plugin system

backend/app/services/llm/exceptions.py

@@ -0,0 +1,62 @@
+"""
+LLM Service Exceptions
+
+Custom exceptions for LLM service operations.
+"""
+
+
+class LLMError(Exception):
+    """Base exception for LLM service errors"""
+    
+    def __init__(self, message: str, error_code: str = "LLM_ERROR", details: dict = None):
+        super().__init__(message)
+        self.message = message
+        self.error_code = error_code
+        self.details = details or {}
+
+
+class ProviderError(LLMError):
+    """Exception for LLM provider-specific errors"""
+    
+    def __init__(self, message: str, provider: str, error_code: str = "PROVIDER_ERROR", details: dict = None):
+        super().__init__(message, error_code, details)
+        self.provider = provider
+
+
+class SecurityError(LLMError):
+    """Exception for security-related errors"""
+    
+    def __init__(self, message: str, risk_score: float = 0.0, error_code: str = "SECURITY_ERROR", details: dict = None):
+        super().__init__(message, error_code, details)
+        self.risk_score = risk_score
+
+
+class ConfigurationError(LLMError):
+    """Exception for configuration-related errors"""
+    
+    def __init__(self, message: str, error_code: str = "CONFIG_ERROR", details: dict = None):
+        super().__init__(message, error_code, details)
+
+
+class RateLimitError(LLMError):
+    """Exception for rate limiting errors"""
+    
+    def __init__(self, message: str, retry_after: int = None, error_code: str = "RATE_LIMIT_ERROR", details: dict = None):
+        super().__init__(message, error_code, details)
+        self.retry_after = retry_after
+
+
+class TimeoutError(LLMError):
+    """Exception for timeout errors"""
+    
+    def __init__(self, message: str, timeout_duration: float = None, error_code: str = "TIMEOUT_ERROR", details: dict = None):
+        super().__init__(message, error_code, details)
+        self.timeout_duration = timeout_duration
+
+
+class ValidationError(LLMError):
+    """Exception for request validation errors"""
+    
+    def __init__(self, message: str, field: str = None, error_code: str = "VALIDATION_ERROR", details: dict = None):
+        super().__init__(message, error_code, details)
+        self.field = field