Upload 3 files

main.py

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+
+import os
+import openai
+import streamlit as st
+from openai import OpenAI
+
+openai.api_key = os.environ['OPENAI_API_KEY']
+
+from openai import OpenAI
+client = OpenAI(
+    api_key=os.environ['OPENAI_API_KEY'],  # this is also the default, it can be omitted
+)
+
+# Function to generate the recipe and detailed instructions
+def create_dish_prompt(ingredients):
+    prompt = "Make a dish with the following ingredients: " + ', '.join(
+        ingredients) + ".\nWrite down the title, detailed recipe, and a description of the image you want to generate.\n"
+    return prompt
+
+
+# Function to generate the image
+def generate_dalle_image(recipe_title):
+    response = client.images.generate(
+        model="dall-e-3",
+        prompt=recipe_title,
+        size="1024x1024",
+        quality="standard",
+        n=1,
+    )
+    url = response.data[0].url if response.data else None
+    return url
+
+
+# Initialize Streamlit
+
+st.image("logo 3.jpg")
+st.title("AutoChef.AI")
+
+# Create a text input box for users to input ingredients
+ingredients = st.text_input("Enter your ingredients (comma-separated):", "")
+
+# Check if the user has entered ingredients and clicked on the 'Generate Recipe' button
+if ingredients:
+    # Convert the input string into a list of ingredients
+    list_of_ingredients = [item.strip() for item in ingredients.split(',')]
+
+    # Call your existing functions to generate the recipe and image
+    recipe = create_dish_prompt(list_of_ingredients)
+    completion = client.chat.completions.create(
+        messages=[
+            {
+                "role": "user",
+                "content": recipe,
+            }
+        ],
+        model="gpt-3.5-turbo",
+    )
+    content = completion.choices[0].message.content
+    split_content = content.split('\n', 1)
+    recipe_title = split_content[0].strip()
+    detailed_recipe = split_content[1].strip()
+    url = generate_dalle_image(recipe_title)
+
+    # Display the recipe title and detailed recipe
+    st.title(recipe_title)
+    st.subheader("A comprehensive culinary guide outlining the step-by-step procedure for preparing a dish.")
+    st.write(detailed_recipe)
+
+    # Display the image if a URL exists
+    if url:
+        st.image(url)
+    else:
+        st.write("No image URL generated.")
+else:
+    st.write("Please enter the ingredients and click on the 'Generate Recipe' button.")
+
+    # Code for your app
+# st.title("Streamlit(app).py")
+#
+# # Code to display the app address
+# local_url = f"http://localhost:8501"
+# st.text(f"View this app at {local_url}")
+
+

runtime.py

@@ -0,0 +1,749 @@
+# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+#
+# Licensed 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.
+
+from __future__ import annotations
+
+import asyncio
+import time
+import traceback
+from dataclasses import dataclass, field
+from enum import Enum
+from typing import TYPE_CHECKING, Awaitable, Dict, NamedTuple, Optional, Tuple, Type
+
+from typing_extensions import Final
+
+from streamlit import config
+from streamlit.logger import get_logger
+from streamlit.proto.BackMsg_pb2 import BackMsg
+from streamlit.proto.ForwardMsg_pb2 import ForwardMsg
+from streamlit.runtime.app_session import AppSession
+from streamlit.runtime.caching import (
+    get_data_cache_stats_provider,
+    get_resource_cache_stats_provider,
+)
+from streamlit.runtime.caching.storage.local_disk_cache_storage import (
+    LocalDiskCacheStorageManager,
+)
+from streamlit.runtime.forward_msg_cache import (
+    ForwardMsgCache,
+    create_reference_msg,
+    populate_hash_if_needed,
+)
+from streamlit.runtime.legacy_caching.caching import _mem_caches
+from streamlit.runtime.media_file_manager import MediaFileManager
+from streamlit.runtime.media_file_storage import MediaFileStorage
+from streamlit.runtime.memory_session_storage import MemorySessionStorage
+from streamlit.runtime.runtime_util import is_cacheable_msg
+from streamlit.runtime.script_data import ScriptData
+from streamlit.runtime.scriptrunner.script_cache import ScriptCache
+from streamlit.runtime.session_manager import (
+    ActiveSessionInfo,
+    SessionClient,
+    SessionClientDisconnectedError,
+    SessionManager,
+    SessionStorage,
+)
+from streamlit.runtime.state import (
+    SCRIPT_RUN_WITHOUT_ERRORS_KEY,
+    SessionStateStatProvider,
+)
+from streamlit.runtime.stats import StatsManager
+from streamlit.runtime.uploaded_file_manager import UploadedFileManager
+from streamlit.runtime.websocket_session_manager import WebsocketSessionManager
+from streamlit.watcher import LocalSourcesWatcher
+
+if TYPE_CHECKING:
+    from streamlit.runtime.caching.storage import CacheStorageManager
+
+# Wait for the script run result for 60s and if no result is available give up
+SCRIPT_RUN_CHECK_TIMEOUT: Final = 60
+
+LOGGER: Final = get_logger(__name__)
+
+
+class RuntimeStoppedError(Exception):
+    """Raised by operations on a Runtime instance that is stopped."""
+
+
+@dataclass(frozen=True)
+class RuntimeConfig:
+    """Config options for StreamlitRuntime."""
+
+    # The filesystem path of the Streamlit script to run.
+    script_path: str
+
+    # The (optional) command line that Streamlit was started with
+    # (e.g. "streamlit run app.py")
+    command_line: Optional[str]
+
+    # The storage backend for Streamlit's MediaFileManager.
+    media_file_storage: MediaFileStorage
+
+    # The upload file manager
+    uploaded_file_manager: UploadedFileManager
+
+    # The cache storage backend for Streamlit's st.cache_data.
+    cache_storage_manager: CacheStorageManager = field(
+        default_factory=LocalDiskCacheStorageManager
+    )
+
+    # The SessionManager class to be used.
+    session_manager_class: Type[SessionManager] = WebsocketSessionManager
+
+    # The SessionStorage instance for the SessionManager to use.
+    session_storage: SessionStorage = field(default_factory=MemorySessionStorage)
+
+
+class RuntimeState(Enum):
+    INITIAL = "INITIAL"
+    NO_SESSIONS_CONNECTED = "NO_SESSIONS_CONNECTED"
+    ONE_OR_MORE_SESSIONS_CONNECTED = "ONE_OR_MORE_SESSIONS_CONNECTED"
+    STOPPING = "STOPPING"
+    STOPPED = "STOPPED"
+
+
+class AsyncObjects(NamedTuple):
+    """Container for all asyncio objects that Runtime manages.
+    These cannot be initialized until the Runtime's eventloop is assigned.
+    """
+
+    # The eventloop that Runtime is running on.
+    eventloop: asyncio.AbstractEventLoop
+
+    # Set after Runtime.stop() is called. Never cleared.
+    must_stop: asyncio.Event
+
+    # Set when a client connects; cleared when we have no connected clients.
+    has_connection: asyncio.Event
+
+    # Set after a ForwardMsg is enqueued; cleared when we flush ForwardMsgs.
+    need_send_data: asyncio.Event
+
+    # Completed when the Runtime has started.
+    started: asyncio.Future[None]
+
+    # Completed when the Runtime has stopped.
+    stopped: asyncio.Future[None]
+
+
+class Runtime:
+    _instance: Optional[Runtime] = None
+
+    @classmethod
+    def instance(cls) -> Runtime:
+        """Return the singleton Runtime instance. Raise an Error if the
+        Runtime hasn't been created yet.
+        """
+        if cls._instance is None:
+            raise RuntimeError("Runtime hasn't been created!")
+        return cls._instance
+
+    @classmethod
+    def exists(cls) -> bool:
+        """True if the singleton Runtime instance has been created.
+
+        When a Streamlit app is running in "raw mode" - that is, when the
+        app is run via `python app.py` instead of `streamlit run app.py` -
+        the Runtime will not exist, and various Streamlit functions need
+        to adapt.
+        """
+        return cls._instance is not None
+
+    def __init__(self, config: RuntimeConfig):
+        """Create a Runtime instance. It won't be started yet.
+
+        Runtime is *not* thread-safe. Its public methods are generally
+        safe to call only on the same thread that its event loop runs on.
+
+        Parameters
+        ----------
+        config
+            Config options.
+        """
+        if Runtime._instance is not None:
+            raise RuntimeError("Runtime instance already exists!")
+        Runtime._instance = self
+
+        # Will be created when we start.
