fix: adds logging to langflow run command (#8466)

* Clean up initialiation of uv run langflow run

* sigint fixes

* Log level fixes and gunicorn logs removal

* sqlalch contraints

* Add back banner for windows

* [autofix.ci] apply automated fixes

* handle sigint sigterms

* [autofix.ci] apply automated fixes

* handle multiple sigints

* more gracefully handle shutdown during init

* [autofix.ci] apply automated fixes

* swallow cancellation during log flush

* fix path import and cleanup

* [autofix.ci] apply automated fixes

* start with step logs

* 📝 (main.py): Comment out logger.info statement to prevent unnecessary logging of static files directory setup information.

* 💡 (langflow/__main__.py): Comment out logger.info message for initializing Langflow to reduce noise in logs and improve readability.

* uncomment logs, change to debug

* 📝 (langflow): remove redundant logger info messages in signal handlers and shutdown process
♻️ (langflow): refactor shutdown process to use a progress indicator for better visibility and control
♻️ (langflow): refactor initialization process to remove redundant logger info messages
📝 (langflow): add methods to print shutdown summary and farewell message after shutdown is complete
📝 (langflow): add method to create a progress indicator for shutdown steps
📝 (langflow): add predefined shutdown steps for Langflow shutdown process
📝 (langflow): add method to create a progress indicator with predefined Langflow initialization steps
📝 (langflow): add method to create a progress indicator with predefined Langflow shutdown steps
📝 (langflow): add predefined shutdown steps in reverse order of initialization
📝 (langflow): add predefined initialization steps for Langflow initialization process
📝 (langflow): add method to print a summary of all completed shutdown steps

* 📝 (api/v1/__init__.py): reorganize imports and include_router calls for better readability and maintainability
🔧 (api/v1/__init__.py): update __all__ list to explicitly include all routers for better module encapsulation
💡 (utils.py): add logging statement to indicate building custom components from specified paths

* Fix ordering of operations for windows builds

* use lowercase log levels for uvicorn

* converts log to lower if set from env var

* [autofix.ci] apply automated fixes

* use a subprocess for windows so progress step can complete

* [autofix.ci] apply automated fixes

* test subprocess for windows

* use subprocess for all architectures

* Clean up global vars and simplify shutdown

* [autofix.ci] apply automated fixes

* 📝 (progress.py): add platform check to use different characters and icons based on the operating system for better compatibility and user experience

* 📝 (langflow/__main__.py): use platform-specific characters for icons to prevent encoding issues and improve cross-platform compatibility

* test for windows

* remove print

* move windows blocking call outside of progres step

* [autofix.ci] apply automated fixes

* log cleanup and timeout of teardown

* remove seemingly unnecessary redirect

* [autofix.ci] apply automated fixes

* ruff

* Add init file to cli dir

* ruff:
:

* unused import

* mypy fixes

* mypy fixes

* [autofix.ci] apply automated fixes

* ruff

* [autofix.ci] apply automated fixes

* [autofix.ci] apply automated fixes

* Try underscores so ci doesn't remove

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: cristhianzl <cristhian.lousa@gmail.com>

pyproject.toml

@@ -215,8 +215,8 @@ nv-ingest = [
 ]
 
 postgresql = [
-  "sqlalchemy[postgresql_psycopg2binary]",
+    "sqlalchemy[postgresql_psycopg2binary]>=2.0.38,<3.0.0",
-    "sqlalchemy[postgresql_psycopg]",
+    "sqlalchemy[postgresql_psycopg]>=2.0.38,<3.0.0",
 ]
 
 [project.scripts]

src/backend/base/langflow/__main__.py

@@ -25,6 +25,7 @@ from rich.panel import Panel
 from rich.table import Table
 from sqlmodel import select
 
+from langflow.cli.progress import create_langflow_progress
 from langflow.initial_setup.setup import get_or_create_default_folder
 from langflow.logging.logger import configure, logger
 from langflow.main import setup_app
@@ -40,6 +41,54 @@ console = Console()
 app = typer.Typer(no_args_is_help=True)
 
 
+class ProcessManager:
+    """Manages the lifecycle of the backend process."""
+
+    def __init__(self):
+        self.webapp_process = None
+        self.shutdown_in_progress = False
+
+    # params are required for signal handlers, even if they are not used
+    def handle_sigterm(self, _signum: int, _frame) -> None:
+        """Handle SIGTERM signal gracefully."""
+        if self.shutdown_in_progress:
+            return  # Already shutting down, ignore
+        self.shutdown_in_progress = True
+        self.shutdown()
+
+    # params are required for signal handlers, even if they are not used
+    def handle_sigint(self, _signum: int, _frame) -> None:
+        """Handle SIGINT signal gracefully."""
+        if self.shutdown_in_progress:
+            return  # Already shutting down, ignore
+        self.shutdown_in_progress = True
+        self.shutdown()
+
+    def shutdown(self):
+        """Gracefully shutdown the webapp process."""
+        if self.webapp_process and self.webapp_process.is_alive():
+            # Just terminate the process - the actual shutdown progress is handled
+            # by the FastAPI lifespan context in main.py
+            self.webapp_process.terminate()
+            # The long wait allows the process to finish setup, preventing it from
+            # getting in a state where background tasks continue to do work after termination
+            # is sent.
+            self.webapp_process.join(timeout=30)
+            if self.webapp_process.is_alive():
+                logger.warning("Process didn't terminate gracefully, killing it.")
+                self.webapp_process.kill()
+                self.webapp_process.join()
+        sys.exit(0)
+
+
+# Create a single instance of ProcessManager
+process_manager = ProcessManager()
+
+# Update signal handlers to use the instance methods
+signal.signal(signal.SIGTERM, process_manager.handle_sigterm)
+signal.signal(signal.SIGINT, process_manager.handle_sigint)
+
+
 def get_number_of_workers(workers=None):
     if workers == -1 or workers is None:
         workers = (cpu_count() * 2) + 1
@@ -78,11 +127,19 @@ def set_var_for_macos_issue() -> None:
         logger.debug("Set OBJC_DISABLE_INITIALIZE_FORK_SAFETY to YES to avoid error")
 
 
-def handle_sigterm(signum, frame):  # noqa: ARG001
+def wait_for_server_ready(host, port, protocol) -> None:
-    """Handle SIGTERM signal gracefully."""
+    """Wait for the server to become ready by polling the health endpoint."""
-    logger.info("Received SIGTERM signal. Performing graceful shutdown...")
+    status_code = 0
-    # Raise SystemExit to trigger graceful shutdown
+    while status_code != httpx.codes.OK:
-    sys.exit(0)
+        try:
+            status_code = httpx.get(
+                f"{protocol}://{host}:{port}/health", verify=host not in ("127.0.0.1", "localhost")
+            ).status_code
+        except HTTPError:
+            time.sleep(1)
+        except Exception:  # noqa: BLE001
+            logger.opt(exception=True).debug("Error while waiting for the server to become ready.")
+            time.sleep(1)
 
 
 @app.command()
@@ -103,7 +160,11 @@ def run(
         help="Path to the .env file containing environment variables.",
         show_default=False,
     ),
-    log_level: str | None = typer.Option(None, help="Logging level.", show_default=False),
+    log_level: str | None = typer.Option(
+        None,
+        help="Logging level. One of: [debug, info, warning, error, critical]. Defaults to info.",
+        show_default=False,
+    ),
     log_file: Path | None = typer.Option(None, help="Path to the log file.", show_default=False),
     cache: str | None = typer.Option(  # noqa: ARG001
         None,
@@ -167,17 +228,33 @@ def run(
     ssl_key_file_path: str | None = typer.Option(None, help="Defines the SSL key file path.", show_default=False),
 ) -> None:
     """Run Langflow."""
-    # Register SIGTERM handler
-    signal.signal(signal.SIGTERM, handle_sigterm)
-
     if env_file:
         load_dotenv(env_file, override=True)
 
+    # Set default log level if not provided
+    log_level_str = "info" if log_level is None else log_level.lower()
+
+    # Must set as env var for child process to pick up
+    env_log_level = os.environ.get("LANGFLOW_LOG_LEVEL")
+    if env_log_level is None:
+        os.environ["LANGFLOW_LOG_LEVEL"] = log_level_str
+    else:
+        os.environ["LANGFLOW_LOG_LEVEL"] = env_log_level.lower()
+
     configure(log_level=log_level, log_file=log_file)
+
+    # Create progress indicator (show verbose timing if log level is DEBUG)
+    verbose = log_level == "debug"
+    progress = create_langflow_progress(verbose=verbose)
+
+    # Step 0: Initializing Langflow
+    with progress.step(0):
         logger.debug(f"Loading config from file: '{env_file}'" if env_file else "No env_file provided.")
         set_var_for_macos_issue()
         settings_service = get_settings_service()
 
+    # Step 1: Checking Environment
+    with progress.step(1):
         for key, value in os.environ.items():
             new_key = key.replace("LANGFLOW_", "")
             if hasattr(settings_service.auth_settings, new_key):
@@ -199,6 +276,7 @@ def run(
                 settings_service.auth_settings.set(arg, values[arg])
             logger.debug(f"Loading config from cli parameter '{arg}': '{values[arg]}'")
 
+        # Get final values from settings
         host = settings_service.settings.host
         port = settings_service.settings.port
         workers = settings_service.settings.workers
@@ -206,88 +284,92 @@ def run(
         log_level = settings_service.settings.log_level
         frontend_path = settings_service.settings.frontend_path
         backend_only = settings_service.settings.backend_only
-    ssl_cert_file_path = settings_service.settings.ssl_cert_file if ssl_cert_file_path is None else ssl_cert_file_path
+        ssl_cert_file_path = (
+            settings_service.settings.ssl_cert_file if ssl_cert_file_path is None else ssl_cert_file_path
+        )
         ssl_key_file_path = settings_service.settings.ssl_key_file if ssl_key_file_path is None else ssl_key_file_path
 
