initial commit

.env

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+USER_AGENT='myagent'
+GROQ_API_KEY="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"
+PINECONE_API_KEY="ca8e6a33-7355-453f-ad4b-80c8a1c6a9c7"
+SECRET_KEY="b0*1x^y@9$)w%v+k=p!8xp@4bkt37s&b8+uf%1=mh+v1=@ybsh"

Dockerfile

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+# Read the doc: https://huggingface.co/docs/hub/spaces-sdks-docker
+# you will also find guides on how best to write your Dockerfile
+
+FROM python:3.9
+
+RUN useradd -m -u 1000 user
+USER user
+ENV PATH="/home/user/.local/bin:$PATH"
+
+WORKDIR /app
+
+COPY --chown=user ./requirements.txt requirements.txt
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+
+COPY --chown=user . /app
+CMD ["gunicorn", "-b", "0.0.0.0:7860" , "main:app"]

app.py

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+import os
+from dotenv import load_dotenv
+load_dotenv(".env")
+
+os.environ['USER_AGENT'] = os.getenv("USER_AGENT")
+os.environ["GROQ_API_KEY"] = os.getenv("GROQ_API_KEY")
+os.environ["TOKENIZERS_PARALLELISM"]='true'
+
+from langchain.chains import create_history_aware_retriever, create_retrieval_chain
+from langchain.chains.combine_documents import create_stuff_documents_chain
+from langchain_community.chat_message_histories import ChatMessageHistory
+from langchain_community.document_loaders import WebBaseLoader
+from langchain_core.chat_history import BaseChatMessageHistory
+from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
+from langchain_core.runnables.history import RunnableWithMessageHistory
+
+from pinecone import Pinecone
+from pinecone_text.sparse import BM25Encoder
+
+from langchain_huggingface import HuggingFaceEmbeddings
+from langchain_community.retrievers import PineconeHybridSearchRetriever
+
+from langchain_groq import ChatGroq
+
+from flask import Flask, request
+from flask_cors import CORS
+from flask_limiter import Limiter
+from flask_limiter.util import get_remote_address
+from flask_socketio import SocketIO, emit
+
+app = Flask(__name__)
+CORS(app)
+socketio = SocketIO(app, cors_allowed_origins="*")
+app.config['SESSION_COOKIE_SECURE'] = True  # Use HTTPS
+app.config['SESSION_COOKIE_HTTPONLY'] = True
+app.config['SESSION_COOKIE_SAMESITE'] = 'Lax'
+app.config['SECRET_KEY'] = os.getenv('SECRET_KEY')
+
+try:
+    pc = Pinecone(api_key=os.getenv("PINECONE_API_KEY"))
+    index_name = "traveler-demo-website-vectorstore"
+    # connect to index
+    pinecone_index = pc.Index(index_name)
+except:
+    pc = Pinecone(api_key=os.getenv("PINECONE_API_KEY"))
+    index_name = "traveler-demo-website-vectorstore"
+    # connect to index
+    pinecone_index = pc.Index(index_name)
+
+bm25 = BM25Encoder().load("bm25_traveler_website.json")
+
+embed_model = HuggingFaceEmbeddings(model_name="Alibaba-NLP/gte-large-en-v1.5", model_kwargs={"trust_remote_code":True})
+
+retriever = PineconeHybridSearchRetriever(
+    embeddings=embed_model, 
+    sparse_encoder=bm25, 
+    index=pinecone_index, 
+    top_k=20, 
+    alpha=0.5, 
+)
+
+llm = ChatGroq(model="llama-3.1-70b-versatile", temperature=0.1, max_tokens=1024, max_retries=2)
+
+### Contextualize question ###
+contextualize_q_system_prompt = """Given a chat history and the latest user question \
+which might reference context in the chat history, formulate a standalone question \
+which can be understood without the chat history. Do NOT answer the question, \
+just reformulate it if needed and otherwise return it as is.
+"""
+contextualize_q_prompt = ChatPromptTemplate.from_messages(
+    [
+        ("system", contextualize_q_system_prompt),
+        MessagesPlaceholder("chat_history"),
+        ("human", "{input}")
+    ]
+)
+
+history_aware_retriever = create_history_aware_retriever(
+    llm, retriever, contextualize_q_prompt
+)
+
+
+qa_system_prompt = """You are a highly skilled information retrieval assistant. Use the following pieces of retrieved context to answer the question. \
+Provide links to sources provided in the answer. \
+If you don't know the answer, just say that you don't know. \
+Do not give extra long answers. \
+When responding to queries, your responses should be comprehensive and well-organized. For each response: \
+
+    1. Provide Clear Answers \
+
+    2. Include Detailed References: \
+        - Include links to sources and any links or sites where there is a mentioned in the answer.
+        - Links to Sources: Provide URLs to credible sources where users can verify the information or explore further. \
+        - Downloadable Materials: Include links to any relevant downloadable resources if applicable. \
+        - Reference Sites: Mention specific websites or platforms that offer additional information. \
+
+    3. Formatting for Readability: \
+        - Bullet Points or Lists: Where applicable, use bullet points or numbered lists to present information clearly. \
+        - Emphasize Important Information: Use bold or italics to highlight key details. \
+
+    4. Organize Content Logically \
+
+Do not include anything about context in the answer. \
+
+{context}
+"""
+qa_prompt = ChatPromptTemplate.from_messages(
+    [
+        ("system", qa_system_prompt),
+        MessagesPlaceholder("chat_history"),
+        ("human", "{input}")
+    ]
+)
+question_answer_chain = create_stuff_documents_chain(llm, qa_prompt)
+
+rag_chain = create_retrieval_chain(history_aware_retriever, question_answer_chain)
+
+### Statefully manage chat history ###
+store = {}
+
+def clean_temporary_data():
+    store = {}
+
+def get_session_history(session_id: str) -> BaseChatMessageHistory:
+    if session_id not in store:
+        store[session_id] = ChatMessageHistory()
+    return store[session_id]
+
+
+conversational_rag_chain = RunnableWithMessageHistory(
+    rag_chain,
+    get_session_history,
+    input_messages_key="input",
+    history_messages_key="chat_history",
+    output_messages_key="answer",
+)
+
+# Stream response to client
+@socketio.on('message')
+def handle_message(data):
+    question = data.get('question')
+    session_id = data.get('session_id', 'abc123')
+    chain = conversational_rag_chain.pick("answer")
+    
+    try:
+        for chunk in conversational_rag_chain.stream(
+                {"input": question},
+                config={
+                    "configurable": {"session_id": "abc123"}
+                },
+            ):
+                emit('response', chunk, room=request.sid)
+    except:
+        for chunk in conversational_rag_chain.stream(
+                {"input": question},
+                config={
+                    "configurable": {"session_id": "abc123"}
+                },
+            ):
+                emit('response', chunk, room=request.sid)
+
+if __name__ == '__main__': 
+    socketio.run(app, debug=True)

