MINOR: global: add experimental shm-stats-file option

Signed-off-by: Vincent Gramer <vgramer@haproxy.com>

Author: vgramer

.aspell.yml

@@ -166,6 +166,7 @@ allowed:
   - scrollbar
   - scss
   - searchselect
+  - shm
   - sig
   - sni
   - spammy

config-parser/section-parsers.go

@@ -479,6 +479,7 @@ func (p *configParser) getGlobalParser() *Parsers { //nolint: maintidx
 	addParser(parser, &sequence, &simple.Word{Name: "dns-accept-family"})
 	addParser(parser, &sequence, &simple.Word{Name: "acme.scheduler"})
 	addParser(parser, &sequence, &simple.Number{Name: "stress-level"})
+	addParser(parser, &sequence, &simple.Word{Name: "shm-stats-file"})
 	// the ConfigSnippet must be at the end to parsers load order to ensure
 	// the overloading of any option has been declared previously
 	addParser(parser, &sequence, &parsers.ConfigSnippet{})

config-parser/tests/configs/haproxy.cfg.go

@@ -73,6 +73,7 @@ global
   force-cfg-parser-pause 1s
   warn-blocked-traffic-after 50ms
   dns-accept-family ipv4,ipv6
+  shm-stats-file some_file
   # random comment before snippet
   ###_config-snippet_### BEGIN
   tune.ssl.default-dh-param 2048

configuration/global.go

@@ -2325,6 +2325,12 @@ func ParseGlobalSection(p parser.Parser) (*models.Global, error) { //nolint:goco
 	}
 	global.DNSAcceptFamily = dnsAcceptFamily
 
+	shmStatsFile, err := parseStringOption(p, "shm-stats-file")
+	if err != nil {
+		return nil, err
+	}
+	global.ShmStatsFile = shmStatsFile
+
 	envOptions, err := parseEnvironmentOptions(p)
 	if err != nil {
 		return nil, err
@@ -3235,6 +3241,10 @@ func SerializeGlobalSection(p parser.Parser, data *models.Global, opt *options.C
 		return err
 	}
 
+	if err := serializeStringOption(p, "shm-stats-file", data.ShmStatsFile); err != nil {
+		return err
+	}
+
 	if err := serializeStringOption(p, "description", data.Description); err != nil {
 		return err
 	}

models/global_base.go

@@ -2541,6 +2541,10 @@ definitions:
         type: string
         x-display-name: OS Capabilities
         x-omitempty: true
+      shm_stats_file:
+        pattern: ^[^\s]+$
+        type: string
+        x-display-name: Shared Memory Statistics File (EXPERIMENTAL)
       ssl_options:
         $ref: '#/definitions/ssl_options'
       stats_file:

models/global_base_compare_test.go

@@ -367,6 +367,10 @@ global_base:
       pattern: ^[^\s]+$
       type: string
       x-display-name: DNS accept family
+    shm_stats_file:
+      type: string
+      pattern: '^[^\s]+$'
+      x-display-name: Shared Memory Statistics File (EXPERIMENTAL)
     environment_options:
       $ref: "#/definitions/environment_options"
     performance_options: