text-generation-webui/server.py

import os
import warnings

from modules.logging_colors import logger
from modules.block_requests import OpenMonkeyPatch, RequestBlocker

os.environ['GRADIO_ANALYTICS_ENABLED'] = 'False'
os.environ['BITSANDBYTES_NOWELCOME'] = '1'
warnings.filterwarnings('ignore', category=UserWarning, message='TypedStorage is deprecated')

with RequestBlocker():
    import gradio as gr

import matplotlib
matplotlib.use('Agg')  # This fixes LaTeX rendering on some systems

import json
import os
import sys
import time
from functools import partial
from pathlib import Path
from threading import Lock

import yaml

import modules.extensions as extensions_module
from modules import (
    chat,
    shared,
    training,
    ui,
    ui_chat,
    ui_default,
    ui_file_saving,
    ui_model_menu,
    ui_notebook,
    ui_parameters,
    ui_session,
    utils,
)
from modules.extensions import apply_extensions
from modules.LoRA import add_lora_to_model
from modules.models import load_model
from modules.models_settings import (
    get_model_settings_from_yamls,
    update_model_parameters
)
from modules.utils import gradio


def create_interface():

    title = 'Text generation web UI'

    # Password authentication
    auth = []
    if shared.args.gradio_auth:
        auth.extend(x.strip() for x in shared.args.gradio_auth.strip('"').replace('\n', '').split(',') if x.strip())
    if shared.args.gradio_auth_path:
        with open(shared.args.gradio_auth_path, 'r', encoding="utf8") as file:
            auth.extend(x.strip() for line in file for x in line.split(',') if x.strip())
    auth = [tuple(cred.split(':')) for cred in auth]

    # Import the extensions and execute their setup() functions
    if shared.args.extensions is not None and len(shared.args.extensions) > 0:
        extensions_module.load_extensions()

    # Force some events to be triggered on page load
    shared.persistent_interface_state.update({
        'loader': shared.args.loader or 'Transformers',
    })
    if shared.is_chat():
        shared.persistent_interface_state.update({
            'mode': shared.settings['mode'],
            'character_menu': shared.args.character or shared.settings['character'],
            'instruction_template': shared.settings['instruction_template']
        })

        if Path("cache/pfp_character.png").exists():
            Path("cache/pfp_character.png").unlink()

    # css/js strings
    css = ui.css if not shared.is_chat() else ui.css + ui.chat_css
    js = ui.main_js
    css += apply_extensions('css')
    js += apply_extensions('js')

    # The input elements for the generation functions
    shared.input_elements = ui.list_interface_input_elements()

    with gr.Blocks(css=css, analytics_enabled=False, title=title, theme=ui.theme) as shared.gradio['interface']:

        # Audio notification
        if Path("notification.mp3").exists():
            shared.gradio['audio_notification'] = gr.Audio(interactive=False, value="notification.mp3", elem_id="audio_notification", visible=False)

        # Floating menus for saving/deleting files
        ui_file_saving.create_ui()

        # Temporary clipboard for saving files
        shared.gradio['temporary_text'] = gr.Textbox(visible=False)

        # Text Generation tab
        if shared.is_chat():
            ui_chat.create_ui()
        elif shared.args.notebook:
            ui_notebook.create_ui()
        else:
            ui_default.create_ui()

        ui_parameters.create_ui(shared.settings['preset'])  # Parameters tab
        ui_model_menu.create_ui()  # Model tab
        training.create_ui()  # Training tab
        ui_session.create_ui()  # Session tab

        # Generation events
        if shared.is_chat():
            ui_chat.create_event_handlers()
        elif shared.args.notebook:
            ui_notebook.create_event_handlers()
        else:
            ui_default.create_event_handlers()

        # Other events
        ui_file_saving.create_event_handlers()
        ui_parameters.create_event_handlers()
        ui_model_menu.create_event_handlers()

