Create app.py

app.py

@@ -0,0 +1,482 @@
+from __future__ import annotations
+
+import os
+import sys
+import time
+import importlib
+import signal
+import re
+import warnings
+import json
+from threading import Thread
+from typing import Iterable
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.middleware.gzip import GZipMiddleware
+from packaging import version
+
+import logging
+
+# We can't use cmd_opts for this because it will not have been initialized at this point.
+log_level = os.environ.get("SD_WEBUI_LOG_LEVEL")
+if log_level:
+    log_level = getattr(logging, log_level.upper(), None) or logging.INFO
+    logging.basicConfig(
+        level=log_level,
+        format='%(asctime)s %(levelname)s [%(name)s] %(message)s',
+        datefmt='%Y-%m-%d %H:%M:%S',
+    )
+
+logging.getLogger("torch.distributed.nn").setLevel(logging.ERROR)  # sshh...
+logging.getLogger("xformers").addFilter(lambda record: 'A matching Triton is not available' not in record.getMessage())
+
+from modules import timer
+startup_timer = timer.startup_timer
+startup_timer.record("launcher")
+
+import torch
+import pytorch_lightning   # noqa: F401 # pytorch_lightning should be imported after torch, but it re-enables warnings on import so import once to disable them
+warnings.filterwarnings(action="ignore", category=DeprecationWarning, module="pytorch_lightning")
+warnings.filterwarnings(action="ignore", category=UserWarning, module="torchvision")
+startup_timer.record("import torch")
+
+import gradio  # noqa: F401
+startup_timer.record("import gradio")
+
+from modules import paths, timer, import_hook, errors, devices  # noqa: F401
+startup_timer.record("setup paths")
+
+import ldm.modules.encoders.modules  # noqa: F401
+startup_timer.record("import ldm")
+
+from modules import extra_networks
+from modules.call_queue import wrap_gradio_gpu_call, wrap_queued_call, queue_lock  # noqa: F401
+
+# Truncate version number of nightly/local build of PyTorch to not cause exceptions with CodeFormer or Safetensors
+if ".dev" in torch.__version__ or "+git" in torch.__version__:
+    torch.__long_version__ = torch.__version__
+    torch.__version__ = re.search(r'[\d.]+[\d]', torch.__version__).group(0)
+
+from modules import shared, sd_samplers, upscaler, extensions, localization, ui_tempdir, ui_extra_networks, config_states
+import modules.codeformer_model as codeformer
+import modules.face_restoration
+import modules.gfpgan_model as gfpgan
+import modules.img2img
+
+import modules.lowvram
+import modules.scripts
+import modules.sd_hijack
+import modules.sd_hijack_optimizations
+import modules.sd_models
+import modules.sd_vae
+import modules.sd_unet
+import modules.txt2img
+import modules.script_callbacks
+import modules.textual_inversion.textual_inversion
+import modules.progress
+
+import modules.ui
+from modules import modelloader
+from modules.shared import cmd_opts
+import modules.hypernetworks.hypernetwork
+
+startup_timer.record("other imports")
+
+
+if cmd_opts.server_name:
+    server_name = cmd_opts.server_name
+else:
+    server_name = "0.0.0.0" if cmd_opts.listen else None
+
+
+def fix_asyncio_event_loop_policy():
+    """
+        The default `asyncio` event loop policy only automatically creates
+        event loops in the main threads. Other threads must create event
+        loops explicitly or `asyncio.get_event_loop` (and therefore
+        `.IOLoop.current`) will fail. Installing this policy allows event
+        loops to be created automatically on any thread, matching the
+        behavior of Tornado versions prior to 5.0 (or 5.0 on Python 2).
+    """
+
+    import asyncio
+
+    if sys.platform == "win32" and hasattr(asyncio, "WindowsSelectorEventLoopPolicy"):
+        # "Any thread" and "selector" should be orthogonal, but there's not a clean
+        # interface for composing policies so pick the right base.
+        _BasePolicy = asyncio.WindowsSelectorEventLoopPolicy  # type: ignore
+    else:
+        _BasePolicy = asyncio.DefaultEventLoopPolicy
+
+    class AnyThreadEventLoopPolicy(_BasePolicy):  # type: ignore
+        """Event loop policy that allows loop creation on any thread.
