| 1 | #!/usr/bin/env python |
| 2 |
|
| 3 | import sys |
| 4 | import os |
| 5 | import time |
| 6 | import ctypes |
| 7 | import random |
| 8 |
|
| 9 | def exists(f): |
| 10 | return os.path.isfile(f) or os.path.isdir(f) |
| 11 |
|
| 12 | def milli(): |
| 13 | return int(round(time.time() * 1000)) |
| 14 |
|
| 15 | def enc(string): |
| 16 | return string.encode("latin-1") |
| 17 |
|
| 18 | def ushort(n): |
| 19 | return ctypes.c_ushort(n) |
| 20 |
|
| 21 | def uchar(n): |
| 22 | return ctypes.c_ubyte(n) |
| 23 |
|
| 24 | def ulonglong(n): |
| 25 | return ctypes.c_ulonglong(n) |
| 26 |
|
| 27 | def s(n=20): |
| 28 | l = int(random.random()*n) |
| 29 | st = "" |
| 30 | for i in range(0, l): |
| 31 | c = 97+int(random.random()*26) |
| 32 | st += chr(c) |
| 33 | return st |
| 34 |
|
| 35 | if __name__ == "__main__": |
| 36 | try: |
| 37 | out = sys.argv[1] |
| 38 | except: |
| 39 | print("must provide an out location") |
| 40 | exit(1) |
| 41 |
|
| 42 | version = uchar(1) |
| 43 | queue_time = ulonglong(milli()) |
| 44 | open_statement = uchar(0) |
| 45 | close_statement = uchar(1) |
| 46 | open_event = uchar(2) |
| 47 | close_event = uchar(3) |
| 48 |
|
| 49 | verbosity = uchar(0) |
| 50 |
|
| 51 | start = milli() |
| 52 |
|
| 53 | try: |
| 54 | f = open(out, "wb") |
| 55 |
|
| 56 | f.write(version) |
| 57 | f.write(queue_time) |
| 58 | f.write(open_event) |
| 59 | for i in range(0, 50000): |
| 60 | ts = ulonglong(milli()) |
| 61 |
|
| 62 | tag = enc("hello")#enc(s(10)) |
| 63 | tag_len = uchar(len(tag)) |
| 64 |
|
| 65 | message = enc(s(100)) |
| 66 | message_len = ushort(len(message)) |
| 67 | f.write(open_statement) |
| 68 | f.write(ts) |
| 69 | f.write(verbosity) |
| 70 | f.write(tag_len) |
| 71 | f.write(tag) |
| 72 | f.write(message_len) |
| 73 | f.write(message) |
| 74 | f.write(close_statement) |
| 75 | f.write(close_event) |
| 76 |
|
| 77 | finally: |
| 78 | f.close() |
| 79 | print("file written with size {0} in {1} seconds".format(os.stat(out).st_size, (milli()-start)/1000)) |
| 80 |
|
| 81 |
|
| 82 |
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