Helm charts for Prometheus Kafka Remote Writer

Added Helm charts for prom-kafka-writer micro service.
Removed older kafka adapter due to inflexibility.

Issue-ID: ONAPARC-392
Signed-off-by: Dileep Ranganathan <dileep.ranganathan@intel.com>
Change-Id: I6f8e33a5e096c6b88badb29718e1e7ce126889fd

9 files changed, 181 insertions, 46 deletions

diff --git a/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/.helmignore b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/.helmignore
new file mode 100644
index 00000000..50af0317
--- /dev/null
+++ b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/.helmignore
@@ -0,0 +1,22 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
diff --git a/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/Chart.yaml b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/Chart.yaml
new file mode 100644
index 00000000..1de42f01
--- /dev/null
+++ b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/Chart.yaml
@@ -0,0 +1,5 @@
+apiVersion: v1
+appVersion: "1.0"
+description: Helm chart for Prometheus to Kafka Writer
+name: prom-kafka-writer
+version: 0.1.0
diff --git a/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/NOTES.txt b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/NOTES.txt
new file mode 100644
index 00000000..757b139c
--- /dev/null
+++ b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/NOTES.txt
@@ -0,0 +1,15 @@
+1. Get the application URL by running these commands:
+{{- if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "prom-kafka-writer.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "prom-kafka-writer.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "prom-kafka-writer.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "prom-kafka-writer.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl port-forward $POD_NAME 8080:80
+{{- end }}
diff --git a/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/_helpers.tpl b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/_helpers.tpl
new file mode 100644
index 00000000..1213110f
--- /dev/null
+++ b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/_helpers.tpl
@@ -0,0 +1,32 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "prom-kafka-writer.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "prom-kafka-writer.fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "prom-kafka-writer.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
diff --git a/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/deployment.yaml b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/deployment.yaml
new file mode 100644
index 00000000..a3b6be3e
--- /dev/null
+++ b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/deployment.yaml
@@ -0,0 +1,48 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "prom-kafka-writer.fullname" . }}
+  labels:
+    app.kubernetes.io/name: {{ include "prom-kafka-writer.name" . }}
+    helm.sh/chart: {{ include "prom-kafka-writer.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "prom-kafka-writer.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+      app: {{ include "prom-kafka-writer.name" . }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: {{ include "prom-kafka-writer.name" . }}
+        app.kubernetes.io/instance: {{ .Release.Name }}
+        app: {{ include "prom-kafka-writer.name" . }}
+    spec:
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.service.port }}
+              protocol: TCP
+          env:
+            - name: PORT
+              value: {{ .Values.service.port | quote }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}
diff --git a/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/service.yaml b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/service.yaml
new file mode 100644
index 00000000..abc874a1
--- /dev/null
+++ b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/templates/service.yaml
@@ -0,0 +1,23 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "prom-kafka-writer.fullname" . }}
+  labels:
+    app.kubernetes.io/name: {{ include "prom-kafka-writer.name" . }}
+    helm.sh/chart: {{ include "prom-kafka-writer.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+    {{- if ( and (eq .Values.service.type "NodePort" ) (not (empty .Values.service.nodePort)) ) }}
+      nodePort: {{ .Values.service.nodePort }}
+    {{- end }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app.kubernetes.io/name: {{ include "prom-kafka-writer.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app: {{ include "prom-kafka-writer.name" . }}
diff --git a/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/values.yaml b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/values.yaml
new file mode 100644
index 00000000..0c59b8aa
--- /dev/null
+++ b/vnfs/DAaaS/deploy/collection/charts/prom-kafka-writer/values.yaml
@@ -0,0 +1,36 @@
+# Default values for prom-kafka-writer.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+replicaCount: 1
+
+image:
+  repository: dcr.cluster.local:32644/prom-kafka-writer
+  tag: latest
+  pullPolicy: IfNotPresent
+
+nameOverride: ""
+fullnameOverride: ""
+
+service:
+  type: ClusterIP
+  port: 8686
+  nodePort: 30086
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}
diff --git a/vnfs/DAaaS/deploy/collection/charts/prometheus/templates/prometheus.yaml b/vnfs/DAaaS/deploy/collection/charts/prometheus/templates/prometheus.yaml
index 862e8650..53494920 100644
--- a/vnfs/DAaaS/deploy/collection/charts/prometheus/templates/prometheus.yaml
+++ b/vnfs/DAaaS/deploy/collection/charts/prometheus/templates/prometheus.yaml
@@ -17,34 +17,3 @@ spec:
       - {{ .Release.Namespace | quote }}
   resources:
 {{ toYaml .Values.prometheus.resources | indent 4 }}
-
-  # TODO: Templatizing multiple remote read/write.
-  # Especially Kafka adapater.
-  remoteRead:
-  - url: "{{ .Values.m3db.url }}/api/v1/prom/remote/read"
-    # To test reading even when local Prometheus has the data
-    readRecent: true
-  remoteWrite:
-  - url: "{{ .Values.m3db.url }}/api/v1/prom/remote/write"
-    # To differentiate between local and remote storage we will add a storage label
-    writeRelabelConfigs:
-      - targetLabel: metrics_storage
-        replacement: m3db_remote
-  - url: "{{ .Values.kafkaAdapter.url }}/receive"
-  containers:
-  - name: {{ template "prometheus.name" . }}-adapter
-    image: "{{ .Values.kafkaAdapter.image.repository }}:{{ .Values.kafkaAdapter.image.tag }}"
-    imagePullPolicy: {{ .Values.kafkaAdapter.image.pullPolicy }}
-    env:
-    - name: KAFKA_BROKER_LIST
-      value: {{ .Values.kafkaAdapter.broker }}
-    - name: KAFKA_TOPIC
-      value: {{ .Values.kafkaAdapter.topic }}
-    - name: SERIALIZATION_FORMAT
-      value: {{ .Values.kafkaAdapter.serializationFormat }}
-    - name: PORT
-      value: {{ quote .Values.kafkaAdapter.port }}
-    - name: LOG_LEVEL
-      value: {{ .Values.kafkaAdapter.logLevel }}
-    resources:
-{{ toYaml .Values.kafkaAdapter.resources | indent 6 }}
diff --git a/vnfs/DAaaS/deploy/collection/charts/prometheus/values.yaml b/vnfs/DAaaS/deploy/collection/charts/prometheus/values.yaml
index c939af4b..e35c6735 100644
--- a/vnfs/DAaaS/deploy/collection/charts/prometheus/values.yaml
+++ b/vnfs/DAaaS/deploy/collection/charts/prometheus/values.yaml
@@ -67,18 +67,3 @@ prometheus:
     #type: NodePort
 
     sessionAffinity: ""
-m3db:
-  url: http://m3coordinator-m3db.m3db-operator.svc.cluster.local:7201
-
-kafkaAdapter:
-  image: 
-    repository: telefonica/prometheus-kafka-adapter
-    tag: 1.2.0 
-    pullPolicy: IfNotPresent
-  url: http://localhost:8080
-  port: 8080
-  broker: my-cluster-kafka-bootstrap.msg.svc.cluster.local:9092
-  topic: orders
-  serializationFormat: json
-  logLevel: debug
-  resources: {}