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Custom exception class that signals failures in external integrations within the CDocs controller system.

Purpose

IntegrationError is a specialized exception class that inherits from ControllerError. It is designed to be raised when operations involving external integrations (such as third-party APIs, external services, or system integrations) fail. This allows for specific error handling and logging of integration-related failures, distinguishing them from other types of controller errors in the CDocs application. By using this exception, developers can catch and handle integration failures separately from other error types, enabling more granular error recovery strategies and better error reporting.

Source Code

class IntegrationError(ControllerError):
    """Exception raised when an external integration fails."""
    pass

Parameters

Parameter Details

*args: Variable length argument list passed to the parent Exception class. Typically includes the error message as the first argument, followed by any additional context information.

**kwargs: Arbitrary keyword arguments passed to the parent Exception class. Can include additional metadata about the error.

Return Value

Instantiation returns an IntegrationError exception object that can be raised. When raised, it propagates up the call stack until caught by an exception handler. The exception object contains the message and any additional arguments passed during instantiation, accessible via the args attribute inherited from BaseException.

Class Interface

Methods

Attributes

Required Imports

from CDocs.controllers.errors import IntegrationError
from CDocs.controllers.errors import ControllerError

Usage Example

# Raising the exception
try:
    # Attempt to call external API
    response = external_api.call()
    if not response.success:
        raise IntegrationError("Failed to connect to external API", response.error_code)
except IntegrationError as e:
    logging.error(f"Integration failed: {e}")
    # Handle integration failure gracefully
    fallback_handler()

# With custom message and context
try:
    filecloud_controller.sync_documents()
except Exception as e:
    raise IntegrationError(f"FileCloud integration failed: {str(e)}") from e

# Catching specific integration errors
try:
    document_controller.export_to_external_system(doc_id)
except IntegrationError:
    # Handle integration-specific errors
    notify_admin("External system integration is down")
except ControllerError:
    # Handle other controller errors
    log_general_error()

Best Practices

• Always provide a descriptive error message when raising IntegrationError to help with debugging and logging
• Use IntegrationError specifically for external integration failures, not for internal application errors
• Consider using exception chaining (raise ... from e) to preserve the original exception context when wrapping lower-level exceptions
• Catch IntegrationError at appropriate levels in your application to implement retry logic or fallback mechanisms for external service failures
• Log IntegrationError exceptions with sufficient context to diagnose integration issues, including service names, endpoints, and error codes
• Document which external integrations can raise this exception in your API documentation
• Consider implementing exponential backoff or circuit breaker patterns when catching IntegrationError for resilient integration handling

Tags

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