+        self._async_objs: Optional[AsyncObjects] = None
+
+        # The task that runs our main loop. We need to save a reference
+        # to it so that it doesn't get garbage collected while running.
+        self._loop_coroutine_task: Optional[asyncio.Task[None]] = None
+
+        self._main_script_path = config.script_path
+        self._command_line = config.command_line or ""
+
+        self._state = RuntimeState.INITIAL
+
+        # Initialize managers
+        self._message_cache = ForwardMsgCache()
+        self._uploaded_file_mgr = config.uploaded_file_manager
+        self._media_file_mgr = MediaFileManager(storage=config.media_file_storage)
+        self._cache_storage_manager = config.cache_storage_manager
+        self._script_cache = ScriptCache()
+
+        self._session_mgr = config.session_manager_class(
+            session_storage=config.session_storage,
+            uploaded_file_manager=self._uploaded_file_mgr,
+            script_cache=self._script_cache,
+            message_enqueued_callback=self._enqueued_some_message,
+        )
+
+        self._stats_mgr = StatsManager()
+        self._stats_mgr.register_provider(get_data_cache_stats_provider())
+        self._stats_mgr.register_provider(get_resource_cache_stats_provider())
+        self._stats_mgr.register_provider(_mem_caches)
+        self._stats_mgr.register_provider(self._message_cache)
+        self._stats_mgr.register_provider(self._uploaded_file_mgr)
+        self._stats_mgr.register_provider(SessionStateStatProvider(self._session_mgr))
+
+    @property
+    def state(self) -> RuntimeState:
+        return self._state
+
+    @property
+    def message_cache(self) -> ForwardMsgCache:
+        return self._message_cache
+
+    @property
+    def uploaded_file_mgr(self) -> UploadedFileManager:
+        return self._uploaded_file_mgr
+
+    @property
+    def cache_storage_manager(self) -> CacheStorageManager:
+        return self._cache_storage_manager
+
+    @property
+    def media_file_mgr(self) -> MediaFileManager:
+        return self._media_file_mgr
+
+    @property
+    def stats_mgr(self) -> StatsManager:
+        return self._stats_mgr
+
+    @property
+    def stopped(self) -> Awaitable[None]:
+        """A Future that completes when the Runtime's run loop has exited."""
+        return self._get_async_objs().stopped
+
+    # NOTE: A few Runtime methods listed as threadsafe (get_client and
+    # is_active_session) currently rely on the implementation detail that
+    # WebsocketSessionManager's get_active_session_info and is_active_session methods
+    # happen to be threadsafe. This may change with future SessionManager implementations,
+    # at which point we'll need to formalize our thread safety rules for each
+    # SessionManager method.
+    def get_client(self, session_id: str) -> Optional[SessionClient]:
+        """Get the SessionClient for the given session_id, or None
+        if no such session exists.
+
+        Notes
+        -----
+        Threading: SAFE. May be called on any thread.
+        """
+        session_info = self._session_mgr.get_active_session_info(session_id)
+        if session_info is None:
+            return None
+        return session_info.client
+
+    async def start(self) -> None:
+        """Start the runtime. This must be called only once, before
+        any other functions are called.
+
+        When this coroutine returns, Streamlit is ready to accept new sessions.
+
+        Notes
+        -----
+        Threading: UNSAFE. Must be called on the eventloop thread.
+        """
+
+        # Create our AsyncObjects. We need to have a running eventloop to
+        # instantiate our various synchronization primitives.
+        async_objs = AsyncObjects(
+            eventloop=asyncio.get_running_loop(),
+            must_stop=asyncio.Event(),
+            has_connection=asyncio.Event(),
+            need_send_data=asyncio.Event(),
+            started=asyncio.Future(),
+            stopped=asyncio.Future(),
+        )
+        self._async_objs = async_objs
+
+        self._loop_coroutine_task = asyncio.create_task(
+            self._loop_coroutine(), name="Runtime.loop_coroutine"
+        )
+
+        await async_objs.started
+
+    def stop(self) -> None:
+        """Request that Streamlit close all sessions and stop running.
+        Note that Streamlit won't stop running immediately.
+
+        Notes
+        -----
+        Threading: SAFE. May be called from any thread.
+        """
+
+        async_objs = self._get_async_objs()
+
+        def stop_on_eventloop():
+            if self._state in (RuntimeState.STOPPING, RuntimeState.STOPPED):
+                return
+
+            LOGGER.debug("Runtime stopping...")
