rag basic assignment

7_Assignment_RagBasicPdf/.env

+OPENAI_API_KEY=your-api-key-here
+

7_Assignment_RagBasicPdf/app.py

+import streamlit as st
+from utils import load_pdf_chunks, build_faiss_index, get_answer
+import os
+from dotenv import load_dotenv
+
+load_dotenv()
+st.set_page_config(page_title="PDF Q&A Bot", layout="centered")
+st.title("📄 Ask Questions to Your PDF")
+
+uploaded_file = st.file_uploader("Upload a PDF", type="pdf")
+
+if uploaded_file:
+    with open("temp.pdf", "wb") as f:
+        f.write(uploaded_file.read())
+    st.success("PDF uploaded successfully!")
+
+    with st.spinner("Reading and indexing the document..."):
+        chunks = load_pdf_chunks("temp.pdf")
+        faiss_index = build_faiss_index(chunks)
+
+    st.success("Document is ready for questions!")
+
+    query = st.text_input("Ask a question:")
+    if query:
+        with st.spinner("Thinking..."):
+            answer = get_answer(faiss_index, query)
+        st.markdown(f"**Answer:** {answer}")
+

7_Assignment_RagBasicPdf/requirements.txt

+streamlit
+langchain
+openai
+faiss-cpu
+python-dotenv
+PyPDF2
+

7_Assignment_RagBasicPdf/utils.py

+import os
+from langchain_community.document_loaders import PyPDFLoader
+#from langchain.document_loaders import PyPDFLoader
+from langchain.text_splitter import RecursiveCharacterTextSplitter
+from langchain.vectorstores import FAISS
+from langchain.embeddings.openai import OpenAIEmbeddings
+from langchain.chains.question_answering import load_qa_chain
+from langchain.llms import OpenAI
+
+def load_pdf_chunks(pdf_path):
+    loader = PyPDFLoader(pdf_path)
+    docs = loader.load()
+    splitter = RecursiveCharacterTextSplitter(chunk_size=500, chunk_overlap=50)
+    return splitter.split_documents(docs)
+
+def build_faiss_index(chunks):
+    embeddings = OpenAIEmbeddings()
+    return FAISS.from_documents(chunks, embeddings)
+
+def get_answer(faiss_index, query):
+    docs = faiss_index.similarity_search(query, k=3)
+    llm = OpenAI(temperature=0)
+    chain = load_qa_chain(llm, chain_type="stuff")
+    return chain.run(input_documents=docs, question=query)
+

