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https://github.com/bytedance/deer-flow.git
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hataa
094296440f
ViewImageMiddleware persists full base64 image payloads in hide_from_ui human messages inside checkpoints. All REST endpoints that returned serialize_channel_values(channel_values) sent these multi-megabyte payloads to the frontend, freezing the UI on threads with images. Add strip_data_url_image_blocks() to remove data:-scheme image_url content blocks from hide_from_ui messages, and serialize_channel_values_for_api() as a convenience wrapper used by all six affected call sites across threads, runs, and thread_runs routers. SSE streaming is unaffected (still uses serialize_channel_values). Fixes #3496
328 lines
9.7 KiB
Python
328 lines
9.7 KiB
Python
"""Tests for deerflow.runtime.serialization."""
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from __future__ import annotations
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class _FakePydanticV2:
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"""Object with model_dump (Pydantic v2)."""
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def model_dump(self):
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return {"key": "v2"}
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class _FakePydanticV1:
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"""Object with dict (Pydantic v1)."""
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def dict(self):
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return {"key": "v1"}
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class _Unprintable:
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"""Object whose str() raises."""
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def __str__(self):
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raise RuntimeError("no str")
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def __repr__(self):
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return "<Unprintable>"
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def test_serialize_none():
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from deerflow.runtime.serialization import serialize_lc_object
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assert serialize_lc_object(None) is None
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def test_serialize_primitives():
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from deerflow.runtime.serialization import serialize_lc_object
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assert serialize_lc_object("hello") == "hello"
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assert serialize_lc_object(42) == 42
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assert serialize_lc_object(3.14) == 3.14
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assert serialize_lc_object(True) is True
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def test_serialize_dict():
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from deerflow.runtime.serialization import serialize_lc_object
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obj = {"a": _FakePydanticV2(), "b": [1, "two"]}
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result = serialize_lc_object(obj)
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assert result == {"a": {"key": "v2"}, "b": [1, "two"]}
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def test_serialize_list():
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from deerflow.runtime.serialization import serialize_lc_object
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result = serialize_lc_object([_FakePydanticV1(), 1])
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assert result == [{"key": "v1"}, 1]
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def test_serialize_tuple():
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from deerflow.runtime.serialization import serialize_lc_object
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result = serialize_lc_object((_FakePydanticV2(),))
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assert result == [{"key": "v2"}]
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def test_serialize_pydantic_v2():
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from deerflow.runtime.serialization import serialize_lc_object
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assert serialize_lc_object(_FakePydanticV2()) == {"key": "v2"}
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def test_serialize_pydantic_v1():
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from deerflow.runtime.serialization import serialize_lc_object
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assert serialize_lc_object(_FakePydanticV1()) == {"key": "v1"}
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def test_serialize_fallback_str():
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from deerflow.runtime.serialization import serialize_lc_object
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result = serialize_lc_object(object())
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assert isinstance(result, str)
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def test_serialize_fallback_repr():
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from deerflow.runtime.serialization import serialize_lc_object
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assert serialize_lc_object(_Unprintable()) == "<Unprintable>"
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def test_serialize_channel_values_strips_pregel_keys():
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from deerflow.runtime.serialization import serialize_channel_values
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raw = {
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"messages": ["hello"],
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"__pregel_tasks": "internal",
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"__pregel_resuming": True,
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"__interrupt__": "stop",
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"title": "Test",
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}
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result = serialize_channel_values(raw)
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assert "messages" in result
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assert "title" in result
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assert "__pregel_tasks" not in result
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assert "__pregel_resuming" not in result
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assert "__interrupt__" not in result
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def test_serialize_channel_values_serializes_objects():
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from deerflow.runtime.serialization import serialize_channel_values
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result = serialize_channel_values({"obj": _FakePydanticV2()})
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assert result == {"obj": {"key": "v2"}}
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def test_serialize_messages_tuple():
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from deerflow.runtime.serialization import serialize_messages_tuple
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chunk = _FakePydanticV2()
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metadata = {"langgraph_node": "agent"}
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result = serialize_messages_tuple((chunk, metadata))
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assert result == [{"key": "v2"}, {"langgraph_node": "agent"}]
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def test_serialize_messages_tuple_non_dict_metadata():
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from deerflow.runtime.serialization import serialize_messages_tuple
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result = serialize_messages_tuple((_FakePydanticV2(), "not-a-dict"))
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assert result == [{"key": "v2"}, {}]
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def test_serialize_messages_tuple_fallback():
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from deerflow.runtime.serialization import serialize_messages_tuple
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result = serialize_messages_tuple("not-a-tuple")
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assert result == "not-a-tuple"
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def test_serialize_dispatcher_messages_mode():
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from deerflow.runtime.serialization import serialize
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chunk = _FakePydanticV2()
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result = serialize((chunk, {"node": "x"}), mode="messages")
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assert result == [{"key": "v2"}, {"node": "x"}]
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def test_serialize_dispatcher_values_mode():
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from deerflow.runtime.serialization import serialize
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result = serialize({"msg": "hi", "__pregel_tasks": "x"}, mode="values")
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assert result == {"msg": "hi"}
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def test_serialize_dispatcher_default_mode():
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from deerflow.runtime.serialization import serialize
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result = serialize(_FakePydanticV1())
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assert result == {"key": "v1"}
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# ── strip_data_url_image_blocks ──────────────────────────────────────────────
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def _make_msg(
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content,
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*,
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hide_from_ui=False,
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msg_type="human",
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):
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"""Build a serialised-style message dict."""