+        Usage::
+
+            asyncio.set_event_loop_policy(AnyThreadEventLoopPolicy())
+        """
+
+        def get_event_loop(self) -> asyncio.AbstractEventLoop:
+            try:
+                return super().get_event_loop()
+            except (RuntimeError, AssertionError):
+                # This was an AssertionError in python 3.4.2 (which ships with debian jessie)
+                # and changed to a RuntimeError in 3.4.3.
+                # "There is no current event loop in thread %r"
+                loop = self.new_event_loop()
+                self.set_event_loop(loop)
+                return loop
+
+    asyncio.set_event_loop_policy(AnyThreadEventLoopPolicy())
+
+
+def check_versions():
+    if shared.cmd_opts.skip_version_check:
+        return
+
+    expected_torch_version = "2.0.0"
+
+    if version.parse(torch.__version__) < version.parse(expected_torch_version):
+        errors.print_error_explanation(f"""
+You are running torch {torch.__version__}.
+The program is tested to work with torch {expected_torch_version}.
+To reinstall the desired version, run with commandline flag --reinstall-torch.
+Beware that this will cause a lot of large files to be downloaded, as well as
+there are reports of issues with training tab on the latest version.
+
+Use --skip-version-check commandline argument to disable this check.
+        """.strip())
+
+    expected_xformers_version = "0.0.20"
+    if shared.xformers_available:
+        import xformers
+
+        if version.parse(xformers.__version__) < version.parse(expected_xformers_version):
+            errors.print_error_explanation(f"""
+You are running xformers {xformers.__version__}.
+The program is tested to work with xformers {expected_xformers_version}.
+To reinstall the desired version, run with commandline flag --reinstall-xformers.
+
+Use --skip-version-check commandline argument to disable this check.
+            """.strip())
+
+
+def restore_config_state_file():
+    config_state_file = shared.opts.restore_config_state_file
+    if config_state_file == "":
+        return
+
+    shared.opts.restore_config_state_file = ""
+    shared.opts.save(shared.config_filename)
+
+    if os.path.isfile(config_state_file):
+        print(f"*** About to restore extension state from file: {config_state_file}")
+        with open(config_state_file, "r", encoding="utf-8") as f:
+            config_state = json.load(f)
+            config_states.restore_extension_config(config_state)
+        startup_timer.record("restore extension config")
+    elif config_state_file:
+        print(f"!!! Config state backup not found: {config_state_file}")
+
+
+def validate_tls_options():
+    if not (cmd_opts.tls_keyfile and cmd_opts.tls_certfile):
+        return
+
+    try:
+        if not os.path.exists(cmd_opts.tls_keyfile):
+            print("Invalid path to TLS keyfile given")
+        if not os.path.exists(cmd_opts.tls_certfile):
+            print(f"Invalid path to TLS certfile: '{cmd_opts.tls_certfile}'")
+    except TypeError:
+        cmd_opts.tls_keyfile = cmd_opts.tls_certfile = None
+        print("TLS setup invalid, running webui without TLS")
+    else:
+        print("Running with TLS")
+    startup_timer.record("TLS")
+
+
+def get_gradio_auth_creds() -> Iterable[tuple[str, ...]]:
+    """
+    Convert the gradio_auth and gradio_auth_path commandline arguments into
+    an iterable of (username, password) tuples.
+    """
+    def process_credential_line(s) -> tuple[str, ...] | None:
+        s = s.strip()
+        if not s:
+            return None
+        return tuple(s.split(':', 1))
+
+    if cmd_opts.gradio_auth:
+        for cred in cmd_opts.gradio_auth.split(','):
+            cred = process_credential_line(cred)
+            if cred:
+                yield cred
+
+    if cmd_opts.gradio_auth_path:
+        with open(cmd_opts.gradio_auth_path, 'r', encoding="utf8") as file:
+            for line in file.readlines():
+                for cred in line.strip().split(','):
+                    cred = process_credential_line(cred)
+                    if cred:
+                        yield cred
+
+
+def configure_sigint_handler():
+    # make the program just exit at ctrl+c without waiting for anything
+    def sigint_handler(sig, frame):
+        print(f'Interrupted with signal {sig} in {frame}')
+        os._exit(0)
+
+    if not os.environ.get("COVERAGE_RUN"):
+        # Don't install the immediate-quit handler when running under coverage,
+        # as then the coverage report won't be generated.
