Initial microservices setup from artifacts

services/auth/app/api/auth.py

@@ -0,0 +1,124 @@
+"""
+Authentication API routes
+"""
+
+from fastapi import APIRouter, Depends, HTTPException, status, Request
+from sqlalchemy.ext.asyncio import AsyncSession
+import logging
+
+from app.core.database import get_db
+from app.schemas.auth import UserRegistration, UserLogin, TokenResponse, RefreshTokenRequest, UserResponse
+from app.services.auth_service import AuthService
+from app.core.security import security_manager
+
+logger = logging.getLogger(__name__)
+router = APIRouter()
+
+@router.post("/register", response_model=UserResponse)
+async def register(
+    user_data: UserRegistration,
+    db: AsyncSession = Depends(get_db)
+):
+    """Register a new user"""
+    try:
+        return await AuthService.register_user(user_data, db)
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Registration error: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="Registration failed"
+        )
+
+@router.post("/login", response_model=TokenResponse)
+async def login(
+    login_data: UserLogin,
+    request: Request,
+    db: AsyncSession = Depends(get_db)
+):
+    """User login"""
+    try:
+        ip_address = request.client.host
+        user_agent = request.headers.get("user-agent", "")
+        
+        return await AuthService.login_user(login_data, db, ip_address, user_agent)
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Login error: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="Login failed"
+        )
+
+@router.post("/refresh", response_model=TokenResponse)
+async def refresh_token(
+    refresh_data: RefreshTokenRequest,
+    db: AsyncSession = Depends(get_db)
+):
+    """Refresh access token"""
+    try:
+        return await AuthService.refresh_token(refresh_data.refresh_token, db)
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Token refresh error: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="Token refresh failed"
+        )
+
+@router.post("/verify")
+async def verify_token(
+    request: Request,
+    db: AsyncSession = Depends(get_db)
+):
+    """Verify access token"""
+    try:
+        auth_header = request.headers.get("Authorization")
+        if not auth_header or not auth_header.startswith("Bearer "):
+            raise HTTPException(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                detail="Authorization header required"
+            )
+        
+        token = auth_header.split(" ")[1]
+        return await AuthService.verify_token(token, db)
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Token verification error: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="Token verification failed"
+        )
+
+@router.post("/logout")
+async def logout(
+    request: Request,
+    db: AsyncSession = Depends(get_db)
+):
+    """User logout"""
+    try:
+        auth_header = request.headers.get("Authorization")
+        if not auth_header or not auth_header.startswith("Bearer "):
+            raise HTTPException(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                detail="Authorization header required"
+            )
+        
+        token = auth_header.split(" ")[1]
+        user_data = await AuthService.verify_token(token, db)
+        
+        await AuthService.logout_user(user_data["user_id"], db)
+        
+        return {"message": "Logged out successfully"}
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f"Logout error: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="Logout failed"
+        )

services/auth/app/core/config.py

@@ -0,0 +1,47 @@
+"""
+Authentication service configuration
+"""
+
+import os
+from pydantic import BaseSettings
+
+class Settings(BaseSettings):
+    """Application settings"""
+    
+    # Basic settings
+    APP_NAME: str = "Authentication Service"
+    VERSION: str = "1.0.0"
+    DEBUG: bool = os.getenv("DEBUG", "False").lower() == "true"
+    LOG_LEVEL: str = os.getenv("LOG_LEVEL", "INFO")
+    
+    # Database settings
+    DATABASE_URL: str = os.getenv("DATABASE_URL", "postgresql+asyncpg://auth_user:auth_pass123@auth-db:5432/auth_db")
+    
+    # Redis settings
+    REDIS_URL: str = os.getenv("REDIS_URL", "redis://redis:6379/0")
+    
+    # JWT settings
+    JWT_SECRET_KEY: str = os.getenv("JWT_SECRET_KEY", "your-super-secret-jwt-key")
+    JWT_ALGORITHM: str = os.getenv("JWT_ALGORITHM", "HS256")
+    JWT_ACCESS_TOKEN_EXPIRE_MINUTES: int = int(os.getenv("JWT_ACCESS_TOKEN_EXPIRE_MINUTES", "30"))
+    JWT_REFRESH_TOKEN_EXPIRE_DAYS: int = int(os.getenv("JWT_REFRESH_TOKEN_EXPIRE_DAYS", "7"))
+    
+    # Password settings
+    PASSWORD_MIN_LENGTH: int = 8
+    PASSWORD_REQUIRE_UPPERCASE: bool = True
+    PASSWORD_REQUIRE_LOWERCASE: bool = True
+    PASSWORD_REQUIRE_NUMBERS: bool = True
+    PASSWORD_REQUIRE_SYMBOLS: bool = False
+    
+    # Security settings
+    BCRYPT_ROUNDS: int = 12
+    MAX_LOGIN_ATTEMPTS: int = 5
+    LOCKOUT_DURATION_MINUTES: int = 30
+    
+    # RabbitMQ settings
+    RABBITMQ_URL: str = os.getenv("RABBITMQ_URL", "amqp://bakery:forecast123@rabbitmq:5672/")
+    
+    class Config:
+        env_file = ".env"
+
+settings = Settings()

services/auth/app/core/database.py

@@ -0,0 +1,12 @@
+"""
+Database configuration for auth service
+"""
+
+from shared.database.base import DatabaseManager
+from app.core.config import settings
+
+# Initialize database manager
+database_manager = DatabaseManager(settings.DATABASE_URL)
+
+# Alias for convenience
+get_db = database_manager.get_db

services/auth/app/core/security.py

@@ -0,0 +1,153 @@
+"""
+Security utilities for authentication service
+"""
+
+import bcrypt
+import re
+from datetime import datetime, timedelta
+from typing import Optional, Dict, Any
+import redis.asyncio as redis
+from fastapi import HTTPException, status
+import logging
+
+from app.core.config import settings
+from shared.auth.jwt_handler import JWTHandler
+
+logger = logging.getLogger(__name__)
+
+# Initialize JWT handler
+jwt_handler = JWTHandler(settings.JWT_SECRET_KEY, settings.JWT_ALGORITHM)
+
+# Redis client for session management
+redis_client = redis.from_url(settings.REDIS_URL)
+
+class SecurityManager:
+    """Security utilities for authentication"""
+    
+    @staticmethod
+    def hash_password(password: str) -> str:
+        """Hash password using bcrypt"""
+        salt = bcrypt.gensalt(rounds=settings.BCRYPT_ROUNDS)
+        return bcrypt.hashpw(password.encode('utf-8'), salt).decode('utf-8')
+    
+    @staticmethod
+    def verify_password(password: str, hashed_password: str) -> bool:
+        """Verify password against hash"""
+        return bcrypt.checkpw(password.encode('utf-8'), hashed_password.encode('utf-8'))
+    
+    @staticmethod
+    def validate_password(password: str) -> bool:
+        """Validate password strength"""
+        if len(password) < settings.PASSWORD_MIN_LENGTH:
+            return False
+        
+        if settings.PASSWORD_REQUIRE_UPPERCASE and not re.search(r'[A-Z]', password):
+            return False
+        
+        if settings.PASSWORD_REQUIRE_LOWERCASE and not re.search(r'[a-z]', password):
+            return False
+        
+        if settings.PASSWORD_REQUIRE_NUMBERS and not re.search(r'\d', password):
+            return False
+        
+        if settings.PASSWORD_REQUIRE_SYMBOLS and not re.search(r'[!@#$%^&*(),.?":{}|<>]', password):
+            return False
+        
+        return True
+    
+    @staticmethod
+    def create_access_token(user_data: Dict[str, Any]) -> str:
+        """Create JWT access token"""
+        expires_delta = timedelta(minutes=settings.JWT_ACCESS_TOKEN_EXPIRE_MINUTES)
+        return jwt_handler.create_access_token(user_data, expires_delta)
+    
+    @staticmethod
+    def create_refresh_token(user_data: Dict[str, Any]) -> str:
+        """Create JWT refresh token"""
+        expires_delta = timedelta(days=settings.JWT_REFRESH_TOKEN_EXPIRE_DAYS)
+        return jwt_handler.create_refresh_token(user_data, expires_delta)
+    
+    @staticmethod
+    def verify_token(token: str) -> Optional[Dict[str, Any]]:
+        """Verify JWT token"""
+        return jwt_handler.verify_token(token)
+    
+    @staticmethod
+    async def check_login_attempts(email: str) -> bool:
+        """Check if user has exceeded login attempts"""
+        try:
+            key = f"login_attempts:{email}"
+            attempts = await redis_client.get(key)
+            
+            if attempts is None:
+                return True
+            
+            return int(attempts) < settings.MAX_LOGIN_ATTEMPTS
+            
+        except Exception as e:
+            logger.error(f"Error checking login attempts: {e}")
+            return True
+    
+    @staticmethod
+    async def increment_login_attempts(email: str):
+        """Increment login attempts counter"""
+        try:
+            key = f"login_attempts:{email}"
+            current_attempts = await redis_client.incr(key)
+            
+            # Set TTL on first attempt
+            if current_attempts == 1:
+                await redis_client.expire(key, settings.LOCKOUT_DURATION_MINUTES * 60)
+                
+        except Exception as e:
+            logger.error(f"Error incrementing login attempts: {e}")
+    
+    @staticmethod
+    async def clear_login_attempts(email: str):
+        """Clear login attempts counter"""
+        try:
+            key = f"login_attempts:{email}"
+            await redis_client.delete(key)
+            
+        except Exception as e:
+            logger.error(f"Error clearing login attempts: {e}")
+    
+    @staticmethod
+    async def store_refresh_token(user_id: str, refresh_token: str):
+        """Store refresh token in Redis"""
+        try:
+            key = f"refresh_token:{user_id}"
+            expires_seconds = settings.JWT_REFRESH_TOKEN_EXPIRE_DAYS * 24 * 3600
+            await redis_client.setex(key, expires_seconds, refresh_token)
+            
+        except Exception as e:
+            logger.error(f"Error storing refresh token: {e}")
+    
+    @staticmethod
+    async def verify_refresh_token(user_id: str, refresh_token: str) -> bool:
+        """Verify refresh token"""
+        try:
+            key = f"refresh_token:{user_id}"
+            stored_token = await redis_client.get(key)
+            
+            if stored_token is None:
+                return False
+            
+            return stored_token.decode() == refresh_token
+            
+        except Exception as e:
+            logger.error(f"Error verifying refresh token: {e}")
+            return False
+    
+    @staticmethod
+    async def revoke_refresh_token(user_id: str):
+        """Revoke refresh token"""
+        try:
+            key = f"refresh_token:{user_id}"
+            await redis_client.delete(key)
+            
+        except Exception as e:
+            logger.error(f"Error revoking refresh token: {e}")
+
+# Global security manager instance
+security_manager = SecurityManager()

services/auth/app/main.py

@@ -0,0 +1,83 @@
+"""
+Authentication Service
+Handles user authentication, registration, and token management
+"""
+
+import logging
+from datetime import timedelta
+from fastapi import FastAPI, Depends, HTTPException, status
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.security import HTTPBearer
+
+from app.core.config import settings
+from app.core.database import database_manager
+from app.api import auth, users
+from app.services.messaging import message_publisher
+from shared.monitoring.logging import setup_logging
+from shared.monitoring.metrics import MetricsCollector
+
+# Setup logging
+setup_logging("auth-service", settings.LOG_LEVEL)
+logger = logging.getLogger(__name__)
+
+# Create FastAPI app
+app = FastAPI(
+    title="Authentication Service",
+    description="User authentication and authorization service",
+    version="1.0.0"
+)
+
+# Initialize metrics collector
+metrics_collector = MetricsCollector("auth-service")
+
+# CORS middleware
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Include routers
+app.include_router(auth.router, prefix="/auth", tags=["authentication"])
+app.include_router(users.router, prefix="/users", tags=["users"])
+
+@app.on_event("startup")
+async def startup_event():
+    """Application startup"""
+    logger.info("Starting Authentication Service")
+    
+    # Create database tables
+    await database_manager.create_tables()
+    
+    # Initialize message publisher
+    await message_publisher.connect()
+    
+    # Start metrics server
+    metrics_collector.start_metrics_server(8080)
+    
+    logger.info("Authentication Service started successfully")
+
+@app.on_event("shutdown")
+async def shutdown_event():
+    """Application shutdown"""
+    logger.info("Shutting down Authentication Service")
+    
+    # Cleanup message publisher
+    await message_publisher.disconnect()
+    
+    logger.info("Authentication Service shutdown complete")
+
+@app.get("/health")
+async def health_check():
+    """Health check endpoint"""
+    return {
+        "status": "healthy",
+        "service": "auth-service",
+        "version": "1.0.0"
+    }
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=8000)

