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\Fix tool_calls message merge (#14613)

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pull/14677/head
Nuno Campos 10 months ago committed by GitHub
parent 405d111da6
commit a16f4a318f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 240 additions and 2 deletions
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17
libs/core/langchain_core/messages/base.py
Unescape Escape View File

@ -98,8 +98,12 @@ class BaseMessageChunk(BaseMessage):
merged[k] = v
elif merged[k] is None and v:
merged[k] = v
elif v is None:
continue
elif merged[k] == v:
continue
elif type(merged[k]) != type(v):
raise ValueError(
raise TypeError(
f'additional_kwargs["{k}"] already exists in this message,'
" but with a different type."
)
@ -107,8 +111,17 @@ class BaseMessageChunk(BaseMessage):
merged[k] += v
elif isinstance(merged[k], dict):
merged[k] = self._merge_kwargs_dict(merged[k], v)
elif isinstance(merged[k], list):
merged[k] = merged[k].copy()
for i, e in enumerate(v):
if isinstance(e, dict) and isinstance(e.get("index"), int):
i = e["index"]
if i < len(merged[k]):
merged[k][i] = self._merge_kwargs_dict(merged[k][i], e)
else:
merged[k] = merged[k] + [e]
else:
raise ValueError(
raise TypeError(
f"Additional kwargs key {k} already exists in this message."
)
return merged

225
libs/core/tests/unit_tests/test_messages.py
Unescape Escape View File

@ -1,4 +1,5 @@
import unittest
from typing import List
import pytest
@ -203,3 +204,227 @@ def test_message_chunk_to_message() -> None:
assert message_chunk_to_message(
FunctionMessageChunk(name="hello", content="I am")
) == FunctionMessage(name="hello", content="I am")
def test_tool_calls_merge() -> None:
chunks: List[dict] = [
dict(content=""),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 0,
"id": "call_CwGAsESnXehQEjiAIWzinlva",
"function": {"arguments": "", "name": "person"},
"type": "function",
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 0,
"id": None,
"function": {"arguments": '{"na', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 0,
"id": None,
"function": {"arguments": 'me": ', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 0,
"id": None,
"function": {"arguments": '"jane"', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 0,
"id": None,
"function": {"arguments": ', "a', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 0,
"id": None,
"function": {"arguments": 'ge": ', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 0,
"id": None,
"function": {"arguments": "2}", "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 1,
"id": "call_zXSIylHvc5x3JUAPcHZR5GZI",
"function": {"arguments": "", "name": "person"},
"type": "function",
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 1,
"id": None,
"function": {"arguments": '{"na', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 1,
"id": None,
"function": {"arguments": 'me": ', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 1,
"id": None,
"function": {"arguments": '"bob",', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 1,
"id": None,
"function": {"arguments": ' "ag', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 1,
"id": None,
"function": {"arguments": 'e": 3', "name": None},
"type": None,
}
]
},
),
dict(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 1,
"id": None,
"function": {"arguments": "}", "name": None},
"type": None,
}
]
},
),
dict(content=""),
]
final = None
for chunk in chunks:
msg = AIMessageChunk(**chunk)
if final is None:
final = msg
else:
final = final + msg
assert final == AIMessageChunk(
content="",
additional_kwargs={
"tool_calls": [
{
"index": 0,
"id": "call_CwGAsESnXehQEjiAIWzinlva",
"function": {
"arguments": '{"name": "jane", "age": 2}',
"name": "person",
},
"type": "function",
},
{
"index": 1,
"id": "call_zXSIylHvc5x3JUAPcHZR5GZI",
"function": {
"arguments": '{"name": "bob", "age": 3}',
"name": "person",
},
"type": "function",
},
]
},
)

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