Generate JHipster 9.3.0 baseline application

src/main/java/com/example/questionbank/config/LoggingConfiguration.java

@@ -0,0 +1,47 @@
+package com.example.questionbank.config;
+
+import static tech.jhipster.config.logging.LoggingUtils.*;
+
+import ch.qos.logback.classic.LoggerContext;
+import java.util.HashMap;
+import java.util.Map;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Configuration;
+import tech.jhipster.config.JHipsterProperties;
+import tools.jackson.core.JacksonException;
+import tools.jackson.databind.ObjectMapper;
+
+/*
+ * Configures the console and Logstash log appenders from the app properties
+ */
+@Configuration
+public class LoggingConfiguration {
+
+    public LoggingConfiguration(
+        @Value("${spring.application.name}") String appName,
+        @Value("${server.port}") String serverPort,
+        JHipsterProperties jHipsterProperties,
+        ObjectMapper mapper
+    ) throws JacksonException {
+        LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
+
+        Map<String, String> map = new HashMap<>();
+        map.put("app_name", appName);
+        map.put("app_port", serverPort);
+        var customFields = mapper.writeValueAsString(map);
+
+        var loggingProperties = jHipsterProperties.getLogging();
+        var logstashProperties = loggingProperties.getLogstash();
+
+        if (loggingProperties.isUseJsonFormat()) {
+            addJsonConsoleAppender(context, customFields);
+        }
+        if (logstashProperties.isEnabled()) {
+            addLogstashTcpSocketAppender(context, customFields, logstashProperties);
+        }
+        if (loggingProperties.isUseJsonFormat() || logstashProperties.isEnabled()) {
+            addContextListener(context, customFields, loggingProperties);
+        }
+    }
+}