services/auth/app/schemas/auth.py

@@ -0,0 +1,108 @@
+"""
+Authentication schemas
+"""
+
+from pydantic import BaseModel, EmailStr, Field, validator
+from typing import Optional
+from datetime import datetime
+
+from app.core.config import settings
+from shared.utils.validation import validate_spanish_phone
+
+class UserRegistration(BaseModel):
+    """User registration schema"""
+    email: EmailStr
+    password: str = Field(..., min_length=settings.PASSWORD_MIN_LENGTH)
+    full_name: str = Field(..., min_length=2, max_length=100)
+    phone: Optional[str] = None
+    language: str = Field(default="es", regex="^(es|en)$")
+    
+    @validator('password')
+    def validate_password(cls, v):
+        """Validate password strength"""
+        from app.core.security import security_manager
+        if not security_manager.validate_password(v):
+            raise ValueError('Password does not meet security requirements')
+        return v
+    
+    @validator('phone')
+    def validate_phone(cls, v):
+        """Validate phone number"""
+        if v and not validate_spanish_phone(v):
+            raise ValueError('Invalid Spanish phone number')
+        return v
+
+class UserLogin(BaseModel):
+    """User login schema"""
+    email: EmailStr
+    password: str
+
+class TokenResponse(BaseModel):
+    """Token response schema"""
+    access_token: str
+    refresh_token: str
+    token_type: str = "bearer"
+    expires_in: int
+
+class RefreshTokenRequest(BaseModel):
+    """Refresh token request schema"""
+    refresh_token: str
+
+class UserResponse(BaseModel):
+    """User response schema"""
+    id: str
+    email: str
+    full_name: str
+    is_active: bool
+    is_verified: bool
+    tenant_id: Optional[str]
+    role: str
+    phone: Optional[str]
+    language: str
+    timezone: str
+    created_at: Optional[datetime]
+    last_login: Optional[datetime]
+
+class PasswordChangeRequest(BaseModel):
+    """Password change request schema"""
+    current_password: str
+    new_password: str = Field(..., min_length=settings.PASSWORD_MIN_LENGTH)
+    
+    @validator('new_password')
+    def validate_new_password(cls, v):
+        """Validate new password strength"""
+        from app.core.security import security_manager
+        if not security_manager.validate_password(v):
+            raise ValueError('New password does not meet security requirements')
+        return v
+
+class PasswordResetRequest(BaseModel):
+    """Password reset request schema"""
+    email: EmailStr
+
+class PasswordResetConfirm(BaseModel):
+    """Password reset confirmation schema"""
+    token: str
+    new_password: str = Field(..., min_length=settings.PASSWORD_MIN_LENGTH)
+    
+    @validator('new_password')
+    def validate_new_password(cls, v):
+        """Validate new password strength"""
+        from app.core.security import security_manager
+        if not security_manager.validate_password(v):
+            raise ValueError('New password does not meet security requirements')
+        return v
+
+class UserUpdate(BaseModel):
+    """User update schema"""
+    full_name: Optional[str] = Field(None, min_length=2, max_length=100)
+    phone: Optional[str] = None
+    language: Optional[str] = Field(None, regex="^(es|en)$")
+    timezone: Optional[str] = None
+    
+    @validator('phone')
+    def validate_phone(cls, v):
+        """Validate phone number"""
+        if v and not validate_spanish_phone(v):
+            raise ValueError('Invalid Spanish phone number')
+        return v

services/auth/app/services/messaging.py

@@ -0,0 +1,46 @@
+"""
+Messaging service for auth service
+"""
+
+from shared.messaging.rabbitmq import RabbitMQClient
+from app.core.config import settings
+
+# Global message publisher
+message_publisher = RabbitMQClient(settings.RABBITMQ_URL)
+
+
+# services/auth/Dockerfile
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    gcc \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy shared libraries
+COPY --from=shared /shared /app/shared
+
+# Copy application code
+COPY . .
+
+# Add shared libraries to Python path
+ENV PYTHONPATH="/app:/app/shared:$PYTHONPATH"
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8000/health || exit 1
+
+# Run application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

services/auth/requirements.txt

@@ -0,0 +1,17 @@
+fastapi==0.104.1
+uvicorn[standard]==0.24.0
+sqlalchemy==2.0.23
+asyncpg==0.29.0
+alembic==1.12.1
+pydantic==2.5.0
+pydantic-settings==2.1.0
+python-jose[cryptography]==3.3.0
+passlib[bcrypt]==1.7.4
+bcrypt==4.0.1
+python-multipart==0.0.6
+redis==5.0.1
+aio-pika==9.3.0
+email-validator==2.0.0
+prometheus-client==0.17.1
+python-json-logger==2.0.4
+pytz==2023.3

services/auth/shared/auth/decorators.py

@@ -0,0 +1,41 @@
+"""
+Authentication decorators for FastAPI
+"""
+
+from functools import wraps
+from fastapi import HTTPException, Depends
+from fastapi.security import HTTPBearer
+import httpx
+import logging
+
+logger = logging.getLogger(__name__)
+
+security = HTTPBearer()
+
+def verify_service_token(auth_service_url: str):
+    """Verify service token with auth service"""
+    
+    async def verify_token(token: str = Depends(security)):
+        try:
+            async with httpx.AsyncClient() as client:
+                response = await client.post(
+                    f"{auth_service_url}/verify",
+                    headers={"Authorization": f"Bearer {token.credentials}"}
+                )
+                
+                if response.status_code == 200:
+                    return response.json()
+                else:
+                    raise HTTPException(
+                        status_code=401,
+                        detail="Invalid authentication credentials"
+                    )
+                    
+        except httpx.RequestError as e:
+            logger.error(f"Auth service unavailable: {e}")
+            raise HTTPException(
+                status_code=503,
+                detail="Authentication service unavailable"
+            )
+    
+    return verify_token

services/auth/shared/auth/jwt_handler.py

@@ -0,0 +1,58 @@
+"""
+Shared JWT Authentication Handler
+Used across all microservices for consistent authentication
+"""
+
+import jwt
+from datetime import datetime, timedelta
+from typing import Optional, Dict, Any
+import logging
+
+logger = logging.getLogger(__name__)
+
+class JWTHandler:
+    """JWT token handling for microservices"""
+    
+    def __init__(self, secret_key: str, algorithm: str = "HS256"):
+        self.secret_key = secret_key
+        self.algorithm = algorithm
+    
+    def create_access_token(self, data: Dict[str, Any], expires_delta: Optional[timedelta] = None) -> str:
+        """Create JWT access token"""
+        to_encode = data.copy()
+        
+        if expires_delta:
+            expire = datetime.utcnow() + expires_delta
+        else:
+            expire = datetime.utcnow() + timedelta(minutes=30)
+        
+        to_encode.update({"exp": expire, "type": "access"})
+        
+        encoded_jwt = jwt.encode(to_encode, self.secret_key, algorithm=self.algorithm)
+        return encoded_jwt
+    
+    def create_refresh_token(self, data: Dict[str, Any], expires_delta: Optional[timedelta] = None) -> str:
+        """Create JWT refresh token"""
+        to_encode = data.copy()
+        
+        if expires_delta:
+            expire = datetime.utcnow() + expires_delta
+        else:
+            expire = datetime.utcnow() + timedelta(days=7)
+        
+        to_encode.update({"exp": expire, "type": "refresh"})
+        
+        encoded_jwt = jwt.encode(to_encode, self.secret_key, algorithm=self.algorithm)
+        return encoded_jwt
+    
+    def verify_token(self, token: str) -> Optional[Dict[str, Any]]:
+        """Verify and decode JWT token"""
+        try:
+            payload = jwt.decode(token, self.secret_key, algorithms=[self.algorithm])
+            return payload
+        except jwt.ExpiredSignatureError:
+            logger.warning("Token has expired")
+            return None
+        except jwt.InvalidTokenError:
+            logger.warning("Invalid token")
+            return None

services/auth/shared/database/base.py

@@ -0,0 +1,56 @@
+"""
+Base database configuration for all microservices
+"""
+
+import os
+from sqlalchemy import create_engine
+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
+from sqlalchemy.orm import sessionmaker, declarative_base
+from sqlalchemy.pool import StaticPool
+import logging
+
+logger = logging.getLogger(__name__)
+
+Base = declarative_base()
+
+class DatabaseManager:
+    """Database manager for microservices"""
+    
+    def __init__(self, database_url: str):
+        self.database_url = database_url
+        self.async_engine = create_async_engine(
+            database_url,
+            echo=False,
+            pool_pre_ping=True,
+            pool_recycle=300,
+            pool_size=20,
+            max_overflow=30
+        )
+        
+        self.async_session_local = sessionmaker(
+            self.async_engine,
+            class_=AsyncSession,
+            expire_on_commit=False
+        )
+    
+    async def get_db(self):
+        """Get database session"""
+        async with self.async_session_local() as session:
+            try:
+                yield session
+            except Exception as e:
+                logger.error(f"Database session error: {e}")
+                await session.rollback()
+                raise
+            finally:
+                await session.close()
+    
+    async def create_tables(self):
+        """Create database tables"""
+        async with self.async_engine.begin() as conn:
+            await conn.run_sync(Base.metadata.create_all)
+    
+    async def drop_tables(self):
+        """Drop database tables"""
+        async with self.async_engine.begin() as conn:
+            await conn.run_sync(Base.metadata.drop_all)

services/auth/shared/messaging/events.py

@@ -0,0 +1,73 @@
+"""
+Event definitions for microservices communication
+"""
+
+from dataclasses import dataclass
+from datetime import datetime
+from typing import Dict, Any, Optional
+import uuid
+
+@dataclass
+class BaseEvent:
+    """Base event class"""
+    event_id: str
+    event_type: str
+    service_name: str
+    timestamp: datetime
+    data: Dict[str, Any]
+    correlation_id: Optional[str] = None
+    
+    def __post_init__(self):
+        if not self.event_id:
+            self.event_id = str(uuid.uuid4())
+        if not self.timestamp:
+            self.timestamp = datetime.utcnow()
+
+# Training Events
+@dataclass
+class TrainingStartedEvent(BaseEvent):
+    event_type: str = "training.started"
+
+@dataclass
+class TrainingCompletedEvent(BaseEvent):
+    event_type: str = "training.completed"
+
+@dataclass
+class TrainingFailedEvent(BaseEvent):
+    event_type: str = "training.failed"
+
+# Forecasting Events
+@dataclass
+class ForecastGeneratedEvent(BaseEvent):
+    event_type: str = "forecast.generated"
+
+@dataclass
+class ForecastRequestedEvent(BaseEvent):
+    event_type: str = "forecast.requested"
+
+# User Events
+@dataclass
+class UserRegisteredEvent(BaseEvent):
+    event_type: str = "user.registered"
+
+@dataclass
+class UserLoginEvent(BaseEvent):
+    event_type: str = "user.login"
+
+# Tenant Events
+@dataclass
+class TenantCreatedEvent(BaseEvent):
+    event_type: str = "tenant.created"
+
+@dataclass
+class TenantUpdatedEvent(BaseEvent):
+    event_type: str = "tenant.updated"
+
+# Notification Events
+@dataclass
+class NotificationSentEvent(BaseEvent):
+    event_type: str = "notification.sent"
+
+@dataclass
+class NotificationFailedEvent(BaseEvent):
+    event_type: str = "notification.failed"

services/auth/shared/messaging/rabbitmq.py

@@ -0,0 +1,96 @@
+"""
+RabbitMQ messaging client for microservices
+"""
+
+import asyncio
+import json
+import logging
+from typing import Dict, Any, Callable
+import aio_pika
+from aio_pika import connect_robust, Message, DeliveryMode
+
+logger = logging.getLogger(__name__)
+
+class RabbitMQClient:
+    """RabbitMQ client for microservices communication"""
+    
+    def __init__(self, connection_url: str):
+        self.connection_url = connection_url
+        self.connection = None
+        self.channel = None
+    
+    async def connect(self):
+        """Connect to RabbitMQ"""
+        try:
+            self.connection = await connect_robust(self.connection_url)
+            self.channel = await self.connection.channel()
+            logger.info("Connected to RabbitMQ")
+        except Exception as e:
+            logger.error(f"Failed to connect to RabbitMQ: {e}")
+            raise
+    
+    async def disconnect(self):
+        """Disconnect from RabbitMQ"""
+        if self.connection:
+            await self.connection.close()
+            logger.info("Disconnected from RabbitMQ")
+    
+    async def publish_event(self, exchange_name: str, routing_key: str, event_data: Dict[str, Any]):
+        """Publish event to RabbitMQ"""
+        try:
+            if not self.channel:
+                await self.connect()
+            
+            # Declare exchange
+            exchange = await self.channel.declare_exchange(
+                exchange_name,
+                aio_pika.ExchangeType.TOPIC,
+                durable=True
+            )
+            
+            # Create message
+            message = Message(
+                json.dumps(event_data).encode(),
+                delivery_mode=DeliveryMode.PERSISTENT,
+                content_type="application/json"
+            )
+            
+            # Publish message
+            await exchange.publish(message, routing_key=routing_key)
+            
+            logger.info(f"Published event to {exchange_name} with routing key {routing_key}")
+            
+        except Exception as e:
+            logger.error(f"Failed to publish event: {e}")
+            raise
+    
+    async def consume_events(self, exchange_name: str, queue_name: str, routing_key: str, callback: Callable):
+        """Consume events from RabbitMQ"""
+        try:
+            if not self.channel:
+                await self.connect()
+            
+            # Declare exchange
+            exchange = await self.channel.declare_exchange(
+                exchange_name,
+                aio_pika.ExchangeType.TOPIC,
+                durable=True
+            )
+            
+            # Declare queue
+            queue = await self.channel.declare_queue(
+                queue_name,
+                durable=True
+            )
+            
+            # Bind queue to exchange
+            await queue.bind(exchange, routing_key)
+            
+            # Set up consumer
+            await queue.consume(callback)
+            
+            logger.info(f"Started consuming events from {queue_name}")
+            
+        except Exception as e:
+            logger.error(f"Failed to consume events: {e}")
+            raise

