added hawtio & exposed jmx endpoint

Author: rohithandique

Dockerfile

@@ -2,5 +2,8 @@ FROM eclipse-temurin:21-jre-alpine
 WORKDIR /app
 
 COPY build/libs/generic-server-spring-boot.jar /app/
+COPY start.sh /app/
+RUN chmod +x /app/start.sh
 EXPOSE 8080
-ENTRYPOINT ["java", "-jar", "generic-server-spring-boot.jar"]
+EXPOSE 9010
+ENTRYPOINT ["/app/start.sh"]

build.gradle

@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '3.5.0-SNAPSHOT'
+	id 'org.springframework.boot' version '3.5.8'
 	id 'io.spring.dependency-management' version '1.1.7'
 }
 
@@ -20,10 +20,11 @@ repositories {
 }
 
 dependencies {
+	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.8.14'
 	implementation 'org.springframework.boot:spring-boot-starter-actuator'
 	implementation 'org.springframework.boot:spring-boot-starter-web'
-	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.8.5'
 	implementation 'org.springframework.boot:spring-boot-starter-validation'
+	implementation 'io.hawt:hawtio-springboot:4.1.0'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }
@@ -32,6 +33,16 @@ tasks.named('test') {
 	useJUnitPlatform()
 }
 
+tasks.named('bootRun') {
+	jvmArgs = [
+		'-Dcom.sun.management.jmxremote',
+		'-Dcom.sun.management.jmxremote.port=9010',
+		'-Dcom.sun.management.jmxremote.ssl=false',
+		'-Dcom.sun.management.jmxremote.authenticate=false',
+		'-Dcom.sun.management.jmxremote.rmi.port=9010'
+	]
+}
+
 bootJar {
 	archiveFileName = "${rootProject.name}.jar"
 }

src/main/java/com/generic/server/filter/RestFilter.java

@@ -0,0 +1,28 @@
+package com.generic.server.filter;
+
+import jakarta.servlet.*;
+import jakarta.servlet.http.*;
+import org.springframework.http.*;
+import org.springframework.lang.NonNull;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import java.io.IOException;
+
+@Component
+public class RestFilter extends OncePerRequestFilter {
+    @Override
+    protected void doFilterInternal(
+            HttpServletRequest request,
+            @NonNull HttpServletResponse response,
+            @NonNull  FilterChain filterChain) throws ServletException, IOException {
+        String requestUri = request.getRequestURI();
+        if (requestUri.endsWith("/") && !requestUri.equals("/")) {
+            String newUrl = requestUri.substring(0, requestUri.length() - 1);
+            response.setStatus(HttpStatus.PERMANENT_REDIRECT.value());
+            response.setHeader(HttpHeaders.LOCATION, newUrl);
+            return;
+        }
+        filterChain.doFilter(request, response);
+    }
+}

src/main/resources/application.yml

@@ -3,10 +3,24 @@ spring:
     name: "generic-server-spring-boot"
   profiles:
     active: "local"
+  jmx:
+    enabled: true
 
 server:
   port: 8080
 
 springdoc:
+  show-actuator: true
   swagger-ui:
-    path: "/swagger-ui/index.html"
+    path: "/swagger-ui/index.html"
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: "*"
+      path-mapping:
+        hawtio: console
+
+hawtio:
+  authenticationEnabled: false

start.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+exec java \
+  -Dcom.sun.management.jmxremote \
+  -Dcom.sun.management.jmxremote.port=9010 \
+  -Dcom.sun.management.jmxremote.ssl=false \
+  -Dcom.sun.management.jmxremote.authenticate=false \
+  -Dcom.sun.management.jmxremote.rmi.port=9010 \
+  -jar generic-server-spring-boot.jar