new version 0.0.5

Author: pasquy73

RELEASE_NOTE.md

@@ -5,6 +5,8 @@
 ### <code>0.0.5</code> :calendar: 05/02/2025
 **Improvements**
 * Refactoring of `InfoProxyController` and add `DateUtils` dependency.
+* Add `StartupListener` listener to log (display) the current version of *Billing Proxy* at startup.
+* Include exception handling with `ControllerExceptionHandler.java` class.
 
 **BugFixing**
 * Set `org.apache.coyote.http11: INFO` to avoid the `Error parsing HTTP request header`.

src/main/java/it/eng/dome/billing/proxy/config/AppConfig.java

@@ -0,0 +1,14 @@
+package it.eng.dome.billing.proxy.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.client.RestTemplate;
+
+@Configuration
+public class AppConfig {
+
+	@Bean
+	public RestTemplate restTemplate() {
+		return new RestTemplate();
+	}
+}

src/main/java/it/eng/dome/billing/proxy/exception/ControllerExceptionHandler.java

@@ -0,0 +1,72 @@
+package it.eng.dome.billing.proxy.exception;
+
+import java.net.ConnectException;
+import java.net.SocketTimeoutException;
+import java.net.UnknownHostException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.core.Ordered;
+import org.springframework.core.annotation.Order;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.client.HttpServerErrorException;
+import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
+import it.eng.dome.brokerage.exception.ErrorResponse;
+import jakarta.servlet.http.HttpServletRequest;
+
+@Order(Ordered.HIGHEST_PRECEDENCE)
+@ControllerAdvice
+public class ControllerExceptionHandler extends ResponseEntityExceptionHandler {
+	
+	private static final Logger logger = LoggerFactory.getLogger(ControllerExceptionHandler.class);
+
+	@ExceptionHandler(IllegalArgumentException.class)
+	protected ResponseEntity<Object> handleIllegalArgumentException(HttpServletRequest request, IllegalArgumentException ex) {
+		return buildResponseEntity(new ErrorResponse(request, HttpStatus.BAD_REQUEST, ex));
+	}
+	
+	@ExceptionHandler(IllegalStateException.class)
+	protected ResponseEntity<Object> handleIllegalStateException(HttpServletRequest request, IllegalStateException ex) {
+		return buildResponseEntity(new ErrorResponse(request,HttpStatus.BAD_REQUEST, ex));
+	}
+		
+	@ExceptionHandler(ConnectException.class)
+	protected ResponseEntity<Object> handleConnectionException(HttpServletRequest request, ConnectException ex) {
+		return buildResponseEntity(new ErrorResponse(request,HttpStatus.SERVICE_UNAVAILABLE, ex));
+	}	
+	
+	@ExceptionHandler(UnknownHostException.class)
+	protected ResponseEntity<Object> handleConnectionException(HttpServletRequest request, UnknownHostException ex) {
+		return buildResponseEntity(new ErrorResponse(request,HttpStatus.SERVICE_UNAVAILABLE, ex));
+	}
+		
+	@ExceptionHandler(HttpClientErrorException.class)
+	protected ResponseEntity<Object> handleBadRequest(HttpServletRequest request, HttpClientErrorException ex) {
+		return buildResponseEntity(new ErrorResponse(request, HttpStatus.BAD_REQUEST, ex));
+	}
+
+	@ExceptionHandler(HttpServerErrorException.class)
+	protected ResponseEntity<Object> handleInternalServerError(HttpServletRequest request, HttpServerErrorException ex) {
+		return buildResponseEntity(new ErrorResponse(request, HttpStatus.INTERNAL_SERVER_ERROR, ex));
+	}
+
+	@ExceptionHandler(SocketTimeoutException.class)
+	protected ResponseEntity<Object> handleSocketTimeoutError(HttpServletRequest request, SocketTimeoutException ex) {
+		return buildResponseEntity(new ErrorResponse(request, HttpStatus.REQUEST_TIMEOUT, ex));
+	}
+	
+	@ExceptionHandler(it.eng.dome.tmforum.tmf620.v4.ApiException.class)
+	protected ResponseEntity<Object> handleApiException(HttpServletRequest request, it.eng.dome.tmforum.tmf620.v4.ApiException ex) {
+		return buildResponseEntity(new ErrorResponse(request, HttpStatus.SERVICE_UNAVAILABLE, ex));
+	}
+		
+	private ResponseEntity<Object> buildResponseEntity(ErrorResponse errorResponse) {
+		logger.error("{} - {}", errorResponse.getStatus(), errorResponse.getMessage());
+		return new ResponseEntity<>(errorResponse, errorResponse.getStatus());
+	}
+
+}

src/main/java/it/eng/dome/billing/proxy/listener/StartupListener.java

@@ -0,0 +1,46 @@
+package it.eng.dome.billing.proxy.listener;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.context.event.ApplicationReadyEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestTemplate;
+import it.eng.dome.billing.proxy.model.InfoProxy;
+
+@Component
+public class StartupListener {
+
+	private static final Logger logger = LoggerFactory.getLogger(StartupListener.class);
+
+	private final String INFO_PATH = "/proxy/info";
+	private final RestTemplate restTemplate;
+
+	@Value("${server.port}")
+	private int serverPort;
+
+	@Value("${server.servlet.context-path}")
+	private String contextPath;
+
+	public StartupListener(RestTemplate restTemplate) {
+		this.restTemplate = restTemplate;
+	}
+
+	@EventListener(ApplicationReadyEvent.class)
+	public void onApplicationReady() {
+
+		String path = contextPath + INFO_PATH;
+		String url = "http://localhost:" + serverPort + path.replaceAll("//+", "/");
+
+		logger.info("Listener GET call to {}", url);
+		try {
+			InfoProxy response = restTemplate.getForObject(url, InfoProxy.class);
+			logger.info("Started the {} version: {} ", response.getName(), response.getVersion());
+
+		} catch (Exception e) {
+			logger.error("Error calling {}: {}", url, e.getMessage());
+		}
+	}
+
+}

src/main/java/it/eng/dome/billing/proxy/model/InfoProxy.java

@@ -0,0 +1,20 @@
+package it.eng.dome.billing.proxy.model;
+
+public class InfoProxy {
+
+	public String name;
+	public String version;
+	public String release_time;
+
+	public String getName() {
+		return name;
+	}
+
+	public String getVersion() {
+		return version;
+	}
+
+	public String getRelease_time() {
+		return release_time;
+	}
+}