- update: major refactor of the database-service to make it easy to add newer api services

- add: character database api

auth-service/build.rs

@@ -11,6 +11,6 @@ fn main() {
     tonic_build::configure()
         .build_server(false) // Generate gRPC client code
         .compile_well_known_types(true)
-        .compile_protos(&["../proto/database.proto"], &["../proto"])
+        .compile_protos(&["../proto/user_db_api.proto"], &["../proto"])
         .unwrap_or_else(|e| panic!("Failed to compile protos {:?}", e));
 }

auth-service/src/database_client.rs

@@ -1,4 +1,4 @@
-use crate::database::{database_service_client::DatabaseServiceClient, CreateUserRequest, CreateUserResponse, GetUserByEmailRequest, GetUserByUsernameRequest, GetUserRequest, GetUserResponse};
+use crate::database::{user_service_client::UserServiceClient, CreateUserRequest, CreateUserResponse, GetUserByEmailRequest, GetUserByUsernameRequest, GetUserRequest, GetUserResponse};
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use std::error::Error;
@@ -18,7 +18,7 @@ pub trait DatabaseClientTrait: Sized {
 }
 #[derive(Clone)]
 pub struct DatabaseClient {
-    client: DatabaseServiceClient<Channel>,
+    client: UserServiceClient<Channel>,
 }
 
 #[derive(Debug)]
@@ -31,7 +31,7 @@ pub struct PasswordReset {
 #[async_trait]
 impl DatabaseClientTrait for DatabaseClient {
     async fn connect(endpoint: &str) -> Result<Self, Box<dyn std::error::Error>> {
-        let client = DatabaseServiceClient::connect(endpoint.to_string()).await?;
+        let client = UserServiceClient::connect(endpoint.to_string()).await?;
         Ok(Self { client })
     }
 

auth-service/src/lib.rs

@@ -7,7 +7,7 @@ pub mod auth {
     tonic::include_proto!("auth"); // Path matches the package name in auth.proto
 }
 pub mod database {
-    tonic::include_proto!("database"); // Matches package name in database.proto
+    tonic::include_proto!("user_db_api"); // Matches package name in user_db_api.proto
 }
 
 #[cfg(test)]

character-service/build.rs

@@ -11,6 +11,6 @@ fn main() {
     tonic_build::configure()
         .build_server(false) // Generate gRPC client code
         .compile_well_known_types(true)
-        .compile_protos(&["../proto/database.proto", "../proto/auth.proto"], &["../proto"])
+        .compile_protos(&["../proto/user_db_api.proto", "../proto/auth.proto"], &["../proto"])
         .unwrap_or_else(|e| panic!("Failed to compile protos {:?}", e));
 }

database-service/build.rs

@@ -3,6 +3,6 @@ fn main() {
         .build_server(true)
         .compile_well_known_types(true)
         .type_attribute(".", "#[derive(serde::Serialize, serde::Deserialize)]")
-        .compile_protos(&["../proto/database.proto"], &["../proto"])
+        .compile_protos(&["../proto/user_db_api.proto", "../proto/character_db_api.proto"], &["../proto"])
         .unwrap_or_else(|e| panic!("Failed to compile protos {:?}", e));
 }