         # create path object if frontend_path is provided
         static_files_dir: Path | None = Path(frontend_path) if frontend_path else None
 
+    # Step 2: Starting Core Services
+    with progress.step(2):
         app = setup_app(static_files_dir=static_files_dir, backend_only=backend_only)
+
+    # Step 3: Connecting Database (this happens inside setup_app via dependencies)
+    with progress.step(3):
         # check if port is being used
         if is_port_in_use(port, host):
             port = get_free_port(port)
 
+        protocol = "https" if ssl_cert_file_path and ssl_key_file_path else "http"
+
+    # Step 4: Loading Components (placeholder for components loading)
+    with progress.step(4):
+        pass  # Components are loaded during app startup
+
+    # Step 5: Adding Starter Projects (placeholder for starter projects)
+    if get_settings_service().settings.create_starter_projects:
+        with progress.step(5):
+            pass  # Starter projects are added during app startup
+
+    # Step 6: Launching Langflow
+    if platform.system() == "Windows":
+        with progress.step(6):
+            import uvicorn
+
+            # Print summary and banner before starting the server, since uvicorn is a blocking call.
+            # We _may_ be able to subprocess, but with window's spawn behavior, we'd have to move all
+            # non-picklable code to the subprocess.
+            progress.print_summary()
+            print_banner(host, port, protocol)
+
+        # Blocking call, so must be outside of the progress step
+        uvicorn.run(
+            app,
+            host=host,
+            port=port,
+            log_level=log_level,
+            reload=False,
+            workers=get_number_of_workers(workers),
+            loop="asyncio",
+        )
+    else:
+        with progress.step(6):
+            # Use Gunicorn with LangflowUvicornWorker for non-Windows systems
+            from langflow.server import LangflowApplication
+
             options = {
                 "bind": f"{host}:{port}",
                 "workers": get_number_of_workers(workers),
                 "timeout": worker_timeout,
                 "certfile": ssl_cert_file_path,
                 "keyfile": ssl_key_file_path,
+                "log_level": log_level.lower(),
             }
-    protocol = "https" if options["keyfile"] and options["certfile"] else "http"
+            server = LangflowApplication(app, options)
 
-    # Define an env variable to know if we are just testing the server
+            # Start the webapp process
-    if "pytest" in sys.modules:
+            process_manager.webapp_process = Process(target=server.run)
-        return
+            process_manager.webapp_process.start()
-    process: Process | None = None
-    try:
-        if platform.system() == "Windows":
-            # Run using uvicorn on MacOS and Windows
-            # Windows doesn't support gunicorn
-            # MacOS requires an env variable to be set to use gunicorn
-            run_on_windows(host, port, log_level, options, app, protocol)
-        else:
-            # Run using gunicorn on Linux
-            process = run_on_mac_or_linux(host, port, log_level, options, app, protocol)
-        if open_browser and not backend_only:
-            browser_host = get_best_access_host(host, port)
-            click.launch(f"{protocol}://{browser_host}:{port}")
-        if process:
-            process.join()
-    except (KeyboardInterrupt, SystemExit) as e:
-        logger.info("Shutting down server...")
-        if process is not None:
-            process.terminate()
-            process.join(timeout=15)  # Wait up to 15 seconds for process to terminate
-            if process.is_alive():
-                logger.warning("Process did not terminate gracefully, forcing...")
-                process.kill()
-        raise typer.Exit(0) from e
-    except Exception as e:
-        logger.exception(e)
-        if process is not None:
-            process.terminate()
-        raise typer.Exit(1) from e
 
-
-def wait_for_server_ready(host, port, protocol) -> None:
-    """Wait for the server to become ready by polling the health endpoint."""
-    status_code = 0
-    while status_code != httpx.codes.OK:
-        try:
-            status_code = httpx.get(
-                f"{protocol}://{host}:{port}/health", verify=host not in ("localhost", "127.0.0.1")
-            ).status_code
-        except HTTPError:
-            time.sleep(1)
-        except Exception:  # noqa: BLE001
-            logger.opt(exception=True).debug("Error while waiting for the server to become ready.")
-            time.sleep(1)
-
-
-def run_on_mac_or_linux(host, port, log_level, options, app, protocol):
-    webapp_process = Process(target=run_langflow, args=(host, port, log_level, options, app))
-    webapp_process.start()
             wait_for_server_ready(host, port, protocol)
 
+        # Print summary and banner after server is ready
+        progress.print_summary()
         print_banner(host, port, protocol)
-    return webapp_process
 
+        # Handle browser opening
+        if open_browser and not backend_only:
+            click.launch(f"{protocol}://{host}:{port}")
 
