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c419a9b 2adc70d c419a9b 2adc70d 6c44be5 2adc70d c419a9b 2adc70d c419a9b 6c44be5 c419a9b 2adc70d 6c44be5 c419a9b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | from langgraph.graph import StateGraph
from langgraph.prebuilt import tools_condition
from src.langgraph_agentic_ai.state.state import State
from langgraph.graph import START,END
from src.langgraph_agentic_ai.nodes.basic_chatbot_node import BasicChatbotNode
from src.langgraph_agentic_ai.tools.search_tool import get_tools,create_tool_node
from langgraph.prebuilt import tools_condition,ToolNode
from src.langgraph_agentic_ai.nodes.chatbot_with_tool_node import chatbotwithToolNode
from src.langgraph_agentic_ai.nodes.ai_news_node import AiNewsNode
class GraphBuilder:
def __init__(self,model):
self.llm=model
# Provide the required state schema to StateGraph constructor
self.graph_builder=StateGraph(State)
def basic_chatbot_build_graph(self):
"""
builds a basic chatbot using Langgraph
This method initializes a chatbot node using the 'BasicChatbotNode' class
and integrates it into the graph. The chatbot node is set as both the
entry and exit point of the graph
"""
self.basic_chatbot_node=BasicChatbotNode(self.llm)
self.graph_builder.add_node("chatbot",self.basic_chatbot_node.process)
self .graph_builder.add_edge(START,"chatbot")
self .graph_builder.add_edge("chatbot",END)
def chatbot_with_tools_build_graph(self):
"""
Builds an advanced chatbot graph with tool integration.
This method creates a chatbot graph that includes both a chatbot node
and a tool node. It defines tools, initializes the chatbot with tool
capabilities, and sets up conditional and direct edges between nodes.
The chatbot node is set as the entry point.
"""
## Define the tool and tool node
tools=get_tools()
tool_node=create_tool_node(tools)
## Define the LLM
llm=self.llm
## Define the chatbot node
obj_chatbot_with_node=chatbotwithToolNode(llm)
chatbot_node=obj_chatbot_with_node.create_chatbot(tools)
## Add nodes
self.graph_builder.add_node("chatbot",chatbot_node)
self.graph_builder.add_node("tools",tool_node)
self.graph_builder.add_edge(START,"chatbot")
self.graph_builder.add_conditional_edges("chatbot",tools_condition)
self.graph_builder.add_edge("tools","chatbot")
self.graph_builder.add_edge("chatbot",END)
def ai_news_builder_graph(self):
ai_news_node=AiNewsNode(self.llm)
self.graph_builder.add_node("fetch_news",ai_news_node.fetch_news)
self.graph_builder.add_node("summarize_news",ai_news_node.summarize_news)
self.graph_builder.add_node("save_result",ai_news_node.save_result)
self.graph_builder.set_entry_point("fetch_news")
self.graph_builder.add_edge("fetch_news","summarize_news")
self.graph_builder.add_edge("summarize_news","save_result")
self.graph_builder.add_edge("save_result",END)
def setup_graph(self,usecase:str):
"""
Sets up the graph for the selected use case
"""
if usecase == "Basic Chatbot":
self.basic_chatbot_build_graph()
if usecase == "Chatbot with WebSearch":
self.chatbot_with_tools_build_graph()
if usecase == "AI News":
self.ai_news_builder_graph()
return self.graph_builder.compile()
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