database-service/src/characters.rs

@@ -0,0 +1,110 @@
+use sqlx::{FromRow, Row};
+use crate::redis_cache::{Cache, RedisCache}; // Import RedisCache
+use serde::{Serialize, Deserialize};
+use std::sync::Arc;
+use tokio::sync::Mutex;
+
+#[derive(Debug, FromRow, Serialize, Deserialize)]
+pub struct Character {
+    pub id: i32,
+    pub user_id: i32,
+    pub name: String,
+    pub level: i16,
+    pub experience: i64,
+    pub inventory: serde_json::Value,
+    pub stats: serde_json::Value,
+    pub looks: serde_json::Value,
+    pub position: serde_json::Value,
+    pub created_at: chrono::NaiveDateTime,
+    pub updated_at: chrono::NaiveDateTime,
+    pub deleted_at: Option<chrono::NaiveDateTime>,
+    pub is_active: bool,
+}
+
+pub struct CharacterRepository {
+    pool: sqlx::PgPool,
+    cache: Arc<Mutex<RedisCache>>, // Thread-safe RedisCache
+}
+
+impl CharacterRepository {
+    pub fn new(pool: sqlx::PgPool, cache: Arc<Mutex<RedisCache>>) -> Self {
+        Self { pool, cache }
+    }
+
+    pub async fn get_character_by_id(&self, character_id: i32) -> Result<Character, sqlx::Error> {
+        let cache_key = format!("character:{}", character_id);
+
+        // Try fetching from Redis cache
+        if let Some(character) = self.cache.lock().await.get::<Character>(&cache_key).await.map_err(|_| sqlx::Error::RowNotFound)? {
+            return Ok(character);
+        }
+
+        // Fetch from database
+        let character = sqlx::query_as::<_, Character>(
+            "SELECT id, user_id, name, level, experience, inventory, stats, looks, position, \
+                    created_at, updated_at, deleted_at, is_active \
+             FROM characters WHERE id = $1 AND is_active = true",
+        )
+            .bind(character_id)
+            .fetch_one(&self.pool)
+            .await?;
+
+        // Cache result
+        self.cache.lock().await.set(&cache_key, &character, 300).await.map_err(|_| sqlx::Error::RowNotFound)?;
+        Ok(character)
+    }
+
+    pub async fn create_character(&self, user_id: i32, name: &str, inventory: serde_json::Value, stats: serde_json::Value, looks: serde_json::Value, position: serde_json::Value) -> Result<i32, sqlx::Error> {
+        let result = sqlx::query(
+            "INSERT INTO characters (user_id, name, level, experience, inventory, stats, looks, position, created_at, updated_at, is_active) \
+             VALUES ($1, $2, 1, 0, $3, $4, $5, $6, NOW(), NOW(), true) RETURNING id",
+        )
+            .bind(user_id)
+            .bind(name)
+            .bind(inventory)
+            .bind(stats)
+            .bind(looks)
+            .bind(position)
+            .fetch_one(&self.pool)
+            .await?;
+
+        Ok(result.get("id"))
+    }
+
+    pub async fn delete_character(&self, character_id: i32) -> Result<(), sqlx::Error> {
+        sqlx::query(
+            "UPDATE characters SET deleted_at = NOW(), is_active = false WHERE id = $1",
+        )
+            .bind(character_id)
+            .execute(&self.pool)
+            .await?;
+
+        // Invalidate cache
+        let cache_key = format!("character:{}", character_id);
+        self.cache.lock().await.delete(&cache_key).await.map_err(|_| sqlx::Error::RowNotFound)?;
+        Ok(())
+    }
+
+    pub async fn get_characters_by_user(&self, user_id: i32) -> Result<Vec<Character>, sqlx::Error> {
+        let cache_key = format!("character:user:{}", user_id);
+
+        // Try fetching from Redis cache
+        if let Some(characters) = self.cache.lock().await.get::<Vec<Character>>(&cache_key).await.map_err(|_| sqlx::Error::RowNotFound)? {
+            return Ok(characters);
+        }
+
+        // Fetch from database
+        let characters = sqlx::query_as::<_, Character>(
+            "SELECT id, user_id, name, level, experience, inventory, stats, looks, position, \
+                    created_at, updated_at, deleted_at, is_active \
+             FROM characters WHERE user_id = $1 AND is_active = true",
+        )
+            .bind(user_id)
+            .fetch_all(&self.pool)
+            .await?;
+
+        // Cache result
+        self.cache.lock().await.set(&cache_key, &characters, 300).await.map_err(|_| sqlx::Error::RowNotFound)?;
+        Ok(characters)
+    }
+}

database-service/src/db.rs

@@ -1,24 +1,23 @@
+use crate::users::UserRepository;
+use crate::characters::CharacterRepository;
 use crate::redis_cache::RedisCache;
-use crate::users::UsersService;
 use sqlx::PgPool;
 use std::sync::Arc;
+use tokio::sync::Mutex;
 
 pub struct Database {
-    pub users_service: UsersService, // User-specific functionality
+    pub user_repo: Arc<UserRepository>,
+    pub character_repo: Arc<CharacterRepository>,
 }
 
 impl Database {
-    pub async fn new(pool: PgPool, cache: Arc<RedisCache>) -> Self {
+    pub fn new(pool: PgPool, redis_cache: Arc<Mutex<RedisCache>>) -> Self {
-        let users_service = UsersService { pool, cache };
+        let user_repo = Arc::new(UserRepository::new(pool.clone(), redis_cache.clone()));
+        let character_repo = Arc::new(CharacterRepository::new(pool.clone(), redis_cache));
 
