tmp: review

- default timeouts retrieved once
- max timeout computed once

Author: alebedev87

images/router/haproxy/conf/haproxy-config.template

@@ -9,6 +9,8 @@
 {{- $dynamicConfigManager := .DynamicConfigManager }}
 {{- $router_ip_v4_v6_mode := env "ROUTER_IP_V4_V6_MODE" "v4" }}
 {{- $router_disable_http2 := env "ROUTER_DISABLE_HTTP2" "false" }}
+{{- $routerDefaultServerTimeout := env "ROUTER_DEFAULT_SERVER_TIMEOUT" "30s" }}
+{{- $routerDefaultTunnelTimeout := env "ROUTER_DEFAULT_TUNNEL_TIMEOUT" "1h" }}
 {{- $haveClientCA := .HaveClientCA }}
 {{- $haveCRLs := .HaveCRLs }}
 
@@ -42,6 +44,9 @@
 {{- /* pathRewriteTargetPattern: Match path rewrite-Target */}}
 {{- $pathRewriteTargetPattern := `^/.*$` -}}
 
+{{- /* Maximum timeout among all the routes, required to be set on the middle backends to avoid warning message about missing server timeout.  */}}
+{{- $routerMaxServerTimeout := maxTimeoutFirstMatchedAndClipped .State "haproxy.router.openshift.io/timeout" $timeSpecPattern $routerDefaultServerTimeout }}
+
 global
   # Drop resource limit checks to mitigate https://issues.redhat.com/browse/OCPBUGS-21803 in HAProxy 2.6.
   no strict-limits
@@ -314,8 +319,8 @@ frontend public_ssl
 # traffic
 ##########################################################################
 backend be_sni
-        {{- with $value := maxTimeoutFirstMatchedAndClipped .State "haproxy.router.openshift.io/timeout" $timeSpecPattern (env "ROUTER_DEFAULT_SERVER_TIMEOUT") "30s"  }}
-  timeout server  {{ $value }}
+        {{- with $routerMaxServerTimeout }}
+  timeout server {{ $routerMaxServerTimeout }}
         {{- end }}
   server fe_sni unix@/var/lib/haproxy/run/haproxy-sni.sock weight 1 send-proxy
 
@@ -433,8 +438,8 @@ frontend fe_sni
 ##########################################################################
 # backend for when sni does not exist, or ssl term needs to happen on the edge
 backend be_no_sni
-        {{- with $value := maxTimeoutFirstMatchedAndClipped .State "haproxy.router.openshift.io/timeout" $timeSpecPattern (env "ROUTER_DEFAULT_SERVER_TIMEOUT") "30s"  }}
-  timeout server  {{ $value }}
+        {{- with $routerMaxServerTimeout}}
+  timeout server {{ $routerMaxServerTimeout }}
         {{- end }}
   server fe_no_sni unix@/var/lib/haproxy/run/haproxy-no-sni.sock weight 1 send-proxy
 
@@ -595,11 +600,11 @@ backend {{ genBackendNamePrefix $cfg.TLSTermination }}:{{ $cfgIdx }}
           {{- end }}
   tcp-request content reject if !whitelist
         {{- end }}
-        {{- with $value := clipHAProxyTimeoutValue (firstMatch $timeSpecPattern (index $cfg.Annotations "haproxy.router.openshift.io/timeout") (env "ROUTER_DEFAULT_SERVER_TIMEOUT") "30s") }}
-  timeout server  {{ $value }}
+        {{- with $value := clipHAProxyTimeoutValue (firstMatch $timeSpecPattern (index $cfg.Annotations "haproxy.router.openshift.io/timeout") $routerDefaultServerTimeout) }}
+  timeout server {{ $value }}
         {{- end }}
-        {{- with $value := clipHAProxyTimeoutValue (firstMatch $timeSpecPattern (index $cfg.Annotations "haproxy.router.openshift.io/timeout-tunnel") (env "ROUTER_DEFAULT_TUNNEL_TIMEOUT") "1h") }}
-  timeout tunnel  {{ $value }}
+        {{- with $value := clipHAProxyTimeoutValue (firstMatch $timeSpecPattern (index $cfg.Annotations "haproxy.router.openshift.io/timeout-tunnel") $routerDefaultTunnelTimeout) }}
+  timeout tunnel {{ $value }}
         {{- end }}
 
         {{- if isTrue (index $cfg.Annotations "haproxy.router.openshift.io/rate-limit-connections") }}
@@ -799,11 +804,11 @@ backend {{ genBackendNamePrefix $cfg.TLSTermination }}:{{ $cfgIdx }}
           {{- end }}
   tcp-request content reject if !whitelist
         {{- end }}
-        {{- with $value := clipHAProxyTimeoutValue (firstMatch $timeSpecPattern (index $cfg.Annotations "haproxy.router.openshift.io/timeout") (env "ROUTER_DEFAULT_SERVER_TIMEOUT") "30s") }}
-  timeout server  {{ $value }}
+        {{- with $value := clipHAProxyTimeoutValue (firstMatch $timeSpecPattern (index $cfg.Annotations "haproxy.router.openshift.io/timeout") $routerDefaultServerTimeout) }}
+  timeout server {{ $value }}
         {{- end }}
-        {{- with $value := clipHAProxyTimeoutValue (firstMatch $timeSpecPattern (index $cfg.Annotations "haproxy.router.openshift.io/timeout-tunnel") (index $cfg.Annotations "haproxy.router.openshift.io/timeout") (env "ROUTER_DEFAULT_TUNNEL_TIMEOUT") "1h") }}
-  timeout tunnel  {{ $value }}
+        {{- with $value := clipHAProxyTimeoutValue (firstMatch $timeSpecPattern (index $cfg.Annotations "haproxy.router.openshift.io/timeout-tunnel") (index $cfg.Annotations "haproxy.router.openshift.io/timeout") $routerDefaultTunnelTimeout) }}
+  timeout tunnel {{ $value }}
         {{- end }}
 
         {{- if isTrue (index $cfg.Annotations "haproxy.router.openshift.io/rate-limit-connections") }}