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MINOR: sample: Add "quic_enabled" sample fetch

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This sample fetch returns a boolean. True if the support for QUIC transport
protocol was built and if this protocol was not disabled by "no-quic"
global option.

Must be backported to 2.7.
This commit is contained in:
Frdric Lcaille 2023-01-12 17:55:45 +01:00 committed by Willy Tarreau
parent 12a0317fed
commit 33d11c464f
2 changed files with 22 additions and 0 deletions
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8
doc/configuration.txt
View File

@ -18846,6 +18846,14 @@ queue([<backend>]) : integer
possible action could be to reject new users but still accept old ones. See
also the "avg_queue", "be_conn", and "be_sess_rate" fetches.
quic_enabled : boolean
Warning: QUIC support in HAProxy is currently experimental. Configuration may
change without deprecation in the future.
Return true when the support for QUIC transport protocol was compiled and
if this procotol was not disabled by "no-quic" global option. See also "no-quic"
global option.
rand([<range>]) : integer
Returns a random integer value within a range of <range> possible values,
starting at zero. If the range is not specified, it defaults to 2^32, which

14
src/sample.c
View File

@ -4393,6 +4393,19 @@ static int smp_fetch_uuid(const struct arg *args, struct sample *smp, const char
return 0;
}
/* Check if QUIC support was compiled and was not disabled by "no-quic" global option */
static int smp_fetch_quic_enabled(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
smp->data.type = SMP_T_BOOL;
smp->flags = 0;
#ifdef USE_QUIC
smp->data.u.sint = !(global.tune.options & GTUNE_NO_QUIC);
#else
smp->data.u.sint = 0;
#endif
return smp->data.u.sint;
}
/* Note: must not be declared <const> as its list will be overwritten.
* Note: fetches that may return multiple types must be declared as the lowest
* common denominator, the type that can be casted into all other ones. For
@ -4407,6 +4420,7 @@ static struct sample_fetch_kw_list smp_kws = {ILH, {
{ "hostname", smp_fetch_hostname, 0, NULL, SMP_T_STR, SMP_USE_CONST },
{ "nbproc", smp_fetch_nbproc,0, NULL, SMP_T_SINT, SMP_USE_CONST },
{ "proc", smp_fetch_proc, 0, NULL, SMP_T_SINT, SMP_USE_CONST },
{ "quic_enabled", smp_fetch_quic_enabled, 0, NULL, SMP_T_BOOL, SMP_USE_CONST },
{ "thread", smp_fetch_thread, 0, NULL, SMP_T_SINT, SMP_USE_CONST },
{ "rand", smp_fetch_rand, ARG1(0,SINT), NULL, SMP_T_SINT, SMP_USE_CONST },
{ "stopping", smp_fetch_stopping, 0, NULL, SMP_T_BOOL, SMP_USE_INTRN },