[DMAAP] Fix scaling logic for message router kafka and zookeeper

[oom.git] / kubernetes / common / common / templates / _kafkaNodes.tpl

diff --git a/kubernetes/common/common/templates/_kafkaNodes.tpl b/kubernetes/common/common/templates/_kafkaNodes.tpl
new file mode 100644 (file)
index 0000000..f428b58
--- /dev/null
+++ b/kubernetes/common/common/templates/_kafkaNodes.tpl
@@ -0,0 +1,34 @@
+{{/*
+# Copyright © 2021 Bell Canada
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*/}}
+{{/*
+  Generate comma separated list of kafka or zookeper nodes to reuse in message router charts.
+  How to use:
+
+  zookeeper servers list: {{ include "common.kafkaNodes" (dict "dot" . "replicaCount" (index .Values "message-router-zookeeper" "replicaCount") "componentName" .Values.zookeeper.name "port" .Values.zookeeper.port ) }}
+  kafka servers list: {{ include "common.kafkaNodes" (dict "dot" . "replicaCount" (index .Values "message-router-kafka" "replicaCount") "componentName" .Values.kafka.name "port" .Values.kafka.port ) }}
+
+*/}}
+{{- define "common.kafkaNodes" -}}
+{{- $dot := .dot -}}
+{{- $replicaCount := .replicaCount -}}
+{{- $componentName := .componentName -}}
+{{- $port := .port -}}
+{{- $kafkaNodes := list -}}
+{{- range $i, $e := until (int $replicaCount) -}}
+{{- $kafkaNodes = print (include "common.release" $dot) "-" $componentName "-" $i "." $componentName "." (include "common.namespace" $dot) ".svc.cluster.local:" $port | append $kafkaNodes -}}
+{{- end -}}
+{{- $kafkaNodes | join "," -}}
+{{- end -}}