Airflow with 3.0.2 and custom repo for dags

+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+# Basic Airflow cluster configuration for CeleryExecutor with Redis and PostgreSQL.
+#
+# WARNING: This configuration is for local development. Do not use it in a production deployment.
+#
+# This configuration supports basic configuration using environment variables or an .env file
+# The following variables are supported:
+#
+# AIRFLOW_IMAGE_NAME           - Docker image name used to run Airflow.
+#                                Default: apache/airflow:3.0.2
+# AIRFLOW_UID                  - User ID in Airflow containers
+#                                Default: 50000
+# AIRFLOW_PROJ_DIR             - Base path to which all the files will be volumed.
+#                                Default: .
+# Those configurations are useful mostly in case of standalone testing/running Airflow in test/try-out mode
+#
+# _AIRFLOW_WWW_USER_USERNAME   - Username for the administrator account (if requested).
+#                                Default: airflow
+# _AIRFLOW_WWW_USER_PASSWORD   - Password for the administrator account (if requested).
+#                                Default: airflow
+# _PIP_ADDITIONAL_REQUIREMENTS - Additional PIP requirements to add when starting all containers.
+#                                Use this option ONLY for quick checks. Installing requirements at container
+#                                startup is done EVERY TIME the service is started.
+#                                A better way is to build a custom image or extend the official image
+#                                as described in https://airflow.apache.org/docs/docker-stack/build.html.
+#                                Default: ''
+#
+# Feel free to modify this file to suit your needs.
+---
+x-airflow-common:
+  &airflow-common
+  # In order to add custom dependencies or upgrade provider distributions you can use your extended image.
+  # Comment the image line, place your Dockerfile in the directory where you placed the docker-compose.yaml
+  # and uncomment the "build" line below, Then run `docker-compose build` to build the images.
+  image: ${AIRFLOW_IMAGE_NAME:-apache/airflow:3.0.2}
+  # build: .
+  environment:
+    &airflow-common-env
+    AIRFLOW__CORE__EXECUTOR: CeleryExecutor
+    AIRFLOW__CORE__AUTH_MANAGER: airflow.providers.fab.auth_manager.fab_auth_manager.FabAuthManager
+    AIRFLOW__DATABASE__SQL_ALCHEMY_CONN: postgresql+psycopg2://airflow:airflow@postgres/airflow
+    AIRFLOW__CELERY__RESULT_BACKEND: db+postgresql://airflow:airflow@postgres/airflow
+    AIRFLOW__CELERY__BROKER_URL: redis://:@redis:6379/0
+    AIRFLOW__CORE__FERNET_KEY: ''
+    AIRFLOW__CORE__DAGS_ARE_PAUSED_AT_CREATION: 'true'
+    AIRFLOW__CORE__LOAD_EXAMPLES: 'false'
+    AIRFLOW__CORE__EXECUTION_API_SERVER_URL: 'http://airflow-apiserver:8080/execution/'
+    AIRFLOW__CORE__DAGS_FOLDER: /opt/airflow/dags
+    AIRFLOW__SCHEDULER__DAG_DIR_LIST_INTERVAL: "15"
+    # yamllint disable rule:line-length
+    # Use simple http server on scheduler for health checks
+    # See https://airflow.apache.org/docs/apache-airflow/stable/administration-and-deployment/logging-monitoring/check-health.html#scheduler-health-check-server
+    # yamllint enable rule:line-length
+    AIRFLOW__SCHEDULER__ENABLE_HEALTH_CHECK: 'true'
+    # WARNING: Use _PIP_ADDITIONAL_REQUIREMENTS option ONLY for a quick checks
+    # for other purpose (development, test and especially production usage) build/extend Airflow image.
+    _PIP_ADDITIONAL_REQUIREMENTS: ${_PIP_ADDITIONAL_REQUIREMENTS:-}
+    # The following line can be used to set a custom config file, stored in the local config folder
+    AIRFLOW_CONFIG: '/opt/airflow/config/airflow.cfg'
+  volumes:
+    - ./dags:/opt/airflow/dags
+    - ${AIRFLOW_PROJ_DIR:-.}/logs:/opt/airflow/logs
+    - ${AIRFLOW_PROJ_DIR:-.}/config:/opt/airflow/config
+    - ${AIRFLOW_PROJ_DIR:-.}/plugins:/opt/airflow/plugins
+  user: "${AIRFLOW_UID:-50000}:0"
+  depends_on:
+    &airflow-common-depends-on
+    redis:
+      condition: service_healthy
+    postgres:
+      condition: service_healthy
+
+
+services:
+  postgres:
+    image: postgres:13
+    environment:
+      POSTGRES_USER: airflow
+      POSTGRES_PASSWORD: airflow
