Working version of schema registry and rest proxy

.gitignore

@@ -1,3 +1,4 @@
 .idea/*
 charts/cp-kafka/requirements.lock
-charts/*/charts
+charts/*/charts
+charts/*/requirements.lock

charts/cp-kafka-rest/.helmignore

@@ -0,0 +1,21 @@
+# 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

charts/cp-kafka-rest/Chart.yaml

@@ -0,0 +1,5 @@
+apiVersion: v1
+appVersion: "1.0"
+description: A Helm chart for Kubernetes
+name: cp-kafka-rest
+version: 0.1.0

charts/cp-kafka-rest/requirements.yaml

@@ -0,0 +1,5 @@
+dependencies:
+- name: cp-kafka
+  version: 0.1.0
+  repository: file://../cp-kafka
+  condition: kafka.enabled

charts/cp-kafka-rest/templates/_helpers.tpl

@@ -0,0 +1,56 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "cp-kafka-rest.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 "cp-kafka-rest.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 "cp-kafka-rest.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create a default fully qualified zookeeper name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "cp-kafka-rest.cp-zookeeper.fullname" -}}
+{{- $name := default "cp-zookeeper" .Values.zookeeper.nameOverride -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Form the Zookeeper URL. If zookeeper is installed as part of this chart, use k8s service discovery,
+else use user-provided URL
+*/}}
+{{- define "cp-kafka-rest.cp-zookeeper.service-name" }}
+{{- $port := .Values.zookeeper.clientPort | toString }}
+{{- if .Values.kafka.enabled -}}
+{{- printf "%s:%s" (include "cp-kafka-rest.cp-zookeeper.fullname" .) $port }}
+{{- else -}}
+{{- $zookeeperConnect := printf "%s:%s" .Values.kafka.zookeeper.url $port }}
+{{- $zookeeperConnectOverride := index .Values "configurationOverrides" "zookeeper.connect" }}
+{{- default $zookeeperConnect $zookeeperConnectOverride }}
+{{- end -}}
+{{- end -}}

charts/cp-kafka-rest/templates/deployment.yaml

@@ -0,0 +1,51 @@
+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  name: {{ template "cp-kafka-rest.fullname" . }}
+  labels:
+    app: {{ template "cp-kafka-rest.name" . }}
+    chart: {{ template "cp-kafka-rest.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ template "cp-kafka-rest.name" . }}
+      release: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ template "cp-kafka-rest.name" . }}
+        release: {{ .Release.Name }}
+    spec:
+      containers:
+        - name: {{ template "cp-kafka-rest.name" . }}-server
+          image: "{{ .Values.image }}:{{ .Values.imageTag }}"
+          imagePullPolicy: "{{ .Values.imagePullPolicy }}"
+          ports:
+            - name: rest-proxy
+              containerPort: {{ .Values.servicePort}}
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: rest-proxy
+            initialDelaySeconds: {{ .Values.initialDelaySeconds }}
+            timeoutSeconds: {{ .Values.timeoutSeconds }}
+          readinessProbe:
+            httpGet:
+              path: /
+              port: rest-proxy
+            initialDelaySeconds: {{ .Values.initialDelaySeconds }}
+            timeoutSeconds: {{ .Values.timeoutSeconds }}
+          resources:
+{{ toYaml .Values.resources | indent 12 }}
+          env:
+          - name: KAFKA_REST_HOST_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.name
+          - name: KAFKA_REST_ZOOKEEPER_CONNECT
+            value: {{ template "cp-kafka-rest.cp-zookeeper.service-name" . }}
+

charts/cp-kafka-rest/templates/service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "cp-kafka-rest.fullname" . }}
+  labels:
+    app: {{ template "cp-kafka-rest.name" . }}
+    chart: {{ template "cp-kafka-rest.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  ports:
+    - name: rest-proxy
+      port: {{ .Values.servicePort }}
+  selector:
+    app: {{ template "cp-kafka-rest.name" . }}
+    release: {{ .Release.Name }}

charts/cp-kafka-rest/values.yaml

@@ -0,0 +1,42 @@
+# Default values for cp-kafka-rest.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+replicaCount: 1
+
+## Image Info
+## ref: https://hub.docker.com/r/confluentinc/cp-kafka/
+image: confluentinc/cp-kafka-rest
+imageTag: 4.0.1
+
+## Specify a imagePullPolicy
+## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
+imagePullPolicy: IfNotPresent
+
+## Liveness and Readiness Probe Configuration
+initialDelaySeconds: 30
+timeoutSeconds: 5
+
+servicePort: 8082
+
+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
+
+kafka:
+  ## If true, install the cp-kafka chart alongside cp-kafka-rest
+  ## ref: ../cp-kafka
+  enabled: true
+
+## If the Kafka Chart is disabled a URL and port are required to connect
+zookeeper:
+  url: ""
+  clientPort: 2181