-        Self { users_service }
+        Self {
-    }
+            user_repo,
-
+            character_repo,
-    pub async fn health_check(&self) -> bool {
+        }
-        // Simple query to check database health
-        sqlx::query("SELECT 1")
-            .execute(&self.users_service.pool)
-            .await
-            .is_ok()
     }
 }

database-service/src/grpc/character_service.rs

@@ -0,0 +1,93 @@
+use crate::grpc::{CharacterRequest, CharacterResponse, CreateCharacterRequest, DeleteCharacterRequest, Empty};
+use crate::grpc::character_service_server::CharacterService;
+use crate::grpc::database_service::MyDatabaseService;
+use tonic::{Request, Response, Status};
+
+#[tonic::async_trait]
+impl CharacterService for MyDatabaseService {
+    async fn get_character(
+        &self,
+        request: Request<CharacterRequest>,
+    ) -> Result<Response<CharacterResponse>, Status> {
+        let req = request.into_inner();
+        let repo = &self.db.character_repo;
+
+        let character = repo
+            .get_character_by_id(req.character_id)
+            .await
+            .map_err(|_| Status::not_found("Character not found"))?;
+
+        let response = CharacterResponse {
+            id: character.id,
+            user_id: character.user_id,
+            name: character.name,
+            level: character.level as i32,
+            experience: character.experience,
+            inventory: character.inventory.to_string(),
+            stats: character.stats.to_string(),
+            looks: character.looks.to_string(),
+            position: character.position.to_string(),
+            created_at: character.created_at.to_string(),
+            updated_at: character.updated_at.to_string(),
+            is_active: character.is_active,
+        };
+
+        Ok(Response::new(response))
+    }
+
+    async fn create_character(
+        &self,
+        request: Request<CreateCharacterRequest>,
+    ) -> Result<Response<CharacterResponse>, Status> {
+        let req = request.into_inner();
+        let repo = &self.db.character_repo;
+
+        let character_id = repo
+            .create_character(
+                req.user_id,
+                &req.name,
+                serde_json::from_str(&req.inventory).unwrap_or_default(),
+                serde_json::from_str(&req.stats).unwrap_or_default(),
+                serde_json::from_str(&req.looks).unwrap_or_default(),
+                serde_json::from_str(&req.position).unwrap_or_default(),
+            )
+            .await
+            .map_err(|_| Status::internal("Failed to create character"))?;
+
+        let character = repo
+            .get_character_by_id(character_id)
+            .await
+            .map_err(|_| Status::not_found("Character not found"))?;
+
+        let response = CharacterResponse {
+            id: character.id,
+            user_id: character.user_id,
+            name: character.name,
+            level: character.level as i32,
+            experience: character.experience,
+            inventory: character.inventory.to_string(),
+            stats: character.stats.to_string(),
+            looks: character.looks.to_string(),
+            position: character.position.to_string(),
+            created_at: character.created_at.to_string(),
+            updated_at: character.updated_at.to_string(),
+            is_active: character.is_active,
+        };
+
+        Ok(Response::new(response))
+    }
+
+    async fn delete_character(
+        &self,
+        request: Request<DeleteCharacterRequest>,
+    ) -> Result<Response<Empty>, Status> {
+        let req = request.into_inner();
+        let repo = &self.db.character_repo;
+
+        repo.delete_character(req.character_id)
+            .await
+            .map_err(|_| Status::internal("Failed to delete character"))?;
+
+        Ok(Response::new(Empty {}))
+    }
+}

database-service/src/grpc/database_service.rs

@@ -0,0 +1,7 @@
+use crate::db::Database;
+use std::sync::Arc;
+
+#[derive(Clone)]
+pub struct MyDatabaseService {
+    pub db: Arc<Database>, // Use the Database struct from users.rs
+}

database-service/src/grpc/mod.rs

@@ -0,0 +1,6 @@
+pub mod database_service;
+pub mod user_service;
+mod character_service;
+
+tonic::include_proto!("user_db_api");
+tonic::include_proto!("character_db_api");

database-service/src/grpc/user_service.rs

@@ -1,22 +1,17 @@
-use crate::database::{CreateUserRequest, CreateUserResponse, GetUserByEmailRequest, GetUserByUsernameRequest, GetUserRequest, GetUserResponse};
+use crate::grpc::{CreateUserRequest, CreateUserResponse, GetUserByEmailRequest, GetUserByUsernameRequest, GetUserRequest, GetUserResponse};
-use crate::db::Database;
+use crate::grpc::user_service_server::UserService;
+use crate::grpc::database_service::MyDatabaseService;
 use tonic::{Request, Response, Status};
 
