fix: Support latest image tag

Author: jakub-bochenski

components/tyk-gateway/templates/_helpers.tpl

@@ -52,6 +52,15 @@ Create chart name and version as used by the chart label.
 {{- printf "%s" .Values.gateway.image.tag | replace "v" "" -}}
 {{- end -}}
 
+
+{{- define "tyk-gateway.probe-on-control-port" -}}
+{{- if or .Values.gateway.control.probe  (eq .Values.gateway.image.tag "latest") -}}
+true
+{{- else -}}
+{{- or (semverCompare ">= 3.2.0" (include "tyk-gateway.gateway-version" . )) (semverCompare ">=3.0.4 < 3.1.0" (include "tyk-gateway.gateway-version" .)) -}}
+{{- end -}}
+{{- end -}}
+
 {{- define "tyk-gateway.redis_url" -}}
 {{- if .Values.global.redis.addrs -}}
 {{ join "," .Values.global.redis.addrs }}

components/tyk-gateway/templates/deployment-gw-repset.yaml

@@ -277,7 +277,7 @@ spec:
           httpGet:
             scheme: "HTTP{{ if .Values.global.tls.gateway }}S{{ end }}"
             path: /hello
-            {{- if and .Values.gateway.control.enabled (or (semverCompare ">= 3.2.0" (include "tyk-gateway.gateway-version" . )) (semverCompare ">=3.0.4 < 3.1.0" (include "tyk-gateway.gateway-version" .))) }}
+            {{- if and .Values.gateway.control.enabled (include "tyk-gateway.probe-on-control-port" .) }}
             port: {{ .Values.gateway.control.containerPort }}
             {{- else }}
             port: {{ .Values.global.servicePorts.gateway }}
@@ -290,7 +290,7 @@ spec:
           httpGet:
             scheme: "HTTP{{ if .Values.global.tls.gateway }}S{{ end }}"
             path: /hello
-            {{- if and .Values.gateway.control.enabled (or (semverCompare ">= 3.2.0" (include "tyk-gateway.gateway-version" . )) (semverCompare ">=3.0.4 < 3.1.0" (include "tyk-gateway.gateway-version" .))) }}
+            {{- if and .Values.gateway.control.enabled (include "tyk-gateway.probe-on-control-port" .) }}
             port: {{ .Values.gateway.control.containerPort }}
             {{- else }}
             port: {{ .Values.global.servicePorts.gateway }}

components/tyk-gateway/values.yaml

@@ -191,6 +191,11 @@ gateway:
     # annotations for control port service
     annotations: {}
 
+    # The health endpoint is exposed on the control port or the service port, depending on image tag.
+    # Set to true to override to having the health endpoint on the control port.
+    # Useful if the tag is not semVer compatible.
+    probe: false
+
   # Creates an ingress object in k8s. Will require an ingress-controller and
   # annotation to that ingress controller.
   ingress: