Implement a compile time check of the Quarkus version

core/deployment/pom.xml

@@ -76,6 +76,19 @@
           </annotationProcessorPaths>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>templating-maven-plugin</artifactId>
+        <version>1.0.0</version>
+        <executions>
+          <execution>
+            <id>filtering-java-templates</id>
+            <goals>
+              <goal>filter-sources</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>
 </project>

core/deployment/src/main/java-templates/io/quarkiverse/operatorsdk/deployment/Versions.java

@@ -0,0 +1,7 @@
+package io.quarkiverse.operatorsdk.deployment;
+
+public final class Versions {
+
+  public static final String QUARKUS = "${quarkus.version}";
+
+}

core/deployment/src/main/java/io/quarkiverse/operatorsdk/deployment/OperatorSDKProcessor.java

@@ -60,8 +60,10 @@
 import io.quarkus.gizmo.MethodCreator;
 import io.quarkus.gizmo.MethodDescriptor;
 import io.quarkus.gizmo.ResultHandle;
+import io.quarkus.kubernetes.client.deployment.KubernetesClientProcessor;
 import io.quarkus.kubernetes.client.spi.KubernetesClientBuildItem;
 import io.quarkus.kubernetes.spi.DecoratorBuildItem;
+import io.quarkus.runtime.Quarkus;
 import io.quarkus.runtime.QuarkusApplication;
 import io.quarkus.runtime.metrics.MetricsFactory;
 
@@ -124,6 +126,17 @@ void updateControllerConfigurations(
                         .done());
     }
 
+    private void checkVersionCompatibility(String found, String expected, String name) {
+        if (!found.equals(expected)) {
+            String message = "Incompatible " + name + " version found: \"" + found + "\", expected: \"" + expected + "\"";
+            if (buildTimeConfiguration.failOnVersionCheck) {
+                throw new RuntimeException(message);
+            } else {
+                log.warn(message);
+            }
+        }
+    }
+
     @BuildStep
     ConfigurationServiceBuildItem createConfigurationServiceAndOperator(
             OutputTargetBuildItem outputTarget,
@@ -135,6 +148,15 @@ ConfigurationServiceBuildItem createConfigurationServiceAndOperator(
             BuildProducer<GeneratedCRDInfoBuildItem> generatedCRDInfo,
             LiveReloadBuildItem liveReload, LaunchModeBuildItem launchMode) {
 
+        String runtimeQuarkusVersion = Quarkus.class.getPackage().getImplementationVersion();
+        checkVersionCompatibility(runtimeQuarkusVersion, Versions.QUARKUS, "Quarkus");
+
+        //        String runtimeFabric8Version = io.fabric8.kubernetes.client.Version.clientVersion();
+        //        String josdkFabric8Version = io.javaoperatorsdk.operator.Versions.KUBERNETES_CLIENT;
+        //        String quarkusFabric8Version = io.quarkus.kubernetes.client.deployment.Versions.KUBERNETES_CLIENT;
+        //        checkVersionCompatibility(josdkFabric8Version, quarkusFabric8Version, "JOSDK Fabric8 kubernetes-client ");
+        //        checkVersionCompatibility(runtimeFabric8Version, quarkusFabric8Version, "Fabric8 kubernetes-client");
+
         final CRDConfiguration crdConfig = buildTimeConfiguration.crd;
         final boolean validateCustomResources = ConfigurationUtils.shouldValidateCustomResources(
                 buildTimeConfiguration.crd.validate);

core/runtime/src/main/java/io/quarkiverse/operatorsdk/runtime/BuildTimeOperatorConfiguration.java

@@ -56,4 +56,10 @@ public class BuildTimeOperatorConfiguration {
      */
     @ConfigItem(defaultValue = "true")
     public Boolean stopOnInformerErrorDuringStartup;
+
+    /**
+     * Whether to fail or only emit a warning on version validation at compile time.
+     */
+    @ConfigItem(defaultValue = "true")
+    public Boolean failOnVersionCheck;
 }