Ringbuffer mods to pick the correct hz ring

README.md

@@ -24,7 +24,7 @@ docker pull camunda/zeebe-simple-monitor:latest
 * ensure that a Zeebe broker is running with a Hazelcast exporter (>= 0.8.0-alpha1)  
 * forward the Hazelcast port to the docker container (default: `5701`)
 * configure the connection to the Zeebe broker by setting `zeebe.client.broker.contactPoint` (default: `localhost:26500`) 
-* configure the connection to Hazelcast by setting `zeebe.worker.hazelcast.connection` (default: `localhost:5701`) 
+* configure the connection to Hazelcast by setting `zeebe.client.worker.hazelcast.connection` (default: `localhost:5701`) 
 
 For a local setup, the repository contains a [docker-compose file](docker/docker-compose.yml). It starts a Zeebe broker with the Hazelcast exporter and the application. 
 
@@ -48,7 +48,7 @@ Go to http://localhost:8082
 
 ### Configuration
 
-The worker is a Spring Boot application that uses the [Spring Zeebe Starter](https://github.com/zeebe-io/spring-zeebe). The configuration can be changed via environment variables or an `application.yaml` file. See also the following resources:
+The application is a Spring Boot application that uses the [Spring Zeebe Starter](https://github.com/zeebe-io/spring-zeebe). The configuration can be changed via environment variables or an `application.yaml` file. See also the following resources:
 * [Spring Zeebe Configuration](https://github.com/zeebe-io/spring-zeebe#configuring-zeebe-connection)
 * [Spring Boot Configuration](https://docs.spring.io/spring-boot/docs/current/reference/html/spring-boot-features.html#boot-features-external-config)
 
@@ -57,19 +57,20 @@ By default, the port is set to `8082` and the database is only in-memory (i.e. n
 ```
 zeebe:
 
-  worker:
-    hazelcast:
-      connection: localhost:5701
-
   client:
     broker.contactPoint: 127.0.0.1:26500
     security.plaintext: true
+    
+    worker:
+      hazelcast:
+        connection: localhost:5701
+        connectionTimeout: PT30S
 
 spring:
 
   datasource:
     url: jdbc:h2:mem:zeebe-monitor;DB_CLOSE_DELAY=-1
-    user: sa
+    username: sa
     password:
     driverClassName: org.h2.Driver
 
@@ -82,6 +83,87 @@ server:
   port: 8082
 ```
 
+Using a different database, for example, PostgreSQL:
+
+* change the following database configuration settings
+
+```
+- spring.datasource.url=jdbc:postgresql://db:5432/postgres
+- spring.datasource.username=postgres
+- spring.datasource.password=zeebe
+- spring.datasource.driverClassName=org.postgresql.Driver
+- spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
+```
+
+* add the database driver JAR to the classpath 
+  * using docker, the JAR should be mounted to the `/app/libs/` folder (e.g. `/app/libs/postgresql-42.2.12.jar`)
+
+
+<details>
+  <summary>Full docker-compose.yml with PostgreSQL</summary>
+  <p>
+
+```
+version: "2"
+
+networks:
+  zeebe_network:
+    driver: bridge
+
+services:
+  zeebe:
+    container_name: zeebe_broker
+    image: camunda/zeebe:0.23.0
+    environment:
+      - ZEEBE_LOG_LEVEL=debug
+    ports:
+      - "26500:26500"
+      - "9600:9600"
+      - "5701:5701"
+    volumes:
+      - ../target/exporter/zeebe-hazelcast-exporter.jar:/usr/local/zeebe/exporters/zeebe-hazelcast-exporter.jar
+      - ./application.yaml:/usr/local/zeebe/config/application.yaml
+    networks:
+      - zeebe_network
+      
+  monitor:
+    container_name: zeebe-simple-monitor
+    image: camunda/zeebe-simple-monitor:latest
+    environment:
+      - zeebe.client.broker.contactPoint=zeebe:26500
+      - zeebe.worker.hazelcast.connection=zeebe:5701
+      - spring.datasource.url=jdbc:postgresql://db:5432/postgres
+      - spring.datasource.username=postgres
+      - spring.datasource.password=zeebe
+      - spring.datasource.driverClassName=org.postgresql.Driver
+      - spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
+    volumes:
+      - ./lib/postgresql-42.2.12.jar:/app/libs/postgresql-42.2.12.jar
+    ports:
+      - "8082:8082"
+    depends_on:
+      - zeebe
+      - db
+    networks:
+      - zeebe_network
+
+  db:
+    image: postgres:12.2
+    restart: always
+    environment:
+      POSTGRES_PASSWORD: zeebe
+    volumes:
+      - database-data:/var/lib/postgresql/data/
+    networks:
+      - zeebe_network
+
+volumes:
+  database-data:
+```
+
+  </p>
+</details>
+
 ## Build from Source
 
 Build with Maven

docker/docker-compose.yml

@@ -24,7 +24,7 @@ services:
     image: camunda/zeebe-simple-monitor:latest
     environment:
       - zeebe.client.broker.contactPoint=zeebe:26500
-      - zeebe.worker.hazelcast.connection=zeebe:5701
+      - zeebe.client.worker.hazelcast.connection=zeebe:5701
     ports:
       - "8082:8082"
     depends_on: