Add elasticsearch ILM functionality

Add functionality to delete indexes older than 14 days. ILM api
will handle deleting indexes.

Change-Id: I22c02af78b6ce979d0c70b420c106917b0fc5a4e

elasticsearch/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v7.1.0
 description: OpenStack-Helm ElasticSearch
 name: elasticsearch
-version: 0.1.3
+version: 0.1.4
 home: https://www.elastic.co/
 sources:
   - https://github.com/elastic/elasticsearch

elasticsearch/templates/bin/_create_template.sh.tpl

@@ -28,4 +28,18 @@ else
    echo "Policy {{$policy_name}} not created!"
 fi
 
+{{ end }}
+
+{{ range $policy_name, $fields := .Values.conf.index_policies }}
+
+result=$(curl -K- <<< "--user ${ELASTICSEARCH_USERNAME}:${ELASTICSEARCH_PASSWORD}" \
+-XPUT "${ELASTICSEARCH_HOST}:${ELASTICSEARCH_PORT}/_ilm/policy/{{$policy_name}}" \
+-H 'Content-Type: application/json' -d @/tmp/{{$policy_name}}.json \
+| python -c "import sys, json; print(json.load(sys.stdin)['acknowledged'])")
+if [ "$result" == "True" ]; then
+   echo "Policy {{$policy_name}} created!"
+else
+   echo "Policy {{$policy_name}} not created!"
+fi
+
 {{ end }}

elasticsearch/templates/configmap-etc-templates.yaml

@@ -28,5 +28,8 @@ data:
 {{ range $policy_name, $fields := .Values.conf.snapshot_policies }}
   {{ $policy_name }}.json: {{ toJson $fields | b64enc }}
 {{ end }}
+{{ range $policy_name, $fields := .Values.conf.index_policies }}
+  {{ $policy_name }}.json: {{ toJson $fields | b64enc }}
+{{ end }}
 
 {{- end }}

elasticsearch/templates/job-elasticsearch-template.yaml

@@ -84,6 +84,12 @@ spec:
               subPath: {{$policy_name}}.json
               readOnly: true
             {{ end }}
+            {{ range $policy_name, $fields := .Values.conf.index_policies }}
+            - name: elasticsearch-templates-etc
+              mountPath: /tmp/{{$policy_name}}.json
+              subPath: {{$policy_name}}.json
+              readOnly: true
+            {{ end }}
 {{ if $mounts_elasticsearch_templates.volumeMounts }}{{ toYaml $mounts_elasticsearch_templates.volumeMounts | indent 12 }}{{ end }}
       volumes:
         - name: pod-tmp

elasticsearch/values.yaml

@@ -807,7 +807,14 @@ conf:
         disable_action: false
       retention:
         expire_after: 179d
-
+  index_policies:
+    delete_all_indexes:
+      policy:
+        phases:
+          delete:
+            min_age: 14d
+            actions:
+              delete: {}
 endpoints:
   cluster_domain_suffix: cluster.local
   local_image_registry: