assistants: fallback type in discriminated unions #1615
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kristapratico
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Aug 8, 2024
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| type_ = field.annotation | ||
| if field.metadata: | ||
| type_ = wrap_in_annotated_type(field) | ||
| else: | ||
| type_ = field.annotation |
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In the case where the response data for a union field doesn't conform to expected (i.e. we fail the validate_type call), we seem to lose the metadata (which has the discriminator info) when constructing the field. This makes the code construct the first type present in the union instead of creating the actual known type. Test case illustrating this here
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Changes being requested
Provides a well-defined behavior / fallback type for response data that doesn't fit any known type in a discriminated union. Aims to handle more gracefully the scenario in which a client may be using a version of the library that does not yet know about a tool type / its response.
Additional context & links
#1574