-def run_on_windows(host, port, log_level, options, app, protocol) -> None:
+        try:
-    """Run the Langflow server on Windows."""
+            process_manager.webapp_process.join()
-    print_banner(host, port, protocol)
+        except KeyboardInterrupt:
-    run_langflow(host, port, log_level, options, app)
+            # SIGINT should be handled by the signal handler, but leaving here for safety
+            logger.warning("KeyboardInterrupt caught in main thread")
+        finally:
+            process_manager.shutdown()
 
 
 def is_port_in_use(port, host="localhost"):
@@ -466,9 +548,24 @@ def print_banner(host: str, port: int, protocol: str) -> None:
     )
 
     title = f"[bold]Welcome to {styled_package_name}[/bold]\n"
+
+    # Use Windows-safe characters to prevent encoding issues
+    import platform
+
+    if platform.system() == "Windows":
+        github_icon = "*"
+        discord_icon = "#"
+        arrow = "->"
+        status_icon = "[OK]"
+    else:
+        github_icon = ":star2:"
+        discord_icon = ":speech_balloon:"
+        arrow = "→"
+        status_icon = "🟢"
+
     info_text = (
-        ":star2: GitHub: Star for updates → https://github.com/langflow-ai/langflow\n"
+        f"{github_icon} GitHub: Star for updates {arrow} https://github.com/langflow-ai/langflow\n"
-        ":speech_balloon: Discord: Join for support → https://discord.com/invite/EqksyE2EX9"
+        f"{discord_icon} Discord: Join for support {arrow} https://discord.com/invite/EqksyE2EX9"
     )
     telemetry_text = (
         (
@@ -482,54 +579,13 @@ def print_banner(host: str, port: int, protocol: str) -> None:
         )
     )
     access_host = get_best_access_host(host, port)
-    access_link = f"[bold]🟢 Open Langflow →[/bold] [link={protocol}://{access_host}:{port}]{protocol}://{access_host}:{port}[/link]"
+    access_link = f"[bold]{status_icon} Open Langflow {arrow}[/bold] [link={protocol}://{access_host}:{port}]{protocol}://{access_host}:{port}[/link]"
 
     message = f"{title}\n{info_text}\n\n{telemetry_text}\n\n{access_link}"
 
     console.print(Panel.fit(message, border_style="#7528FC", padding=(1, 2)))
 
 
-def run_langflow(host, port, log_level, options, app) -> None:
-    """Run Langflow server on localhost."""
-    if platform.system() == "Windows":
-        import uvicorn
-
-        uvicorn.run(
-            app,
-            host=host,
-            port=port,
-            log_level=log_level.lower(),
-            loop="asyncio",
-            ssl_keyfile=options["keyfile"],
-            ssl_certfile=options["certfile"],
-        )
-    else:
-        from langflow.server import LangflowApplication
-
-        server = LangflowApplication(app, options)
-
-        def graceful_shutdown(signum, frame):  # noqa: ARG001
-            """Gracefully shutdown the server when receiving SIGTERM."""
-            # Suppress click exceptions during shutdown
-            import click
-
-            click.echo = lambda *args, **kwargs: None  # noqa: ARG005
-
-            logger.info("Gracefully shutting down server...")
-            # For Gunicorn workers, we raise SystemExit to trigger graceful shutdown
-            raise SystemExit(0)
-
-        # Register signal handlers
-        signal.signal(signal.SIGTERM, graceful_shutdown)
-        signal.signal(signal.SIGINT, graceful_shutdown)
-
-        try:
-            server.run()
-        except (KeyboardInterrupt, SystemExit):
-            # Suppress the exception output
-            sys.exit(0)
-
-
 @app.command()
 def superuser(
     username: str = typer.Option(..., prompt=True, help="Username for the superuser."),