charts/cp-schema-registry/.helmignore

@@ -0,0 +1,21 @@
+# 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

charts/cp-schema-registry/Chart.yaml

@@ -0,0 +1,5 @@
+apiVersion: v1
+appVersion: "1.0"
+description: A Helm chart for Kubernetes
+name: cp-schema-registry
+version: 0.1.0

charts/cp-schema-registry/requirements.yaml

@@ -0,0 +1,5 @@
+dependencies:
+- name: cp-kafka
+  version: 0.1.0
+  repository: file://../cp-kafka
+  condition: kafka.enabled

charts/cp-schema-registry/templates/_helpers.tpl

@@ -0,0 +1,56 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "cp-schema-registry.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 "cp-schema-registry.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 "cp-schema-registry.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+
+{{/*
+Form the Kafka URL. If Kafka is installed as part of this chart, use k8s service discovery,
+else use user-provided URL
+*/}}
+{{- define "cp-schema-registry.kafkaStore.bootstrapServers" }}
+{{- if .Values.kafkaStore.overrideBootstrapServers -}}
+{{- .Values.kafkaStore.overrideBootstrapServers }}
+{{- else -}}
+{{- printf "PLAINTEXT://%s-cp-kafka-headless:9092" .Release.Name }}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Default GroupId to Release Name but allow it to be overridden
+*/}}
+{{- define "cp-schema-registry.groupId" -}}
+{{- if .Values.overrideGroupId -}}
+{{- .Values.overrideGroupId -}}
+{{- else -}}
+{{- .Release.Name -}}
+{{- end -}}
+{{- end -}}

charts/cp-schema-registry/templates/deployment.yaml

@@ -0,0 +1,65 @@
+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  name: {{ template "cp-schema-registry.fullname" . }}
+  labels:
+    app: {{ template "cp-schema-registry.name" . }}
+    chart: {{ template "cp-schema-registry.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service | quote }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ template "cp-schema-registry.name" . }}
+      release: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ template "cp-schema-registry.name" . }}
+        release: {{ .Release.Name }}
+    spec:
+      containers:
+        - name: {{ template "cp-schema-registry.name" . }}-server
+          image: "{{ .Values.image }}:{{ .Values.imageTag }}"
+          imagePullPolicy: "{{ .Values.imagePullPolicy }}"
+          ports:
+            - name: schema-registry
+              containerPort: {{ .Values.servicePort}}
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: schema-registry
+            initialDelaySeconds: {{ .Values.initialDelaySeconds }}
+            timeoutSeconds: {{ .Values.timeoutSeconds }}
+          readinessProbe:
+            httpGet:
+              path: /
+              port: schema-registry
+            initialDelaySeconds: {{ .Values.initialDelaySeconds }}
+            timeoutSeconds: {{ .Values.timeoutSeconds }}
+          resources:
+{{ toYaml .Values.resources | indent 12 }}
+          env:
+          - name: SCHEMA_REGISTRY_HOST_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.name
+          - name: SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS
+            value: {{ template "cp-schema-registry.kafkaStore.bootstrapServers" . }}
+          - name: SCHEMA_REGISTRY_KAFKASTORE_GROUP_ID
+            value: {{ template "cp-schema-registry.groupId" . }}
+          - name: SCHEMA_REGISTRY_MASTER_ELIGIBILITY
+            value: "true"
+          {{ range $configName, $configValue := .Values.configurationOverrides }}
+          - name: SCHEMA_REGISTRY_{{ $configName | replace "." "_" | upper }}
+            value: {{ $configValue }}
+          {{ end }}
+          {{- if .Values.schemaRegistryOpts }}
+          # The pre-flight checks use KAFKA_OPTS instead of SCHEMA_REGISTRY_OPTS.
+          - name: KAFKA_OPTS
+            value: "{{ .Values.schemaRegistryOpts }}"
+          - name: SCHEMA_REGISTRY_OPTS
+            value: "{{ .Values.schemaRegistryOpts }}"
+          {{- end }}

charts/cp-schema-registry/templates/service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "cp-schema-registry.fullname" . }}
+  labels:
+    app: {{ template "cp-schema-registry.name" . }}
+    chart: {{ template "cp-schema-registry.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  ports:
+    - name: schema-registry
+      port: {{ .Values.servicePort }}
+  selector:
+    app: {{ template "cp-schema-registry.name" . }}
+    release: {{ .Release.Name }}