lb-tech-handler 1.7.3

This package allows faster development by allowing developers to focus on the core logic.

📝 Table of Contents

• About
• Getting Started
• Deployment
• Usage
• Built Using
• TODO
• Contributing
• Authors
• Acknowledgments

🧐 About

Write about 1-2 paragraphs describing the purpose of your project.

🏁 Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Setting Up the Module

Set the Envirornment Varibles

Create a file called .env in the root directory

LB_DB_HOST_NAME_OR_IP = 192.168.1.1
LB_DB_USER_NAME = USER1
LB_DB_PASSWORD = ABCDEF
LB_DB_PORT = 5432
LB_DB_DATABASE_NAME = DBNAME

Install the Module

pip install lb_tech_handler

if already installed then upgrade

pip install --upgrade lb_tech_handler

End with an example of getting some data out of the system or using it for a little demo.

Overall Functions In each Modules

Db Handler

The db_handler sub-module handles various operations.

- execute_query

- execute_query_and_return_result

- execute_transaction

- execute_transaction_with_multiprocessing

- get_connection_from_pool

- get_dataframe_from_list_of_queries

- get_dataframe_from_query

- is_free_connection_in_pool

- load_dotenv

- put_connection_in_pool

- test_async_query

- test_excution_multi_query

- timed_execution

Api Handler

The api_handler sub-module handles various operations.

- authenticated_tracked_external_api

- authenticated_tracked_internal_api

- authenticated_untracked_external_api

- authenticated_untracked_internal_api

- create_redis_client

- debug_api_response

- debug_drf_response

- execute_query_and_return_result

- get_user_token_from_redis

- get_values_from_token

- log_api_request

- log_drf_request

- proccess_django_api

- set_lb_auth_user_token_to_redis

- test_api

- throttle_api_call

- unauthenticated_tracked_external_api

- unauthenticated_tracked_internal_api

- unauthenticated_untracked_external_api

- unauthenticated_untracked_internal_api

- under_development_api

- validate_token

File Handler

The file_handler sub-module handles various operations.

- delete_file

- generate_barcode

- generate_qr_code

- get_file_extension

- get_file_name

- get_file_name_without_extension

- get_file_size

- get_number_of_pages_of_pdf

- rename_pdf_file_with_page_number

Os Handler

The os_handler sub-module handles various operations.

- get_all_env_variables

- get_cpu_count

- get_env_variable

- set_env_variable

Common Methods

The common_methods sub-module handles various operations.

- timed_execution

Documentation Handler

The documentation_handler sub-module handles various operations.

No functions available.

Notification Handler

The notification_handler sub-module handles various operations.

- load_dotenv

- send_teams_notification

Function Defination

Db Handler

The db_handler sub-module handles various operations.

• execute_query:

    _summary_
    
    Args:
        query (str): _description_
        vars (dict, optional): _description_. Defaults to {}.
    
    Raises:
        Exception: _description_
  

• execute_query_and_return_result:

    _summary_
    
    Args:
        query (str): _description_
        vars (dict, optional): _description_. Defaults to {}.
    
    Raises:
        Exception: _description_
    
    Returns:
        list: _description_
  

• execute_transaction:

    Executes a list of queries
    
    Input Format:
    
        [
            {
                'query':query,
                'vars':{
                    "key1":"value1",
                    "key2":"value2"
                }
            },
            {
                'query':query2,
                'vars':{
                    "key1":"value1",
                    "key2":"value4"
                }
            }
        ]
    
    
    Args:
    --------
        query (str): query
        vars (dict, optional): _description_. Defaults to {}.
    
    Returns:
    ---------
        is_transaction_successful: bool
  

• execute_transaction_with_multiprocessing:

    This is a function to execute a list of queries in parallel using multiprocessing
    Use this when you have a list of queries and want to execute them in parallel
    
    Args:
    
    - list_of_queries (list[dict]):
    
    Input Format:
    
            [
                {
                    'query':query,
                    'vars':{
                        "key1":"value1",
                        "key2":"value2"
                    }
                },
                {
                    'query':query2,
                    'vars':{
                        "key1":"value1",
                        "key2":"value2"
                    }
                }
            ]
    
    - MAX_PROCESS (int, optional): Maximum number of processes to use.
        - Defaults to CPU_COUNT.
    