src/backend/base/langflow/cli/progress.py

@@ -0,0 +1,225 @@
+import platform
+import sys
+import threading
+import time
+from collections.abc import Generator
+from contextlib import contextmanager
+from typing import Any
+
+import click
+
+MIN_DURATION_THRESHOLD = 0.1  # Minimum duration to show in seconds (100ms)
+
+
+class ProgressIndicator:
+    """A CLI progress indicator that shows user-friendly step-by-step progress.
+
+    Shows animated loading indicators (□ → ■) for each step of the initialization process.
+    """
+
+    def __init__(self, *, verbose: bool = False):
+        self.verbose = verbose
+        self.steps: list[dict[str, Any]] = []
+        self.current_step = 0
+        self.running = False
+        self._stop_animation = False
+        self._animation_thread: threading.Thread | None = None
+
+        # Use Windows-safe characters on Windows to prevent encoding issues
+        if platform.system() == "Windows":
+            self._animation_chars = ["-", "\\", "|", "/"]  # ASCII spinner
+            self._success_icon = "+"  # ASCII plus sign
+            self._failure_icon = "x"  # ASCII x
+            self._farewell_emoji = ":)"  # ASCII smiley
+        else:
+            self._animation_chars = ["□", "▢", "▣", "■"]  # Unicode squares
+            self._success_icon = "✓"  # Unicode checkmark
+            self._failure_icon = "✗"  # Unicode cross
+            self._farewell_emoji = "👋"  # Unicode wave
+
+        self._animation_index = 0
+
+    def add_step(self, title: str, description: str = "") -> None:
+        """Add a step to the progress indicator."""
+        self.steps.append(
+            {
+                "title": title,
+                "description": description,
+                "status": "pending",  # pending, running, completed, failed
+                "start_time": None,
+                "end_time": None,
+            }
+        )
+
+    def _animate_step(self, step_index: int) -> None:
+        """Animate the current step with rotating square characters."""
+        if step_index >= len(self.steps):
+            return
+
+        step = self.steps[step_index]
+
+        while self.running and step["status"] == "running" and not self._stop_animation:
+            # Clear the current line and move cursor to beginning
+            sys.stdout.write("\r")
+
+            # Show the animated character
+            animation_char = self._animation_chars[self._animation_index]
+
+            # Print the step with animation
+            line = f"{animation_char} {step['title']}..."
+            sys.stdout.write(line)
+            sys.stdout.flush()
+
+            # Update animation
+            self._animation_index = (self._animation_index + 1) % len(self._animation_chars)
+
+            time.sleep(0.15)  # Animation speed
+
+    def start_step(self, step_index: int) -> None:
+        """Start a specific step and begin animation."""
+        if step_index >= len(self.steps):
+            return
+
+        self.current_step = step_index
+        step = self.steps[step_index]
+        step["status"] = "running"
+        step["start_time"] = time.time()
+
+        self.running = True
+        self._stop_animation = False
+
+        # Start animation in a separate thread
+        self._animation_thread = threading.Thread(target=self._animate_step, args=(step_index,))
+        self._animation_thread.daemon = True
+        self._animation_thread.start()
+
+    def complete_step(self, step_index: int, *, success: bool = True) -> None:
+        """Complete a step and stop its animation."""
+        if step_index >= len(self.steps):
+            return
+
+        step = self.steps[step_index]
+        step["status"] = "completed" if success else "failed"
+        step["end_time"] = time.time()
+
+        # Stop animation
+        self._stop_animation = True
+        if self._animation_thread and self._animation_thread.is_alive():
+            self._animation_thread.join(timeout=0.5)
+
+        self.running = False
+
+        # Clear the current line and print final result
+        sys.stdout.write("\r")
+
+        if success:
+            icon = click.style(self._success_icon, fg="green", bold=True)
+            title = click.style(step["title"], fg="green")
+        else:
+            icon = click.style(self._failure_icon, fg="red", bold=True)
+            title = click.style(step["title"], fg="red")
+
+        duration = ""
+        if step["start_time"] and step["end_time"]:
+            elapsed = step["end_time"] - step["start_time"]
+            if self.verbose and elapsed > MIN_DURATION_THRESHOLD:  # Only show duration if verbose and > 100ms
+                duration = click.style(f" ({elapsed:.2f}s)", fg="bright_black")
+
+        line = f"{icon} {title}{duration}"
+        click.echo(line)
+
+    def fail_step(self, step_index: int, error_msg: str = "") -> None:
+        """Mark a step as failed."""
+        self.complete_step(step_index, success=False)
+        if error_msg and self.verbose:
+            click.echo(click.style(f"   Error: {error_msg}", fg="red"))
+
+    @contextmanager
+    def step(self, step_index: int) -> Generator[None, None, None]:
+        """Context manager for running a step with automatic completion."""
+        try:
+            self.start_step(step_index)
+            yield
+            self.complete_step(step_index, success=True)
+        except Exception as e:
+            error_msg = str(e) if self.verbose else ""
+            self.fail_step(step_index, error_msg)
+            raise
+
+    def print_summary(self) -> None:
+        """Print a summary of all completed steps."""
+        if not self.verbose:
+            return
+
+        completed_steps = [s for s in self.steps if s["status"] in ["completed", "failed"]]
+        if not completed_steps:
+            return
+
+        total_time = sum(
+            (s["end_time"] - s["start_time"]) for s in completed_steps if s["start_time"] and s["end_time"]
+        )
+
+        click.echo()
+        click.echo(click.style(f"Total initialization time: {total_time:.2f}s", fg="bright_black"))
+
+    def print_shutdown_summary(self) -> None:
+        """Print a summary of all completed shutdown steps."""
+        if not self.verbose:
+            return
+
+        completed_steps = [s for s in self.steps if s["status"] in ["completed", "failed"]]
+        if not completed_steps:
+            return
+
+        total_time = sum(
+            (s["end_time"] - s["start_time"]) for s in completed_steps if s["start_time"] and s["end_time"]
+        )
+
+        click.echo()
+        click.echo(click.style(f"Total shutdown time: {total_time:.2f}s", fg="bright_black"))
+
+    def print_farewell_message(self) -> None:
+        """Print a nice farewell message after shutdown is complete."""
+        click.echo()
+        farewell = click.style(f"{self._farewell_emoji} See you next time!", fg="bright_blue", bold=True)
+        click.echo(farewell)
+
+
+def create_langflow_progress(*, verbose: bool = False) -> ProgressIndicator:
+    """Create a progress indicator with predefined Langflow initialization steps."""
+    progress = ProgressIndicator(verbose=verbose)
+
+    # Define the initialization steps matching the order in main.py
+    steps = [
+        ("Initializing Langflow", "Setting up basic configuration"),
+        ("Checking Environment", "Loading environment variables and settings"),
+        ("Starting Core Services", "Initializing database and core services"),
+        ("Connecting Database", "Setting up database connection and migrations"),
+        ("Loading Components", "Caching component types and custom components"),
+        ("Adding Starter Projects", "Creating or updating starter project templates"),
+        ("Launching Langflow", "Starting server and final setup"),
+    ]
+
+    for title, description in steps:
+        progress.add_step(title, description)
+
+    return progress
+
+
+def create_langflow_shutdown_progress(*, verbose: bool = False) -> ProgressIndicator:
+    """Create a progress indicator with predefined Langflow shutdown steps."""
+    progress = ProgressIndicator(verbose=verbose)
+
+    # Define the shutdown steps in reverse order of initialization
+    steps = [
+        ("Stopping Server", "Gracefully stopping the web server"),
+        ("Cancelling Background Tasks", "Stopping file synchronization and background jobs"),
+        ("Cleaning Up Services", "Teardown database connections and services"),
+        ("Clearing Temporary Files", "Removing temporary directories and cache"),
+        ("Finalizing Shutdown", "Completing cleanup and logging"),
+    ]
+
+    for title, description in steps:
+        progress.add_step(title, description)
+
+    return progress

