addon: Schema registry and REST proxy

addon-cp/confluent-config.yml

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+kind: ConfigMap
+metadata:
+  name: confluent-config
+  namespace: kafka
+apiVersion: v1
+data:
+  schema-registry.properties: |-
+    # Copyright 2014 Confluent Inc.
+    #
+    # 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.
+
+    listeners=http://0.0.0.0:80
+    #kafkastore.bootstrap.servers
+    kafkastore.connection.url=zookeeper:2181
+    kafkastore.topic=_schemas
+    debug=false
+
+  kafka-rest.properties: |-
+    ##
+    # Copyright 2015 Confluent Inc.
+    #
+    # 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.
+    ##
+
+    #id=kafka-rest-test-server
+    listeners=http://0.0.0.0:80
+    bootstrap.servers=kafka-0.broker.kafka.svc.cluster.local:9092,kafka-1.broker.kafka.svc.cluster.local:9092,kafka-2.broker.kafka.svc.cluster.local:9092
+    zookeeper.connect=zookeeper:2181
+    schema.registry.url=http://schemas.kafka.svc.cluster.local:80
+    #
+    # Configure interceptor classes for sending consumer and producer metrics to Confluent Control Center
+    # Make sure that monitoring-interceptors-<version>.jar is on the Java class path
+    #consumer.interceptor.classes=io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor
+    #producer.interceptor.classes=io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor
+
+  log4j.properties: |-
+    log4j.rootLogger=INFO, stdout
+
+    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+    log4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c:%L)%n
+
+    log4j.logger.kafka=ERROR, stdout
+    log4j.logger.org.apache.zookeeper=ERROR, stdout
+    log4j.logger.org.apache.kafka=ERROR, stdout
+    log4j.logger.org.I0Itec.zkclient=ERROR, stdout
+    log4j.additivity.kafka.server=false
+    log4j.additivity.kafka.consumer.ZookeeperConsumerConnector=false

addon-cp/rest-service.yml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: rest
+  namespace: kafka
+spec:
+  ports:
+  - port: 80
+  selector:
+    app: kafka-rest

addon-cp/rest.yml

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+apiVersion: apps/v1beta1
+kind: Deployment
+metadata:
+  name: rest
+  namespace: kafka
+spec:
+  replicas: 1
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
+  template:
+    metadata:
+      labels:
+        app: kafka-rest
+    spec:
+      containers:
+      - name: cp
+        image: solsson/kafka-cp@sha256:89e5b3b326bf8ef888efa9501cd22fb941ca7b5ccef8dfc2f44a1e218f4427e1
+        env:
+        - name: KAFKAREST_LOG4J_OPTS
+          value: -Dlog4j.configuration=file:/etc/kafka-rest/log4j.properties
+        command:
+        - kafka-rest-start
+        - /etc/kafka-rest/kafka-rest.properties
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 80
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 80
+        ports:
+        - containerPort: 80
+        volumeMounts:
+        - name: config
+          mountPath: /etc/kafka-rest
+      volumes:
+      - name: config
+        configMap:
+          name: confluent-config

addon-cp/schemas-service.yml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: schemas
+  namespace: kafka
+spec:
+  ports:
+  - port: 80
+  selector:
+    app: schema-registry

addon-cp/schemas.yml

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+apiVersion: apps/v1beta1
+kind: Deployment
+metadata:
+  name: schemas
+  namespace: kafka
+spec:
+  replicas: 1
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
+  template:
+    metadata:
+      labels:
+        app: schema-registry
+    spec:
+      containers:
+      - name: cp
+        image: solsson/kafka-cp@sha256:89e5b3b326bf8ef888efa9501cd22fb941ca7b5ccef8dfc2f44a1e218f4427e1
+        env:
+        - name: SCHEMA_REGISTRY_LOG4J_OPTS
+          value: -Dlog4j.configuration=file:/etc/schema-registry/log4j.properties
+        command:
+        - schema-registry-start
+        - /etc/schema-registry/schema-registry.properties
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 80
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 80
+        ports:
+        - containerPort: 80
+        volumeMounts:
+        - name: config
+          mountPath: /etc/schema-registry
+      volumes:
+      - name: config
+        configMap:
+          name: confluent-config

test/70rest-test1.yml

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+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: rest-test1
+  namespace: kafka
+spec:
+  template:
+    metadata:
+      name: rest-test1
+    spec:
+      containers:
+      - name: curl
+        image: solsson/curl@sha256:8b0927b81d10043e70f3e05e33e36fb9b3b0cbfcbccdb9f04fd53f67a270b874
+        env:
+        - name: REST
+          value: http://rest.kafka.svc.cluster.local
+        - name: TOPIC
+          value: test1
+        command:
+        - /bin/sh
+        - -c
+        - >
+          curl --retry 10 --retry-delay 30 --retry-connrefused -I $REST;
+
+          curl -H 'Accept: application/vnd.kafka.v2+json' $REST/topics;
+
+          curl --retry 10 -H 'Accept: application/vnd.kafka.v2+json' $REST/topics/test1;
+          curl -X POST -H "Content-Type: application/vnd.kafka.json.v2+json" -H "Accept: application/vnd.kafka.v2+json" --data "{\"records\":[{\"value\":\"Test from $HOSTNAME at $(date)\"}]}" $REST/topics/$TOPIC -v;
+          curl --retry 10 -H 'Accept: application/vnd.kafka.v2+json' $REST/topics/test2;
+
+          curl -X POST -H "Content-Type: application/vnd.kafka.json.v2+json" -H "Accept: application/vnd.kafka.v2+json" --data '{"records":[{"value":{"foo":"bar"}}]}' $REST/topics/$TOPIC -v;
+
+          curl -X POST -H "Content-Type: application/vnd.kafka.v2+json" --data '{"name": "my_consumer_instance", "format": "json", "auto.offset.reset": "earliest"}' $REST/consumers/my_json_consumer -v;
+
+          curl -X POST -H "Content-Type: application/vnd.kafka.v2+json" --data "{\"topics\":[\"$TOPIC\"]}" $REST/consumers/my_json_consumer/instances/my_consumer_instance/subscription -v;
+
+          curl -X GET -H "Accept: application/vnd.kafka.json.v2+json" $REST/consumers/my_json_consumer/instances/my_consumer_instance/records -v;
+
+          curl -X DELETE -H "Content-Type: application/vnd.kafka.v2+json" $REST/consumers/my_json_consumer/instances/my_consumer_instance -v;
+
+          sleep 300
+      restartPolicy: Never