+            self._set_state(RuntimeState.STOPPING)
+            async_objs.must_stop.set()
+
+        async_objs.eventloop.call_soon_threadsafe(stop_on_eventloop)
+
+    def is_active_session(self, session_id: str) -> bool:
+        """True if the session_id belongs to an active session.
+
+        Notes
+        -----
+        Threading: SAFE. May be called on any thread.
+        """
+        return self._session_mgr.is_active_session(session_id)
+
+    def connect_session(
+        self,
+        client: SessionClient,
+        user_info: Dict[str, Optional[str]],
+        existing_session_id: Optional[str] = None,
+        session_id_override: Optional[str] = None,
+    ) -> str:
+        """Create a new session (or connect to an existing one) and return its unique ID.
+
+        Parameters
+        ----------
+        client
+            A concrete SessionClient implementation for communicating with
+            the session's client.
+        user_info
+            A dict that contains information about the session's user. For now,
+            it only (optionally) contains the user's email address.
+
+            {
+                "email": "example@example.com"
+            }
+        existing_session_id
+            The ID of an existing session to reconnect to. If one is not provided, a new
+            session is created. Note that whether the Runtime's SessionManager supports
+            reconnecting to an existing session depends on the SessionManager that this
+            runtime is configured with.
+        session_id_override
+            The ID to assign to a new session being created with this method. Setting
+            this can be useful when the service that a Streamlit Runtime is running in
+            wants to tie the lifecycle of a Streamlit session to some other session-like
+            object that it manages. Only one of existing_session_id and
+            session_id_override should be set.
+
+        Returns
+        -------
+        str
+            The session's unique string ID.
+
+        Notes
+        -----
+        Threading: UNSAFE. Must be called on the eventloop thread.
+        """
+        assert not (
+            existing_session_id and session_id_override
+        ), "Only one of existing_session_id and session_id_override should be set!"
+
+        if self._state in (RuntimeState.STOPPING, RuntimeState.STOPPED):
+            raise RuntimeStoppedError(f"Can't connect_session (state={self._state})")
+
+        session_id = self._session_mgr.connect_session(
+            client=client,
+            script_data=ScriptData(self._main_script_path, self._command_line or ""),
+            user_info=user_info,
+            existing_session_id=existing_session_id,
+            session_id_override=session_id_override,
+        )
+        self._set_state(RuntimeState.ONE_OR_MORE_SESSIONS_CONNECTED)
+        self._get_async_objs().has_connection.set()
+
+        return session_id
+
+    def create_session(
+        self,
+        client: SessionClient,
+        user_info: Dict[str, Optional[str]],
+        existing_session_id: Optional[str] = None,
+        session_id_override: Optional[str] = None,
+    ) -> str:
+        """Create a new session (or connect to an existing one) and return its unique ID.
+
+        Notes
+        -----
+        This method is simply an alias for connect_session added for backwards
+        compatibility.
+        """
+        LOGGER.warning("create_session is deprecated! Use connect_session instead.")
+        return self.connect_session(
+            client=client,
+            user_info=user_info,
+            existing_session_id=existing_session_id,
+            session_id_override=session_id_override,
+        )
+
+    def close_session(self, session_id: str) -> None:
+        """Close and completely shut down a session.
+
+        This differs from disconnect_session in that it always completely shuts down a
+        session, permanently losing any associated state (session state, uploaded files,
+        etc.).
+
+        This function may be called multiple times for the same session,
+        which is not an error. (Subsequent calls just no-op.)
+
+        Parameters
+        ----------
+        session_id
+            The session's unique ID.
+
+        Notes
+        -----
+        Threading: UNSAFE. Must be called on the eventloop thread.
+        """
+        session_info = self._session_mgr.get_session_info(session_id)
+        if session_info:
+            self._message_cache.remove_refs_for_session(session_info.session)
+            self._session_mgr.close_session(session_id)
+        self._on_session_disconnected()
+
+    def disconnect_session(self, session_id: str) -> None:
+        """Disconnect a session. It will stop producing ForwardMsgs.
+
+        Differs from close_session because disconnected sessions can be reconnected to
+        for a brief window (depending on the SessionManager/SessionStorage
+        implementations used by the runtime).