+      POSTGRES_DB: airflow
+    volumes:
+      - postgres-db-volume:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD", "pg_isready", "-U", "airflow"]
+      interval: 10s
+      retries: 5
+      start_period: 5s
+    restart: always
+
+  redis:
+    # Redis is limited to 7.2-bookworm due to licencing change
+    # https://redis.io/blog/redis-adopts-dual-source-available-licensing/
+    image: redis:7.2-bookworm
+    expose:
+      - 6379
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 30s
+      retries: 50
+      start_period: 30s
+    restart: always
+
+  git-sync:
+    image: openweb/git-sync:0.0.1
+    container_name: git-sync
+    environment:
+      - GIT_SYNC_REPO=https://vishal.dalvi:dalvi100@ops-gitlab.iauro.co/gessa/gessa-workflow-engine.git
+      - GIT_SYNC_DEST=/git
+      - GIT_SYNC_BRANCH=dev-airflow-3
+      - GIT_SYNC_REV=FETCH_HEAD
+      - GIT_SYNC_WAIT=10
+    volumes:
+      - ./dags:/git
+    restart: always
+
+  airflow-apiserver:
+    <<: *airflow-common
+    command: api-server
+    ports:
+      - "8085:8080"
+    healthcheck:
+      test: ["CMD", "curl", "--fail", "http://localhost:8080/api/v2/version"]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 30s
+    restart: always
+    depends_on:
+      <<: *airflow-common-depends-on
+      airflow-init:
+        condition: service_completed_successfully
+
+  airflow-scheduler:
+    <<: *airflow-common
+    command: scheduler
+    healthcheck:
+      test: ["CMD", "curl", "--fail", "http://localhost:8974/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 30s
+    restart: always
+    depends_on:
+      <<: *airflow-common-depends-on
+      airflow-init:
+        condition: service_completed_successfully
+
+  airflow-dag-processor:
+    <<: *airflow-common
+    command: dag-processor
+    healthcheck:
+      test: ["CMD-SHELL", 'airflow jobs check --job-type DagProcessorJob --hostname "$${HOSTNAME}"']
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 30s
+    restart: always
+    depends_on:
+      <<: *airflow-common-depends-on
+      airflow-init:
+        condition: service_completed_successfully
+
+  airflow-worker:
+    <<: *airflow-common
+    command: celery worker
+    healthcheck:
+      # yamllint disable rule:line-length
+      test:
+        - "CMD-SHELL"
+        - 'celery --app airflow.providers.celery.executors.celery_executor.app inspect ping -d "celery@$${HOSTNAME}" || celery --app airflow.executors.celery_executor.app inspect ping -d "celery@$${HOSTNAME}"'
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 30s
+    environment:
+      <<: *airflow-common-env
+      # Required to handle warm shutdown of the celery workers properly
+      # See https://airflow.apache.org/docs/docker-stack/entrypoint.html#signal-propagation
+      DUMB_INIT_SETSID: "0"
+    restart: always
+    depends_on:
+      <<: *airflow-common-depends-on
+      airflow-apiserver:
+        condition: service_healthy
+      airflow-init:
+        condition: service_completed_successfully
+
+  airflow-triggerer:
+    <<: *airflow-common
+    command: triggerer
+    healthcheck:
+      test: ["CMD-SHELL", 'airflow jobs check --job-type TriggererJob --hostname "$${HOSTNAME}"']
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 30s
+    restart: always
+    depends_on:
+      <<: *airflow-common-depends-on
+      airflow-init:
+        condition: service_completed_successfully
+
+  airflow-init:
+    <<: *airflow-common
+    entrypoint: /bin/bash
+    # yamllint disable rule:line-length
+    command:
+      - -c
+      - |
+        if [[ -z "$${AIRFLOW_UID}" ]]; then
+          echo
+          echo -e "\033[1;33mWARNING!!!: AIRFLOW_UID not set!\e[0m"
+          echo "If you are on Linux, you SHOULD follow the instructions below to set "
+          echo "AIRFLOW_UID environment variable, otherwise files will be owned by root."
+          echo "For other operating systems you can get rid of the warning with manually created .env file:"
+          echo "    See: https://airflow.apache.org/docs/apache-airflow/stable/howto/docker-compose/index.html#setting-the-right-airflow-user"
+          echo
+          export AIRFLOW_UID=$$(id -u)
+        fi
+        one_meg=1048576
+        mem_available=$$(($$(getconf _PHYS_PAGES) * $$(getconf PAGE_SIZE) / one_meg))
