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MINOR: connection: Add a connection error code sample fetch for backend side

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The bc_conn_err and bc_conn_err_str sample fetches give the status of
the connection on the backend side. The error codes and error messages
are the same than the ones that can be raised by the fc_conn_err fetch.
This commit is contained in:
Remi Tricot-Le Breton 2021-09-01 15:52:15 +02:00 committed by William Lallemand
parent 163cdeba37
commit 942c167229
2 changed files with 25 additions and 2 deletions

11
doc/configuration.txt
View File

@ -17733,6 +17733,17 @@ table may be specified with the "sc*" form, in which case the currently
tracked key will be looked up into this alternate table instead of the table
currently being tracked.
bc_conn_err : integer
Returns the ID of the error that might have occurred on the current backend
connection. See the "fc_conn_err_str" fetch for a full list of error codes
and their corresponding error message.
bc_conn_err_str : string
Returns an error message describing what problem happened on the current
backend connection, resulting in a connection failure. See the
"fc_conn_err_str" fetch for a full list of error codes and their
corresponding error message.
bc_dst : ip
This is the destination ip address of the connection on the server side,
which is the server address HAProxy connected to. It is of type IP and works

16
src/connection.c
View File

@ -1503,7 +1503,12 @@ int smp_fetch_fc_conn_err(const struct arg *args, struct sample *smp, const char
{
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (obj_type(smp->sess->origin) == OBJ_TYPE_CHECK)
conn = (kw[0] == 'b') ? cs_conn(__objt_check(smp->sess->origin)->cs) : NULL;
else
conn = (kw[0] != 'b') ? objt_conn(smp->sess->origin) :
smp->strm ? cs_conn(objt_cs(smp->strm->si[1].end)) : NULL;
if (!conn)
return 0;
@ -1525,7 +1530,12 @@ int smp_fetch_fc_conn_err_str(const struct arg *args, struct sample *smp, const
struct connection *conn;
const char *err_code_str;
conn = objt_conn(smp->sess->origin);
if (obj_type(smp->sess->origin) == OBJ_TYPE_CHECK)
conn = (kw[0] == 'b') ? cs_conn(__objt_check(smp->sess->origin)->cs) : NULL;
else
conn = (kw[0] != 'b') ? objt_conn(smp->sess->origin) :
smp->strm ? cs_conn(objt_cs(smp->strm->si[1].end)) : NULL;
if (!conn)
return 0;
@ -1560,6 +1570,8 @@ static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
{ "fc_pp_unique_id", smp_fetch_fc_pp_unique_id, 0, NULL, SMP_T_STR, SMP_USE_L4CLI },
{ "fc_conn_err", smp_fetch_fc_conn_err, 0, NULL, SMP_T_SINT, SMP_USE_L4CLI },
{ "fc_conn_err_str", smp_fetch_fc_conn_err_str, 0, NULL, SMP_T_STR, SMP_USE_L4CLI },
{ "bc_conn_err", smp_fetch_fc_conn_err, 0, NULL, SMP_T_SINT, SMP_USE_L4SRV },
{ "bc_conn_err_str", smp_fetch_fc_conn_err_str, 0, NULL, SMP_T_STR, SMP_USE_L4SRV },
{ /* END */ },
}};