Here's a possible design for mapping status codes between two systems:
Define a mapping table: Create a table that maps the internal status codes of the given system to the external status codes. This table should be easily accessible and modifiable.
Receive status code: The system should receive a status code from the internal system and perform a lookup in the mapping table to determine the corresponding external status code.
Error handling: If the received status code is not found in the mapping table, the system should return an error indicating that the status code is not recognized.
Update mapping table: As the internal system evolves, new status codes may be added. The mapping table should be updated to include these new codes, ensuring that the mapping is up-to-date.
Logging: The system should log the received status code, the corresponding external status code, and any errors encountered during the mapping process. This log will be useful for debugging and tracking the status code mapping process.
Integration with external system: The external status code should be sent to the external system and used by that system to determine the status of the given system.
Automated tests: The mapping process should be thoroughly tested, including testing the error handling and the correctness of the mapping table. Automated tests should be in place to ensure that the mapping process works as expected.