src/backend/base/langflow/custom/utils.py

@@ -536,6 +536,7 @@ def build_custom_components(components_paths: list[str]):
         return {}
 
     logger.info(f"Building custom components from {components_paths}")
+
     custom_components_from_file: dict = {}
     processed_paths = set()
     for path in components_paths:
@@ -546,7 +547,7 @@ def build_custom_components(components_paths: list[str]):
         custom_component_dict = build_custom_component_list_from_path(path_str)
         if custom_component_dict:
             category = next(iter(custom_component_dict))
-            logger.info(f"Loading {len(custom_component_dict[category])} component(s) from category {category}")
+            logger.debug(f"Loading {len(custom_component_dict[category])} component(s) from category {category}")
             custom_components_from_file = merge_nested_dicts_with_renaming(
                 custom_components_from_file, custom_component_dict
             )
@@ -560,7 +561,7 @@ async def abuild_custom_components(components_paths: list[str]):
     if not components_paths:
         return {}
 
-    logger.info(f"Building custom components from {components_paths}")
+    logger.debug(f"Building custom components from {components_paths}")
     custom_components_from_file: dict = {}
     processed_paths = set()
     for path in components_paths:
@@ -571,7 +572,7 @@ async def abuild_custom_components(components_paths: list[str]):
         custom_component_dict = await abuild_custom_component_list_from_path(path_str)
         if custom_component_dict:
             category = next(iter(custom_component_dict))
-            logger.info(f"Loading {len(custom_component_dict[category])} component(s) from category {category}")
+            logger.debug(f"Loading {len(custom_component_dict[category])} component(s) from category {category}")
             custom_components_from_file = merge_nested_dicts_with_renaming(
                 custom_components_from_file, custom_component_dict
             )

src/backend/base/langflow/initial_setup/setup.py

@@ -1015,7 +1015,7 @@ async def initialize_super_user_if_needed() -> None:
         super_user = await create_super_user(db=async_session, username=username, password=password)
         await get_variable_service().initialize_user_variables(super_user.id, async_session)
         _ = await get_or_create_default_folder(async_session, super_user.id)
-    logger.info("Super user initialized")
+    logger.debug("Super user initialized")
 
 
 async def get_or_create_default_folder(session: AsyncSession, user_id: UUID) -> FolderRead:
@@ -1058,6 +1058,7 @@ async def get_or_create_default_folder(session: AsyncSession, user_id: UUID) ->
 async def sync_flows_from_fs():
     flow_mtimes = {}
     fs_flows_polling_interval = get_settings_service().settings.fs_flows_polling_interval / 1000
+    try:
         while True:
             try:
                 async with session_scope() as session:
@@ -1084,6 +1085,18 @@ async def sync_flows_from_fs():
                                     flow_mtimes[flow.id] = new_mtime
                         except Exception:  # noqa: BLE001
                             logger.exception(f"Error while handling flow file {path}")
+            except asyncio.CancelledError:
+                logger.debug("Flow sync cancelled")
+                break
+            except (sa.exc.OperationalError, ValueError) as e:
+                if "no active connection" in str(e) or "connection is closed" in str(e):
+                    logger.debug("Database connection lost, assuming shutdown")
+                    break  # Exit gracefully, don't error
+                raise  # Re-raise if it's a real connection problem
             except Exception:  # noqa: BLE001
                 logger.exception("Error while syncing flows from database")
+                break
+
             await asyncio.sleep(fs_flows_polling_interval)
+    except asyncio.CancelledError:
+        logger.debug("Flow sync task cancelled")