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msg = {"type": msg_type, "content": content}
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if hide_from_ui:
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msg["additional_kwargs"] = {"hide_from_ui": True}
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return msg
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def test_strip_data_url_removes_base64_from_hidden_messages():
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from deerflow.runtime.serialization import strip_data_url_image_blocks
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messages = [
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_make_msg(
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[
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{"type": "text", "text": "Here are the images:"},
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{
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"type": "image_url",
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"image_url": {"url": "data:image/png;base64,iVBOR..."},
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},
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{"type": "text", "text": "- file.jpg (image/jpeg)"},
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{
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"type": "image_url",
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"image_url": {"url": "data:image/jpeg;base64,/9j/..."},
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},
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],
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hide_from_ui=True,
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),
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]
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result = strip_data_url_image_blocks(messages)
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assert len(result) == 1
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content = result[0]["content"]
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# Only text blocks remain
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assert content == [
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{"type": "text", "text": "Here are the images:"},
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{"type": "text", "text": "- file.jpg (image/jpeg)"},
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]
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def test_strip_data_url_preserves_non_hidden_messages():
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from deerflow.runtime.serialization import strip_data_url_image_blocks
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messages = [
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_make_msg(
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[
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{"type": "text", "text": "Check this out"},
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{
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"type": "image_url",
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"image_url": {"url": "data:image/png;base64,iVBOR..."},
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},
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],
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hide_from_ui=False,
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),
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]
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result = strip_data_url_image_blocks(messages)
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assert result == messages
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def test_strip_data_url_preserves_https_image_urls():
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from deerflow.runtime.serialization import strip_data_url_image_blocks
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messages = [
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_make_msg(
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[
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{"type": "text", "text": "See image"},
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{
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"type": "image_url",
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"image_url": {"url": "https://example.com/img.png"},
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},
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],
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hide_from_ui=True,
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),
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]
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result = strip_data_url_image_blocks(messages)
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assert result == messages
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def test_strip_data_url_handles_string_content():
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from deerflow.runtime.serialization import strip_data_url_image_blocks
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messages = [
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_make_msg("plain text content", hide_from_ui=True),
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]
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result = strip_data_url_image_blocks(messages)
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assert result == messages
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def test_strip_data_url_handles_non_dict_messages():
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from deerflow.runtime.serialization import strip_data_url_image_blocks
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result = strip_data_url_image_blocks(["a_string", None, 42])
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assert result == ["a_string", None, 42]
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def test_strip_data_url_mixed_messages():
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"""A realistic mix: normal user message + hidden image injection + AI reply."""
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from deerflow.runtime.serialization import strip_data_url_image_blocks
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messages = [
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_make_msg("Please analyze this image", hide_from_ui=False),
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_make_msg(
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[
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{"type": "text", "text": "Here are the images:"},
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{
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"type": "image_url",
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"image_url": {"url": "data:image/png;base64,AABBCCDD"},
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},
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],
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hide_from_ui=True,
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),
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_make_msg("I can see a landscape", msg_type="ai"),
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]
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result = strip_data_url_image_blocks(messages)
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assert len(result) == 3
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# First message untouched
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assert result[0]["content"] == "Please analyze this image"
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# Hidden message: image_url stripped, text kept
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assert result[1]["content"] == [{"type": "text", "text": "Here are the images:"}]
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# AI message untouched
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assert result[2]["content"] == "I can see a landscape"
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def test_serialize_channel_values_for_api_strips_base64():
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from deerflow.runtime.serialization import serialize_channel_values_for_api
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channel_values = {
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"messages": [
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{
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"type": "human",
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"content": "hello",
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},
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{
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"type": "human",
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"content": [
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{"type": "text", "text": "images:"},
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{
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"type": "image_url",
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"image_url": {"url": "data:image/png;base64,BIGDATA"},
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},
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],
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"additional_kwargs": {"hide_from_ui": True},
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},
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],
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"title": "My thread",
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}
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result = serialize_channel_values_for_api(channel_values)
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assert result["title"] == "My thread"
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assert len(result["messages"]) == 2
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assert result["messages"][0]["content"] == "hello"
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# base64 block stripped, text block kept
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assert result["messages"][1]["content"] == [{"type": "text", "text": "images:"}]
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def test_serialize_channel_values_for_api_no_messages():
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"""When channel_values has no messages key, returns without error."""
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from deerflow.runtime.serialization import serialize_channel_values_for_api
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result = serialize_channel_values_for_api({"title": "empty"})
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assert result == {"title": "empty"}
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