fix: java 17 for event sourced counter sample

Author: aludwiko

samples/spring-eventsourced-counter/README.md

@@ -38,17 +38,17 @@ With both the proxy and your application running, once you have defined endpoint
 
 - increase (or create) a counter named `hello` with value `10`
 ```shell
-curl -i -XPOST localhost:9000/counter/hello/increase/10
+curl -XPOST localhost:9000/counter/hello/increase/10
 ```
 
 - retrieve the value of a counter named `hello`
 ```shell
-curl -i -XGET localhost:9000/counter/hello
+curl -XGET localhost:9000/counter/hello
 ```
 
 - multiply existing counter named `hello` by value `5`
 ```shell
-curl -i -XPOST localhost:9000/counter/hello/multiply/5
+curl -XPOST localhost:9000/counter/hello/multiply/5
 ```
 
 ### Deploy

samples/spring-eventsourced-counter/pom.xml

@@ -16,7 +16,7 @@
     <maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format>
     <mainClass>com.example.Main</mainClass>
 
-    <jdk.target>11</jdk.target>
+    <jdk.target>17</jdk.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
     <kalix-sdk.version>1.0.8</kalix-sdk.version>
@@ -91,7 +91,7 @@
               <name>${dockerImage}:%l</name>
               <build>
                 <!-- Base Docker image which contains jre-->
-                <from>docker.io/library/adoptopenjdk:${jdk.target}-jre-hotspot</from>
+                <from>docker.io/library/eclipse-temurin:${jdk.target}-alpine</from>
                 <createImageOptions>
                   <platform>linux/amd64</platform>
                 </createImageOptions>

samples/spring-eventsourced-counter/src/main/java/com/example/Counter.java

@@ -26,6 +26,9 @@
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 
+import static com.example.CounterEvent.ValueIncreased;
+import static com.example.CounterEvent.ValueMultiplied;
+
 @Entity(entityKey = "id", entityType = "counter")
 @RequestMapping("/counter/{id}")
 public class Counter extends EventSourcedEntity<Integer> {
@@ -58,12 +61,12 @@ public Effect<String> multiply(@PathVariable Integer value) {
 
     @EventHandler
     public Integer handleIncrease(ValueIncreased value) {
-        return currentState() + value.value;
+        return currentState() + value.value();
     }
 
     @EventHandler
     public Integer handleMultiply(ValueMultiplied value) {
-        return currentState() * value.value;
+        return currentState() * value.value();
     }
 }
 

samples/spring-eventsourced-counter/src/main/java/com/example/CounterEvent.java

@@ -0,0 +1,10 @@
+package com.example;
+
+public sealed interface CounterEvent {
+
+  record ValueIncreased(int value) implements CounterEvent {
+  }
+
+  record ValueMultiplied(int value) implements CounterEvent {
+  }
+}

samples/spring-eventsourced-counter/src/main/java/com/example/ValueIncreased.java

@@ -2,9 +2,10 @@
 
 import kalix.javasdk.testkit.EventSourcedResult;
 import kalix.springsdk.testkit.EventSourcedTestKit;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
+import static com.example.CounterEvent.ValueIncreased;
+import static com.example.CounterEvent.ValueMultiplied;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 

samples/spring-eventsourced-counter/src/main/java/com/example/ValueMultiplied.java

@@ -11,7 +11,7 @@
   <properties>
 
     <!-- TODO Update to your own Docker repository or Docker Hub scope -->
-    <dockerImage>my-docker-repo/${project.artifactId}</dockerImage>
+    <dockerImage>aludwiko/${project.artifactId}</dockerImage>
     <dockerTag>${project.version}-${build.timestamp}</dockerTag>
     <maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format>
     <mainClass>com.example.Main</mainClass>
@@ -307,12 +307,12 @@
     <dependency>
       <groupId>io.kalix</groupId>
       <artifactId>kalix-spring-sdk</artifactId>
-      <version>${kalix-sdk.version}</version>
+      <version>1.0.8-14-fedc8579-dev-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>io.kalix</groupId>
       <artifactId>kalix-spring-sdk-testkit</artifactId>
-      <version>${kalix-sdk.version}</version>
+      <version>1.0.8-14-fedc8579-dev-SNAPSHOT</version>
       <scope>test</scope>
     </dependency>