-use crate::database::database_service_server::DatabaseService;
-
-pub struct MyDatabaseService {
-    pub db: Database, // Use the Database struct from users.rs
-}
-
 #[tonic::async_trait]
-impl DatabaseService for MyDatabaseService {
+impl UserService for MyDatabaseService {
     async fn get_user(
         &self,
         request: Request<GetUserRequest>,
     ) -> Result<Response<GetUserResponse>, Status> {
         let req = request.into_inner();
 
-        let user = self.db.users_service.get_user_by_id(req.user_id)
+        let user = self.db.user_repo.get_user_by_id(req.user_id)
             .await
             .map_err(|_| Status::not_found("User not found"))?;
 
@@ -35,7 +30,7 @@ impl DatabaseService for MyDatabaseService {
     ) -> Result<Response<CreateUserResponse>, Status> {
         let req = request.into_inner();
 
-        let user_id = self.db.users_service.create_user(&req.username, &req.email, &req.hashed_password)
+        let user_id = self.db.user_repo.create_user(&req.username, &req.email, &req.hashed_password, &[])
             .await
             .map_err(|_| Status::internal("Failed to create user"))?;
 
@@ -49,7 +44,7 @@ impl DatabaseService for MyDatabaseService {
     ) -> Result<Response<GetUserResponse>, Status> {
         let req = request.into_inner();
 
-        let user = self.db.users_service.get_user_by_username(&req.username)
+        let user = self.db.user_repo.get_user_by_username(&req.username)
             .await
             .map_err(|_| Status::not_found("User not found"))?;
 
@@ -68,7 +63,7 @@ impl DatabaseService for MyDatabaseService {
     ) -> Result<Response<GetUserResponse>, Status> {
         let req = request.into_inner();
 
-        let user = self.db.users_service.get_user_by_email(&req.email)
+        let user = self.db.user_repo.get_user_by_email(&req.email)
             .await
             .map_err(|_| Status::not_found("User not found"))?;
 

database-service/src/lib.rs

@@ -1,8 +1,5 @@
 pub mod users;
+pub mod characters;
 pub mod redis_cache;
 pub mod db;
-pub mod grpc;
+pub mod grpc;
-
-pub mod database {
-    tonic::include_proto!("database");
-}

database-service/src/main.rs

@@ -1,19 +1,18 @@
 use std::collections::HashMap;
-use database::database_service_server::DatabaseServiceServer;
-use database_service::database;
 use database_service::db::Database;
-use database_service::grpc::MyDatabaseService;
+use database_service::grpc::database_service::MyDatabaseService;
+use database_service::grpc::user_service_server::UserServiceServer;
+use database_service::grpc::character_service_server::CharacterServiceServer;
 use database_service::redis_cache::RedisCache;
 use dotenv::dotenv;
 use sqlx::postgres::PgPoolOptions;
 use std::env;
-use std::net::ToSocketAddrs;
 use std::str::FromStr;
 use std::sync::Arc;
 use tokio::{select, signal};
+use tokio::sync::Mutex;
 use tonic::transport::Server;
 use tracing::{info, Level};
-use warp::Filter;
 use utils::consul_registration;
 
 #[tokio::main]
@@ -32,15 +31,14 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     let consul_url = env::var("CONSUL_URL").unwrap_or_else(|_| "http://127.0.0.1:8500".to_string());
     let service_name = env::var("SERVICE_NAME").unwrap_or_else(|_| "database-service".to_string());
-    let service_address = env::var("DATABASE_SERVICE_ADDR").unwrap_or_else(|_| "127.0.0.1".to_string());;
+    let service_address = env::var("DATABASE_SERVICE_ADDR").unwrap_or_else(|_| "127.0.0.1".to_string());
     let service_port = port.clone();
     let health_check_url = format!("http://{}:{}/health", service_address, health_port);
-    let health_check_endpoint_addr = format!("{}:{}", service_address, health_port);
     
