Report device actions as dispatched and preserve full failure details. Route Flash through McpActionExecutor and use ToolFailure across helper tools and agent loops instead of inferring failure from response text. Require model-provided descriptions for coordinate targets. Keep observed element metadata separate from those descriptions in safety checks, visual summaries, history, and frontend labels. Add Gemini Interactions API video analysis with configurable processing mode, chunk size, and timeouts. Centralize Google provider capabilities and token usage normalization, and update google-genai to 2.22.0. Preserve system instructions on follow-up interactions, replan pending chunks when falling back to static processing, and reject unanswered native video and audio segments instead of caching placeholder results. Keep helper-tool failure status intact through history tools and committee calls. Validation: 1,762 Python unit tests passed (3 skipped), 40 frontend formatter tests passed, and the production UI build completed. Ruff lint, formatting, the quality ratchet, and git diff checks passed.
57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
# Copyright 2026 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Typed failures for text-returning helper tools.
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Tools return ``ToolFailure`` on failure; callers use ``is_tool_failure`` to
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check the result. The str subclass keeps results compatible with text consumers
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without treating words such as "Error" in tool output as a failure signal.
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Pydantic converts str subclasses to plain strings in ``ToolMessage.content``
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and ``ToolExecutionResult.text_summary``. Check the raw result before wrapping
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it and pass ``status="error"`` to preserve the failure state.
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"""
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from typing import Any
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from langchain_core.messages import ToolMessage
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class ToolFailure(str):
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"""A helper tool's failure report, carried as the text the agent reads."""
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__slots__ = ()
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def is_tool_failure(result: Any) -> bool:
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"""Whether a tool result reports failure.
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True for a ``ToolMessage`` whose ``status`` is ``"error"``, for a
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:class:`ToolFailure` text, and for a content-block list whose text is a
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:class:`ToolFailure`. Plain strings are never failures, whatever they say.
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"""
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if isinstance(result, ToolMessage):
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if result.status == "error":
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return True
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result = result.content
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if isinstance(result, ToolFailure):
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return True
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if isinstance(result, list):
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for block in result:
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if isinstance(block, ToolFailure):
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return True
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if isinstance(block, dict) and isinstance(block.get("text"), ToolFailure):
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return True
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return False
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