services/auth/shared/monitoring/logging.py

@@ -0,0 +1,77 @@
+"""
+Centralized logging configuration for microservices
+"""
+
+import logging
+import logging.config
+import os
+from typing import Dict, Any
+
+def setup_logging(service_name: str, log_level: str = "INFO") -> None:
+    """Set up logging configuration for a microservice"""
+    
+    config: Dict[str, Any] = {
+        "version": 1,
+        "disable_existing_loggers": False,
+        "formatters": {
+            "standard": {
+                "format": "%(asctime)s [%(levelname)s] %(name)s: %(message)s"
+            },
+            "detailed": {
+                "format": "%(asctime)s [%(levelname)s] %(name)s [%(filename)s:%(lineno)d] %(message)s"
+            },
+            "json": {
+                "()": "pythonjsonlogger.jsonlogger.JsonFormatter",
+                "format": "%(asctime)s %(name)s %(levelname)s %(message)s"
+            }
+        },
+        "handlers": {
+            "console": {
+                "class": "logging.StreamHandler",
+                "level": log_level,
+                "formatter": "standard",
+                "stream": "ext://sys.stdout"
+            },
+            "file": {
+                "class": "logging.FileHandler",
+                "level": log_level,
+                "formatter": "detailed",
+                "filename": f"/var/log/{service_name}.log",
+                "mode": "a"
+            },
+            "logstash": {
+                "class": "logstash.TCPLogstashHandler",
+                "host": os.getenv("LOGSTASH_HOST", "localhost"),
+                "port": int(os.getenv("LOGSTASH_PORT", "5000")),
+                "version": 1,
+                "message_type": "logstash",
+                "fqdn": False,
+                "tags": [service_name]
+            }
+        },
+        "loggers": {
+            "": {
+                "handlers": ["console", "file"],
+                "level": log_level,
+                "propagate": False
+            },
+            "uvicorn": {
+                "handlers": ["console"],
+                "level": log_level,
+                "propagate": False
+            },
+            "uvicorn.access": {
+                "handlers": ["console"],
+                "level": log_level,
+                "propagate": False
+            }
+        }
+    }
+    
+    # Add logstash handler if in production
+    if os.getenv("ENVIRONMENT") == "production":
+        config["loggers"][""]["handlers"].append("logstash")
+    
+    logging.config.dictConfig(config)
+    logger = logging.getLogger(__name__)
+    logger.info(f"Logging configured for {service_name}")

services/auth/shared/monitoring/metrics.py

@@ -0,0 +1,112 @@
+"""
+Metrics collection for microservices
+"""
+
+import time
+import logging
+from typing import Dict, Any
+from prometheus_client import Counter, Histogram, Gauge, start_http_server
+from functools import wraps
+
+logger = logging.getLogger(__name__)
+
+# Prometheus metrics
+REQUEST_COUNT = Counter(
+    'http_requests_total',
+    'Total HTTP requests',
+    ['method', 'endpoint', 'status_code', 'service']
+)
+
+REQUEST_DURATION = Histogram(
+    'http_request_duration_seconds',
+    'HTTP request duration in seconds',
+    ['method', 'endpoint', 'service']
+)
+
+ACTIVE_CONNECTIONS = Gauge(
+    'active_connections',
+    'Active database connections',
+    ['service']
+)
+
+TRAINING_JOBS = Counter(
+    'training_jobs_total',
+    'Total training jobs',
+    ['status', 'service']
+)
+
+FORECASTS_GENERATED = Counter(
+    'forecasts_generated_total',
+    'Total forecasts generated',
+    ['service']
+)
+
+class MetricsCollector:
+    """Metrics collector for microservices"""
+    
+    def __init__(self, service_name: str):
+        self.service_name = service_name
+        self.start_time = time.time()
+    
+    def start_metrics_server(self, port: int = 8080):
+        """Start Prometheus metrics server"""
+        try:
+            start_http_server(port)
+            logger.info(f"Metrics server started on port {port}")
+        except Exception as e:
+            logger.error(f"Failed to start metrics server: {e}")
+    
+    def record_request(self, method: str, endpoint: str, status_code: int, duration: float):
+        """Record HTTP request metrics"""
+        REQUEST_COUNT.labels(
+            method=method,
+            endpoint=endpoint,
+            status_code=status_code,
+            service=self.service_name
+        ).inc()
+        
+        REQUEST_DURATION.labels(
+            method=method,
+            endpoint=endpoint,
+            service=self.service_name
+        ).observe(duration)
+    
+    def record_training_job(self, status: str):
+        """Record training job metrics"""
+        TRAINING_JOBS.labels(
+            status=status,
+            service=self.service_name
+        ).inc()
+    
+    def record_forecast_generated(self):
+        """Record forecast generation metrics"""
+        FORECASTS_GENERATED.labels(
+            service=self.service_name
+        ).inc()
+    
+    def set_active_connections(self, count: int):
+        """Set active database connections"""
+        ACTIVE_CONNECTIONS.labels(
+            service=self.service_name
+        ).set(count)
+
+def metrics_middleware(metrics_collector: MetricsCollector):
+    """Middleware to collect metrics"""
+    
+    def middleware(request, call_next):
+        start_time = time.time()
+        
+        response = call_next(request)
+        
+        duration = time.time() - start_time
+        
+        metrics_collector.record_request(
+            method=request.method,
+            endpoint=request.url.path,
+            status_code=response.status_code,
+            duration=duration
+        )
+        
+        return response
+    
+    return middleware

services/auth/shared/utils/datetime_utils.py

@@ -0,0 +1,71 @@
+"""
+DateTime utilities for microservices
+"""
+
+from datetime import datetime, timezone, timedelta
+from typing import Optional
+import pytz
+
+def utc_now() -> datetime:
+    """Get current UTC datetime"""
+    return datetime.now(timezone.utc)
+
+def madrid_now() -> datetime:
+    """Get current Madrid datetime"""
+    madrid_tz = pytz.timezone('Europe/Madrid')
+    return datetime.now(madrid_tz)
+
+def to_utc(dt: datetime) -> datetime:
+    """Convert datetime to UTC"""
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(timezone.utc)
+
+def to_madrid(dt: datetime) -> datetime:
+    """Convert datetime to Madrid timezone"""
+    madrid_tz = pytz.timezone('Europe/Madrid')
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(madrid_tz)
+
+def format_datetime(dt: datetime, format_str: str = "%Y-%m-%d %H:%M:%S") -> str:
+    """Format datetime as string"""
+    return dt.strftime(format_str)
+
+def parse_datetime(dt_str: str, format_str: str = "%Y-%m-%d %H:%M:%S") -> datetime:
+    """Parse datetime from string"""
+    return datetime.strptime(dt_str, format_str)
+
+def is_business_hours(dt: Optional[datetime] = None) -> bool:
+    """Check if datetime is during business hours (9 AM - 6 PM Madrid time)"""
+    if dt is None:
+        dt = madrid_now()
+    
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    
+    madrid_dt = to_madrid(dt)
+    
+    # Check if it's a weekday (Monday=0, Sunday=6)
+    if madrid_dt.weekday() >= 5:  # Weekend
+        return False
+    
+    # Check if it's business hours
+    return 9 <= madrid_dt.hour < 18
+
+def next_business_day(dt: Optional[datetime] = None) -> datetime:
+    """Get next business day"""
+    if dt is None:
+        dt = madrid_now()
+    
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    
+    madrid_dt = to_madrid(dt)
+    
+    # Add days until we reach a weekday
+    while madrid_dt.weekday() >= 5:  # Weekend
+        madrid_dt += timedelta(days=1)
+    
+    # Set to 9 AM
+    return madrid_dt.replace(hour=9, minute=0, second=0, microsecond=0)

services/auth/shared/utils/validation.py

@@ -0,0 +1,67 @@
+"""
+Validation utilities for microservices
+"""
+
+import re
+from typing import Any, Optional
+from email_validator import validate_email, EmailNotValidError
+
+def validate_spanish_phone(phone: str) -> bool:
+    """Validate Spanish phone number"""
+    # Spanish phone pattern: +34 followed by 9 digits
+    pattern = r'^(\+34|0034|34)?[6-9]\d{8}$'
+    return bool(re.match(pattern, phone.replace(' ', '').replace('-', '')))
+
+def validate_email_address(email: str) -> bool:
+    """Validate email address"""
+    try:
+        validate_email(email)
+        return True
+    except EmailNotValidError:
+        return False
+
+def validate_tenant_name(name: str) -> bool:
+    """Validate tenant name"""
+    # Must be 2-50 characters, letters, numbers, spaces, hyphens, apostrophes
+    pattern = r"^[a-zA-ZÀ-ÿ0-9\s\-']{2,50}$"
+    return bool(re.match(pattern, name))
+
+def validate_address(address: str) -> bool:
+    """Validate address"""
+    # Must be 5-200 characters
+    return 5 <= len(address.strip()) <= 200
+
+def validate_coordinates(latitude: float, longitude: float) -> bool:
+    """Validate Madrid coordinates"""
+    # Madrid is roughly between these coordinates
+    madrid_bounds = {
+        'lat_min': 40.3,
+        'lat_max': 40.6,
+        'lon_min': -3.8,
+        'lon_max': -3.5
+    }
+    
+    return (
+        madrid_bounds['lat_min'] <= latitude <= madrid_bounds['lat_max'] and
+        madrid_bounds['lon_min'] <= longitude <= madrid_bounds['lon_max']
+    )
+
+def validate_product_name(name: str) -> bool:
+    """Validate product name"""
+    # Must be 1-50 characters, letters, numbers, spaces
+    pattern = r"^[a-zA-ZÀ-ÿ0-9\s]{1,50}$"
+    return bool(re.match(pattern, name))
+
+def validate_positive_number(value: Any) -> bool:
+    """Validate positive number"""
+    try:
+        return float(value) > 0
+    except (ValueError, TypeError):
+        return False
+
+def validate_non_negative_number(value: Any) -> bool:
+    """Validate non-negative number"""
+    try:
+        return float(value) >= 0
+    except (ValueError, TypeError):
+        return False

services/data/Dockerfile

@@ -0,0 +1,31 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    gcc \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Add shared libraries to Python path
+ENV PYTHONPATH="/app:/app/shared:$PYTHONPATH"
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8000/health || exit 1
+
+# Run application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

services/data/app/core/config.py

@@ -0,0 +1,32 @@
+"""
+uLudata service configuration
+"""
+
+import os
+from pydantic import BaseSettings
+
+class Settings(BaseSettings):
+    """Application settings"""
+    
+    # Basic settings
+    APP_NAME: str = "uLudata Service"
+    VERSION: str = "1.0.0"
+    DEBUG: bool = os.getenv("DEBUG", "False").lower() == "true"
+    LOG_LEVEL: str = os.getenv("LOG_LEVEL", "INFO")
+    
+    # Database settings
+    DATABASE_URL: str = os.getenv("DATABASE_URL", "postgresql+asyncpg://data_user:data_pass123@data-db:5432/data_db")
+    
+    # Redis settings
+    REDIS_URL: str = os.getenv("REDIS_URL", "redis://redis:6379/0")
+    
+    # RabbitMQ settings
+    RABBITMQ_URL: str = os.getenv("RABBITMQ_URL", "amqp://bakery:forecast123@rabbitmq:5672/")
+    
+    # Service URLs
+    AUTH_SERVICE_URL: str = os.getenv("AUTH_SERVICE_URL", "http://auth-service:8000")
+    
+    class Config:
+        env_file = ".env"
+
+settings = Settings()

services/data/app/core/database.py

@@ -0,0 +1,12 @@
+"""
+Database configuration for data service
+"""
+
+from shared.database.base import DatabaseManager
+from app.core.config import settings
+
+# Initialize database manager
+database_manager = DatabaseManager(settings.DATABASE_URL)
+
+# Alias for convenience
+get_db = database_manager.get_db

services/data/app/main.py

@@ -0,0 +1,61 @@
+"""
+uLudata Service
+"""
+
+import logging
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.core.config import settings
+from app.core.database import database_manager
+from shared.monitoring.logging import setup_logging
+from shared.monitoring.metrics import MetricsCollector
+
+# Setup logging
+setup_logging("data-service", "INFO")
+logger = logging.getLogger(__name__)
+
+# Create FastAPI app
+app = FastAPI(
+    title="uLudata Service",
+    description="uLudata service for bakery forecasting",
+    version="1.0.0"
+)
+
+# Initialize metrics collector
+metrics_collector = MetricsCollector("data-service")
+
+# CORS middleware
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+@app.on_event("startup")
+async def startup_event():
+    """Application startup"""
+    logger.info("Starting uLudata Service")
+    
+    # Create database tables
+    await database_manager.create_tables()
+    
+    # Start metrics server
+    metrics_collector.start_metrics_server(8080)
+    
+    logger.info("uLudata Service started successfully")
+
+@app.get("/health")
+async def health_check():
+    """Health check endpoint"""
+    return {
+        "status": "healthy",
+        "service": "data-service",
+        "version": "1.0.0"
+    }
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=8000)