+        cpus_available=$$(grep -cE 'cpu[0-9]+' /proc/stat)
+        disk_available=$$(df / | tail -1 | awk '{print $$4}')
+        warning_resources="false"
+        if (( mem_available < 4000 )) ; then
+          echo
+          echo -e "\033[1;33mWARNING!!!: Not enough memory available for Docker.\e[0m"
+          echo "At least 4GB of memory required. You have $$(numfmt --to iec $$((mem_available * one_meg)))"
+          echo
+          warning_resources="true"
+        fi
+        if (( cpus_available < 2 )); then
+          echo
+          echo -e "\033[1;33mWARNING!!!: Not enough CPUS available for Docker.\e[0m"
+          echo "At least 2 CPUs recommended. You have $${cpus_available}"
+          echo
+          warning_resources="true"
+        fi
+        if (( disk_available < one_meg * 10 )); then
+          echo
+          echo -e "\033[1;33mWARNING!!!: Not enough Disk space available for Docker.\e[0m"
+          echo "At least 10 GBs recommended. You have $$(numfmt --to iec $$((disk_available * 1024 )))"
+          echo
+          warning_resources="true"
+        fi
+        if [[ $${warning_resources} == "true" ]]; then
+          echo
+          echo -e "\033[1;33mWARNING!!!: You have not enough resources to run Airflow (see above)!\e[0m"
+          echo "Please follow the instructions to increase amount of resources available:"
+          echo "   https://airflow.apache.org/docs/apache-airflow/stable/howto/docker-compose/index.html#before-you-begin"
+          echo
+        fi
+        echo
+        echo "Creating missing opt dirs if missing:"
+        echo
+        mkdir -v -p /opt/airflow/{logs,dags,plugins,config}
+        echo
+        echo "Airflow version:"
+        /entrypoint airflow version
+        echo
+        echo "Files in shared volumes:"
+        echo
+        ls -la /opt/airflow/{logs,dags,plugins,config}
+        echo
+        echo "Running airflow config list to create default config file if missing."
+        echo
+        /entrypoint airflow config list >/dev/null
+        echo
+        echo "Files in shared volumes:"
+        echo
+        ls -la /opt/airflow/{logs,dags,plugins,config}
+        echo
+        echo "Change ownership of files in /opt/airflow to $${AIRFLOW_UID}:0"
+        echo
+        chown -R "$${AIRFLOW_UID}:0" /opt/airflow/
+        echo
+        echo "Change ownership of files in shared volumes to $${AIRFLOW_UID}:0"
+        echo
+        chown -v -R "$${AIRFLOW_UID}:0" /opt/airflow/{logs,dags,plugins,config}
+        echo
+        echo "Files in shared volumes:"
+        echo
+        ls -la /opt/airflow/{logs,dags,plugins,config}
+
+    # yamllint enable rule:line-length
+    environment:
+      <<: *airflow-common-env
+      _AIRFLOW_DB_MIGRATE: 'true'
+      _AIRFLOW_WWW_USER_CREATE: 'true'
+      _AIRFLOW_WWW_USER_USERNAME: ${_AIRFLOW_WWW_USER_USERNAME:-airflow}
+      _AIRFLOW_WWW_USER_PASSWORD: ${_AIRFLOW_WWW_USER_PASSWORD:-airflow}
+      _PIP_ADDITIONAL_REQUIREMENTS: ''
+    user: "0:0"
+
+  airflow-cli:
+    <<: *airflow-common
+    profiles:
+      - debug
+    environment:
+      <<: *airflow-common-env
+      CONNECTION_CHECK_MAX_COUNT: "0"
+    # Workaround for entrypoint issue. See: https://github.com/apache/airflow/issues/16252
+    command:
+      - bash
+      - -c
+      - airflow
+    depends_on:
+      <<: *airflow-common-depends-on
+
+  # You can enable flower by adding "--profile flower" option e.g. docker-compose --profile flower up
+  # or by explicitly targeted on the command line e.g. docker-compose up flower.
+  # See: https://docs.docker.com/compose/profiles/
+  flower:
+    <<: *airflow-common
+    command: celery flower
+    profiles:
+      - flower
+    ports:
+      - "5555:5555"
+    healthcheck:
+      test: ["CMD", "curl", "--fail", "http://localhost:5555/"]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 30s
+    restart: always
+    depends_on:
+      <<: *airflow-common-depends-on
+      airflow-init:
+        condition: service_completed_successfully
+
+volumes:
+  postgres-db-volume:
+  dags-sync:
+
+
+    #volumes:
+  #  dags-sync:
+
+
+networks:
+  default:
+     external:
+        name: gessa-dev
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