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J. Moringen, 06/21/2011 09:59 PM
fixed typo
Error Handling¶
This page is only concerned with runtime errors. Program errors are not considered here.
Sources of Runtime Errors¶
- Client-supplied event handlers
- Connectors
- When receiving notifications
- When decoding notifications
- When sending notifications
- Converters
- When converting domain-object -> wire-data
- When converting wire-data -> domain-object
Error Handling Locations¶
- In Connectors (via client-supplied policy)
- Can handle Connector errors
- Can handle Converter errors
- In Processors (via client-supplied policy)
- Can handle errors in client-supplied event handlers
- In callbacks to client code
- Can handle Connector errors
- Can handle Converter errors
- Can handle errors in client-supplied event handlers
Error Transport Mechanisms¶
- Stack unwinding
- Only applicable for pull-path
- Can transport Connector errors
- Can transport Converter errors
- Callback invocation from local error handling policy
- Can handle Connector errors
- Can handle Converter errors
- Can handle errors in client-supplied event handlers
Error Handling Policies¶
- Ignore the error and continue
- Log the error and continue
- Terminate the whole process (i.e.
exit(1)
)