services/data/requirements.txt

@@ -0,0 +1,13 @@
+fastapi==0.104.1
+uvicorn[standard]==0.24.0
+sqlalchemy==2.0.23
+asyncpg==0.29.0
+alembic==1.12.1
+pydantic==2.5.0
+pydantic-settings==2.1.0
+httpx==0.25.2
+redis==5.0.1
+aio-pika==9.3.0
+prometheus-client==0.17.1
+python-json-logger==2.0.4
+pytz==2023.3

services/data/shared/auth/decorators.py

@@ -0,0 +1,41 @@
+"""
+Authentication decorators for FastAPI
+"""
+
+from functools import wraps
+from fastapi import HTTPException, Depends
+from fastapi.security import HTTPBearer
+import httpx
+import logging
+
+logger = logging.getLogger(__name__)
+
+security = HTTPBearer()
+
+def verify_service_token(auth_service_url: str):
+    """Verify service token with auth service"""
+    
+    async def verify_token(token: str = Depends(security)):
+        try:
+            async with httpx.AsyncClient() as client:
+                response = await client.post(
+                    f"{auth_service_url}/verify",
+                    headers={"Authorization": f"Bearer {token.credentials}"}
+                )
+                
+                if response.status_code == 200:
+                    return response.json()
+                else:
+                    raise HTTPException(
+                        status_code=401,
+                        detail="Invalid authentication credentials"
+                    )
+                    
+        except httpx.RequestError as e:
+            logger.error(f"Auth service unavailable: {e}")
+            raise HTTPException(
+                status_code=503,
+                detail="Authentication service unavailable"
+            )
+    
+    return verify_token

services/data/shared/auth/jwt_handler.py

@@ -0,0 +1,58 @@
+"""
+Shared JWT Authentication Handler
+Used across all microservices for consistent authentication
+"""
+
+import jwt
+from datetime import datetime, timedelta
+from typing import Optional, Dict, Any
+import logging
+
+logger = logging.getLogger(__name__)
+
+class JWTHandler:
+    """JWT token handling for microservices"""
+    
+    def __init__(self, secret_key: str, algorithm: str = "HS256"):
+        self.secret_key = secret_key
+        self.algorithm = algorithm
+    
+    def create_access_token(self, data: Dict[str, Any], expires_delta: Optional[timedelta] = None) -> str:
+        """Create JWT access token"""
+        to_encode = data.copy()
+        
+        if expires_delta:
+            expire = datetime.utcnow() + expires_delta
+        else:
+            expire = datetime.utcnow() + timedelta(minutes=30)
+        
+        to_encode.update({"exp": expire, "type": "access"})
+        
+        encoded_jwt = jwt.encode(to_encode, self.secret_key, algorithm=self.algorithm)
+        return encoded_jwt
+    
+    def create_refresh_token(self, data: Dict[str, Any], expires_delta: Optional[timedelta] = None) -> str:
+        """Create JWT refresh token"""
+        to_encode = data.copy()
+        
+        if expires_delta:
+            expire = datetime.utcnow() + expires_delta
+        else:
+            expire = datetime.utcnow() + timedelta(days=7)
+        
+        to_encode.update({"exp": expire, "type": "refresh"})
+        
+        encoded_jwt = jwt.encode(to_encode, self.secret_key, algorithm=self.algorithm)
+        return encoded_jwt
+    
+    def verify_token(self, token: str) -> Optional[Dict[str, Any]]:
+        """Verify and decode JWT token"""
+        try:
+            payload = jwt.decode(token, self.secret_key, algorithms=[self.algorithm])
+            return payload
+        except jwt.ExpiredSignatureError:
+            logger.warning("Token has expired")
+            return None
+        except jwt.InvalidTokenError:
+            logger.warning("Invalid token")
+            return None

services/data/shared/database/base.py

@@ -0,0 +1,56 @@
+"""
+Base database configuration for all microservices
+"""
+
+import os
+from sqlalchemy import create_engine
+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
+from sqlalchemy.orm import sessionmaker, declarative_base
+from sqlalchemy.pool import StaticPool
+import logging
+
+logger = logging.getLogger(__name__)
+
+Base = declarative_base()
+
+class DatabaseManager:
+    """Database manager for microservices"""
+    
+    def __init__(self, database_url: str):
+        self.database_url = database_url
+        self.async_engine = create_async_engine(
+            database_url,
+            echo=False,
+            pool_pre_ping=True,
+            pool_recycle=300,
+            pool_size=20,
+            max_overflow=30
+        )
+        
+        self.async_session_local = sessionmaker(
+            self.async_engine,
+            class_=AsyncSession,
+            expire_on_commit=False
+        )
+    
+    async def get_db(self):
+        """Get database session"""
+        async with self.async_session_local() as session:
+            try:
+                yield session
+            except Exception as e:
+                logger.error(f"Database session error: {e}")
+                await session.rollback()
+                raise
+            finally:
+                await session.close()
+    
+    async def create_tables(self):
+        """Create database tables"""
+        async with self.async_engine.begin() as conn:
+            await conn.run_sync(Base.metadata.create_all)
+    
+    async def drop_tables(self):
+        """Drop database tables"""
+        async with self.async_engine.begin() as conn:
+            await conn.run_sync(Base.metadata.drop_all)

services/data/shared/messaging/events.py

@@ -0,0 +1,73 @@
+"""
+Event definitions for microservices communication
+"""
+
+from dataclasses import dataclass
+from datetime import datetime
+from typing import Dict, Any, Optional
+import uuid
+
+@dataclass
+class BaseEvent:
+    """Base event class"""
+    event_id: str
+    event_type: str
+    service_name: str
+    timestamp: datetime
+    data: Dict[str, Any]
+    correlation_id: Optional[str] = None
+    
+    def __post_init__(self):
+        if not self.event_id:
+            self.event_id = str(uuid.uuid4())
+        if not self.timestamp:
+            self.timestamp = datetime.utcnow()
+
+# Training Events
+@dataclass
+class TrainingStartedEvent(BaseEvent):
+    event_type: str = "training.started"
+
+@dataclass
+class TrainingCompletedEvent(BaseEvent):
+    event_type: str = "training.completed"
+
+@dataclass
+class TrainingFailedEvent(BaseEvent):
+    event_type: str = "training.failed"
+
+# Forecasting Events
+@dataclass
+class ForecastGeneratedEvent(BaseEvent):
+    event_type: str = "forecast.generated"
+
+@dataclass
+class ForecastRequestedEvent(BaseEvent):
+    event_type: str = "forecast.requested"
+
+# User Events
+@dataclass
+class UserRegisteredEvent(BaseEvent):
+    event_type: str = "user.registered"
+
+@dataclass
+class UserLoginEvent(BaseEvent):
+    event_type: str = "user.login"
+
+# Tenant Events
+@dataclass
+class TenantCreatedEvent(BaseEvent):
+    event_type: str = "tenant.created"
+
+@dataclass
+class TenantUpdatedEvent(BaseEvent):
+    event_type: str = "tenant.updated"
+
+# Notification Events
+@dataclass
+class NotificationSentEvent(BaseEvent):
+    event_type: str = "notification.sent"
+
+@dataclass
+class NotificationFailedEvent(BaseEvent):
+    event_type: str = "notification.failed"

services/data/shared/messaging/rabbitmq.py

@@ -0,0 +1,96 @@
+"""
+RabbitMQ messaging client for microservices
+"""
+
+import asyncio
+import json
+import logging
+from typing import Dict, Any, Callable
+import aio_pika
+from aio_pika import connect_robust, Message, DeliveryMode
+
+logger = logging.getLogger(__name__)
+
+class RabbitMQClient:
+    """RabbitMQ client for microservices communication"""
+    
+    def __init__(self, connection_url: str):
+        self.connection_url = connection_url
+        self.connection = None
+        self.channel = None
+    
+    async def connect(self):
+        """Connect to RabbitMQ"""
+        try:
+            self.connection = await connect_robust(self.connection_url)
+            self.channel = await self.connection.channel()
+            logger.info("Connected to RabbitMQ")
+        except Exception as e:
+            logger.error(f"Failed to connect to RabbitMQ: {e}")
+            raise
+    
+    async def disconnect(self):
+        """Disconnect from RabbitMQ"""
+        if self.connection:
+            await self.connection.close()
+            logger.info("Disconnected from RabbitMQ")
+    
+    async def publish_event(self, exchange_name: str, routing_key: str, event_data: Dict[str, Any]):
+        """Publish event to RabbitMQ"""
+        try:
+            if not self.channel:
+                await self.connect()
+            
+            # Declare exchange
+            exchange = await self.channel.declare_exchange(
+                exchange_name,
+                aio_pika.ExchangeType.TOPIC,
+                durable=True
+            )
+            
+            # Create message
+            message = Message(
+                json.dumps(event_data).encode(),
+                delivery_mode=DeliveryMode.PERSISTENT,
+                content_type="application/json"
+            )
+            
+            # Publish message
+            await exchange.publish(message, routing_key=routing_key)
+            
+            logger.info(f"Published event to {exchange_name} with routing key {routing_key}")
+            
+        except Exception as e:
+            logger.error(f"Failed to publish event: {e}")
+            raise
+    
+    async def consume_events(self, exchange_name: str, queue_name: str, routing_key: str, callback: Callable):
+        """Consume events from RabbitMQ"""
+        try:
+            if not self.channel:
+                await self.connect()
+            
+            # Declare exchange
+            exchange = await self.channel.declare_exchange(
+                exchange_name,
+                aio_pika.ExchangeType.TOPIC,
+                durable=True
+            )
+            
+            # Declare queue
+            queue = await self.channel.declare_queue(
+                queue_name,
+                durable=True
+            )
+            
+            # Bind queue to exchange
+            await queue.bind(exchange, routing_key)
+            
+            # Set up consumer
+            await queue.consume(callback)
+            
+            logger.info(f"Started consuming events from {queue_name}")
+            
+        except Exception as e:
+            logger.error(f"Failed to consume events: {e}")
+            raise

services/data/shared/monitoring/logging.py

@@ -0,0 +1,77 @@
+"""
+Centralized logging configuration for microservices
+"""
+
+import logging
+import logging.config
+import os
+from typing import Dict, Any
+
+def setup_logging(service_name: str, log_level: str = "INFO") -> None:
+    """Set up logging configuration for a microservice"""
+    
+    config: Dict[str, Any] = {
+        "version": 1,
+        "disable_existing_loggers": False,
+        "formatters": {
+            "standard": {
+                "format": "%(asctime)s [%(levelname)s] %(name)s: %(message)s"
+            },
+            "detailed": {
+                "format": "%(asctime)s [%(levelname)s] %(name)s [%(filename)s:%(lineno)d] %(message)s"
+            },
+            "json": {
+                "()": "pythonjsonlogger.jsonlogger.JsonFormatter",
+                "format": "%(asctime)s %(name)s %(levelname)s %(message)s"
+            }
+        },
+        "handlers": {
+            "console": {
+                "class": "logging.StreamHandler",
+                "level": log_level,
+                "formatter": "standard",
+                "stream": "ext://sys.stdout"
+            },
+            "file": {
+                "class": "logging.FileHandler",
+                "level": log_level,
+                "formatter": "detailed",
+                "filename": f"/var/log/{service_name}.log",
+                "mode": "a"
+            },
+            "logstash": {
+                "class": "logstash.TCPLogstashHandler",
+                "host": os.getenv("LOGSTASH_HOST", "localhost"),
+                "port": int(os.getenv("LOGSTASH_PORT", "5000")),
+                "version": 1,
+                "message_type": "logstash",
+                "fqdn": False,
+                "tags": [service_name]
+            }
+        },
+        "loggers": {
+            "": {
+                "handlers": ["console", "file"],
+                "level": log_level,
+                "propagate": False
+            },
+            "uvicorn": {
+                "handlers": ["console"],
+                "level": log_level,
+                "propagate": False
+            },
+            "uvicorn.access": {
+                "handlers": ["console"],
+                "level": log_level,
+                "propagate": False
+            }
+        }
+    }
+    
+    # Add logstash handler if in production
+    if os.getenv("ENVIRONMENT") == "production":
+        config["loggers"][""]["handlers"].append("logstash")
+    
+    logging.config.dictConfig(config)
+    logger = logging.getLogger(__name__)
+    logger.info(f"Logging configured for {service_name}")