     // Register service with Consul
     let service_id = consul_registration::generate_service_id();
     let tags = vec!["version-1.0".to_string()];
-    let mut meta = HashMap::new();
+    let meta = HashMap::new();
     consul_registration::register_service(
         &consul_url,
         service_id.as_str(),
@@ -63,18 +61,17 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .await
         .expect("Failed to create PostgreSQL connection pool");
 
-    let redis_cache = RedisCache::new(&redis_url);
 
-    let cache = Arc::new(redis_cache); // Share the cache instance between tasks
+    let redis_cache = Arc::new(Mutex::new(RedisCache::new(&redis_url)));
-    let database_service = MyDatabaseService {
+    let db = Arc::new(Database::new(pool, redis_cache));
-        db: Database::new(pool, cache).await,
+    let my_service = MyDatabaseService { db };
-    };
 
     // Pass `shared_cache` into services as needed
     info!("Database Service running on {}", address);
     tokio::spawn(Server::builder()
-            .add_service(DatabaseServiceServer::new(database_service))
+        .add_service(UserServiceServer::new(my_service.clone()))
-            .serve(address));
+        .add_service(CharacterServiceServer::new(my_service))
+        .serve(address));
 
     select! {
         _ = signal::ctrl_c() => {},

database-service/src/users.rs

@@ -1,168 +1,121 @@
-use crate::redis_cache::{Cache, RedisCache};
+use sqlx::{FromRow, Row};
-use serde::{Deserialize, Serialize};
+use crate::redis_cache::{RedisCache, Cache}; // Import RedisCache and Cache Trait
-use sqlx::Error;
+use serde::{Serialize, Deserialize};
-use sqlx::PgPool;
 use std::sync::Arc;
+use tokio::sync::Mutex;
 
-
+#[derive(Debug, FromRow, Serialize, Deserialize)]
-#[derive(Debug, Serialize, Deserialize)]
 pub struct User {
     pub id: i32,
     pub username: String,
     pub email: String,
     pub hashed_password: String,
     pub roles: Vec<String>,
+    pub created_at: chrono::NaiveDateTime,
+    pub updated_at: chrono::NaiveDateTime,
 }
 
-pub struct UsersService {
+pub struct UserRepository {
-    pub pool: PgPool,
+    pool: sqlx::PgPool,
-    pub cache: Arc<RedisCache>, // Shared Redis cache
+    cache: Arc<Mutex<RedisCache>>, // Thread-safe RedisCache
 }
 
-
+impl UserRepository {
-impl UsersService {
+    pub fn new(pool: sqlx::PgPool, cache: Arc<Mutex<RedisCache>>) -> Self {
-    pub async fn create_user(
+        Self { pool, cache }
-        &self,
-        username: &str,
-        email: &str,
-        hashed_password: &str,
-    ) -> Result<i32, Error> {
-        let result = sqlx::query!(
-            r#"
-            INSERT INTO users (username, email, hashed_password)
-            VALUES ($1, $2, $3)
-            RETURNING id
-            "#,
-            username,
-            email,
-            hashed_password
-        )
-            .fetch_one(&self.pool)
-            .await?;
-
-        Ok(result.id)
     }
 
     pub async fn get_user_by_id(&self, user_id: i32) -> Result<User, sqlx::Error> {
-        // Check Redis cache first
+        let cache_key = format!("user:{}", user_id);
-        if let Ok(Some(cached_user)) = self.cache.get::<User>(&format!("user:{}", user_id)).await {
+
-            return Ok(cached_user);
+        if let Some(user) = self.cache.lock().await.get::<User>(&cache_key).await.map_err(|_| sqlx::Error::RowNotFound)? {
+            return Ok(user);
         }
 
