Attachment 314770 Details for Bug 233642 – new readNsState.py

new readNsState.py

readNsState.py (text/plain), 2.91 KB, created by Rich Megginson on 2008-08-22 02:18:07 UTC

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Creator: Rich Megginson

Created: 2008-08-22 02:18:07 UTC

Size: 2.91 KB

patch

obsolete

>#!/usr/bin/env python
>
>import sys
>from struct import pack, unpack, calcsize
>import base64
>import time
>from datetime import timedelta
>
>def flipend(end):
>    if end == '<':
>        return '>'
>    if end == '>':
>        return '<'
>
>def printGenState(dn, nsstate, flip):
>    if pack('<h', 1) == pack('=h',1):
>        print "Little Endian"
>        end = '<'
>        if flip:
>            end = flipend(end)
>    elif pack('>h', 1) == pack('=h',1):
>        print "Big Endian"
>        end = '>'
>        if flip:
>            end = flipend(end)
>    else:
>        print "Unknown Endian"
>        sys.exit(-1) # blow up
>    print "For replica", dn
>    thelen = len(nsstate)
>    if thelen <= 20:
>        pad = 2 # padding for short H values
>        timefmt = 'I' # timevals are unsigned 32-bit int
>    else:
>        pad = 6 # padding for short H values
>        timefmt = 'Q' # timevals are unsigned 64-bit int
>
>    base_fmtstr = "H%dx3%sH%dx" % (pad, timefmt, pad)
>    print "  fmtstr=[%s]" % base_fmtstr
>    print "  size=%d" % calcsize(base_fmtstr)
>    print "  len of nsstate is", thelen
>    fmtstr = end + base_fmtstr
>    (rid, sampled_time, local_offset, remote_offset, seq_num) = unpack(fmtstr, nsstate)
>    now = int(time.time())
>    tdiff = now-sampled_time
>    wrongendian = False
>    try:
>        tdelta = timedelta(seconds=tdiff)
>        wrongendian = tdelta.days > 10*365
>    except OverflowError: # int overflow
>        wrongendian = True
>    # if the sampled time is more than 20 years off, this is
>    # probably the wrong endianness
>    if wrongendian:
>        print "The difference in days is", tdiff/86400
>        print "This is probably the wrong bit-endianness - flipping"
>        end = flipend(end)
>        fmtstr = end + base_fmtstr
>        (rid, sampled_time, local_offset, remote_offset, seq_num) = unpack(fmtstr, nsstate)
>        tdiff = now-sampled_time
>        tdelta = timedelta(seconds=tdiff)
>    print """  CSN generator state:
>    Replica ID    : %d
>    Sampled Time  : %d
>    Gen as csn    : %08x%04d%04d0000
>    Time as str   : %s
>    Local Offset  : %d
>    Remote Offset : %d
>    Seq. num      : %d
>    System time   : %s
>    Diff in sec.  : %d
>    Day:sec diff  : %d:%d
>""" % (rid, sampled_time, sampled_time, seq_num, rid, time.ctime(sampled_time), local_offset,
>       remote_offset, seq_num, time.ctime(now), tdiff, tdelta.days, tdelta.seconds)
>
>def main():
>    dn = ''
>    nsstate = ''
>    if len(sys.argv) > 2:
>        flip = True
>    else:
>        flip = False
>    for line in open(sys.argv[1]):
>        if line.startswith("dn: "):
>            dn = line[4:].strip()
>        if line.startswith("nsState:: ") and dn.startswith("cn=replica"):
>            b64val = line[10:].strip()
>            print "nsState is", b64val
>            nsstate = base64.decodestring(b64val)
>            printGenState(dn, nsstate, flip)
>    if not nsstate:
>        print "Error: nsstate not found in file", sys.argv[1]
>        sys.exit(1)
>
>if __name__ == '__main__':
>    main()

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Attachments on bug 233642: 308969 | 310040 | 310083 | 310193 | 310196 | 310201 | 310525 | 310526 | 314403 | 314404 | 314765 | 314770