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MINOR: halog: add some help on the command line

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This commit is contained in:
Willy Tarreau 2012-01-23 08:15:51 +01:00
parent f8e8b76ed3
commit 615674cdec
1 changed files with 44 additions and 3 deletions
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47
contrib/halog/halog.c
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@ -123,19 +123,58 @@ void filter_graphs(const char *accept_field, const char *time_field, struct time
void filter_output_line(const char *accept_field, const char *time_field, struct timer **tptr);
void filter_accept_holes(const char *accept_field, const char *time_field, struct timer **tptr);
void die(const char *msg)
void usage(FILE *output, const char *msg)
{
fprintf(stderr,
fprintf(output,
"%s"
"Usage: halog [-q] [-c] [-v] {-gt|-pct|-st|-tc|-srv|-u|-uc|-ue|-ua|-ut|-uao|-uto}\n"
"Usage: halog [-h|--help] for long help\n"
" halog [-q] [-c] [-v] {-gt|-pct|-st|-tc|-srv|-u|-uc|-ue|-ua|-ut|-uao|-uto}\n"
" [-s <skip>] [-e|-E] [-H] [-rt|-RT <time>] [-ad <delay>] [-ac <count>]\n"
" [-Q|-QS] [-tcn|-TCN <termcode>] [ -hs|-HS [min][:[max]] ] < log\n"
"\n",
msg ? msg : ""
);
}
void die(const char *msg)
{
usage(stderr, msg);
exit(1);
}
void help()
{
usage(stdout, NULL);
printf(
"Input filters (several filters may be combined) :\n"
" -H only match lines containing HTTP logs (ignore TCP)\n"
" -E only match lines without any error (no 5xx status)\n"
" -e only match lines with errors (status 5xx or negative)\n"
" -rt|-RT <time> only match response times larger|smaller than <time>\n"
" -Q|-QS only match queued requests (any queue|server queue)\n"
" -tcn|-TCN <code> only match requests with/without termination code <code>\n"
" -hs|-HS <[min][:][max]> only match requests with HTTP status codes within/not\n"
" within min..max. Any of them may be omitted. Exact\n"
" code is checked for if no ':' is specified.\n"
"Modifiers\n"
" -v invert the input filtering condition\n"
" -q don't report errors/warnings\n"
"\n"
"Output filters - only one may be used at a time\n"
" -c only report the number of lines that would have been printed\n"
" -pct output connect and response times percentiles\n"
" -st output number of requests per HTTP status code\n"
" -tc output number of requests per termination code (2 chars)\n"
" -srv output statistics per server (time, requests, errors)\n"
" -u* output statistics per URL (time, requests, errors)\n"
" Additional characters indicate the output sorting key :\n"
" -u : by URL, -uc : request count, -ue : error count\n"
" -ua : average response time, -uto : average total time\n"
" -uao, -uto: average times computed on valid ('OK') requests\n"
);
exit(0);
}
/* return pointer to first char not part of current field starting at <p>. */
@ -600,6 +639,8 @@ int main(int argc, char **argv)
die("Fatal: missing output file name.\n");
output_file = argv[1];
}
else if (strcmp(argv[0], "-h") == 0 || strcmp(argv[0], "--help") == 0)
help();
argc--;
argv++;
}