    Returns:
        bool: _description_
  

• get_connection_from_pool:

    No description available
  

• get_dataframe_from_list_of_queries:

    returns the query as pandas dataframe from database
    
    Input Format:
        [
            {
                'query':query,
                'vars':{
                    "key1":"value1",
                    "key2":"value2"
                }
            },
            {
                'query':query2,
                'vars':{
                    "key1":"value1",
                    "key2":"value2"
                }
            }
        ]
    
    Args:
    --------
        query (str): query
    
    Returns:
    ---------
        data: pandas dataframe from query
  

• get_dataframe_from_query:

    _summary_
    
    Args:
        query (str): _description_
        vars (dict, optional): _description_. Defaults to {}.
    
    Returns:
        _type_: _description_
  

• is_free_connection_in_pool:

    No description available
  

• load_dotenv:

    Parse a .env file and then load all the variables found as environment variables.
    
    Parameters:
        dotenv_path: Absolute or relative path to .env file.
        stream: Text stream (such as `io.StringIO`) with .env content, used if
            `dotenv_path` is `None`.
        verbose: Whether to output a warning the .env file is missing.
        override: Whether to override the system environment variables with the variables
            from the `.env` file.
        encoding: Encoding to be used to read the file.
    Returns:
        Bool: True if at least one environment variable is set else False
    
    If both `dotenv_path` and `stream` are `None`, `find_dotenv()` is used to find the
    .env file with it's default parameters. If you need to change the default parameters
    of `find_dotenv()`, you can explicitly call `find_dotenv()` and pass the result
    to this function as `dotenv_path`.
  

• put_connection_in_pool:

    No description available
  

• test_async_query:

    No description available
  

• test_excution_multi_query:

    No description available
  

• timed_execution:

    This is a decorator to time the execution time of a function
    
    Example:
        @timed_execution
        def test_api():
            response = requests.get("https://api.learnbasics.fun/testing?name=test")
    
    Args:
        func (_type_): Function to be timed
  

Api Handler

The api_handler sub-module handles various operations.

• authenticated_tracked_external_api:

    Decorator for authenticated, tracked external APIs.
    Requires user token and logs API calls into the database.
    
    Args:
        view_func: The view function to be wrapped.
    
    Returns:
        Response from the view function if token is valid; otherwise, a 401 or 403 error.
  

• authenticated_tracked_internal_api:

    Decorator for authenticated, tracked internal APIs.
    Validates user token, origin against ALLOWED_DOMAINS, and logs API calls into the database.
    
    Args:
        view_func: The view function to be wrapped.
    
    Returns:
        Response from the view function if validation passes; otherwise, a 401 or 403 error.
  

• authenticated_untracked_external_api:

    Decorator for authenticated, untracked external APIs.
    Requires user token for access but does not log the API call into the database.
    
    Args:
        view_func: The view function to be wrapped.
    
    Returns:
        Response from the view function if token is valid; otherwise, a 401 or 403 error.
  

• authenticated_untracked_internal_api:

    Decorator for authenticated, untracked internal APIs.
    Validates user token and origin against ALLOWED_DOMAINS.
    
    Args:
        view_func: The view function to be wrapped.
    
    Returns:
        Response from the view function if validation passes; otherwise, a 401 or 403 error.
  

• create_redis_client:

    No description available
  

• debug_api_response:

    Debug an API response by collecting useful details and returning them as a structured dictionary.
    
    Args:
        api_response (requests.Response): The API response object to debug.
    
    Returns:
        dict: A dictionary containing API debugging information.
  

• debug_drf_response:

    Debug a Django REST Framework Response by collecting useful details and returning them as a structured dictionary.
    
    Args:
        drf_response (Response): The DRF Response object to debug.
        request (HttpRequest): The original HttpRequest object.
    
    Returns:
        dict: A dictionary containing DRF response debugging information.
  

• execute_query_and_return_result:

    _summary_
    
    Args:
        query (str): _description_
        vars (dict, optional): _description_. Defaults to {}.
    
    Raises:
        Exception: _description_
    
    Returns:
        list: _description_
  

• get_user_token_from_redis:

    No description available
  

• get_values_from_token:

    Extracts email and expiration timestamp from the provided access token.
    
    Args:
        access_token (str): The access token from which details are extracted.
  

• log_api_request:

    _summary_
    
    Example:
        api_response = requests.get("https://api.learnbasics.fun/testing?name=test")
        api_log_id = log_api_request(api_response=api_response,log_file_name=log_file_name,log_to_database=True,log_to_file=True)
    
    Args:
        api_response (requests.Response): _description_
        log_file_name (str, optional): _description_. Defaults to DEFAULT_LOG_FILE_NAME.
        log_to_database (bool, optional): _description_. Defaults to False.
        log_to_file (bool, optional): _description_. Defaults to True.
        application_id (int, optional): _description_. Defaults to 0.
        user_id (int, optional): _description_. Defaults to 0.
    