        # Interface launch events
        if shared.settings['dark_theme']:
            shared.gradio['interface'].load(lambda: None, None, None, _js="() => document.getElementsByTagName('body')[0].classList.add('dark')")
            
        shared.gradio['interface'].load(lambda: None, None, None, _js=f"() => {{{js}}}")
        shared.gradio['interface'].load(partial(ui.apply_interface_values, {}, use_persistent=True), None, gradio(ui.list_interface_input_elements()), show_progress=False)
        if shared.is_chat():
            shared.gradio['interface'].load(chat.redraw_html, shared.reload_inputs, gradio('display'))

        extensions_module.create_extensions_tabs()  # Extensions tabs
        extensions_module.create_extensions_block()  # Extensions block

    # Launch the interface
    shared.gradio['interface'].queue(concurrency_count=64)
    with OpenMonkeyPatch():
        shared.gradio['interface'].launch(
            prevent_thread_lock=True,
            share=shared.args.share,
            server_name=None if not shared.args.listen else (shared.args.listen_host or '0.0.0.0'),
            server_port=shared.args.listen_port,
            inbrowser=shared.args.auto_launch,
            auth=auth or None,
            ssl_verify=False if (shared.args.ssl_keyfile or shared.args.ssl_certfile) else True,
            ssl_keyfile=shared.args.ssl_keyfile,
            ssl_certfile=shared.args.ssl_certfile
        )


if __name__ == "__main__":

    # Load custom settings
    settings_file = None
    if shared.args.settings is not None and Path(shared.args.settings).exists():
        settings_file = Path(shared.args.settings)
    elif Path('settings.yaml').exists():
        settings_file = Path('settings.yaml')
    elif Path('settings.json').exists():
        settings_file = Path('settings.json')

    if settings_file is not None:
        logger.info(f"Loading settings from {settings_file}...")
        file_contents = open(settings_file, 'r', encoding='utf-8').read()
        new_settings = json.loads(file_contents) if settings_file.suffix == "json" else yaml.safe_load(file_contents)
        shared.settings.update(new_settings)

    # Fallback settings for models
    shared.model_config['.*'] = {
        'wbits': 'None',
        'model_type': 'None',
        'groupsize': 'None',
        'pre_layer': 0,
        'mode': shared.settings['mode'],
        'skip_special_tokens': shared.settings['skip_special_tokens'],
        'custom_stopping_strings': shared.settings['custom_stopping_strings'],
        'truncation_length': shared.settings['truncation_length'],
        'n_gqa': 0,
        'rms_norm_eps': 0,
    }

    shared.model_config.move_to_end('.*', last=False)  # Move to the beginning

    # Activate the extensions listed on settings.yaml
    extensions_module.available_extensions = utils.get_available_extensions()
    if shared.is_chat():
        for extension in shared.settings['chat_default_extensions']:
            shared.args.extensions = shared.args.extensions or []
            if extension not in shared.args.extensions:
                shared.args.extensions.append(extension)
    else:
        for extension in shared.settings['default_extensions']:
            shared.args.extensions = shared.args.extensions or []
            if extension not in shared.args.extensions:
                shared.args.extensions.append(extension)

    available_models = utils.get_available_models()

    # Model defined through --model
    if shared.args.model is not None:
        shared.model_name = shared.args.model

    # Select the model from a command-line menu
    elif shared.args.model_menu:
        if len(available_models) == 0:
            logger.error('No models are available! Please download at least one.')
            sys.exit(0)
        else:
            print('The following models are available:\n')
            for i, model in enumerate(available_models):
                print(f'{i+1}. {model}')

            print(f'\nWhich one do you want to load? 1-{len(available_models)}\n')
            i = int(input()) - 1
            print()

        shared.model_name = available_models[i]

    # If any model has been selected, load it
    if shared.model_name != 'None':
        model_settings = get_model_settings_from_yamls(shared.model_name)
        shared.settings.update(model_settings)  # hijacking the interface defaults
        update_model_parameters(model_settings, initial=True)  # hijacking the command-line arguments

        # Load the model
        shared.model, shared.tokenizer = load_model(shared.model_name)
        if shared.args.lora:
            add_lora_to_model(shared.args.lora)

    shared.generation_lock = Lock()

    # Launch the web UI
    create_interface()
    while True:
        time.sleep(0.5)
        if shared.need_restart:
            shared.need_restart = False
            time.sleep(0.5)
            shared.gradio['interface'].close()
            time.sleep(0.5)
            create_interface()