+        signal.signal(signal.SIGINT, sigint_handler)
+
+
+def configure_opts_onchange():
+    shared.opts.onchange("sd_model_checkpoint", wrap_queued_call(lambda: modules.sd_models.reload_model_weights()), call=False)
+    shared.opts.onchange("sd_vae", wrap_queued_call(lambda: modules.sd_vae.reload_vae_weights()), call=False)
+    shared.opts.onchange("sd_vae_as_default", wrap_queued_call(lambda: modules.sd_vae.reload_vae_weights()), call=False)
+    shared.opts.onchange("temp_dir", ui_tempdir.on_tmpdir_changed)
+    shared.opts.onchange("gradio_theme", shared.reload_gradio_theme)
+    shared.opts.onchange("cross_attention_optimization", wrap_queued_call(lambda: modules.sd_hijack.model_hijack.redo_hijack(shared.sd_model)), call=False)
+    startup_timer.record("opts onchange")
+
+
+def initialize():
+    fix_asyncio_event_loop_policy()
+    validate_tls_options()
+    configure_sigint_handler()
+    check_versions()
+    modelloader.cleanup_models()
+    configure_opts_onchange()
+
+    modules.sd_models.setup_model()
+    startup_timer.record("setup SD model")
+
+    codeformer.setup_model(cmd_opts.codeformer_models_path)
+    startup_timer.record("setup codeformer")
+
+    gfpgan.setup_model(cmd_opts.gfpgan_models_path)
+    startup_timer.record("setup gfpgan")
+
+    initialize_rest(reload_script_modules=False)
+
+
+def initialize_rest(*, reload_script_modules=False):
+    """
+    Called both from initialize() and when reloading the webui.
+    """
+    sd_samplers.set_samplers()
+    extensions.list_extensions()
+    startup_timer.record("list extensions")
+
+    restore_config_state_file()
+
+    if cmd_opts.ui_debug_mode:
+        shared.sd_upscalers = upscaler.UpscalerLanczos().scalers
+        modules.scripts.load_scripts()
+        return
+
+    modules.sd_models.list_models()
+    startup_timer.record("list SD models")
+
+    localization.list_localizations(cmd_opts.localizations_dir)
+
+    with startup_timer.subcategory("load scripts"):
+        modules.scripts.load_scripts()
+
+    if reload_script_modules:
+        for module in [module for name, module in sys.modules.items() if name.startswith("modules.ui")]:
+            importlib.reload(module)
+        startup_timer.record("reload script modules")
+
+    modelloader.load_upscalers()
+    startup_timer.record("load upscalers")
+
+    modules.sd_vae.refresh_vae_list()
+    startup_timer.record("refresh VAE")
+    modules.textual_inversion.textual_inversion.list_textual_inversion_templates()
+    startup_timer.record("refresh textual inversion templates")
+
+    modules.script_callbacks.on_list_optimizers(modules.sd_hijack_optimizations.list_optimizers)
+    modules.sd_hijack.list_optimizers()
+    startup_timer.record("scripts list_optimizers")
+
+    modules.sd_unet.list_unets()
+    startup_timer.record("scripts list_unets")
+
+    def load_model():
+        """
+        Accesses shared.sd_model property to load model.
+        After it's available, if it has been loaded before this access by some extension,
+        its optimization may be None because the list of optimizaers has neet been filled
+        by that time, so we apply optimization again.
+        """
+
+        shared.sd_model  # noqa: B018
+
+        if modules.sd_hijack.current_optimizer is None:
+            modules.sd_hijack.apply_optimizations()
+
+    Thread(target=load_model).start()
+
+    Thread(target=devices.first_time_calculation).start()
+
+    shared.reload_hypernetworks()
+    startup_timer.record("reload hypernetworks")
+
+    ui_extra_networks.initialize()
+    ui_extra_networks.register_default_pages()
+
+    extra_networks.initialize()
+    extra_networks.register_default_extra_networks()
+    startup_timer.record("initialize extra networks")
+
+
+def setup_middleware(app):
+    app.middleware_stack = None  # reset current middleware to allow modifying user provided list
+    app.add_middleware(GZipMiddleware, minimum_size=1000)
+    configure_cors_middleware(app)
+    app.build_middleware_stack()  # rebuild middleware stack on-the-fly
+
+
+def configure_cors_middleware(app):
+    cors_options = {
+        "allow_methods": ["*"],
+        "allow_headers": ["*"],
+        "allow_credentials": True,
+    }
+    if cmd_opts.cors_allow_origins:
+        cors_options["allow_origins"] = cmd_opts.cors_allow_origins.split(',')
+    if cmd_opts.cors_allow_origins_regex:
+        cors_options["allow_origin_regex"] = cmd_opts.cors_allow_origins_regex
+    app.add_middleware(CORSMiddleware, **cors_options)
+
+
+def create_api(app):
+    from modules.api.api import Api
+    api = Api(app, queue_lock)
+    return api
+
+
+def api_only():
+    initialize()
+
+    app = FastAPI()
+    setup_middleware(app)
+    api = create_api(app)
+
+    modules.script_callbacks.app_started_callback(None, app)
+
+    print(f"Startup time: {startup_timer.summary()}.")