services/data/shared/monitoring/metrics.py

@@ -0,0 +1,112 @@
+"""
+Metrics collection for microservices
+"""
+
+import time
+import logging
+from typing import Dict, Any
+from prometheus_client import Counter, Histogram, Gauge, start_http_server
+from functools import wraps
+
+logger = logging.getLogger(__name__)
+
+# Prometheus metrics
+REQUEST_COUNT = Counter(
+    'http_requests_total',
+    'Total HTTP requests',
+    ['method', 'endpoint', 'status_code', 'service']
+)
+
+REQUEST_DURATION = Histogram(
+    'http_request_duration_seconds',
+    'HTTP request duration in seconds',
+    ['method', 'endpoint', 'service']
+)
+
+ACTIVE_CONNECTIONS = Gauge(
+    'active_connections',
+    'Active database connections',
+    ['service']
+)
+
+TRAINING_JOBS = Counter(
+    'training_jobs_total',
+    'Total training jobs',
+    ['status', 'service']
+)
+
+FORECASTS_GENERATED = Counter(
+    'forecasts_generated_total',
+    'Total forecasts generated',
+    ['service']
+)
+
+class MetricsCollector:
+    """Metrics collector for microservices"""
+    
+    def __init__(self, service_name: str):
+        self.service_name = service_name
+        self.start_time = time.time()
+    
+    def start_metrics_server(self, port: int = 8080):
+        """Start Prometheus metrics server"""
+        try:
+            start_http_server(port)
+            logger.info(f"Metrics server started on port {port}")
+        except Exception as e:
+            logger.error(f"Failed to start metrics server: {e}")
+    
+    def record_request(self, method: str, endpoint: str, status_code: int, duration: float):
+        """Record HTTP request metrics"""
+        REQUEST_COUNT.labels(
+            method=method,
+            endpoint=endpoint,
+            status_code=status_code,
+            service=self.service_name
+        ).inc()
+        
+        REQUEST_DURATION.labels(
+            method=method,
+            endpoint=endpoint,
+            service=self.service_name
+        ).observe(duration)
+    
+    def record_training_job(self, status: str):
+        """Record training job metrics"""
+        TRAINING_JOBS.labels(
+            status=status,
+            service=self.service_name
+        ).inc()
+    
+    def record_forecast_generated(self):
+        """Record forecast generation metrics"""
+        FORECASTS_GENERATED.labels(
+            service=self.service_name
+        ).inc()
+    
+    def set_active_connections(self, count: int):
+        """Set active database connections"""
+        ACTIVE_CONNECTIONS.labels(
+            service=self.service_name
+        ).set(count)
+
+def metrics_middleware(metrics_collector: MetricsCollector):
+    """Middleware to collect metrics"""
+    
+    def middleware(request, call_next):
+        start_time = time.time()
+        
+        response = call_next(request)
+        
+        duration = time.time() - start_time
+        
+        metrics_collector.record_request(
+            method=request.method,
+            endpoint=request.url.path,
+            status_code=response.status_code,
+            duration=duration
+        )
+        
+        return response
+    
+    return middleware

services/data/shared/utils/datetime_utils.py

@@ -0,0 +1,71 @@
+"""
+DateTime utilities for microservices
+"""
+
+from datetime import datetime, timezone, timedelta
+from typing import Optional
+import pytz
+
+def utc_now() -> datetime:
+    """Get current UTC datetime"""
+    return datetime.now(timezone.utc)
+
+def madrid_now() -> datetime:
+    """Get current Madrid datetime"""
+    madrid_tz = pytz.timezone('Europe/Madrid')
+    return datetime.now(madrid_tz)
+
+def to_utc(dt: datetime) -> datetime:
+    """Convert datetime to UTC"""
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(timezone.utc)
+
+def to_madrid(dt: datetime) -> datetime:
+    """Convert datetime to Madrid timezone"""
+    madrid_tz = pytz.timezone('Europe/Madrid')
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(madrid_tz)
+
+def format_datetime(dt: datetime, format_str: str = "%Y-%m-%d %H:%M:%S") -> str:
+    """Format datetime as string"""
+    return dt.strftime(format_str)
+
+def parse_datetime(dt_str: str, format_str: str = "%Y-%m-%d %H:%M:%S") -> datetime:
+    """Parse datetime from string"""
+    return datetime.strptime(dt_str, format_str)
+
+def is_business_hours(dt: Optional[datetime] = None) -> bool:
+    """Check if datetime is during business hours (9 AM - 6 PM Madrid time)"""
+    if dt is None:
+        dt = madrid_now()
+    
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    
+    madrid_dt = to_madrid(dt)
+    
+    # Check if it's a weekday (Monday=0, Sunday=6)
+    if madrid_dt.weekday() >= 5:  # Weekend
+        return False
+    
+    # Check if it's business hours
+    return 9 <= madrid_dt.hour < 18
+
+def next_business_day(dt: Optional[datetime] = None) -> datetime:
+    """Get next business day"""
+    if dt is None:
+        dt = madrid_now()
+    
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    
+    madrid_dt = to_madrid(dt)
+    
+    # Add days until we reach a weekday
+    while madrid_dt.weekday() >= 5:  # Weekend
+        madrid_dt += timedelta(days=1)
+    
+    # Set to 9 AM
+    return madrid_dt.replace(hour=9, minute=0, second=0, microsecond=0)

services/data/shared/utils/validation.py

@@ -0,0 +1,67 @@
+"""
+Validation utilities for microservices
+"""
+
+import re
+from typing import Any, Optional
+from email_validator import validate_email, EmailNotValidError
+
+def validate_spanish_phone(phone: str) -> bool:
+    """Validate Spanish phone number"""
+    # Spanish phone pattern: +34 followed by 9 digits
+    pattern = r'^(\+34|0034|34)?[6-9]\d{8}$'
+    return bool(re.match(pattern, phone.replace(' ', '').replace('-', '')))
+
+def validate_email_address(email: str) -> bool:
+    """Validate email address"""
+    try:
+        validate_email(email)
+        return True
+    except EmailNotValidError:
+        return False
+
+def validate_tenant_name(name: str) -> bool:
+    """Validate tenant name"""
+    # Must be 2-50 characters, letters, numbers, spaces, hyphens, apostrophes
+    pattern = r"^[a-zA-ZÀ-ÿ0-9\s\-']{2,50}$"
+    return bool(re.match(pattern, name))
+
+def validate_address(address: str) -> bool:
+    """Validate address"""
+    # Must be 5-200 characters
+    return 5 <= len(address.strip()) <= 200
+
+def validate_coordinates(latitude: float, longitude: float) -> bool:
+    """Validate Madrid coordinates"""
+    # Madrid is roughly between these coordinates
+    madrid_bounds = {
+        'lat_min': 40.3,
+        'lat_max': 40.6,
+        'lon_min': -3.8,
+        'lon_max': -3.5
+    }
+    
+    return (
+        madrid_bounds['lat_min'] <= latitude <= madrid_bounds['lat_max'] and
+        madrid_bounds['lon_min'] <= longitude <= madrid_bounds['lon_max']
+    )
+
+def validate_product_name(name: str) -> bool:
+    """Validate product name"""
+    # Must be 1-50 characters, letters, numbers, spaces
+    pattern = r"^[a-zA-ZÀ-ÿ0-9\s]{1,50}$"
+    return bool(re.match(pattern, name))
+
+def validate_positive_number(value: Any) -> bool:
+    """Validate positive number"""
+    try:
+        return float(value) > 0
+    except (ValueError, TypeError):
+        return False
+
+def validate_non_negative_number(value: Any) -> bool:
+    """Validate non-negative number"""
+    try:
+        return float(value) >= 0
+    except (ValueError, TypeError):
+        return False

services/forecasting/Dockerfile

@@ -0,0 +1,31 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    gcc \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Add shared libraries to Python path
+ENV PYTHONPATH="/app:/app/shared:$PYTHONPATH"
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8000/health || exit 1
+
+# Run application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

services/forecasting/app/core/config.py

@@ -0,0 +1,32 @@
+"""
+uLuforecasting service configuration
+"""
+
+import os
+from pydantic import BaseSettings
+
+class Settings(BaseSettings):
+    """Application settings"""
+    
+    # Basic settings
+    APP_NAME: str = "uLuforecasting Service"
+    VERSION: str = "1.0.0"
+    DEBUG: bool = os.getenv("DEBUG", "False").lower() == "true"
+    LOG_LEVEL: str = os.getenv("LOG_LEVEL", "INFO")
+    
+    # Database settings
+    DATABASE_URL: str = os.getenv("DATABASE_URL", "postgresql+asyncpg://forecasting_user:forecasting_pass123@forecasting-db:5432/forecasting_db")
+    
+    # Redis settings
+    REDIS_URL: str = os.getenv("REDIS_URL", "redis://redis:6379/0")
+    
+    # RabbitMQ settings
+    RABBITMQ_URL: str = os.getenv("RABBITMQ_URL", "amqp://bakery:forecast123@rabbitmq:5672/")
+    
+    # Service URLs
+    AUTH_SERVICE_URL: str = os.getenv("AUTH_SERVICE_URL", "http://auth-service:8000")
+    
+    class Config:
+        env_file = ".env"
+
+settings = Settings()

services/forecasting/app/core/database.py

@@ -0,0 +1,12 @@
+"""
+Database configuration for forecasting service
+"""
+
+from shared.database.base import DatabaseManager
+from app.core.config import settings
+
+# Initialize database manager
+database_manager = DatabaseManager(settings.DATABASE_URL)
+
+# Alias for convenience
+get_db = database_manager.get_db

services/forecasting/app/main.py

@@ -0,0 +1,61 @@
+"""
+uLuforecasting Service
+"""
+
+import logging
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.core.config import settings
+from app.core.database import database_manager
+from shared.monitoring.logging import setup_logging
+from shared.monitoring.metrics import MetricsCollector
+
+# Setup logging
+setup_logging("forecasting-service", "INFO")
+logger = logging.getLogger(__name__)
+
+# Create FastAPI app
+app = FastAPI(
+    title="uLuforecasting Service",
+    description="uLuforecasting service for bakery forecasting",
+    version="1.0.0"
+)
+
+# Initialize metrics collector
+metrics_collector = MetricsCollector("forecasting-service")
+
+# CORS middleware
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+@app.on_event("startup")
+async def startup_event():
+    """Application startup"""
+    logger.info("Starting uLuforecasting Service")
+    
+    # Create database tables
+    await database_manager.create_tables()
+    
+    # Start metrics server
+    metrics_collector.start_metrics_server(8080)
+    
+    logger.info("uLuforecasting Service started successfully")
+
+@app.get("/health")
+async def health_check():
+    """Health check endpoint"""
+    return {
+        "status": "healthy",
+        "service": "forecasting-service",
+        "version": "1.0.0"
+    }
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=8000)

services/forecasting/requirements.txt

@@ -0,0 +1,13 @@
+fastapi==0.104.1
+uvicorn[standard]==0.24.0
+sqlalchemy==2.0.23
+asyncpg==0.29.0
+alembic==1.12.1
+pydantic==2.5.0
+pydantic-settings==2.1.0
+httpx==0.25.2
+redis==5.0.1
+aio-pika==9.3.0
+prometheus-client==0.17.1
+python-json-logger==2.0.4
+pytz==2023.3

services/forecasting/shared/auth/decorators.py

@@ -0,0 +1,41 @@
+"""
+Authentication decorators for FastAPI
+"""
+
+from functools import wraps
+from fastapi import HTTPException, Depends
+from fastapi.security import HTTPBearer
+import httpx
+import logging
+
+logger = logging.getLogger(__name__)
+
+security = HTTPBearer()
+
+def verify_service_token(auth_service_url: str):
+    """Verify service token with auth service"""
+    
+    async def verify_token(token: str = Depends(security)):
+        try:
+            async with httpx.AsyncClient() as client:
+                response = await client.post(
+                    f"{auth_service_url}/verify",
+                    headers={"Authorization": f"Bearer {token.credentials}"}
+                )
+                
+                if response.status_code == 200:
+                    return response.json()
+                else:
+                    raise HTTPException(
+                        status_code=401,
+                        detail="Invalid authentication credentials"
+                    )
+                    
+        except httpx.RequestError as e:
+            logger.error(f"Auth service unavailable: {e}")
+            raise HTTPException(
+                status_code=503,
+                detail="Authentication service unavailable"
+            )
+    
+    return verify_token

services/forecasting/shared/auth/jwt_handler.py

@@ -0,0 +1,58 @@
+"""
+Shared JWT Authentication Handler
+Used across all microservices for consistent authentication
+"""
+
+import jwt
+from datetime import datetime, timedelta
+from typing import Optional, Dict, Any
+import logging
+
+logger = logging.getLogger(__name__)
+
+class JWTHandler:
+    """JWT token handling for microservices"""
+    
+    def __init__(self, secret_key: str, algorithm: str = "HS256"):
+        self.secret_key = secret_key
+        self.algorithm = algorithm
+    
+    def create_access_token(self, data: Dict[str, Any], expires_delta: Optional[timedelta] = None) -> str:
+        """Create JWT access token"""
+        to_encode = data.copy()
+        
+        if expires_delta:
+            expire = datetime.utcnow() + expires_delta
+        else:
+            expire = datetime.utcnow() + timedelta(minutes=30)
+        
+        to_encode.update({"exp": expire, "type": "access"})
+        
+        encoded_jwt = jwt.encode(to_encode, self.secret_key, algorithm=self.algorithm)
+        return encoded_jwt
+    
+    def create_refresh_token(self, data: Dict[str, Any], expires_delta: Optional[timedelta] = None) -> str:
+        """Create JWT refresh token"""
+        to_encode = data.copy()
+        
+        if expires_delta:
+            expire = datetime.utcnow() + expires_delta
+        else:
+            expire = datetime.utcnow() + timedelta(days=7)
+        
+        to_encode.update({"exp": expire, "type": "refresh"})
+        
+        encoded_jwt = jwt.encode(to_encode, self.secret_key, algorithm=self.algorithm)
+        return encoded_jwt
+    
+    def verify_token(self, token: str) -> Optional[Dict[str, Any]]:
+        """Verify and decode JWT token"""
+        try:
+            payload = jwt.decode(token, self.secret_key, algorithms=[self.algorithm])
+            return payload
+        except jwt.ExpiredSignatureError:
+            logger.warning("Token has expired")
+            return None
+        except jwt.InvalidTokenError:
+            logger.warning("Invalid token")
+            return None

