418: Improve performance of deployed WAR container (OPENED)

Task-Url: #418

search-ui/src/main/java/eu/dariah/de/search/config/ApplicationConfig.java

 package eu.dariah.de.search.config;
 
 import org.apache.catalina.Context;
+import org.apache.catalina.webresources.ExtractingRoot;
 import org.apache.tomcat.util.scan.StandardJarScanner;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
 import org.springframework.boot.web.server.WebServerFactoryCustomizer;
-import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -28,21 +28,22 @@ public class ApplicationConfig {
  	public void setContextPath(String contextPath) { this.contextPath = contextPath; }
 
 	/**
-	 * WebServerFactoryCustomizer bean that adapts to a configured context path for the application. This adaption is not 
-	 *  necessary for implementation of the dariahsp-core library, but helps with setting up the application as it might 
-	 *  be available or proxied at their deployments
+	 * WebServerFactoryCustomizer bean that adapts to a configured context path for the application. 
+	 * This adaption helps with setting up the application as it might be available or proxied at their deployments
 	 * 
 	 * @return WebServerFactoryCustomizer
 	 */
 	@Bean
-	public WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> webServerFactoryCustomizer() {
+	public WebServerFactoryCustomizer<TomcatServletWebServerFactory> servletContainerCustomizer() {	
 		log.info("Web server context path set to {}", contextPath.isEmpty() ? "/" : contextPath);
-	    return factory -> factory.setContextPath(contextPath);
+		return container -> container.addContextCustomizers(context -> { 
+																context.setReloadable(false); 
+																context.setPath(contextPath);
+															});
 	}
 	
 	/**
-	 * Provides tomcat factory bean disabling TLD scanning: 
-	 * @see https://stackoverflow.com/a/52229296
+	 * Provides tomcat factory
 	 * 
 	 * @return TomcatServletWebServerFactory tomcatFactory
 	 */
@@ -51,6 +52,11 @@ public class ApplicationConfig {
 		return new TomcatServletWebServerFactory() {
 			@Override
 			protected void postProcessContext(Context context) {
+				// extracting packaged war file for better performance:
+				// @see https://stackoverflow.com/a/62759292
+				context.setResources(new ExtractingRoot());
+				// disabling TLD scanning: 
+				// @see https://stackoverflow.com/a/52229296
 				((StandardJarScanner) context.getJarScanner()).setScanManifest(false);
 			}
 		};