feat: Allow users to set a maximum message size to send through gRPC, that will be used when setting up the client for interacting with etcd3

Signed-off-by: Jade Carino <carino_jade@yahoo.co.uk>

Author: jadecarino

charts/ecosystem/templates/_helpers.tpl

@@ -65,4 +65,11 @@
 */}}
 {{- define "framework.extra.bundles" -}}
   {{- print "dev.galasa.cps.etcd,dev.galasa.ras.couchdb,dev.galasa.events.kafka" }}
+{{- end -}}s
+
+{{/*
+  Returns the maximum message size in bytes allowed for a single gRPC frame as an integer value.
+*/}}
+{{- define "max.grpc.message.size" -}}
+  {{- empty .Values.maxgRPCMessageSize | ternary (4194304) (int .Values.maxgRPCMessageSize) }}
 {{- end -}}

charts/ecosystem/templates/api.yaml

@@ -153,6 +153,8 @@ spec:
               key: GALASA_EVENT_STREAMS_TOKEN
         - name: GALASA_ENCRYPTION_KEYS_PATH
           value: {{ include "ecosystem.encryption.keys.path" . }}
+        - name: MAX_GRPC_MESSAGE_SIZE
+          value: {{ include "max.grpc.message.size" . }}
         ports:
         - containerPort: 9010
           name: metrics

charts/ecosystem/templates/custom-resource-monitor.yaml

@@ -77,6 +77,8 @@ spec:
           value: "{{ join "," .Values.cleanupMonitor.includes }}"
         - name: GALASA_MONITOR_EXCLUDES_GLOB_PATTERNS
           value: "{{ join "," .Values.cleanupMonitor.excludes }}"
+        - name: MAX_GRPC_MESSAGE_SIZE
+          value: {{ include "max.grpc.message.size" . }}
         ports:
         - containerPort: 9010
           name: metrics

charts/ecosystem/templates/engine-controller.yaml

@@ -120,6 +120,8 @@ spec:
               key: GALASA_EVENT_STREAMS_TOKEN
         - name: GALASA_ENCRYPTION_KEYS_PATH
           value: {{ include "ecosystem.encryption.keys.path" . }}
+        - name: MAX_GRPC_MESSAGE_SIZE
+          value: {{ include "max.grpc.message.size" . }}
         ports:
         - containerPort: 9010
           name: metrics

charts/ecosystem/templates/metrics.yaml

@@ -100,6 +100,8 @@ spec:
             secretKeyRef:
               name: {{ .Release.Name }}-couchdb-secret
               key: GALASA_RAS_TOKEN
+        - name: MAX_GRPC_MESSAGE_SIZE
+          value: {{ include "max.grpc.message.size" . }}
         ports:
         - containerPort: 9010
           name: metrics

charts/ecosystem/templates/resource-monitor.yaml

@@ -108,6 +108,8 @@ spec:
           value: "{{ join "," .Values.resourceMonitor.includes }}"
         - name: GALASA_MONITOR_EXCLUDES_GLOB_PATTERNS
           value: "{{ join "," .Values.resourceMonitor.excludes }}"
+        - name: MAX_GRPC_MESSAGE_SIZE
+          value: {{ include "max.grpc.message.size" . }}
         ports:
         - containerPort: 9010
           name: metrics

charts/ecosystem/values.yaml

@@ -561,4 +561,17 @@ resourceMonitor:
     requests:
       memory: "300Mi"
     limits:
-      memory: "500Mi"
+      memory: "500Mi"
+#
+#
+#
+# Optional. Sets the maximum message size in bytes allowed for a single gRPC frame.
+# This will be used by the KVClient that is set up to interact with the etcd3 cluster.
+# 
+# The default value for this is 4194304.
+# 
+# The maximum value this can be set to is 2147483647.
+#
+# Example value: "4194304"
+#
+maxgRPCMessageSize: ""