feat: Microservices pattern : Self-Registration (#3245)

* Services and information

* README.md updated

* unit tests added for controllers

* pom.xml, clean up, java version update and slf4j logging added

* pom files updated

* Removed children maven wrappers

* Microservice-self-registration added to pom file

* POM file updated for self-registration

* pom file updated

* Update pom.xml

correction to mudule name

* SonarQube comments addressed

* sonarqube comments on coverage addressed

* Code coverage for custom health checks

* changes for unit tests

* changes for unit tests

* changes to for code coverage improvement

microservices-self-registration/eurekaserver/.gitattributes

@@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf

microservices-self-registration/eurekaserver/.gitignore

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+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

microservices-self-registration/eurekaserver/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.4.4</version>
+        <relativePath/> </parent>
+    <groupId>com.learning</groupId>
+    <artifactId>eurekaserver</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>eurekaserver</name>
+    <description>eurekaserver</description>
+
+    <properties>
+        <spring-cloud.version>2024.0.1</spring-cloud.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring-cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

microservices-self-registration/eurekaserver/src/main/java/com/learning/eurekaserver/EurekaserverApplication.java

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+package com.learning.eurekaserver;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
+
+@SpringBootApplication
+@EnableEurekaServer
+public class EurekaserverApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(EurekaserverApplication.class, args);
+	}
+
+}

microservices-self-registration/eurekaserver/src/main/resources/application.yml

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+server:
+    port: 8761
+
+eureka:
+    client:
+        register-with-eureka: false
+        fetch-registry: false
+    server:
+        enable-self-preservation: true
+

microservices-self-registration/eurekaserver/src/test/java/com/learning/eurekaserver/EurekaserverApplicationTests.java

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+package com.learning.eurekaserver;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class EurekaserverApplicationTests {
+
+	@Test
+	void contextLoads() {
+    // This is a basic integration test that checks if the Spring Application Context loads successfully.
+    // If the context loads without any exceptions, the test is considered passing.
+    // It is often left empty as the act of loading the context is the primary verification.
+    // You can add specific assertions here if you want to verify the presence or state of certain beans.
+	}
+
+}