Initial Python rewrite

src.bak/main/java/com/example/config/DlpConfig.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2025 Google. This software is provided as-is, without warranty or representation for any use or purpose. 
+ * Your use of it is subject to your agreement with Google.
+ */
+
+package com.example.config;
+
+import com.google.cloud.dlp.v2.DlpServiceClient;
+import java.io.IOException;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class DlpConfig {
+
+	@Bean(destroyMethod = "close")
+	public DlpServiceClient dlpServiceClient() throws IOException {
+		return DlpServiceClient.create();
+	}
+}

src.bak/main/java/com/example/config/GeminiConfig.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2025 Google. This software is provided as-is, without warranty or representation for any use or purpose. 
+ * Your use of it is subject to your agreement with Google.
+ */
+
+package com.example.config;
+
+import com.google.genai.Client;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.io.IOException;
+
+/**
+ * Spring configuration class for initializing the Google Gen AI Client.
+ * It uses properties from the application's configuration to create a
+ * singleton `Client` bean for interacting with the Gemini model, ensuring
+ * proper resource management by specifying a destroy method.
+ */
+@Configuration
+public class GeminiConfig {
+
+    private static final Logger logger = LoggerFactory.getLogger(GeminiConfig.class);
+
+    @Value("${google.cloud.project}")
+    private String projectId;
+
+    @Value("${google.cloud.location}")
+    private String location;
+
+    @Bean(destroyMethod = "close")
+    public Client geminiClient() throws IOException {
+        logger.info("Initializing Google Gen AI Client. Project: {}, Location: {}", projectId, location);
+        return Client.builder()
+                .project(projectId)
+                .location(location)
+                .vertexAI(true) 
+                .build();
+    }
+
+}

src.bak/main/java/com/example/config/OpenApiConfig.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2025 Google. This software is provided as-is, without warranty or representation for any use or purpose. 
+ * Your use of it is subject to your agreement with Google.
+ */
+
+package com.example.config;
+
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.info.License;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Spring configuration class for customizing OpenAPI (Swagger) documentation.
+ * It defines a single bean to configure the API's title, version, description,
+ * and license, providing a structured and user-friendly documentation page.
+ */
+@Configuration
+public class OpenApiConfig {
+
+    @Bean
+    public OpenAPI customOpenAPI() {
+        return new OpenAPI()
+                .info(new Info()
+                        .title("Google Middleware API")
+                        .version("1.0")
+                        .description("API documentation. " +
+                                    "It provides functionalities for user management, file storage, and more.")
+                        .termsOfService("http://swagger.io/terms/")
+                        .license(new License().name("Apache 2.0").url("http://springdoc.org")));
+    }
+}

src.bak/main/java/com/example/config/RedisConfig.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2025 Google. This software is provided as-is, without warranty or representation for any use or purpose. 
+ * Your use of it is subject to your agreement with Google.
+ */
+
+package com.example.config;
+
+import com.example.dto.dialogflow.conversation.ConversationMessageDTO;
+import com.example.dto.dialogflow.conversation.ConversationSessionDTO;
+import com.example.dto.dialogflow.notification.NotificationSessionDTO;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.ReactiveRedisConnectionFactory;
+import org.springframework.data.redis.core.ReactiveRedisTemplate;
+import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+@Configuration
+public class RedisConfig {
+
+    @Bean
+    public ReactiveRedisTemplate<String, ConversationSessionDTO> reactiveRedisTemplate(ReactiveRedisConnectionFactory factory, ObjectMapper objectMapper) {
+        Jackson2JsonRedisSerializer<ConversationSessionDTO> serializer = new Jackson2JsonRedisSerializer<>(objectMapper, ConversationSessionDTO.class);
+        RedisSerializationContext.RedisSerializationContextBuilder<String, ConversationSessionDTO> builder = RedisSerializationContext.newSerializationContext(new StringRedisSerializer());
+        RedisSerializationContext<String, ConversationSessionDTO> context = builder.value(serializer).build();
+        return new ReactiveRedisTemplate<>(factory, context);
+    }
+
+    @Bean
+    public ReactiveRedisTemplate<String, NotificationSessionDTO> reactiveNotificationRedisTemplate(ReactiveRedisConnectionFactory factory, ObjectMapper objectMapper) {
+        Jackson2JsonRedisSerializer<NotificationSessionDTO> serializer = new Jackson2JsonRedisSerializer<>(objectMapper, NotificationSessionDTO.class);
+        RedisSerializationContext.RedisSerializationContextBuilder<String, NotificationSessionDTO> builder = RedisSerializationContext.newSerializationContext(new StringRedisSerializer());
+        RedisSerializationContext<String, NotificationSessionDTO> context = builder.value(serializer).build();
+        return new ReactiveRedisTemplate<>(factory, context);
+    }
+
+    @Bean
+    public ReactiveRedisTemplate<String, ConversationMessageDTO> reactiveMessageRedisTemplate(ReactiveRedisConnectionFactory factory, ObjectMapper objectMapper) {
+        Jackson2JsonRedisSerializer<ConversationMessageDTO> serializer = new Jackson2JsonRedisSerializer<>(objectMapper, ConversationMessageDTO.class);
+        RedisSerializationContext.RedisSerializationContextBuilder<String, ConversationMessageDTO> builder = RedisSerializationContext.newSerializationContext(new StringRedisSerializer());
+        RedisSerializationContext<String, ConversationMessageDTO> context = builder.value(serializer).build();
+        return new ReactiveRedisTemplate<>(factory, context);
+    }
+
+    @Bean
+    public ReactiveRedisTemplate<String, String> reactiveStringRedisTemplate(ReactiveRedisConnectionFactory factory) {
+        return new ReactiveRedisTemplate<>(factory, RedisSerializationContext.string());
+    }
+}