+
+        This function may be called multiple times for the same session,
+        which is not an error. (Subsequent calls just no-op.)
+
+        Parameters
+        ----------
+        session_id
+            The session's unique ID.
+
+        Notes
+        -----
+        Threading: UNSAFE. Must be called on the eventloop thread.
+        """
+        session_info = self._session_mgr.get_active_session_info(session_id)
+        if session_info:
+            # NOTE: Ideally, we'd like to keep ForwardMsgCache refs for a session around
+            # when a session is disconnected (and defer their cleanup until the session
+            # is garbage collected), but this would be difficult to do as the
+            # ForwardMsgCache is not thread safe, and we have no guarantee that the
+            # garbage collector will only run on the eventloop thread. Because of this,
+            # we clean up refs now and accept the risk that we're deleting cache entries
+            # that will be useful once the browser tab reconnects.
+            self._message_cache.remove_refs_for_session(session_info.session)
+            self._session_mgr.disconnect_session(session_id)
+        self._on_session_disconnected()
+
+    def handle_backmsg(self, session_id: str, msg: BackMsg) -> None:
+        """Send a BackMsg to an active session.
+
+        Parameters
+        ----------
+        session_id
+            The session's unique ID.
+        msg
+            The BackMsg to deliver to the session.
+
+        Notes
+        -----
+        Threading: UNSAFE. Must be called on the eventloop thread.
+        """
+        if self._state in (RuntimeState.STOPPING, RuntimeState.STOPPED):
+            raise RuntimeStoppedError(f"Can't handle_backmsg (state={self._state})")
+
+        session_info = self._session_mgr.get_active_session_info(session_id)
+        if session_info is None:
+            LOGGER.debug(
+                "Discarding BackMsg for disconnected session (id=%s)", session_id
+            )
+            return
+
+        session_info.session.handle_backmsg(msg)
+
+    def handle_backmsg_deserialization_exception(
+        self, session_id: str, exc: BaseException
+    ) -> None:
+        """Handle an Exception raised during deserialization of a BackMsg.
+
+        Parameters
+        ----------
+        session_id
+            The session's unique ID.
+        exc
+            The Exception.
+
+        Notes
+        -----
+        Threading: UNSAFE. Must be called on the eventloop thread.
+        """
+        if self._state in (RuntimeState.STOPPING, RuntimeState.STOPPED):
+            raise RuntimeStoppedError(
+                f"Can't handle_backmsg_deserialization_exception (state={self._state})"
+            )
+
+        session_info = self._session_mgr.get_active_session_info(session_id)
+        if session_info is None:
+            LOGGER.debug(
+                "Discarding BackMsg Exception for disconnected session (id=%s)",
+                session_id,
+            )
+            return
+
+        session_info.session.handle_backmsg_exception(exc)
+
+    @property
+    async def is_ready_for_browser_connection(self) -> Tuple[bool, str]:
+        if self._state not in (
+            RuntimeState.INITIAL,
+            RuntimeState.STOPPING,
+            RuntimeState.STOPPED,
+        ):
+            return True, "ok"
+
+        return False, "unavailable"
+
+    async def does_script_run_without_error(self) -> Tuple[bool, str]:
+        """Load and execute the app's script to verify it runs without an error.
+
+        Returns
+        -------
+        (True, "ok") if the script completes without error, or (False, err_msg)
+        if the script raises an exception.
+
+        Notes
+        -----
+        Threading: UNSAFE. Must be called on the eventloop thread.
+        """
+        # NOTE: We create an AppSession directly here instead of using the
+        # SessionManager intentionally. This isn't a "real" session and is only being
+        # used to test that the script runs without error.