services/forecasting/shared/database/base.py

@@ -0,0 +1,56 @@
+"""
+Base database configuration for all microservices
+"""
+
+import os
+from sqlalchemy import create_engine
+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
+from sqlalchemy.orm import sessionmaker, declarative_base
+from sqlalchemy.pool import StaticPool
+import logging
+
+logger = logging.getLogger(__name__)
+
+Base = declarative_base()
+
+class DatabaseManager:
+    """Database manager for microservices"""
+    
+    def __init__(self, database_url: str):
+        self.database_url = database_url
+        self.async_engine = create_async_engine(
+            database_url,
+            echo=False,
+            pool_pre_ping=True,
+            pool_recycle=300,
+            pool_size=20,
+            max_overflow=30
+        )
+        
+        self.async_session_local = sessionmaker(
+            self.async_engine,
+            class_=AsyncSession,
+            expire_on_commit=False
+        )
+    
+    async def get_db(self):
+        """Get database session"""
+        async with self.async_session_local() as session:
+            try:
+                yield session
+            except Exception as e:
+                logger.error(f"Database session error: {e}")
+                await session.rollback()
+                raise
+            finally:
+                await session.close()
+    
+    async def create_tables(self):
+        """Create database tables"""
+        async with self.async_engine.begin() as conn:
+            await conn.run_sync(Base.metadata.create_all)
+    
+    async def drop_tables(self):
+        """Drop database tables"""
+        async with self.async_engine.begin() as conn:
+            await conn.run_sync(Base.metadata.drop_all)

services/forecasting/shared/messaging/events.py

@@ -0,0 +1,73 @@
+"""
+Event definitions for microservices communication
+"""
+
+from dataclasses import dataclass
+from datetime import datetime
+from typing import Dict, Any, Optional
+import uuid
+
+@dataclass
+class BaseEvent:
+    """Base event class"""
+    event_id: str
+    event_type: str
+    service_name: str
+    timestamp: datetime
+    data: Dict[str, Any]
+    correlation_id: Optional[str] = None
+    
+    def __post_init__(self):
+        if not self.event_id:
+            self.event_id = str(uuid.uuid4())
+        if not self.timestamp:
+            self.timestamp = datetime.utcnow()
+
+# Training Events
+@dataclass
+class TrainingStartedEvent(BaseEvent):
+    event_type: str = "training.started"
+
+@dataclass
+class TrainingCompletedEvent(BaseEvent):
+    event_type: str = "training.completed"
+
+@dataclass
+class TrainingFailedEvent(BaseEvent):
+    event_type: str = "training.failed"
+
+# Forecasting Events
+@dataclass
+class ForecastGeneratedEvent(BaseEvent):
+    event_type: str = "forecast.generated"
+
+@dataclass
+class ForecastRequestedEvent(BaseEvent):
+    event_type: str = "forecast.requested"
+
+# User Events
+@dataclass
+class UserRegisteredEvent(BaseEvent):
+    event_type: str = "user.registered"
+
+@dataclass
+class UserLoginEvent(BaseEvent):
+    event_type: str = "user.login"
+
+# Tenant Events
+@dataclass
+class TenantCreatedEvent(BaseEvent):
+    event_type: str = "tenant.created"
+
+@dataclass
+class TenantUpdatedEvent(BaseEvent):
+    event_type: str = "tenant.updated"
+
+# Notification Events
+@dataclass
+class NotificationSentEvent(BaseEvent):
+    event_type: str = "notification.sent"
+
+@dataclass
+class NotificationFailedEvent(BaseEvent):
+    event_type: str = "notification.failed"

services/forecasting/shared/messaging/rabbitmq.py

@@ -0,0 +1,96 @@
+"""
+RabbitMQ messaging client for microservices
+"""
+
+import asyncio
+import json
+import logging
+from typing import Dict, Any, Callable
+import aio_pika
+from aio_pika import connect_robust, Message, DeliveryMode
+
+logger = logging.getLogger(__name__)
+
+class RabbitMQClient:
+    """RabbitMQ client for microservices communication"""
+    
+    def __init__(self, connection_url: str):
+        self.connection_url = connection_url
+        self.connection = None
+        self.channel = None
+    
+    async def connect(self):
+        """Connect to RabbitMQ"""
+        try:
+            self.connection = await connect_robust(self.connection_url)
+            self.channel = await self.connection.channel()
+            logger.info("Connected to RabbitMQ")
+        except Exception as e:
+            logger.error(f"Failed to connect to RabbitMQ: {e}")
+            raise
+    
+    async def disconnect(self):
+        """Disconnect from RabbitMQ"""
+        if self.connection:
+            await self.connection.close()
+            logger.info("Disconnected from RabbitMQ")
+    
+    async def publish_event(self, exchange_name: str, routing_key: str, event_data: Dict[str, Any]):
+        """Publish event to RabbitMQ"""
+        try:
+            if not self.channel:
+                await self.connect()
+            
+            # Declare exchange
+            exchange = await self.channel.declare_exchange(
+                exchange_name,
+                aio_pika.ExchangeType.TOPIC,
+                durable=True
+            )
+            
+            # Create message
+            message = Message(
+                json.dumps(event_data).encode(),
+                delivery_mode=DeliveryMode.PERSISTENT,
+                content_type="application/json"
+            )
+            
+            # Publish message
+            await exchange.publish(message, routing_key=routing_key)
+            
+            logger.info(f"Published event to {exchange_name} with routing key {routing_key}")
+            
+        except Exception as e:
+            logger.error(f"Failed to publish event: {e}")
+            raise
+    
+    async def consume_events(self, exchange_name: str, queue_name: str, routing_key: str, callback: Callable):
+        """Consume events from RabbitMQ"""
+        try:
+            if not self.channel:
+                await self.connect()
+            
+            # Declare exchange
+            exchange = await self.channel.declare_exchange(
+                exchange_name,
+                aio_pika.ExchangeType.TOPIC,
+                durable=True
+            )
+            
+            # Declare queue
+            queue = await self.channel.declare_queue(
+                queue_name,
+                durable=True
+            )
+            
+            # Bind queue to exchange
+            await queue.bind(exchange, routing_key)
+            
+            # Set up consumer
+            await queue.consume(callback)
+            
+            logger.info(f"Started consuming events from {queue_name}")
+            
+        except Exception as e:
+            logger.error(f"Failed to consume events: {e}")
+            raise

services/forecasting/shared/monitoring/logging.py

@@ -0,0 +1,77 @@
+"""
+Centralized logging configuration for microservices
+"""
+
+import logging
+import logging.config
+import os
+from typing import Dict, Any
+
+def setup_logging(service_name: str, log_level: str = "INFO") -> None:
+    """Set up logging configuration for a microservice"""
+    
+    config: Dict[str, Any] = {
+        "version": 1,
+        "disable_existing_loggers": False,
+        "formatters": {
+            "standard": {
+                "format": "%(asctime)s [%(levelname)s] %(name)s: %(message)s"
+            },
+            "detailed": {
+                "format": "%(asctime)s [%(levelname)s] %(name)s [%(filename)s:%(lineno)d] %(message)s"
+            },
+            "json": {
+                "()": "pythonjsonlogger.jsonlogger.JsonFormatter",
+                "format": "%(asctime)s %(name)s %(levelname)s %(message)s"
+            }
+        },
+        "handlers": {
+            "console": {
+                "class": "logging.StreamHandler",
+                "level": log_level,
+                "formatter": "standard",
+                "stream": "ext://sys.stdout"
+            },
+            "file": {
+                "class": "logging.FileHandler",
+                "level": log_level,
+                "formatter": "detailed",
+                "filename": f"/var/log/{service_name}.log",
+                "mode": "a"
+            },
+            "logstash": {
+                "class": "logstash.TCPLogstashHandler",
+                "host": os.getenv("LOGSTASH_HOST", "localhost"),
+                "port": int(os.getenv("LOGSTASH_PORT", "5000")),
+                "version": 1,
+                "message_type": "logstash",
+                "fqdn": False,
+                "tags": [service_name]
+            }
+        },
+        "loggers": {
+            "": {
+                "handlers": ["console", "file"],
+                "level": log_level,
+                "propagate": False
+            },
+            "uvicorn": {
+                "handlers": ["console"],
+                "level": log_level,
+                "propagate": False
+            },
+            "uvicorn.access": {
+                "handlers": ["console"],
+                "level": log_level,
+                "propagate": False
+            }
+        }
+    }
+    
+    # Add logstash handler if in production
+    if os.getenv("ENVIRONMENT") == "production":
+        config["loggers"][""]["handlers"].append("logstash")
+    
+    logging.config.dictConfig(config)
+    logger = logging.getLogger(__name__)
+    logger.info(f"Logging configured for {service_name}")

services/forecasting/shared/monitoring/metrics.py

@@ -0,0 +1,112 @@
+"""
+Metrics collection for microservices
+"""
+
+import time
+import logging
+from typing import Dict, Any
+from prometheus_client import Counter, Histogram, Gauge, start_http_server
+from functools import wraps
+
+logger = logging.getLogger(__name__)
+
+# Prometheus metrics
+REQUEST_COUNT = Counter(
+    'http_requests_total',
+    'Total HTTP requests',
+    ['method', 'endpoint', 'status_code', 'service']
+)
+
+REQUEST_DURATION = Histogram(
+    'http_request_duration_seconds',
+    'HTTP request duration in seconds',
+    ['method', 'endpoint', 'service']
+)
+
+ACTIVE_CONNECTIONS = Gauge(
+    'active_connections',
+    'Active database connections',
+    ['service']
+)
+
+TRAINING_JOBS = Counter(
+    'training_jobs_total',
+    'Total training jobs',
+    ['status', 'service']
+)
+
+FORECASTS_GENERATED = Counter(
+    'forecasts_generated_total',
+    'Total forecasts generated',
+    ['service']
+)
+
+class MetricsCollector:
+    """Metrics collector for microservices"""
+    
+    def __init__(self, service_name: str):
+        self.service_name = service_name
+        self.start_time = time.time()
+    
+    def start_metrics_server(self, port: int = 8080):
+        """Start Prometheus metrics server"""
+        try:
+            start_http_server(port)
+            logger.info(f"Metrics server started on port {port}")
+        except Exception as e:
+            logger.error(f"Failed to start metrics server: {e}")
+    
+    def record_request(self, method: str, endpoint: str, status_code: int, duration: float):
+        """Record HTTP request metrics"""
+        REQUEST_COUNT.labels(
+            method=method,
+            endpoint=endpoint,
+            status_code=status_code,
+            service=self.service_name
+        ).inc()
+        
+        REQUEST_DURATION.labels(
+            method=method,
+            endpoint=endpoint,
+            service=self.service_name
+        ).observe(duration)
+    
+    def record_training_job(self, status: str):
+        """Record training job metrics"""
+        TRAINING_JOBS.labels(
+            status=status,
+            service=self.service_name
+        ).inc()
+    
+    def record_forecast_generated(self):
+        """Record forecast generation metrics"""
+        FORECASTS_GENERATED.labels(
+            service=self.service_name
+        ).inc()
+    
+    def set_active_connections(self, count: int):
+        """Set active database connections"""
+        ACTIVE_CONNECTIONS.labels(
+            service=self.service_name
+        ).set(count)
+
+def metrics_middleware(metrics_collector: MetricsCollector):
+    """Middleware to collect metrics"""
+    
+    def middleware(request, call_next):
+        start_time = time.time()
+        
+        response = call_next(request)
+        
+        duration = time.time() - start_time
+        
+        metrics_collector.record_request(
+            method=request.method,
+            endpoint=request.url.path,
+            status_code=response.status_code,
+            duration=duration
+        )
+        
+        return response
+    
+    return middleware

services/forecasting/shared/utils/datetime_utils.py

@@ -0,0 +1,71 @@
+"""
+DateTime utilities for microservices
+"""
+
+from datetime import datetime, timezone, timedelta
+from typing import Optional
+import pytz
+
+def utc_now() -> datetime:
+    """Get current UTC datetime"""
+    return datetime.now(timezone.utc)
+
+def madrid_now() -> datetime:
+    """Get current Madrid datetime"""
+    madrid_tz = pytz.timezone('Europe/Madrid')
+    return datetime.now(madrid_tz)
+
+def to_utc(dt: datetime) -> datetime:
+    """Convert datetime to UTC"""
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(timezone.utc)
+
+def to_madrid(dt: datetime) -> datetime:
+    """Convert datetime to Madrid timezone"""
+    madrid_tz = pytz.timezone('Europe/Madrid')
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(madrid_tz)
+
+def format_datetime(dt: datetime, format_str: str = "%Y-%m-%d %H:%M:%S") -> str:
+    """Format datetime as string"""
+    return dt.strftime(format_str)
+
+def parse_datetime(dt_str: str, format_str: str = "%Y-%m-%d %H:%M:%S") -> datetime:
+    """Parse datetime from string"""
+    return datetime.strptime(dt_str, format_str)
+
+def is_business_hours(dt: Optional[datetime] = None) -> bool:
+    """Check if datetime is during business hours (9 AM - 6 PM Madrid time)"""
+    if dt is None:
+        dt = madrid_now()
+    
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    
+    madrid_dt = to_madrid(dt)
+    
+    # Check if it's a weekday (Monday=0, Sunday=6)
+    if madrid_dt.weekday() >= 5:  # Weekend
+        return False
+    
+    # Check if it's business hours
+    return 9 <= madrid_dt.hour < 18
+
+def next_business_day(dt: Optional[datetime] = None) -> datetime:
+    """Get next business day"""
+    if dt is None:
+        dt = madrid_now()
+    
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    
+    madrid_dt = to_madrid(dt)
+    
+    # Add days until we reach a weekday
+    while madrid_dt.weekday() >= 5:  # Weekend
+        madrid_dt += timedelta(days=1)
+    
+    # Set to 9 AM
+    return madrid_dt.replace(hour=9, minute=0, second=0, microsecond=0)

