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MINOR: stream: add a sample fetch to get the number of connection retries

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"txn.conn_retries" can now be used to get the number of connection
retries. This value is only stable once the connection is fully
established. For HTTP sessions, L7-retries must also be passed.
This commit is contained in:
Christopher Faulet 2023-11-28 13:59:59 +01:00
parent 8f56552862
commit b1eb3bc9a2
2 changed files with 21 additions and 0 deletions
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7
doc/configuration.txt
View file

@ -20103,6 +20103,12 @@ thread : integer
the function, between 0 and (global.nbthread-1). This is useful for logging
and debugging purposes.
txn.conn_retries : integer
Returns the the number of connection retries experienced by this session when
trying to connect to the server. This value is subject to change while the
connection is not fully established. For HTTP connections, the value may be
affected by L7 retries.
txn.sess_term_state : string
Retruns the TCP or HTTP session termination state, as reported in the log. It
is a 2-characters string, The final session state followed by the event which
@ -24040,6 +24046,7 @@ Please refer to the table below for currently defined variables :
| H | %r | http_request | string |
+---+------+------------------------------------------------------+---------+
| | %rc | retries | numeric |
| | | %[txn.conn_retries] | |
+---+------+------------------------------------------------------+---------+
| | %rt | request_counter (HTTP req or TCP session) | numeric |
+---+------+------------------------------------------------------+---------+

14
src/stream.c
View file

@ -3989,6 +3989,19 @@ static int smp_fetch_sess_term_state(const struct arg *args, struct sample *smp,
return 1;
}
static int smp_fetch_conn_retries(const struct arg *args, struct sample *smp, const char *km, void *private)
{
smp->flags = SMP_F_VOL_TXN;
smp->data.type = SMP_T_SINT;
if (!smp->strm)
return 0;
if (!sc_state_in(smp->strm->scb->state, SC_SB_DIS|SC_SB_CLO))
smp->flags |= SMP_F_VOL_TEST;
smp->data.u.sint = smp->strm->conn_retries;
return 1;
}
/* Note: must not be declared <const> as its list will be overwritten.
* Please take care of keeping this list alphabetically sorted.
*/
@ -3998,6 +4011,7 @@ static struct sample_fetch_kw_list smp_kws = {ILH, {
{ "cur_tunnel_timeout", smp_fetch_cur_tunnel_timeout, 0, NULL, SMP_T_SINT, SMP_USE_BKEND, },
{ "last_rule_file", smp_fetch_last_rule_file, 0, NULL, SMP_T_STR, SMP_USE_INTRN, },
{ "last_rule_line", smp_fetch_last_rule_line, 0, NULL, SMP_T_SINT, SMP_USE_INTRN, },
{ "txn.conn_retries", smp_fetch_conn_retries, 0, NULL, SMP_T_SINT, SMP_USE_L4SRV, },
{ "txn.sess_term_state",smp_fetch_sess_term_state, 0, NULL, SMP_T_STR, SMP_USE_INTRN, },
{ NULL, NULL, 0, 0, 0 },
}};