+    api.launch(
+        server_name="0.0.0.0" if cmd_opts.listen else "127.0.0.1",
+        port=cmd_opts.port if cmd_opts.port else 7861,
+        root_path=f"/{cmd_opts.subpath}" if cmd_opts.subpath else ""
+    )
+
+
+def webui():
+    launch_api = cmd_opts.api
+    initialize()
+
+    while 1:
+        if shared.opts.clean_temp_dir_at_start:
+            ui_tempdir.cleanup_tmpdr()
+            startup_timer.record("cleanup temp dir")
+
+        modules.script_callbacks.before_ui_callback()
+        startup_timer.record("scripts before_ui_callback")
+
+        shared.demo = modules.ui.create_ui()
+        startup_timer.record("create ui")
+
+        if not cmd_opts.no_gradio_queue:
+            shared.demo.queue(64)
+
+        gradio_auth_creds = list(get_gradio_auth_creds()) or None
+
+        app, local_url, share_url = shared.demo.launch(
+            share=cmd_opts.share,
+            server_name=server_name,
+            server_port=cmd_opts.port,
+            ssl_keyfile=cmd_opts.tls_keyfile,
+            ssl_certfile=cmd_opts.tls_certfile,
+            ssl_verify=cmd_opts.disable_tls_verify,
+            debug=cmd_opts.gradio_debug,
+            auth=gradio_auth_creds,
+            inbrowser=cmd_opts.autolaunch and os.getenv('SD_WEBUI_RESTARTING') != '1',
+            prevent_thread_lock=True,
+            allowed_paths=cmd_opts.gradio_allowed_path,
+            app_kwargs={
+                "docs_url": "/docs",
+                "redoc_url": "/redoc",
+            },
+            root_path=f"/{cmd_opts.subpath}" if cmd_opts.subpath else "",
+        )
+
+        # after initial launch, disable --autolaunch for subsequent restarts
+        cmd_opts.autolaunch = False
+
+        startup_timer.record("gradio launch")
+
+        # gradio uses a very open CORS policy via app.user_middleware, which makes it possible for
+        # an attacker to trick the user into opening a malicious HTML page, which makes a request to the
+        # running web ui and do whatever the attacker wants, including installing an extension and
+        # running its code. We disable this here. Suggested by RyotaK.
+        app.user_middleware = [x for x in app.user_middleware if x.cls.__name__ != 'CORSMiddleware']
+
+        setup_middleware(app)
+
+        modules.progress.setup_progress_api(app)
+        modules.ui.setup_ui_api(app)
+
+        if launch_api:
+            create_api(app)
+
+        ui_extra_networks.add_pages_to_demo(app)
+
+        startup_timer.record("add APIs")
+
+        with startup_timer.subcategory("app_started_callback"):
+            modules.script_callbacks.app_started_callback(shared.demo, app)
+
+        timer.startup_record = startup_timer.dump()
+        print(f"Startup time: {startup_timer.summary()}.")
+
+        try:
+            while True:
+                server_command = shared.state.wait_for_server_command(timeout=5)
+                if server_command:
+                    if server_command in ("stop", "restart"):
+                        break
+                    else:
+                        print(f"Unknown server command: {server_command}")
+        except KeyboardInterrupt:
+            print('Caught KeyboardInterrupt, stopping...')
+            server_command = "stop"
+
+        if server_command == "stop":
+            print("Stopping server...")
+            # If we catch a keyboard interrupt, we want to stop the server and exit.
+            shared.demo.close()
+            break
+
+        print('Restarting UI...')
+        shared.demo.close()
+        time.sleep(0.5)
+        startup_timer.reset()
+        modules.script_callbacks.app_reload_callback()
+        startup_timer.record("app reload callback")
+        modules.script_callbacks.script_unloaded_callback()
+        startup_timer.record("scripts unloaded callback")
+        initialize_rest(reload_script_modules=True)
+
+
+if __name__ == "__main__":
+    if cmd_opts.nowebui:
+        api_only()
+    else:
+        webui()