-        // Fetch from PostgreSQL
+        let user = sqlx::query_as::<_, User>(
-        let row = sqlx::query!(
+            "SELECT id, username, email, hashed_password, roles, created_at, updated_at FROM users WHERE id = $1",
-            "SELECT id, username, email, hashed_password, roles FROM users WHERE id = $1",
-            user_id
-        )
-            .fetch_one(&self.pool)
-            .await?;
-        
-        let user = User {
-            id: row.id,
-            username: row.username,
-            email: row.email,
-            hashed_password: row.hashed_password,
-            roles: row.roles.unwrap_or_default(),
-        };
-
-        // Store result in Redis
-        self.cache
-            .set(&format!("user:{}", user_id), &user, 3600)
-            .await
-            .unwrap_or_else(|err| eprintln!("Failed to cache user: {:?}", err));
-
-        Ok(user)
-    }
-
-    pub async fn get_user_by_username(&self, username: &str) -> Result<User, Error> {
-        // Check Redis cache first
-        if let Ok(Some(cached_user)) = self.cache.get::<User>(&format!("user_by_username:{}", username)).await {
-            return Ok(cached_user);
-        }
-
-        // Fetch from PostgreSQL
-        let row = sqlx::query!(
-            "SELECT id, username, email, hashed_password, roles FROM users WHERE username = $1",
-            username
         )
+            .bind(user_id)
             .fetch_one(&self.pool)
             .await?;
 
-        let user = User {
+        self.cache.lock().await.set(&cache_key, &user, 300).await.map_err(|_| sqlx::Error::RowNotFound)?;
-            id: row.id,
-            username: row.username,
-            email: row.email,
-            hashed_password: row.hashed_password,
-            roles: row.roles.unwrap_or_default(),
-        };
-
-        // Store result in Redis
-        self.cache
-            .set(&format!("user_by_username:{}", username), &user, 3600)
-            .await
-            .unwrap_or_else(|err| eprintln!("Failed to cache user: {:?}", err));
-
         Ok(user)
     }
 
-    pub async fn get_user_by_email(&self, email: &str) -> Result<User, Error> {
+    pub async fn get_user_by_username(&self, username: &str) -> Result<User, sqlx::Error> {
-        // Check Redis cache first
+        let cache_key = format!("user:username:{}", username);
-        if let Ok(Some(cached_user)) = self.cache.get::<User>(&format!("user_by_email:{}", email)).await {
+
-            return Ok(cached_user);
+        if let Some(user) = self.cache.lock().await.get::<User>(&cache_key).await.map_err(|_| sqlx::Error::RowNotFound)? {
+            return Ok(user);
         }
 
-        // Fetch from PostgreSQL
+        let user = sqlx::query_as::<_, User>(
-        let row = sqlx::query!(
+            "SELECT id, username, email, hashed_password, roles, created_at, updated_at FROM users WHERE username = $1",
-            "SELECT id, username, email, hashed_password, roles FROM users WHERE email = $1",
-            email
         )
+            .bind(username)
             .fetch_one(&self.pool)
             .await?;
 
-        let user = User {
+        self.cache.lock().await.set(&cache_key, &user, 300).await.map_err(|_| sqlx::Error::RowNotFound)?;
-            id: row.id,
-            username: row.username,
-            email: row.email,
-            hashed_password: row.hashed_password,
-            roles: row.roles.unwrap_or_default(),
-        };
-
-        // Store result in Redis
-        self.cache
-            .set(&format!("user_by_email:{}", email), &user, 3600)
-            .await
-            .unwrap_or_else(|err| eprintln!("Failed to cache user: {:?}", err));
-
         Ok(user)
     }
 
-    pub async fn update_user_email(&self, user_id: i32, new_email: &str) -> Result<(), Error> {
+    pub async fn get_user_by_email(&self, email: &str) -> Result<User, sqlx::Error> {
-        sqlx::query!(
+        let cache_key = format!("user:email:{}", email);
-            r#"
+
-            UPDATE users
+        if let Some(user) = self.cache.lock().await.get::<User>(&cache_key).await.map_err(|_| sqlx::Error::RowNotFound)? {
-            SET email = $1, updated_at = CURRENT_TIMESTAMP
+            return Ok(user);
-            WHERE id = $2
+        }
-            "#,
+
-            new_email,
+        let user = sqlx::query_as::<_, User>(
-            user_id
+            "SELECT id, username, email, hashed_password, roles, created_at, updated_at FROM users WHERE email = $1",
         )
+            .bind(email)
+            .fetch_one(&self.pool)
+            .await?;
+
+        self.cache.lock().await.set(&cache_key, &user, 300).await.map_err(|_| sqlx::Error::RowNotFound)?;
+        Ok(user)
+    }
+
+    pub async fn create_user(&self, username: &str, email: &str, hashed_password: &str, roles: &[String]) -> Result<i32, sqlx::Error> {
+        let row = sqlx::query(
+            "INSERT INTO users (username, email, hashed_password, roles, created_at, updated_at) \
+             VALUES ($1, $2, $3, $4, NOW(), NOW()) RETURNING id",
+        )
+            .bind(username)
+            .bind(email)
+            .bind(hashed_password)
+            .bind(roles)
+            .fetch_one(&self.pool)
+            .await?;
+
+        Ok(row.get("id"))
+    }
+
+    pub async fn update_user_email(&self, user_id: i32, new_email: &str) -> Result<(), sqlx::Error> {
+        sqlx::query(
+            "UPDATE users SET email = $1, updated_at = NOW() WHERE id = $2",
+        )
+            .bind(new_email)
+            .bind(user_id)
             .execute(&self.pool)
             .await?;
 
