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Fix for issue #51: KeyError for ToolMessage #73

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Fix for issue #51: KeyError for ToolMessage #73

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6d6f3eb
fix: add missing parameters to serialize ToolMessage
Manuele99 Apr 24, 2025
7583fba
Bump version to 0.2.1
Manuele99 Apr 24, 2025
133b430
fix lint: specify type for common_data_to_store object
Manuele99 May 19, 2025
060143c
Merge branch 'fix-tool-call-id'
Manuele99 Jul 4, 2025
360eafc
Fix linting
Manuele99 Jul 4, 2025
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11 changes: 8 additions & 3 deletions libs/redis/langchain_redis/chat_message_history.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
from typing import Any, Dict, List, Optional

from langchain_core.chat_history import BaseChatMessageHistory
from langchain_core.messages import BaseMessage, messages_from_dict
from langchain_core.messages import BaseMessage, ToolMessage, messages_from_dict
from redis import Redis
from redis.exceptions import ResponseError
from redisvl.index import SearchIndex # type: ignore
Expand Down Expand Up @@ -267,7 +267,7 @@ def add_message(self, message: BaseMessage) -> None:

timestamp = datetime.now().timestamp()
message_id = str(ULID())
redis_msg = {
common_data_to_store: dict[str, Any] = {
"type": message.type,
"message_id": message_id,
"data": {
Expand All @@ -278,10 +278,15 @@ def add_message(self, message: BaseMessage) -> None:
"session_id": self.session_id,
"timestamp": timestamp,
}
if isinstance(message, ToolMessage):
common_data_to_store["data"]["tool_call_id"] = message.tool_call_id
common_data_to_store["data"]["status"] = message.status

# Use RedisVL to load the data
self.index.load(
data=[redis_msg], keys=[self._message_key(message_id)], ttl=self.ttl
data=[common_data_to_store],
keys=[self._message_key(message_id)],
ttl=self.ttl,
)

def clear(self) -> None:
Expand Down