src/backend/base/langflow/main.py

@@ -11,6 +11,7 @@ from urllib.parse import urlencode
 
 import anyio
 import httpx
+import sqlalchemy
 from fastapi import FastAPI, HTTPException, Request, Response, status
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import FileResponse, JSONResponse
@@ -124,6 +125,7 @@ def get_lifespan(*, fix_migration=False, version=None):
 
         temp_dirs: list[TemporaryDirectory] = []
         sync_flows_from_fs_task = None
+
         try:
             start_time = asyncio.get_event_loop().time()
 
@@ -180,26 +182,69 @@ def get_lifespan(*, fix_migration=False, version=None):
             logger.debug(f"Total initialization time: {total_time:.2f}s")
             yield
 
+        except asyncio.CancelledError:
+            logger.debug("Lifespan received cancellation signal")
         except Exception as exc:
             if "langflow migration --fix" not in str(exc):
                 logger.exception(exc)
             raise
         finally:
-            # Clean shutdown
+            # Clean shutdown with progress indicator
-            logger.info("Cleaning up resources...")
+            # Create shutdown progress (show verbose timing if log level is DEBUG)
+            from langflow.cli.progress import create_langflow_shutdown_progress
+
+            log_level = os.getenv("LANGFLOW_LOG_LEVEL", "info").lower()
+            shutdown_progress = create_langflow_shutdown_progress(verbose=log_level == "debug")
+
+            try:
+                # Step 0: Stopping Server
+                with shutdown_progress.step(0):
+                    logger.debug("Stopping server gracefully...")
+                    # The actual server stopping is handled by the lifespan context
+                    await asyncio.sleep(0.1)  # Brief pause for visual effect
+
+                # Step 1: Cancelling Background Tasks
+                with shutdown_progress.step(1):
                     if sync_flows_from_fs_task:
                         sync_flows_from_fs_task.cancel()
                         await asyncio.wait([sync_flows_from_fs_task])
-            await teardown_services()
 
-            await asyncio.sleep(0.1)  # let logger flush async logs
+                # Step 2: Cleaning Up Services
-            await logger.complete()
+                with shutdown_progress.step(2):
+                    try:
+                        await asyncio.wait_for(teardown_services(), timeout=10)
+                    except asyncio.TimeoutError:
+                        logger.warning("Teardown services timed out.")
 
+                # Step 3: Clearing Temporary Files
+                with shutdown_progress.step(3):
                     temp_dir_cleanups = [asyncio.to_thread(temp_dir.cleanup) for temp_dir in temp_dirs]
                     await asyncio.gather(*temp_dir_cleanups)
-            # Final message
+
+                # Step 4: Finalizing Shutdown
+                with shutdown_progress.step(4):
                     logger.debug("Langflow shutdown complete")
 
+                # Show completion summary and farewell
+                shutdown_progress.print_shutdown_summary()
+                shutdown_progress.print_farewell_message()
+
+            except (sqlalchemy.exc.OperationalError, sqlalchemy.exc.DBAPIError) as e:
+                # Case where the database connection is closed during shutdown
+                logger.warning(f"Database teardown failed due to closed connection: {e}")
+            except asyncio.CancelledError:
+                # Swallow this - it's normal during shutdown
+                logger.debug("Teardown cancelled during shutdown.")
+            except Exception as e:  # noqa: BLE001
+                logger.exception(f"Unhandled error during cleanup: {e}")
+
+            try:
+                await asyncio.shield(asyncio.sleep(0.1))  # let logger flush async logs
+                await asyncio.shield(logger.complete())
+            except asyncio.CancelledError:
+                # Cancellation during logger flush is possible during shutdown, so we swallow it
+                pass
+
     return lifespan
 
 
@@ -369,7 +414,6 @@ def get_static_files_dir():
 def setup_app(static_files_dir: Path | None = None, *, backend_only: bool = False) -> FastAPI:
     """Setup the FastAPI app."""
     # get the directory of the current file
-    logger.info(f"Setting up app with static files directory {static_files_dir}")
     if not static_files_dir:
         static_files_dir = get_static_files_dir()
 