+        let cache_key = format!("user:{}", user_id);
+        self.cache.lock().await.delete(&cache_key).await.map_err(|_| sqlx::Error::RowNotFound)?;
         Ok(())
     }
 
-    pub async fn delete_user(&self, user_id: i32) -> Result<(), Error> {
+    pub async fn delete_user(&self, user_id: i32) -> Result<(), sqlx::Error> {
-        sqlx::query!(
+        sqlx::query("DELETE FROM users WHERE id = $1")
-            r#"
+            .bind(user_id)
-            DELETE FROM users
-            WHERE id = $1
-            "#,
-            user_id
-        )
             .execute(&self.pool)
             .await?;
 
+        let cache_key = format!("user:{}", user_id);
+        self.cache.lock().await.delete(&cache_key).await.map_err(|_| sqlx::Error::RowNotFound)?;
         Ok(())
     }
 }

proto/character_db_api.proto

@@ -0,0 +1,43 @@
+syntax = "proto3";
+
+package character_db_api;
+
+service CharacterService {
+    rpc GetCharacter (CharacterRequest) returns (CharacterResponse);
+    rpc CreateCharacter (CreateCharacterRequest) returns (CharacterResponse);
+    rpc DeleteCharacter (DeleteCharacterRequest) returns (Empty);
+}
+
+message CharacterRequest {
+    int32 character_id = 1;
+}
+
+message CreateCharacterRequest {
+    int32 user_id = 1;
+    string name = 2;
+    string inventory = 3; // JSON serialized
+    string stats = 4;     // JSON serialized
+    string looks = 5;     // JSON serialized
+    string position = 6;  // JSON serialized
+}
+
+message DeleteCharacterRequest {
+    int32 character_id = 1;
+}
+
+message CharacterResponse {
+    int32 id = 1;
+    int32 user_id = 2;
+    string name = 3;
+    int32 level = 4;
+    int64 experience = 5;
+    string inventory = 6;
+    string stats = 7;
+    string looks = 8;
+    string position = 9;
+    string created_at = 10;
+    string updated_at = 11;
+    bool is_active = 12;
+}
+
+message Empty {}

proto/user_db_api.proto

@@ -1,8 +1,8 @@
 syntax = "proto3";
 
-package database;
+package user_db_api;
 
-service DatabaseService {
+service UserService {
     rpc GetUser(GetUserRequest) returns (GetUserResponse);
     rpc CreateUser(CreateUserRequest) returns (CreateUserResponse);
     rpc GetUserByUsername(GetUserByUsernameRequest) returns (GetUserResponse);

utils/src/service_discovery.rs

@@ -35,8 +35,6 @@ pub async fn get_service_address(consul_url: &str, service_name: &str) -> Result
         Ok(nodes)
     }
 }
-
-// Example of filtering services with a specific tag
 async fn get_services_with_tag(
     service_name: &str,
     tag: &str,

world-service/build.rs

@@ -11,6 +11,6 @@ fn main() {
     tonic_build::configure()
         .build_server(false) // Generate gRPC client code
         .compile_well_known_types(true)
-        .compile_protos(&["../proto/database.proto", "../proto/auth.proto"], &["../proto"])
+        .compile_protos(&["../proto/user_db_api.proto", "../proto/auth.proto"], &["../proto"])
         .unwrap_or_else(|e| panic!("Failed to compile protos {:?}", e));
 }