fix: ALL_TOOLS_NAMES constant reduces reruns

src/backend/langflow/interface/listing.py

@@ -1,5 +1,4 @@
 from langchain import agents, chains, prompts
-from langchain.agents.load_tools import get_all_tool_names
 
 from langflow.custom import customs
 from langflow.interface.custom_lists import (
@@ -8,6 +7,7 @@ from langflow.interface.custom_lists import (
 )
 from langflow.settings import settings
 from langflow.utils import util
+from langflow.utils.constants import ALL_TOOLS_NAMES
 
 
 def get_type_dict():
@@ -51,7 +51,7 @@ def list_tools():
 
     tools = []
 
-    for tool in get_all_tool_names():
+    for tool in list(ALL_TOOLS_NAMES):
         tool_params = util.get_tool_params(util.get_tool_by_name(tool))
         if tool_params and tool_params["name"] in settings.tools or settings.dev:
             tools.append(tool_params["name"])

src/backend/langflow/interface/signature.py

@@ -6,7 +6,6 @@ from langchain.agents.load_tools import (
     _EXTRA_LLM_TOOLS,
     _EXTRA_OPTIONAL_TOOLS,
     _LLM_TOOLS,
-    get_all_tool_names,
 )
 
 from langflow.custom import customs
@@ -16,7 +15,7 @@ from langflow.interface.custom_lists import (
 )
 from langflow.node.template import Field, Template
 from langflow.utils import util
-from langflow.utils.constants import CUSTOM_TOOLS
+from langflow.utils.constants import ALL_TOOLS_NAMES, CUSTOM_TOOLS
 
 
 def get_signature(name: str, object_type: str):
@@ -86,8 +85,7 @@ def get_tool_signature(name: str):
     NODE_INPUTS = ["llm", "func"]
     base_classes = ["Tool"]
     all_tools = {}
-    all_tool_names: list[str] = get_all_tool_names() + list(CUSTOM_TOOLS.keys())
-    for tool in all_tool_names:
+    for tool in ALL_TOOLS_NAMES:
         if tool_params := util.get_tool_params(util.get_tool_by_name(tool)):
             tool_name = tool_params.get("name") or str(tool)
             all_tools[tool_name] = {"type": tool, "params": tool_params}

src/backend/langflow/utils/constants.py

@@ -1,5 +1,6 @@
 from langchain.agents import Tool
 from langflow.interface.custom_types import PythonFunction
+from langchain.agents.load_tools import get_all_tool_names
 
 OPENAI_MODELS = [
     "text-davinci-003",
@@ -16,3 +17,5 @@ DEFAULT_PYTHON_FUNCTION = """
 def python_function(text: str) -> str:
     return text
 """
+
+ALL_TOOLS_NAMES = set(get_all_tool_names() + list(CUSTOM_TOOLS.keys()))

src/backend/langflow/utils/graph.py

@@ -2,7 +2,6 @@
 # Insights:
 #   - Defer prompts building to the last moment or when they have all the tools
 #   - Build each inner agent first, then build the outer agent
-from langchain.agents.load_tools import get_all_tool_names
 
 from copy import deepcopy
 import types
@@ -10,6 +9,7 @@ from typing import Any, Dict, List, Optional, Union
 from langflow.interface import loading
 from langflow.utils import payload, util
 from langflow.interface.listing import ALL_TYPES_DICT
+from langflow.utils.constants import ALL_TOOLS_NAMES
 
 
 class Node:
@@ -351,7 +351,6 @@ class Graph:
 
     def _build_nodes(self) -> List[Node]:
         nodes = []
-        all_tool_names = set(get_all_tool_names())
         for node in self._nodes:
             node_data = node["data"]
             node_type = node_data["type"]
@@ -363,7 +362,7 @@ class Graph:
                 nodes.append(AgentNode(node))
             elif "chain" in node_type.lower():
                 nodes.append(ChainNode(node))
-            elif "tool" in node_type.lower() or node_lc_type in all_tool_names:
+            elif "tool" in node_type.lower() or node_lc_type in ALL_TOOLS_NAMES:
                 nodes.append(ToolNode(node))
             else:
                 nodes.append(Node(node))
@@ -377,32 +376,3 @@ class Graph:
         if node_type in node_types:
             children.append(node)
         return children
-
-    def _build_agent(self, agent_node: Node) -> None:
-        # Identify the ZeroShotPrompt node and any inner ZeroShotAgent nodes
-        zero_shot_prompt_node = None
-        inner_agent_nodes = []
-        for edge in agent_node.edges:
-            if edge.source == agent_node:
-                source_node = edge.target
-                if (
-                    isinstance(source_node, DeferredNode)
-                    and source_node.node_type == "ZeroShotPrompt"
-                ):
-                    zero_shot_prompt_node = source_node
-                elif source_node.node_type == "ZeroShotAgent":
-                    inner_agent_nodes.append(source_node)
-
-        # First, build any inner ZeroShotAgent nodes
-        for inner_agent_node in inner_agent_nodes:
-            self._build_agent(inner_agent_node)
-
-        # Build the ZeroShotAgent node itself
-        agent_built = agent_node.build()
-
-        if zero_shot_prompt_node:
-            # Set the tools parameter in the ZeroShotPrompt node
-            zero_shot_prompt_node.params["tools"] = agent_built.tools
-
-            # Build the ZeroShotPrompt node
-            zero_shot_prompt_node.build()