Introduce autoconfiguration for the AxonServerHealthIndicator

Introduce an autoconfiguration class constructing an
AxonServerHealthIndicator bean if actuator is present on the classpath

#1964

spring-boot-autoconfigure/src/main/java/org/axonframework/springboot/autoconfig/AxonServerActuatorAutoConfiguration.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2010-2022. Axon Framework
+ *
+ * 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.
+ */
+
+package org.axonframework.springboot.autoconfig;
+
+import org.axonframework.actuator.AxonServerHealthIndicator;
+import org.axonframework.axonserver.connector.AxonServerConnectionManager;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Autoconfiguration class for Spring Boot Actuator monitoring tools around Axon Server.
+ *
+ * @author Steven van Beelen
+ * @since 4.6.0
+ */
+@Configuration
+@AutoConfigureAfter(AxonServerAutoConfiguration.class)
+@ConditionalOnClass(name = {"org.springframework.boot.actuate.health.AbstractHealthIndicator"})
+@ConditionalOnProperty(name = "axon.axonserver.enabled", matchIfMissing = true)
+public class AxonServerActuatorAutoConfiguration {
+
+    @SuppressWarnings("SpringJavaInjectionPointsAutowiringInspection")
+    @Bean
+    public AxonServerHealthIndicator axonServerHealthIndicator(AxonServerConnectionManager connectionManager) {
+        return new AxonServerHealthIndicator(connectionManager);
+    }
+}

spring-boot-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -11,4 +11,5 @@ org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
   org.axonframework.springboot.autoconfig.InfraConfiguration,\
   org.axonframework.springboot.autoconfig.ObjectMapperAutoConfiguration,\
   org.axonframework.springboot.autoconfig.AxonServerAutoConfiguration,\
-  org.axonframework.springboot.autoconfig.XStreamAutoConfiguration
+  org.axonframework.springboot.autoconfig.XStreamAutoConfiguration,\
+  org.axonframework.springboot.autoconfig.AxonServerActuatorAutoConfiguration