[COMMON] Templates for readiness

Create a template in order to have same readiness check everywhere.

Issue-ID: OOM-1971
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: If3297184564a8e763110a79ff89eb07dfbc9e630

1 files changed, 68 insertions, 0 deletions

diff --git a/kubernetes/common/readinessCheck/templates/_readinessCheck.tpl b/kubernetes/common/readinessCheck/templates/_readinessCheck.tpl
new file mode 100644
index 0000000000..5c70e78735
--- /dev/null
+++ b/kubernetes/common/readinessCheck/templates/_readinessCheck.tpl
@@ -0,0 +1,68 @@
+{{/*
+# Copyright © 2020 Orange
+#
+# 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 readiness part for a pod
+  Will look by default to .Values.wait_for
+
+  Value of wait_for is an array of all pods /jobs to wait:
+
+  Example:
+
+  wait_for:
+    - aaf-locate
+    - aaf-cm
+    - aaf-service
+
+  The function can takes two arguments (inside a dictionary):
+     - .dot : environment (.)
+     - .wait_for : list of containers / jobs to wait for (default to
+                   .Values.wait_for)
+
+  Example calls:
+    {{ include "common.readinessCheck.waitFor" . }}
+    {{ include "common.readinessCheck.waitFor" (dict "dot" . "wait_for" .Values.where.my.wait_for.is ) }}
+*/}}
+{{- define "common.readinessCheck.waitFor" -}}
+{{-   $dot := default . .dot -}}
+{{-   $initRoot := default $dot.Values.readinessCheck .initRoot -}}
+{{/*  Our version of helm doesn't support deepCopy so we need this nasty trick */}}
+{{-   $subchartDot := include "common.subChartDot" (dict "dot" $dot "initRoot" $initRoot) }}
+{{-   $wait_for := default $dot.Values.wait_for .wait_for -}}
+- name: {{ include "common.name" $dot }}-{{ $wait_for.name }}-readiness
+  image: "{{ $subchartDot.Values.global.readinessRepository }}/{{ $subchartDot.Values.global.readinessImage }}"
+  imagePullPolicy: {{ $subchartDot.Values.global.pullPolicy | default $subchartDot.Values.pullPolicy }}
+  command:
+  - /root/ready.py
+  args:
+  {{- range $container := $wait_for.containers }}
+  - --container-name
+  - {{ tpl $container $dot }}
+  {{- end }}
+  env:
+  - name: NAMESPACE
+    valueFrom:
+      fieldRef:
+        apiVersion: v1
+        fieldPath: metadata.namespace
+  resources:
+    limits:
+      cpu: {{ $subchartDot.Values.limits.cpu }}
+      memory: {{ $subchartDot.Values.limits.memory }}
+    requests:
+      cpu: {{ $subchartDot.Values.requests.cpu }}
+      memory: {{ $subchartDot.Values.requests.memory }}
+{{- end -}}