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fix: GenAI Client(evals) - Add datetime and bytes serialization to _json_serializer #6389

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Merged
copybara-service merged 1 commit into from
Mar 6, 2026
Merged

fix: GenAI Client(evals) - Add datetime and bytes serialization to _json_serializer #6389

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5 changes: 5 additions & 0 deletions vertexai/_genai/_evals_visualization.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
"""Visualization utilities for GenAI Evaluation SDK."""

import base64
import datetime
import html
import json
import logging
Expand Down Expand Up @@ -44,6 +45,10 @@ def _pydantic_serializer(obj: Any) -> Any:
"""Custom serializer for Pydantic models."""
if hasattr(obj, "model_dump"):
return obj.model_dump(mode="json")
if isinstance(obj, datetime.datetime):
return obj.isoformat()
if isinstance(obj, bytes):
return base64.b64encode(obj).decode("utf-8")
raise TypeError(f"Object of type {obj.__class__.__name__} is not JSON serializable")


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