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MINOR: promex: test applet resume in stress mode

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Implement a stress mode with force yield for promex applet each time a
metric is displayed. This is implemented by returning 0 in
promex_dump_ts() each time the output buffer is not empty.

To test this, haproxy must be compiled with DEBUG_STRESS and the
following configuration must be used :

  global
    stress-level 1
This commit is contained in:
Amaury Denoyelle 2026-02-24 17:05:37 +01:00
parent 9db62d408a
commit 00a106059e
1 changed files with 5 additions and 0 deletions
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5
addons/promex/service-prometheus.c
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@ -36,6 +36,7 @@
#include <haproxy/stats.h>
#include <haproxy/stconn.h>
#include <haproxy/stream.h>
#include <haproxy/stress.h>
#include <haproxy/task.h>
#include <haproxy/tools.h>
#include <haproxy/version.h>
@ -347,6 +348,10 @@ static int promex_dump_ts(struct appctx *appctx, struct ist prefix,
istcat(&n, prefix, PROMEX_MAX_NAME_LEN);
istcat(&n, name, PROMEX_MAX_NAME_LEN);
/* In stress mode, force yielding on each metric. */
if (STRESS_RUN1(istlen(*out), 0))
goto full;
if ((ctx->flags & PROMEX_FL_METRIC_HDR) &&
!promex_dump_ts_header(n, desc, type, out, max))
goto full;