requirements.txt

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+aiohttp==3.9.5
+aiosignal==1.3.1
+annotated-types==0.7.0
+anyio==4.4.0
+async-timeout==4.0.3
+attrs==23.2.0
+bidict==0.23.1
+blinker==1.8.2
+certifi==2024.7.4
+charset-normalizer==3.3.2
+click==8.1.7
+dataclasses-json==0.6.7
+distro==1.9.0
+exceptiongroup==1.2.2
+filelock==3.15.4
+flask==3.0.3
+Flask-Cors==4.0.1
+Flask-SocketIO==5.3.6
+frozenlist==1.4.1
+fsspec==2024.6.1
+greenlet==3.0.3
+groq==0.9.0
+h11==0.14.0
+httpcore==1.0.5
+httpx==0.27.0
+huggingface-hub==0.24.2
+idna==3.7
+importlib-metadata==8.2.0
+itsdangerous==2.2.0
+jinja2==3.1.4
+joblib==1.4.2
+jsonpatch==1.33
+jsonpointer==3.0.0
+langchain==0.2.11
+langchain-community==0.2.10
+langchain-core==0.2.24
+langchain-groq==0.1.6
+langchain-huggingface==0.0.3
+langchain-text-splitters==0.2.2
+langsmith==0.1.93
+MarkupSafe==2.1.5
+marshmallow==3.21.3
+mmh3==4.1.0
+mpmath==1.3.0
+multidict==6.0.5
+mypy-extensions==1.0.0
+networkx==3.1
+nltk==3.8.1
+numpy==1.24.4
+nvidia-cublas-cu12==12.1.3.1
+nvidia-cuda-cupti-cu12==12.1.105
+nvidia-cuda-nvrtc-cu12==12.1.105
+nvidia-cuda-runtime-cu12==12.1.105
+nvidia-cudnn-cu12==9.1.0.70
+nvidia-cufft-cu12==11.0.2.54
+nvidia-curand-cu12==10.3.2.106
+nvidia-cusolver-cu12==11.4.5.107
+nvidia-cusparse-cu12==12.1.0.106
+nvidia-nccl-cu12==2.20.5
+nvidia-nvjitlink-cu12==12.5.82
+nvidia-nvtx-cu12==12.1.105
+orjson==3.10.6
+packaging==24.1
+pillow==10.4.0
+pinecone==4.0.0
+pinecone-text==0.9.0
+pydantic==2.8.2
+pydantic-core==2.20.1
+python-dotenv==1.0.1
+python-engineio==4.9.1
+python-socketio==5.11.3
+PyYAML==6.0.1
+regex==2024.7.24
+requests==2.32.3
+safetensors==0.4.3
+scikit-learn==1.3.2
+scipy==1.10.1
+sentence-transformers==3.0.1
+simple-websocket==1.0.0
+sniffio==1.3.1
+SQLAlchemy==2.0.31
+sympy==1.13.1
+tenacity==8.5.0
+threadpoolctl==3.5.0
+tokenizers==0.19.1
+torch==2.4.0
+tqdm==4.66.4
+transformers==4.43.3
+triton==3.0.0
+types-requests==2.32.0.20240712
+typing-extensions==4.12.2
+typing-inspect==0.9.0
+urllib3==2.2.2
+werkzeug==3.0.3
+wget==3.2
+wsproto==1.2.0
+yarl==1.9.4
+zipp==3.19.2
+gunicorn