp))
else:
return None,None,None
def read_query_event(self,event_length=None):
'''fix_part = 13:
thread_id : 4bytes
execute_seconds : 4bytes
database_length : 1bytes
error_code : 2bytes
variable_block_length : 2bytes
variable_part :
variable_block_length = fix_part.variable_block_length
database_name = fix_part.database_length
sql_statement = event_header.event_length - 19 - 13 - variable_block_length - database_length - 4
'''
read_byte = self.read_bytes(binlog_event_fix_part)
fix_result = struct.unpack('=IIBHH', read_byte)
thread_id = fix_result[0]
self.read_bytes(fix_result[4])
read_byte = self.read_bytes(fix_result[2])
database_name, = struct.unpack('{}s'.format(fix_result[2]), read_byte)
statement_length = event_length - binlog_event_fix_part - binlog_event_header_len \
- fix_result[4] - fix_result[2] - binlog_quer_event_stern
read_byte = self.read_bytes(statement_length)
_a, sql_statement, = struct.unpack('1s{}s'.format(statement_length - 1), read_byte)
return thread_id, database_name, sql_statement
def read_table_map_event(self,event_length):
'''
fix_part = 8
table_id : 6bytes
Reserved : 2bytes
variable_part:
database_name_length : 1bytes
database_name : database_name_length bytes + 1
table_name_length : 1bytes
table_name : table_name_length bytes + 1
cloums_count : 1bytes
colums_type_array : one byte per column
mmetadata_lenth : 1bytes
metadata : .....(only available in the variable length field，varchar:2bytes，text、blob:1bytes,time、timestamp、datetime: 1bytes
blob、float、decimal : 1bytes, char、enum、binary、set: 2bytes(column type id :1bytes metadatea: 1bytes))
bit_filed : 1bytes
crc : 4bytes
.........
:param event_length:
:return:
'''
self.read_bytes(table_map_event_fix_length)
database_name_length, = struct.unpack('B',self.read_bytes(1))
database_name,_a, = struct.unpack('{}ss'.format(database_name_length),self.read_bytes(database_name_length+1))
table_name_length, = struct.unpack('B',self.read_bytes(1))
table_name,_a, = struct.unpack('{}ss'.format(table_name_length),self.read_bytes(table_name_length+1))
colums = self.read_uint8()
a = '='
for i in range(colums):
a += 'B'
colums_type_id_list = list(struct.unpack(a,self.read_bytes(colums)))
self.read_bytes(1)
metadata_dict = {}
bytes = 1
for idex in range(len(colums_type_id_list)):
if colums_type_id_list[idex] in [column_type_dict.MYSQL_TYPE_VAR_STRING,column_type_dict.MYSQL_TYPE_VARCHAR]:
metadata = self.read_uint16()
metadata_dict[idex] = 2 if metadata > 255 else 1
bytes += 2
elif colums_type_id_list[idex] in [column_type_dict.MYSQL_TYPE_BLOB,column_type_dict.MYSQL_TYPE_MEDIUM_BLOB,column_type_dict.MYSQL_TYPE_LONG_BLOB,
column_type_dict.MYSQL_TYPE_TINY_BLOB,column_type_dict.MYSQL_TYPE_JSON]:
metadata = self.read_uint8()
metadata_dict[idex] = metadata
bytes += 1
elif colums_type_id_list[idex] in [column_type_dict.MYSQL_TYPE_TIMESTAMP2 ,column_type_dict.MYSQL_TYPE_DATETIME2 ,column_type_dict.MYSQL_TYPE_TIME2]:
metadata = self.read_uint8()
metadata_dict[idex] = metadata
bytes += 1
elif colums_type_id_list[idex] == column_type_dict.MYSQL_TYPE_NEWDECIMAL:
precision = self.read_uint8()
decimals = self.read_uint8()
metadata_dict[idex] = [precision,decimals]
bytes += 2
elif colums_type_id_list[idex] in [column_type_dict.MYSQL_TYPE_FLOAT ,column_type_dict.MYSQL_TYPE_DOUBLE]:
metadata = self.read_uint8()
metadata_dict[idex] = metadata
bytes += 1
elif colums_type_id_list[idex] in [column_type_dict.MYSQL_TYPE_STRING]:
_type,metadata, = struct.unpack('=BB',self.read_bytes(2))
colums_type_id_list[idex] = _type
metadata_dict[idex] = metadata
bytes += 2
if self.__packet is None:
self.file_data.seek(event_length - binlog_event_header_len - table_map_event_fix_length - 5 - database_name_length
- table_name_length - colums - bytes,1)
return database_name,table_name,colums_type_id_list,metadata_dict
def read_gtid_event(self,event_length=None):
'''