Spring Boot Actuator + Kubernetes

Issue: BAEL-2356

spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/java/com/baeldung/readiness/Application.java

@@ -0,0 +1,12 @@
+package com.baeldung.readiness;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/java/com/baeldung/readiness/health/CustomHealthIndicator.java

@@ -0,0 +1,27 @@
+package com.baeldung.readiness.health;
+
+import org.springframework.boot.actuate.health.Health;
+import org.springframework.boot.actuate.health.HealthIndicator;
+import org.springframework.stereotype.Component;
+
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+@Component
+public class CustomHealthIndicator implements HealthIndicator {
+
+    private boolean isHealthy = false;
+
+    public CustomHealthIndicator() {
+        ScheduledExecutorService scheduled = Executors.newSingleThreadScheduledExecutor();
+        scheduled.schedule(() -> {
+            isHealthy = true;
+        }, 40, TimeUnit.SECONDS);
+    }
+
+    @Override
+    public Health health() {
+        return isHealthy ? Health.up().build() : Health.down().build();
+    }
+}

spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/resources/resources/application.properties

@@ -0,0 +1 @@
+server.port=8080

spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/resources/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

spring-cloud/spring-cloud-kubernetes/readiness-example/src/test/java/com/baeldung/SpringContextIntegrationTest.java

@@ -0,0 +1,17 @@
+package com.baeldung;
+
+import com.baeldung.readiness.Application;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class)
+public class SpringContextIntegrationTest {
+
+	@Test
+	public void contextLoads() {
+	}
+
+}