mirrored release for deployments (#1657)

* mirrored release for deployments Signed-off-by: Michael Kalantar <[email protected]> * bump chart version Signed-off-by: Michael Kalantar <[email protected]> --------- Signed-off-by: Michael Kalantar <[email protected]>
iter8-tools · Dec 13, 2023 · f3f9a8e · f3f9a8e
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diff --git a/charts/release/Chart.yaml b/charts/release/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v2
 name: release
-version: 0.18.4
+version: 0.18.5
 description: Iter8 supported application release
 type: application
 keywords:

diff --git a/charts/release/templates/_deployment-istio.mirror.routemap.tpl b/charts/release/templates/_deployment-istio.mirror.routemap.tpl
@@ -0,0 +1,74 @@
+{{- define "env.deployment-istio.mirror.routemap" }}
+
+{{- $APP_NAME := (include "application.name" .) }}
+{{- $APP_NAMESPACE := (include "application.namespace" .) }}
+{{- $versions := include "normalize.versions.deployment" . | mustFromJson }}
+
+apiVersion: v1
+kind: ConfigMap
+{{- template "routemap.metadata" . }}
+data:
+  strSpec: |
+    versions: 
+    {{- range $i, $v := $versions }}
+    - resources:
+      - gvrShort: svc
+        name: {{ template "svc.name" $v }}
+        namespace: {{ template "svc.namespace" $v }}
+      - gvrShort: deploy
+        name: {{ template "deploy.name" $v }}
+        namespace: {{ template "deploy.namespace" $v }}
+      - gvrShort: cm
+        name: {{ $v.VERSION_NAME }}-weight-config
+        namespace: {{ $v.VERSION_NAMESPACE }}
+      weight: {{ $v.weight }}
+    {{- end }} {{- /* range $i, $v := $versions */}}
+    routingTemplates:
+      {{ .Values.application.strategy }}:
+        gvrShort: vs
+        template: |
+          apiVersion: networking.istio.io/v1beta1
+          kind: VirtualService
+          metadata:
+            name: {{ $APP_NAME }}
+            namespace: {{ $APP_NAMESPACE }}
+          spec:
+            gateways:
+            {{- if .Values.gateway }}
+            - {{ .Values.gateway }}
+            {{- end }}
+            - mesh
+            hosts:
+            - {{ $APP_NAME }}.{{ $APP_NAMESPACE }}
+            - {{ $APP_NAME }}.{{ $APP_NAMESPACE }}.svc
+            - {{ $APP_NAME }}.{{ $APP_NAMESPACE }}.svc.cluster.local
+            http:
+            - name: {{ $APP_NAME }}
+              route:
+              # primary version
+              {{- $v := (index $versions 0) }}
+              - destination:
+                  host: {{ template "svc.name" $v }}.{{ $APP_NAMESPACE }}.svc.cluster.local
+                  port:
+                    number: {{ $v.port }}
+                {{- if gt (len $versions) 1 }}
+                {{ `{{- if gt (index .Weights 1) 0 }}` }}
+                weight: {{ `{{ index .Weights 0 }}` }}
+                {{ `{{- end }}` }}
+                {{- end  }}
+                headers: 
+                  response:
+                    add:
+                      app-version: {{ template "svc.name" $v }}
+              # other versions
+              {{- range $i, $v := (rest $versions) }}
+              {{ `{{- if gt (index .Weights ` }}{{ print (add1 $i) }}{{ `) 0 }}` }}
+              mirror:
+                host: {{ template "svc.name" $v }}.{{ $APP_NAMESPACE }}.svc.cluster.local
+                port:
+                  number: {{ $v.port }}
+              mirrorPercentage:
+                value: {{ `{{ index .Weights ` }}{{ print (add1 $i) }}{{ ` }}` }}
+              {{ `{{- end }}` }}
+              {{- end }}
+{{- end }} {{- /* define "env.deployment-istio.mirror.routemap" */}}
diff --git a/charts/release/templates/_deployment-istio.mirror.tpl b/charts/release/templates/_deployment-istio.mirror.tpl
@@ -0,0 +1,15 @@
+{{- define "env.deployment-istio.mirror" }}
+
+{{- /* prepare versions for simpler processing */}}
+{{- $versions := include "normalize.versions.deployment" . | mustFromJson }}
+
+{{- /* weight-config ConfigMaps except for primary */}}
+{{- range $i, $v := (rest $versions) }}
+    {{ include "configmap.weight-config" $v }}
+---
+{{- end }} {{- /* range $i, $v := $versions */}}
+
+{{- /* routemap */}}
+{{ include "env.deployment-istio.mirror.routemap" . }}
+
+{{- end }} {{- /* define "env.deployment-istio.mirror" */}}
diff --git a/charts/release/templates/_deployment-istio.tpl b/charts/release/templates/_deployment-istio.tpl
@@ -25,6 +25,8 @@
 {{ include "env.deployment-istio.blue-green" . }}
 {{- else if eq "canary" .Values.application.strategy }}
 {{ include "env.deployment-istio.canary" . }}
+{{- else if eq "mirror" .Values.application.strategy }}
+{{ include "env.deployment-istio.mirror" . }}
 {{- end }} {{- /* if eq ... .Values.application.strategy */}}
 
 {{- end }} {{- /* define "env.deployment-istio" */}}