    Returns:
        int: Returns the api log id , returns 0 if not logged
  

• log_drf_request:

    _summary_
    
    Example:
        api_response = requests.get("https://api.learnbasics.fun/testing?name=test")
        api_log_id = log_api_request(api_response=api_response,log_file_name=log_file_name,log_to_database=True,log_to_file=True)
    
    Args:
        api_response (requests.Response): _description_
        log_file_name (str, optional): _description_. Defaults to DEFAULT_LOG_FILE_NAME.
        log_to_database (bool, optional): _description_. Defaults to False.
        log_to_file (bool, optional): _description_. Defaults to True.
        application_id (int, optional): _description_. Defaults to 0.
        user_id (int, optional): _description_. Defaults to 0.
    
    Returns:
        int: Returns the api log id , returns 0 if not logged
  

• proccess_django_api:

    Processes a Django API request.
    
    Args:
        view_func (_type_): _description_
        request (HttpRequest): _description_
        is_authentication_required (bool, optional): _description_. Defaults to True.
        is_tracked_api (bool, optional): _description_. Defaults to True.
        is_internal_api (bool, optional): _description_. Defaults to True.
        under_development (bool, optional): _description_. Defaults to False.
    
    Returns:
        _type_: _description_
  

• set_lb_auth_user_token_to_redis:

    No description available
  

• test_api:

    No description available
  

• throttle_api_call:

    This is a decorator use to slow down API calls.
    SLowing down API calls by throttling to prevent overloading the server.
    
    Example:
        @throttle_api_call(minimum_api_wait_time_in_seconds=3,maximum_api_wait_time_in_seconds=5)
        def test_api():
            response = requests.get("https://api.learnbasics.fun/testing?name=test")
    
        @throttle_api_call
        def test_api():
            response = requests.get("https://api.learnbasics.fun/testing?name=test")
    
    Args:
        minimum_api_wait_time_in_seconds (int, optional): _description_. Defaults to 3.
        maximum_api_wait_time_in_seconds (int, optional): _description_. Defaults to 5.
  

• unauthenticated_tracked_external_api:

    Decorator for unauthenticated, tracked external APIs.
    Logs API calls into the database.
    
    Args:
        view_func: The view function to be wrapped.
    
    Returns:
        Response from the view function.
  

• unauthenticated_tracked_internal_api:

    Decorator for unauthenticated, tracked internal APIs.
    Validates the origin against ALLOWED_DOMAINS and logs API calls into the database.
    
    Args:
        view_func: The view function to be wrapped.
    
    Returns:
        Response from the view function if origin is allowed; otherwise, a 403 error.
  

• unauthenticated_untracked_external_api:

    Decorator for unauthenticated, untracked external APIs.
    This API does not require authentication and is not logged into the database.
    
    Args:
        view_func: The view function to be wrapped.
    
    Returns:
        Response from the view function.
  

• unauthenticated_untracked_internal_api:

    Decorator for unauthenticated, untracked internal APIs.
    Validates the origin against ALLOWED_DOMAINS.
    
    Args:
        view_func: The view function to be wrapped.
    
    Returns:
        Response from the view function if origin is allowed; otherwise, a 403 error.
  

• under_development_api:

    Decorator for APIs under development.
    Allows access only from TESTING_HOST.
    
    Args:
        view_func: The view function to be wrapped.
    
    Returns:
        Response from the view function if host is in TESTING_HOST; otherwise, a 403 error.
  

• validate_token:

    Validates the token's email and expiration timestamp.
    
    Args:
        mail (str): The email extracted from the token.
        exp (int): The expiration timestamp from the token.
  

File Handler

The file_handler sub-module handles various operations.

• delete_file:

    Function to delete file
    
    Args:
        file_path (str): Path of the file
  

• generate_barcode:

    Function to generate a barcode
    
    Args:
        value (_type_): Value of the barcode
        path (_type_): Path to save the barcode
        barcode_value_to_be_printed (bool, optional): Wether to print the value of barocde at bottom. Defaults to False.
    
    Raises:
        Exception: _description_
    
    Returns:
        str: Barcode path
  

• generate_qr_code:

    Function to generate a QR code.
    
    Args:
        value (str): The data or text to encode in the QR code.
        path (str): The file path where the generated QR code image will be saved.
    
        config (dict, optional): Configuration for QR code generation. Defaults to {}.
    
