Hi Everyone! I am trying to parse binary ELOG file, but have no success. Is there someone who know something about ELOG file format? At now I'm trying to get the unix timestamp of the each event.
I had found small python script here: https://github.com/theleos88/vpp-bench/wiki/ELOG ...but it's not work for me. The event definition in my case looks like: > ELOG_TYPE_DECLARE (el) = { > .format = "test [%d]: event", > .format_args = "i4", > }; Just for test this event prints always number "234" For parsing the binary log I had written the code based on the script I have mentioned above: #!/usr/bin/python -d > import io > import binascii > import os > import mmap > import itertools > import struct > import sys > import time > infil = '/tmp/test.log' > def parse_int(itr, size): > int_str = [] > for i in range(0,size): > int_str.append( next(itr)) > d = b"".join(int_str) > return int(binascii.hexlify(d), 16) > def parse_double(itr): > int_str = [] > for i in range(0,8): > int_str.append(next(itr)) > d = b"".join(int_str) > return struct.unpack('d', d)[0] > if __name__ == '__main__': > with open(infil, 'rb') as f: > # memory-map the file, size 0 means whole file > mm = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ) > itr = iter(mm) > for b in itr: > if (b == b'@'): > try: > e = parse_int(itr, 3) # Binary file dependent > d = parse_int(itr, 4) # Data > ts = parse_double(itr) # Timestamp > print ("Id:",e,"Data",d,"TS",ts) > except: > print ("fail") > mm.close() The script output looks very strange: ('Id:', 12583082, 'Data', 4077750898, 'TS', -2.033971772667215e+189) ('Id:', 4913710, 'Data', 234, 'TS', 6.36910374265963e-272) ('Id:', 4946789, 'Data', 234, 'TS', -3.781860196468732e+215) ('Id:', 4980415, 'Data', 234, 'TS', 2.8913004726712464e+252) ('Id:', 5014033, 'Data', 234, 'TS', 1.0459787848697367e-194) ('Id:', 5047603, 'Data', 234, 'TS', 1.8541854501616871e+87) ('Id:', 5081197, 'Data', 234, 'TS', -1.9417949536011382e+216) ('Id:', 5114754, 'Data', 234, 'TS', -1.1766415030126902e-236) ('Id:', 5148346, 'Data', 234, 'TS', 2.805116355676246e-134) ('Id:', 5181997, 'Data', 234, 'TS', 1.2734961345447485e-257) fail 1) It seems that the first and the last line of the log has a different format (???). 2) I can't understand the format of the timestamp field (or these 8 bytes is not a timestamp). 3) Data prints correctly. Could anyone help me please? Thanks in advance, Aleksander
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