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MEDIUM: promex: Dump backends extra counters if requested

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Dump extra counter for the backend. We loop on stats modules and dumped all
concerned counters. The module name is reported with the "mod" label.
This commit is contained in:
Christopher Faulet 2024-01-29 16:41:42 +01:00
parent b413160296
commit 6f1fb53cc1
1 changed files with 61 additions and 0 deletions
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61
addons/promex/service-prometheus.c
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@ -1070,6 +1070,67 @@ static int promex_dump_back_metrics(struct appctx *appctx, struct htx *htx)
ctx->px = proxies_list;
}
/* Skip extra counters */
if (!(ctx->flags & PROMEX_FL_EXTRA_COUNTERS))
goto end;
if (!ctx->mod) {
/* no restart point, get the first module in the list */
ctx->mod = LIST_NEXT(&stats_module_list[STATS_DOMAIN_PROXY], typeof(ctx->mod), list);
ctx->mod_field_num = 0;
}
list_for_each_entry_from(ctx->mod, &stats_module_list[STATS_DOMAIN_PROXY], list) {
void *counters;
if (!(stats_px_get_cap(ctx->mod->domain_flags) & STATS_PX_CAP_BE)) {
ctx->field_num += ctx->mod->stats_count;
ctx->mod_field_num = 0;
continue;
}
for (;ctx->mod_field_num < ctx->mod->stats_count; ctx->mod_field_num++) {
while (ctx->px) {
struct promex_label labels[PROMEX_MAX_LABELS-1] = {};
struct promex_metric metric;
px = ctx->px;
labels[0].name = ist("proxy");
labels[0].value = ist2(px->id, strlen(px->id));
labels[1].name = ist("mod");
labels[1].value = ist2(ctx->mod->name, strlen(ctx->mod->name));
/* skip the disabled proxies, global frontend and non-networked ones */
if ((px->flags & PR_FL_DISABLED) || px->uuid <= 0 || !(px->cap & PR_CAP_BE))
goto next_px2;
counters = EXTRA_COUNTERS_GET(px->extra_counters_be, ctx->mod);
if (!ctx->mod->fill_stats(counters, stats + ctx->field_num, &ctx->mod_field_num))
return -1;
val = stats[ctx->field_num + ctx->mod_field_num];
metric.type = ((val.type == FN_GAUGE) ? PROMEX_MT_GAUGE : PROMEX_MT_COUNTER);
if (!promex_dump_metric(appctx, htx, prefix,
ist2(ctx->mod->stats[ctx->mod_field_num].name, strlen(ctx->mod->stats[ctx->mod_field_num].name)),
ist2(ctx->mod->stats[ctx->mod_field_num].desc, strlen(ctx->mod->stats[ctx->mod_field_num].desc)),
&metric, &val, labels, &out, max))
goto full;
next_px2:
ctx->px = px->next;
}
ctx->flags |= PROMEX_FL_METRIC_HDR;
ctx->px = proxies_list;
}
ctx->field_num += ctx->mod->stats_count;
ctx->mod_field_num = 0;
}
end:
if (out.len) {
if (!htx_add_data_atonce(htx, out))