flora-errors

Error definitions for Flora.

This module exposes error classes for different types of errors to be able to determine whether an error should be displayed to the client (such as AuthenticationError) or not (internal errors).

To be able to pass through the error type to clients, a code property is also set. The default error codes are listed below.

Error classes

RequestError

• Generic request error (the user made an invalid request)
• HTTP status code 400, the message will be displayed
• Error code is ERR_REQUEST_ERROR

AuthenticationError

• The user is either not authenticated, or the credentials are wrong
• HTTP status code 401
• Error code is ERR_AUTHENTICATION_ERROR

AuthorizationError

• The user may be authenticated, but is not authorized for the requested action
• HTTP status code 403
• Error code is ERR_AUTHORIZATION_ERROR

NotFoundError

• Either the requested resource could not be found, or a specific entity of the resource.
• HTTP status code 404, message will be displayed
• Error code is ERR_NOT_FOUND

GoneError

• The requested resource is gone, e.g. was deleted
• HTTP status code 410, message will be displayed
• Error code is ERR_GONE

ImplementationError

• There is a problem with the implementation, e.g. of one of the resources. This should not happen
• HTTP status code 500
• Error code is ERR_IMPLEMENTATION_ERROR

DataError

• There is a problem with the data retrieved by one of the data sources
• HTTP status code 500
• Error code is ERR_DATA_ERROR

ConnectionError

• There is a problem with the connection to a data source. May work on retry (e.g. temporary network problems)
• HTTP status code 503.
• Error code is ERR_CONNECTION_ERROR

ValidationError

• There is a problem validating input data. This is a special case of RequestError
• HTTP status code 400
• Error code is ERR_VALIDATION_ERROR
• Second parameter of constructor will be added as additional validation property.

License

MIT