services/forecasting/shared/utils/validation.py

@@ -0,0 +1,67 @@
+"""
+Validation utilities for microservices
+"""
+
+import re
+from typing import Any, Optional
+from email_validator import validate_email, EmailNotValidError
+
+def validate_spanish_phone(phone: str) -> bool:
+    """Validate Spanish phone number"""
+    # Spanish phone pattern: +34 followed by 9 digits
+    pattern = r'^(\+34|0034|34)?[6-9]\d{8}$'
+    return bool(re.match(pattern, phone.replace(' ', '').replace('-', '')))
+
+def validate_email_address(email: str) -> bool:
+    """Validate email address"""
+    try:
+        validate_email(email)
+        return True
+    except EmailNotValidError:
+        return False
+
+def validate_tenant_name(name: str) -> bool:
+    """Validate tenant name"""
+    # Must be 2-50 characters, letters, numbers, spaces, hyphens, apostrophes
+    pattern = r"^[a-zA-ZÀ-ÿ0-9\s\-']{2,50}$"
+    return bool(re.match(pattern, name))
+
+def validate_address(address: str) -> bool:
+    """Validate address"""
+    # Must be 5-200 characters
+    return 5 <= len(address.strip()) <= 200
+
+def validate_coordinates(latitude: float, longitude: float) -> bool:
+    """Validate Madrid coordinates"""
+    # Madrid is roughly between these coordinates
+    madrid_bounds = {
+        'lat_min': 40.3,
+        'lat_max': 40.6,
+        'lon_min': -3.8,
+        'lon_max': -3.5
+    }
+    
+    return (
+        madrid_bounds['lat_min'] <= latitude <= madrid_bounds['lat_max'] and
+        madrid_bounds['lon_min'] <= longitude <= madrid_bounds['lon_max']
+    )
+
+def validate_product_name(name: str) -> bool:
+    """Validate product name"""
+    # Must be 1-50 characters, letters, numbers, spaces
+    pattern = r"^[a-zA-ZÀ-ÿ0-9\s]{1,50}$"
+    return bool(re.match(pattern, name))
+
+def validate_positive_number(value: Any) -> bool:
+    """Validate positive number"""
+    try:
+        return float(value) > 0
+    except (ValueError, TypeError):
+        return False
+
+def validate_non_negative_number(value: Any) -> bool:
+    """Validate non-negative number"""
+    try:
+        return float(value) >= 0
+    except (ValueError, TypeError):
+        return False

services/notification/Dockerfile

@@ -0,0 +1,31 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    gcc \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Add shared libraries to Python path
+ENV PYTHONPATH="/app:/app/shared:$PYTHONPATH"
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8000/health || exit 1
+
+# Run application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

services/notification/app/core/config.py

@@ -0,0 +1,32 @@
+"""
+uLunotification service configuration
+"""
+
+import os
+from pydantic import BaseSettings
+
+class Settings(BaseSettings):
+    """Application settings"""
+    
+    # Basic settings
+    APP_NAME: str = "uLunotification Service"
+    VERSION: str = "1.0.0"
+    DEBUG: bool = os.getenv("DEBUG", "False").lower() == "true"
+    LOG_LEVEL: str = os.getenv("LOG_LEVEL", "INFO")
+    
+    # Database settings
+    DATABASE_URL: str = os.getenv("DATABASE_URL", "postgresql+asyncpg://notification_user:notification_pass123@notification-db:5432/notification_db")
+    
+    # Redis settings
+    REDIS_URL: str = os.getenv("REDIS_URL", "redis://redis:6379/0")
+    
+    # RabbitMQ settings
+    RABBITMQ_URL: str = os.getenv("RABBITMQ_URL", "amqp://bakery:forecast123@rabbitmq:5672/")
+    
+    # Service URLs
+    AUTH_SERVICE_URL: str = os.getenv("AUTH_SERVICE_URL", "http://auth-service:8000")
+    
+    class Config:
+        env_file = ".env"
+
+settings = Settings()

services/notification/app/core/database.py

@@ -0,0 +1,12 @@
+"""
+Database configuration for notification service
+"""
+
+from shared.database.base import DatabaseManager
+from app.core.config import settings
+
+# Initialize database manager
+database_manager = DatabaseManager(settings.DATABASE_URL)
+
+# Alias for convenience
+get_db = database_manager.get_db

services/notification/app/main.py

@@ -0,0 +1,61 @@
+"""
+uLunotification Service
+"""
+
+import logging
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.core.config import settings
+from app.core.database import database_manager
+from shared.monitoring.logging import setup_logging
+from shared.monitoring.metrics import MetricsCollector
+
+# Setup logging
+setup_logging("notification-service", "INFO")
+logger = logging.getLogger(__name__)
+
+# Create FastAPI app
+app = FastAPI(
+    title="uLunotification Service",
+    description="uLunotification service for bakery forecasting",
+    version="1.0.0"
+)
+
+# Initialize metrics collector
+metrics_collector = MetricsCollector("notification-service")
+
+# CORS middleware
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+@app.on_event("startup")
+async def startup_event():
+    """Application startup"""
+    logger.info("Starting uLunotification Service")
+    
+    # Create database tables
+    await database_manager.create_tables()
+    
+    # Start metrics server
+    metrics_collector.start_metrics_server(8080)
+    
+    logger.info("uLunotification Service started successfully")
+
+@app.get("/health")
+async def health_check():
+    """Health check endpoint"""
+    return {
+        "status": "healthy",
+        "service": "notification-service",
+        "version": "1.0.0"
+    }
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=8000)

services/notification/requirements.txt

@@ -0,0 +1,13 @@
+fastapi==0.104.1
+uvicorn[standard]==0.24.0
+sqlalchemy==2.0.23
+asyncpg==0.29.0
+alembic==1.12.1
+pydantic==2.5.0
+pydantic-settings==2.1.0
+httpx==0.25.2
+redis==5.0.1
+aio-pika==9.3.0
+prometheus-client==0.17.1
+python-json-logger==2.0.4
+pytz==2023.3

services/notification/shared/auth/decorators.py

@@ -0,0 +1,41 @@
+"""
+Authentication decorators for FastAPI
+"""
+
+from functools import wraps
+from fastapi import HTTPException, Depends
+from fastapi.security import HTTPBearer
+import httpx
+import logging
+
+logger = logging.getLogger(__name__)
+
+security = HTTPBearer()
+
+def verify_service_token(auth_service_url: str):
+    """Verify service token with auth service"""
+    
+    async def verify_token(token: str = Depends(security)):
+        try:
+            async with httpx.AsyncClient() as client:
+                response = await client.post(
+                    f"{auth_service_url}/verify",
+                    headers={"Authorization": f"Bearer {token.credentials}"}
+                )
+                
+                if response.status_code == 200:
+                    return response.json()
+                else:
+                    raise HTTPException(
+                        status_code=401,
+                        detail="Invalid authentication credentials"
+                    )
+                    
+        except httpx.RequestError as e:
+            logger.error(f"Auth service unavailable: {e}")
+            raise HTTPException(
+                status_code=503,
+                detail="Authentication service unavailable"
+            )
+    
+    return verify_token

services/notification/shared/auth/jwt_handler.py

@@ -0,0 +1,58 @@
+"""
+Shared JWT Authentication Handler
+Used across all microservices for consistent authentication
+"""
+
+import jwt
+from datetime import datetime, timedelta
+from typing import Optional, Dict, Any
+import logging
+
+logger = logging.getLogger(__name__)
+
+class JWTHandler:
+    """JWT token handling for microservices"""
+    
+    def __init__(self, secret_key: str, algorithm: str = "HS256"):
+        self.secret_key = secret_key
+        self.algorithm = algorithm
+    
+    def create_access_token(self, data: Dict[str, Any], expires_delta: Optional[timedelta] = None) -> str:
+        """Create JWT access token"""
+        to_encode = data.copy()
+        
+        if expires_delta:
+            expire = datetime.utcnow() + expires_delta
+        else:
+            expire = datetime.utcnow() + timedelta(minutes=30)
+        
+        to_encode.update({"exp": expire, "type": "access"})
+        
+        encoded_jwt = jwt.encode(to_encode, self.secret_key, algorithm=self.algorithm)
+        return encoded_jwt
+    
+    def create_refresh_token(self, data: Dict[str, Any], expires_delta: Optional[timedelta] = None) -> str:
+        """Create JWT refresh token"""
+        to_encode = data.copy()
+        
+        if expires_delta:
+            expire = datetime.utcnow() + expires_delta
+        else:
+            expire = datetime.utcnow() + timedelta(days=7)
+        
+        to_encode.update({"exp": expire, "type": "refresh"})
+        
+        encoded_jwt = jwt.encode(to_encode, self.secret_key, algorithm=self.algorithm)
+        return encoded_jwt
+    
+    def verify_token(self, token: str) -> Optional[Dict[str, Any]]:
+        """Verify and decode JWT token"""
+        try:
+            payload = jwt.decode(token, self.secret_key, algorithms=[self.algorithm])
+            return payload
+        except jwt.ExpiredSignatureError:
+            logger.warning("Token has expired")
+            return None
+        except jwt.InvalidTokenError:
+            logger.warning("Invalid token")
+            return None

services/notification/shared/database/base.py

@@ -0,0 +1,56 @@
+"""
+Base database configuration for all microservices
+"""
+
+import os
+from sqlalchemy import create_engine
+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
+from sqlalchemy.orm import sessionmaker, declarative_base
+from sqlalchemy.pool import StaticPool
+import logging
+
+logger = logging.getLogger(__name__)
+
+Base = declarative_base()
+
+class DatabaseManager:
+    """Database manager for microservices"""
+    
+    def __init__(self, database_url: str):
+        self.database_url = database_url
+        self.async_engine = create_async_engine(
+            database_url,
+            echo=False,
+            pool_pre_ping=True,
+            pool_recycle=300,
+            pool_size=20,
+            max_overflow=30
+        )
+        
+        self.async_session_local = sessionmaker(
+            self.async_engine,
+            class_=AsyncSession,
+            expire_on_commit=False
+        )
+    
+    async def get_db(self):
+        """Get database session"""
+        async with self.async_session_local() as session:
+            try:
+                yield session
+            except Exception as e:
+                logger.error(f"Database session error: {e}")
+                await session.rollback()
+                raise
+            finally:
+                await session.close()
+    
+    async def create_tables(self):
+        """Create database tables"""
+        async with self.async_engine.begin() as conn:
+            await conn.run_sync(Base.metadata.create_all)
+    
+    async def drop_tables(self):
+        """Drop database tables"""
+        async with self.async_engine.begin() as conn:
+            await conn.run_sync(Base.metadata.drop_all)

services/notification/shared/messaging/events.py

@@ -0,0 +1,73 @@
+"""
+Event definitions for microservices communication
+"""
+
+from dataclasses import dataclass
+from datetime import datetime
+from typing import Dict, Any, Optional
+import uuid
+
+@dataclass
+class BaseEvent:
+    """Base event class"""
+    event_id: str
+    event_type: str
+    service_name: str
+    timestamp: datetime
+    data: Dict[str, Any]
+    correlation_id: Optional[str] = None
+    
+    def __post_init__(self):
+        if not self.event_id:
+            self.event_id = str(uuid.uuid4())
+        if not self.timestamp:
+            self.timestamp = datetime.utcnow()
+
+# Training Events
+@dataclass
+class TrainingStartedEvent(BaseEvent):
+    event_type: str = "training.started"
+
+@dataclass
+class TrainingCompletedEvent(BaseEvent):
+    event_type: str = "training.completed"
+
+@dataclass
+class TrainingFailedEvent(BaseEvent):
+    event_type: str = "training.failed"
+
+# Forecasting Events
+@dataclass
+class ForecastGeneratedEvent(BaseEvent):
+    event_type: str = "forecast.generated"
+
+@dataclass
+class ForecastRequestedEvent(BaseEvent):
+    event_type: str = "forecast.requested"
+
+# User Events
+@dataclass
+class UserRegisteredEvent(BaseEvent):
+    event_type: str = "user.registered"
+
+@dataclass
+class UserLoginEvent(BaseEvent):
+    event_type: str = "user.login"
+
+# Tenant Events
+@dataclass
+class TenantCreatedEvent(BaseEvent):
+    event_type: str = "tenant.created"
+
+@dataclass
+class TenantUpdatedEvent(BaseEvent):
+    event_type: str = "tenant.updated"
+
+# Notification Events
+@dataclass
+class NotificationSentEvent(BaseEvent):
+    event_type: str = "notification.sent"
+
+@dataclass
+class NotificationFailedEvent(BaseEvent):
+    event_type: str = "notification.failed"

