Aleks,

On 5/31/21 9:35 PM, Aleksandar Lazic wrote:
While I try to get the stream id from spoa I recognized that there is no fetch method for the streamID.

Attached a patch which adds the fetch sample for the stream id.
I assume it could be back ported up to version 2.0

The backporting information should be part of the commit message. But I don't think it's going to be backported that far.

Further comments inline.

From 15a2026c495e64d8165a13a3c8a4e5e19ad7e8d6 Mon Sep 17 00:00:00 2001
From: Alexandar Lazic <[email protected]>
Date: Mon, 31 May 2021 21:28:56 +0200
Subject: [PATCH] MINOR: sample: fetch stream_uniq_id

This fetch sample allows to get the current Stream ID for the
current session.

---
 doc/configuration.txt                  | 13 ++++++----
 reg-tests/sample_fetches/stream_id.vtc | 33 ++++++++++++++++++++++++++
 src/sample.c                           | 14 +++++++++++
 3 files changed, 55 insertions(+), 5 deletions(-)
 create mode 100644 reg-tests/sample_fetches/stream_id.vtc

diff --git a/doc/configuration.txt b/doc/configuration.txt
index 11c38945c..7eb7e29cd 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -17433,11 +17433,6 @@ rand([<range>]) : integer
   needed to take some routing decisions for example, or just for debugging
   purposes. This random must not be used for security purposes.
-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.
-

Good catch, but please split moving this around into a dedicated patch (DOC).

 srv_conn([<backend>/]<server>) : integer
   Returns an integer value corresponding to the number of currently established
   connections on the designated server, possibly including the connection being
@@ -17514,6 +17509,9 @@ stopping : boolean
 str(<string>) : string
   Returns a string.
+stream_uniq_id : integer
+  Returns the uniq stream id.
+

This explanation is not useful to the reader (even I don't understand it).

 table_avl([<table>]) : integer
   Returns the total number of available entries in the current proxy's
   stick-table or in the designated stick-table. See also table_cnt.
@@ -17528,6 +17526,11 @@ thread : integer
   the function, between 0 and (global.nbthread-1). This is useful for logging
   and debugging purposes.
+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.
+
 var(<var-name>) : undefined
   Returns a variable with the stored type. If the variable is not set, the
   sample fetch fails. The name of the variable starts with an indication
diff --git a/src/sample.c b/src/sample.c
index 09c272c48..5d3b06b10 100644
--- a/src/sample.c
+++ b/src/sample.c
@@ -4210,6 +4210,18 @@ static int smp_fetch_uuid(const struct arg *args, struct 
sample *smp, const char
        return 0;
 }
+/* returns the stream uniq_id */
+static int
+smp_fetch_stream_uniq_id(const struct arg *args, struct sample *smp, const 
char *kw, void *private)

I believe the 'static int' should go on the same line.

+{
+       if (!smp->strm)
+               return 0;
+
+       smp->data.type = SMP_T_SINT;
+       smp->data.u.sint = smp->strm->uniq_id;
+       return 1;
+}
+
 /* 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
@@ -4243,6 +4255,8 @@ static struct sample_fetch_kw_list smp_kws = {ILH, {
        { "bin",  smp_fetch_const_bin,  ARG1(1,STR),  smp_check_const_bin , 
SMP_T_BIN,  SMP_USE_CONST },
        { "meth", smp_fetch_const_meth, ARG1(1,STR),  smp_check_const_meth, 
SMP_T_METH, SMP_USE_CONST },
+ { "stream_uniq_id", smp_fetch_stream_uniq_id, 0, NULL, SMP_T_SINT, SMP_USE_INTRN },
+

I believe 'SMP_USE_INTRN' is not correct. I believe you need 'SMP_SRC_L4CLI', but don't quote me on that.

        { /* END */ },
 }};
--
2.25.1

Best regards
Tim Düsterhus

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