        General Configuration:
            version (int, optional): Controls the size of the QR Code (1 is the smallest, 40 is the largest). Defaults to 1.
            error_correction (int, optional): Level of error correction. Defaults to 1 (Low).
    
                    - 1: Low (7% of codewords can be restored).
    
                    - 2: Medium (15% of codewords can be restored).
    
                    - 3: High (25% of codewords can be restored).
    
                    - 4: Very High (30% of codewords can be restored).
    
        Display Configuration:
            box_size (int, optional): The size of each box in the QR code grid. Defaults to 10.
            border (int, optional): The width of the border (minimum is 4). Defaults to 4.
            fit (bool, optional): Whether to adjust the QR Code size to fit the data. Defaults to True.
    
        Color Configuration:
            fill_color (str, optional): The color of the QR code. Defaults to "black".
            back_color (str, optional): The background color of the QR code. Defaults to "white".
    
    
        Example:
            config = {
                "version": 1,
                "error_correction": 2,
                "box_size": 10,
                "border": 4,
                "fit": True,
                "fill_color": "blue",
                "back_color": "yellow"
            }
    
    Returns:
        str: The file path where the QR code image was saved.
  

• get_file_extension:

    Function to get file extension
    
    Args:
        file_path (str): Path of the file
    
    Returns:
        str: Extension of the file
  

• get_file_name:

    Function to get file name wwithout the folder structure.
    
    Args:
        file_path (str): Path of the file
    
    Returns:
        str: Name of the file
  

• get_file_name_without_extension:

    Function to get file name wwithout the folder structure.
    
    Args:
        file_path (str): Path of the file
    
    Returns:
        str: Name of the file
  

• get_file_size:

    Function to get file size
    
    Args:
        file_path (str): Path of the file
    
    Returns:
        int: Size of the file in bytes
  

• get_number_of_pages_of_pdf:

    Function to get number of pages
    
    Args:
        file_path (str): _description_
    
    Returns:
        int: Number of pages
  

• rename_pdf_file_with_page_number:

    Function to rename a PDF file with page number
    
    Args:
        file_path (str): Path of the file
        add_page_name_at_start (bool, optional): If True, the page number will be added at the start of the file name else at the end. Defaults to True.
        keep_original_file_name (bool, optional): If True, the original file name will be kept else deleted. Defaults to False.
    
    Returns:
        str: Path of the new file
  

Os Handler

The os_handler sub-module handles various operations.

• get_all_env_variables:

    Function to get all env variables
    
    Returns:
        dict: _description_
  

• get_cpu_count:

    Function to get cpu count
    
    Returns:
        int: Number of cpus
  

• get_env_variable:

    Function to get env variable
    
    Args:
        key (str): _description_
    
    Returns:
        str: _description_
  

• set_env_variable:

    Function to set env variable
    
    Args:
        key (str): _description_
        value (str): _description_
  

Common Methods

The common_methods sub-module handles various operations.

• timed_execution:

    This is a decorator to time the execution time of a function
    
    Example:
        @timed_execution
        def test_api():
            response = requests.get("https://api.learnbasics.fun/testing?name=test")
    
    Args:
        func (_type_): Function to be timed
  

Documentation Handler

The documentation_handler sub-module handles various operations.

No functions available.

Notification Handler

The notification_handler sub-module handles various operations.

• load_dotenv:

    Parse a .env file and then load all the variables found as environment variables.
    
    Parameters:
        dotenv_path: Absolute or relative path to .env file.
        stream: Text stream (such as `io.StringIO`) with .env content, used if
            `dotenv_path` is `None`.
        verbose: Whether to output a warning the .env file is missing.
        override: Whether to override the system environment variables with the variables
            from the `.env` file.
        encoding: Encoding to be used to read the file.
    Returns:
        Bool: True if at least one environment variable is set else False
    
    If both `dotenv_path` and `stream` are `None`, `find_dotenv()` is used to find the
    .env file with it's default parameters. If you need to change the default parameters
    of `find_dotenv()`, you can explicitly call `find_dotenv()` and pass the result
    to this function as `dotenv_path`.
  

• send_teams_notification:

    No description available
  

License

This project is licensed under the MIT License - see the LICENSE file for details.

Add notes about how to use the system.

🚀 Deployment

Add additional notes about how to deploy this on a live system.

⛏️ Built Using

• MongoDB - Database
• Express - Server Framework
• VueJs - Web Framework
• NodeJs - Server Environment

✍️ Authors

• @kylelobo - Idea & Initial work

See also the list of contributors who participated in this project.

🎉 Acknowledgements

• Hat tip to anyone whose code was used
• Inspiration
• References