services/notification/shared/messaging/rabbitmq.py

@@ -0,0 +1,96 @@
+"""
+RabbitMQ messaging client for microservices
+"""
+
+import asyncio
+import json
+import logging
+from typing import Dict, Any, Callable
+import aio_pika
+from aio_pika import connect_robust, Message, DeliveryMode
+
+logger = logging.getLogger(__name__)
+
+class RabbitMQClient:
+    """RabbitMQ client for microservices communication"""
+    
+    def __init__(self, connection_url: str):
+        self.connection_url = connection_url
+        self.connection = None
+        self.channel = None
+    
+    async def connect(self):
+        """Connect to RabbitMQ"""
+        try:
+            self.connection = await connect_robust(self.connection_url)
+            self.channel = await self.connection.channel()
+            logger.info("Connected to RabbitMQ")
+        except Exception as e:
+            logger.error(f"Failed to connect to RabbitMQ: {e}")
+            raise
+    
+    async def disconnect(self):
+        """Disconnect from RabbitMQ"""
+        if self.connection:
+            await self.connection.close()
+            logger.info("Disconnected from RabbitMQ")
+    
+    async def publish_event(self, exchange_name: str, routing_key: str, event_data: Dict[str, Any]):
+        """Publish event to RabbitMQ"""
+        try:
+            if not self.channel:
+                await self.connect()
+            
+            # Declare exchange
+            exchange = await self.channel.declare_exchange(
+                exchange_name,
+                aio_pika.ExchangeType.TOPIC,
+                durable=True
+            )
+            
+            # Create message
+            message = Message(
+                json.dumps(event_data).encode(),
+                delivery_mode=DeliveryMode.PERSISTENT,
+                content_type="application/json"
+            )
+            
+            # Publish message
+            await exchange.publish(message, routing_key=routing_key)
+            
+            logger.info(f"Published event to {exchange_name} with routing key {routing_key}")
+            
+        except Exception as e:
+            logger.error(f"Failed to publish event: {e}")
+            raise
+    
+    async def consume_events(self, exchange_name: str, queue_name: str, routing_key: str, callback: Callable):
+        """Consume events from RabbitMQ"""
+        try:
+            if not self.channel:
+                await self.connect()
+            
+            # Declare exchange
+            exchange = await self.channel.declare_exchange(
+                exchange_name,
+                aio_pika.ExchangeType.TOPIC,
+                durable=True
+            )
+            
+            # Declare queue
+            queue = await self.channel.declare_queue(
+                queue_name,
+                durable=True
+            )
+            
+            # Bind queue to exchange
+            await queue.bind(exchange, routing_key)
+            
+            # Set up consumer
+            await queue.consume(callback)
+            
+            logger.info(f"Started consuming events from {queue_name}")
+            
+        except Exception as e:
+            logger.error(f"Failed to consume events: {e}")
+            raise

services/notification/shared/monitoring/logging.py

@@ -0,0 +1,77 @@
+"""
+Centralized logging configuration for microservices
+"""
+
+import logging
+import logging.config
+import os
+from typing import Dict, Any
+
+def setup_logging(service_name: str, log_level: str = "INFO") -> None:
+    """Set up logging configuration for a microservice"""
+    
+    config: Dict[str, Any] = {
+        "version": 1,
+        "disable_existing_loggers": False,
+        "formatters": {
+            "standard": {
+                "format": "%(asctime)s [%(levelname)s] %(name)s: %(message)s"
+            },
+            "detailed": {
+                "format": "%(asctime)s [%(levelname)s] %(name)s [%(filename)s:%(lineno)d] %(message)s"
+            },
+            "json": {
+                "()": "pythonjsonlogger.jsonlogger.JsonFormatter",
+                "format": "%(asctime)s %(name)s %(levelname)s %(message)s"
+            }
+        },
+        "handlers": {
+            "console": {
+                "class": "logging.StreamHandler",
+                "level": log_level,
+                "formatter": "standard",
+                "stream": "ext://sys.stdout"
+            },
+            "file": {
+                "class": "logging.FileHandler",
+                "level": log_level,
+                "formatter": "detailed",
+                "filename": f"/var/log/{service_name}.log",
+                "mode": "a"
+            },
+            "logstash": {
+                "class": "logstash.TCPLogstashHandler",
+                "host": os.getenv("LOGSTASH_HOST", "localhost"),
+                "port": int(os.getenv("LOGSTASH_PORT", "5000")),
+                "version": 1,
+                "message_type": "logstash",
+                "fqdn": False,
+                "tags": [service_name]
+            }
+        },
+        "loggers": {
+            "": {
+                "handlers": ["console", "file"],
+                "level": log_level,
+                "propagate": False
+            },
+            "uvicorn": {
+                "handlers": ["console"],
+                "level": log_level,
+                "propagate": False
+            },
+            "uvicorn.access": {
+                "handlers": ["console"],
+                "level": log_level,
+                "propagate": False
+            }
+        }
+    }
+    
+    # Add logstash handler if in production
+    if os.getenv("ENVIRONMENT") == "production":
+        config["loggers"][""]["handlers"].append("logstash")
+    
+    logging.config.dictConfig(config)
+    logger = logging.getLogger(__name__)
+    logger.info(f"Logging configured for {service_name}")

services/notification/shared/monitoring/metrics.py

@@ -0,0 +1,112 @@
+"""
+Metrics collection for microservices
+"""
+
+import time
+import logging
+from typing import Dict, Any
+from prometheus_client import Counter, Histogram, Gauge, start_http_server
+from functools import wraps
+
+logger = logging.getLogger(__name__)
+
+# Prometheus metrics
+REQUEST_COUNT = Counter(
+    'http_requests_total',
+    'Total HTTP requests',
+    ['method', 'endpoint', 'status_code', 'service']
+)
+
+REQUEST_DURATION = Histogram(
+    'http_request_duration_seconds',
+    'HTTP request duration in seconds',
+    ['method', 'endpoint', 'service']
+)
+
+ACTIVE_CONNECTIONS = Gauge(
+    'active_connections',
+    'Active database connections',
+    ['service']
+)
+
+TRAINING_JOBS = Counter(
+    'training_jobs_total',
+    'Total training jobs',
+    ['status', 'service']
+)
+
+FORECASTS_GENERATED = Counter(
+    'forecasts_generated_total',
+    'Total forecasts generated',
+    ['service']
+)
+
+class MetricsCollector:
+    """Metrics collector for microservices"""
+    
+    def __init__(self, service_name: str):
+        self.service_name = service_name
+        self.start_time = time.time()
+    
+    def start_metrics_server(self, port: int = 8080):
+        """Start Prometheus metrics server"""
+        try:
+            start_http_server(port)
+            logger.info(f"Metrics server started on port {port}")
+        except Exception as e:
+            logger.error(f"Failed to start metrics server: {e}")
+    
+    def record_request(self, method: str, endpoint: str, status_code: int, duration: float):
+        """Record HTTP request metrics"""
+        REQUEST_COUNT.labels(
+            method=method,
+            endpoint=endpoint,
+            status_code=status_code,
+            service=self.service_name
+        ).inc()
+        
+        REQUEST_DURATION.labels(
+            method=method,
+            endpoint=endpoint,
+            service=self.service_name
+        ).observe(duration)
+    
+    def record_training_job(self, status: str):
+        """Record training job metrics"""
+        TRAINING_JOBS.labels(
+            status=status,
+            service=self.service_name
+        ).inc()
+    
+    def record_forecast_generated(self):
+        """Record forecast generation metrics"""
+        FORECASTS_GENERATED.labels(
+            service=self.service_name
+        ).inc()
+    
+    def set_active_connections(self, count: int):
+        """Set active database connections"""
+        ACTIVE_CONNECTIONS.labels(
+            service=self.service_name
+        ).set(count)
+
+def metrics_middleware(metrics_collector: MetricsCollector):
+    """Middleware to collect metrics"""
+    
+    def middleware(request, call_next):
+        start_time = time.time()
+        
+        response = call_next(request)
+        
+        duration = time.time() - start_time
+        
+        metrics_collector.record_request(
+            method=request.method,
+            endpoint=request.url.path,
+            status_code=response.status_code,
+            duration=duration
+        )
+        
+        return response
+    
+    return middleware

services/notification/shared/utils/datetime_utils.py

@@ -0,0 +1,71 @@
+"""
+DateTime utilities for microservices
+"""
+
+from datetime import datetime, timezone, timedelta
+from typing import Optional
+import pytz
+
+def utc_now() -> datetime:
+    """Get current UTC datetime"""
+    return datetime.now(timezone.utc)
+
+def madrid_now() -> datetime:
+    """Get current Madrid datetime"""
+    madrid_tz = pytz.timezone('Europe/Madrid')
+    return datetime.now(madrid_tz)
+
+def to_utc(dt: datetime) -> datetime:
+    """Convert datetime to UTC"""
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(timezone.utc)
+
+def to_madrid(dt: datetime) -> datetime:
+    """Convert datetime to Madrid timezone"""
+    madrid_tz = pytz.timezone('Europe/Madrid')
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    return dt.astimezone(madrid_tz)
+
+def format_datetime(dt: datetime, format_str: str = "%Y-%m-%d %H:%M:%S") -> str:
+    """Format datetime as string"""
+    return dt.strftime(format_str)
+
+def parse_datetime(dt_str: str, format_str: str = "%Y-%m-%d %H:%M:%S") -> datetime:
+    """Parse datetime from string"""
+    return datetime.strptime(dt_str, format_str)
+
+def is_business_hours(dt: Optional[datetime] = None) -> bool:
+    """Check if datetime is during business hours (9 AM - 6 PM Madrid time)"""
+    if dt is None:
+        dt = madrid_now()
+    
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    
+    madrid_dt = to_madrid(dt)
+    
+    # Check if it's a weekday (Monday=0, Sunday=6)
+    if madrid_dt.weekday() >= 5:  # Weekend
+        return False
+    
+    # Check if it's business hours
+    return 9 <= madrid_dt.hour < 18
+
+def next_business_day(dt: Optional[datetime] = None) -> datetime:
+    """Get next business day"""
+    if dt is None:
+        dt = madrid_now()
+    
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=timezone.utc)
+    
+    madrid_dt = to_madrid(dt)
+    
+    # Add days until we reach a weekday
+    while madrid_dt.weekday() >= 5:  # Weekend
+        madrid_dt += timedelta(days=1)
+    
+    # Set to 9 AM
+    return madrid_dt.replace(hour=9, minute=0, second=0, microsecond=0)

services/notification/shared/utils/validation.py

@@ -0,0 +1,67 @@
+"""
+Validation utilities for microservices
+"""
+
+import re
+from typing import Any, Optional
+from email_validator import validate_email, EmailNotValidError
+
+def validate_spanish_phone(phone: str) -> bool:
+    """Validate Spanish phone number"""
+    # Spanish phone pattern: +34 followed by 9 digits
+    pattern = r'^(\+34|0034|34)?[6-9]\d{8}$'
+    return bool(re.match(pattern, phone.replace(' ', '').replace('-', '')))
+
+def validate_email_address(email: str) -> bool:
+    """Validate email address"""
+    try:
+        validate_email(email)
+        return True
+    except EmailNotValidError:
+        return False
+
+def validate_tenant_name(name: str) -> bool:
+    """Validate tenant name"""
+    # Must be 2-50 characters, letters, numbers, spaces, hyphens, apostrophes
+    pattern = r"^[a-zA-ZÀ-ÿ0-9\s\-']{2,50}$"
+    return bool(re.match(pattern, name))
+
+def validate_address(address: str) -> bool:
+    """Validate address"""
+    # Must be 5-200 characters
+    return 5 <= len(address.strip()) <= 200
+
+def validate_coordinates(latitude: float, longitude: float) -> bool:
+    """Validate Madrid coordinates"""
+    # Madrid is roughly between these coordinates
+    madrid_bounds = {
+        'lat_min': 40.3,
+        'lat_max': 40.6,
+        'lon_min': -3.8,
+        'lon_max': -3.5
+    }
+    
+    return (
+        madrid_bounds['lat_min'] <= latitude <= madrid_bounds['lat_max'] and
+        madrid_bounds['lon_min'] <= longitude <= madrid_bounds['lon_max']
+    )
+
+def validate_product_name(name: str) -> bool:
+    """Validate product name"""
+    # Must be 1-50 characters, letters, numbers, spaces
+    pattern = r"^[a-zA-ZÀ-ÿ0-9\s]{1,50}$"
+    return bool(re.match(pattern, name))
+
+def validate_positive_number(value: Any) -> bool:
+    """Validate positive number"""
+    try:
+        return float(value) > 0
+    except (ValueError, TypeError):
+        return False
+
+def validate_non_negative_number(value: Any) -> bool:
+    """Validate non-negative number"""
+    try:
+        return float(value) >= 0
+    except (ValueError, TypeError):
+        return False

services/tenant/Dockerfile

@@ -0,0 +1,31 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    gcc \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Add shared libraries to Python path
+ENV PYTHONPATH="/app:/app/shared:$PYTHONPATH"
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8000/health || exit 1
+
+# Run application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]