saas_backend/app/models/system/event_log_model.py

import uuid
from sqlalchemy import Column, String, DateTime, func, Text, Integer, ForeignKey
from sqlalchemy.dialects.postgresql import UUID, JSONB
from app.config.database import Base
import enum

class EventStatus(str, enum.Enum):
    PENDING = "PENDING"
    COMPLETED = "COMPLETED"
    FAILED = "FAILED"

class EventLog(Base):
    __tablename__ = "event_logs"
    
    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    event_id = Column(UUID(as_uuid=True), nullable=False, index=True)
    event_type = Column(String, nullable=False)
    payload = Column(JSONB, nullable=False)
    
    target_module_id = Column(UUID(as_uuid=True), nullable=False)
    target_environment_slug = Column(String, nullable=False)
    target_url = Column(String, nullable=False)
    
    status = Column(String, default=EventStatus.PENDING, index=True)
    retry_count = Column(Integer, default=0)
    next_retry_at = Column(DateTime(timezone=True), default=func.now(), index=True)
    error_log = Column(Text, nullable=True)
    follow_up_event = Column(JSONB, nullable=True)
    
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())

    def __repr__(self):
        return f"<EventLog {self.event_type} -> {self.target_module_id} ({self.status})>"