[PATCH 3/3] MINOR: Add support for UUIDv7 to the `uuid` sample fetch

[Tim Duesterhus]

This adds support for UUIDv7 to the existing `uuid` sample fetch that was added
in 8a694b859cf98f8b0855b4aa5a50ebf64b501215.
---
 doc/configuration.txt |  3 ++-
 src/sample.c          | 40 +++++++++++++++++++++++++++++-----------
 2 files changed, 31 insertions(+), 12 deletions(-)

diff --git a/doc/configuration.txt b/doc/configuration.txt
index d2d654c191..16094c194a 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -21306,7 +21306,8 @@ txn.sess_term_state : string
 uuid([<version>]) : string
   Returns a UUID following the RFC4122 standard. If the version is not
   specified, a UUID version 4 (fully random) is returned.
-  Currently, only version 4 is supported.
+
+  Versions 4 and 7 are supported.
 
 var(<var-name>[,<default>]) : undefined
   Returns a variable with the stored type. If the variable is not set, the
diff --git a/src/sample.c b/src/sample.c
index 8daa92424d..43ab003529 100644
--- a/src/sample.c
+++ b/src/sample.c
@@ -4781,10 +4781,15 @@ static int smp_check_uuid(struct arg *args, char **err)
        if (!args[0].type) {
                args[0].type = ARGT_SINT;
                args[0].data.sint = 4;
-       }
-       else if (args[0].data.sint != 4) {
-               memprintf(err, "Unsupported UUID version: '%lld'", 
args[0].data.sint);
-               return 0;
+       } else {
+               switch (args[0].data.sint) {
+               case 4:
+               case 7:
+                       break;
+               default:
+                       memprintf(err, "Unsupported UUID version: '%lld'", 
args[0].data.sint);
+                       return 0;
+               }
        }
 
        return 1;
@@ -4793,16 +4798,29 @@ static int smp_check_uuid(struct arg *args, char **err)
 // Generate a RFC4122 UUID (default is v4 = fully random)
 static int smp_fetch_uuid(const struct arg *args, struct sample *smp, const 
char *kw, void *private)
 {
-       if (args[0].data.sint == 4 || !args[0].type) {
+       long long int type = -1;
+
+       if (!args[0].type) {
+               type = 4;
+       } else {
+               type = args[0].data.sint;
+       }
+
+       switch (type) {
+       case 4:
                ha_generate_uuid_v4(&trash);
-               smp->data.type = SMP_T_STR;
-               smp->flags = SMP_F_VOL_TEST | SMP_F_MAY_CHANGE;
-               smp->data.u.str = trash;
-               return 1;
+               break;
+       case 7:
+               ha_generate_uuid_v7(&trash);
+               break;
+       default:
+               return 0;
        }
 
-       // more implementations of other uuid formats possible here
-       return 0;
+       smp->data.type = SMP_T_STR;
+       smp->flags = SMP_F_VOL_TEST | SMP_F_MAY_CHANGE;
+       smp->data.u.str = trash;
+       return 1;
 }
 
 /* Check if QUIC support was compiled and was not disabled by "no-quic" global 
option */
-- 
2.43.2