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exception-handling.md

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Exception handling Guidelines

The Dicom server code follows below pattern for raising exceptions

  • All exceptions thrown in the dicom-server code inherit from base type DicomServerException.
  • All user input validation errors throw a derived exception from ValidationException.
  • Internal classes use Ensure library to validate input. Ensure library throws .Net Argument*Exception.
  • Exceptions from dependent libraries like fo-dicom are caught and wrapped in exception inherited from DicomServerException.
  • Exceptions from dependent services libraries like Azure storage blob are caught and wrapped in exception inherited from DicomServerException.

The Dicom server code follows below pattern for handling exceptions

  • All DicomServerExceptions are handled in middleware ExceptionHandlingMiddleware. These exceptions are mapped to the right status code and response body.
  • All unexpected exceptions are logged and mapped to 500 server error.