@@ -377,6 +421,7 @@ def setup_app(static_files_dir: Path | None = None, *, backend_only: bool = Fals
         msg = f"Static files directory {static_files_dir} does not exist."
         raise RuntimeError(msg)
     app = create_app()
+
     if not backend_only and static_files_dir is not None:
         setup_static_files(app, static_files_dir)
     return app

src/backend/base/langflow/server.py

@@ -25,7 +25,6 @@ class LangflowUvicornWorker(UvicornWorker):
 
     def handle_exit(self, sig, frame):
         if not self._has_exited:
-            print("👋 See you next time!")  # noqa: T201
             self._has_exited = True
 
         super().handle_exit(sig, frame)
@@ -46,6 +45,9 @@ class Logger(glogging.Logger):
 
     def __init__(self, cfg) -> None:
         super().__init__(cfg)
+        logging.getLogger("gunicorn.error").setLevel(logging.WARNING)
+        logging.getLogger("gunicorn.access").setLevel(logging.WARNING)
+
         logging.getLogger("gunicorn.error").handlers = [InterceptHandler()]
         logging.getLogger("gunicorn.access").handlers = [InterceptHandler()]
 

src/backend/base/langflow/services/database/service.py

@@ -310,7 +310,6 @@ class DatabaseService(Service):
         command.ensure_version(alembic_cfg)
         # alembic_cfg.attributes["connection"].commit()
         command.upgrade(alembic_cfg, "head")
-        logger.info("Alembic initialized")
 
     def _run_migrations(self, should_initialize_alembic, fix) -> None:
         # First we need to check if alembic has been initialized
@@ -336,9 +335,7 @@ class DatabaseService(Service):
                     logger.exception(msg)
                     raise RuntimeError(msg) from exc
             else:
-                logger.info("Alembic initialized")
+                logger.debug("Alembic initialized")
-
-            logger.info(f"Running DB migrations in {self.script_location}")
 
             try:
                 buffer.write(f"{datetime.now(tz=timezone.utc).astimezone().isoformat()}: Checking migrations\n")

src/backend/base/langflow/services/manager.py

@@ -89,7 +89,7 @@ class ServiceManager:
 
     async def teardown(self) -> None:
         """Teardown all the services."""
-        for service in self.services.values():
+        for service in list(self.services.values()):
             if service is None:
                 continue
             logger.debug(f"Teardown service {service.name}")

src/backend/base/langflow/services/settings/base.py

@@ -429,8 +429,14 @@ class Settings(BaseSettings):
                     logger.debug(f"Appending {langflow_component_path} to components_path")
 
         if not value:
-            value = []
+            value = [BASE_COMPONENTS_PATH]
-            logger.debug("Setting empty components path")
+            logger.debug("Setting default components path to components_path")
+        else:
+            if isinstance(value, Path):
+                value = [str(value)]
+            elif isinstance(value, list):
+                value = [str(p) if isinstance(p, Path) else p for p in value]
+            logger.debug("Adding default components path to components_path")
 
         logger.debug(f"Components path: {value}")
         return value

src/backend/base/langflow/services/utils.py

@@ -131,17 +131,12 @@ async def teardown_superuser(settings_service, session: AsyncSession) -> None:
 
 async def teardown_services() -> None:
     """Teardown all the services."""
-    try:
     async with get_db_service().with_session() as session:
         await teardown_superuser(get_settings_service(), session)
-    except Exception as exc:  # noqa: BLE001
+
-        logger.exception(exc)
-    try:
     from langflow.services.manager import service_manager
 
     await service_manager.teardown()
-    except Exception as exc:  # noqa: BLE001
-        logger.exception(exc)
 
 
 def initialize_settings_service() -> None:

src/backend/base/langflow/services/variable/service.py

@@ -29,10 +29,9 @@ class DatabaseVariableService(VariableService, Service):
 
     async def initialize_user_variables(self, user_id: UUID | str, session: AsyncSession) -> None:
         if not self.settings_service.settings.store_environment_variables:
-            logger.info("Skipping environment variable storage.")
+            logger.debug("Skipping environment variable storage.")
             return
 
-        logger.info("Storing environment variables in the database.")
         for var_name in self.settings_service.settings.variables_to_get_from_environment:
             if var_name in os.environ and os.environ[var_name].strip():
                 value = os.environ[var_name].strip()
@@ -50,7 +49,7 @@ class DatabaseVariableService(VariableService, Service):
                             type_=CREDENTIAL_TYPE,
                             session=session,
                         )
-                    logger.info(f"Processed {var_name} variable from environment.")
+                    logger.debug(f"Processed {var_name} variable from environment.")
                 except Exception as e:  # noqa: BLE001
                     logger.exception(f"Error processing {var_name} variable: {e!s}")
 

src/backend/base/pyproject.toml

@@ -236,10 +236,10 @@ audio = [
 ]
 
 postgresql = [
-  "sqlalchemy[postgresql_psycopg2binary]",
+    "sqlalchemy[postgresql_psycopg2binary]>=2.0.38,<3.0.0",
-    "sqlalchemy[postgresql_psycopg]",
+    "sqlalchemy[postgresql_psycopg]>=2.0.38,<3.0.0",
-
 ]
+
 local = [
     "llama-cpp-python>=0.2.0",
     "sentence-transformers>=2.0.0",