+        session = AppSession(
+            script_data=ScriptData(self._main_script_path, self._command_line),
+            uploaded_file_manager=self._uploaded_file_mgr,
+            script_cache=self._script_cache,
+            message_enqueued_callback=self._enqueued_some_message,
+            local_sources_watcher=LocalSourcesWatcher(self._main_script_path),
+            user_info={"email": "test@test.com"},
+        )
+
+        try:
+            session.request_rerun(None)
+
+            now = time.perf_counter()
+            while (
+                SCRIPT_RUN_WITHOUT_ERRORS_KEY not in session.session_state
+                and (time.perf_counter() - now) < SCRIPT_RUN_CHECK_TIMEOUT
+            ):
+                await asyncio.sleep(0.1)
+
+            if SCRIPT_RUN_WITHOUT_ERRORS_KEY not in session.session_state:
+                return False, "timeout"
+
+            ok = session.session_state[SCRIPT_RUN_WITHOUT_ERRORS_KEY]
+            msg = "ok" if ok else "error"
+
+            return ok, msg
+        finally:
+            session.shutdown()
+
+    def _set_state(self, new_state: RuntimeState) -> None:
+        LOGGER.debug("Runtime state: %s -> %s", self._state, new_state)
+        self._state = new_state
+
+    async def _loop_coroutine(self) -> None:
+        """The main Runtime loop.
+
+        This function won't exit until `stop` is called.
+
+        Notes
+        -----
+        Threading: UNSAFE. Must be called on the eventloop thread.
+        """
+
+        async_objs = self._get_async_objs()
+
+        try:
+            if self._state == RuntimeState.INITIAL:
+                self._set_state(RuntimeState.NO_SESSIONS_CONNECTED)
+            elif self._state == RuntimeState.ONE_OR_MORE_SESSIONS_CONNECTED:
+                pass
+            else:
+                raise RuntimeError(f"Bad Runtime state at start: {self._state}")
+
+            # Signal that we're started and ready to accept sessions
+            async_objs.started.set_result(None)
+
+            while not async_objs.must_stop.is_set():
+                if self._state == RuntimeState.NO_SESSIONS_CONNECTED:  # type: ignore[comparison-overlap]
+                    # mypy 1.4 incorrectly thinks this if-clause is unreachable,
+                    # because it thinks self._state must be INITIAL | ONE_OR_MORE_SESSIONS_CONNECTED.
+                    await asyncio.wait(  # type: ignore[unreachable]
+                        (
+                            asyncio.create_task(async_objs.must_stop.wait()),
+                            asyncio.create_task(async_objs.has_connection.wait()),
+                        ),
+                        return_when=asyncio.FIRST_COMPLETED,
+                    )
+
+                elif self._state == RuntimeState.ONE_OR_MORE_SESSIONS_CONNECTED:
+                    async_objs.need_send_data.clear()
+
+                    for active_session_info in self._session_mgr.list_active_sessions():
+                        msg_list = active_session_info.session.flush_browser_queue()
+                        for msg in msg_list:
+                            try:
+                                self._send_message(active_session_info, msg)
+                            except SessionClientDisconnectedError:
+                                self._session_mgr.disconnect_session(
+                                    active_session_info.session.id
+                                )
+
+                            # Yield for a tick after sending a message.
+                            await asyncio.sleep(0)
+
+                    # Yield for a few milliseconds between session message
+                    # flushing.
+                    await asyncio.sleep(0.01)
+
+                else:
+                    # Break out of the thread loop if we encounter any other state.
+                    break
+
+                await asyncio.wait(
+                    (
+                        asyncio.create_task(async_objs.must_stop.wait()),
+                        asyncio.create_task(async_objs.need_send_data.wait()),
+                    ),
+                    return_when=asyncio.FIRST_COMPLETED,
+                )
+
+            # Shut down all AppSessions.
+            for session_info in self._session_mgr.list_sessions():
+                # NOTE: We want to fully shut down sessions when the runtime stops for
+                # now, but this may change in the future if/when our notion of a session
+                # is no longer so tightly coupled to a browser tab.
+                self._session_mgr.close_session(session_info.session.id)
+
+            self._set_state(RuntimeState.STOPPED)
+            async_objs.stopped.set_result(None)
+
+        except Exception as e:
+            async_objs.stopped.set_exception(e)
+            traceback.print_exc()
+            LOGGER.info(
+                """
+Please report this bug at https://github.com/streamlit/streamlit/issues.
+"""
+            )
+
+    def _send_message(self, session_info: ActiveSessionInfo, msg: ForwardMsg) -> None:
+        """Send a message to a client.
+
+        If the client is likely to have already cached the message, we may
+        instead send a "reference" message that contains only the hash of the
+        message.
+
+        Parameters
+        ----------
+        session_info : ActiveSessionInfo
+            The ActiveSessionInfo associated with websocket
+        msg : ForwardMsg
+            The message to send to the client
+
+        Notes
+        -----
+        Threading: UNSAFE. Must be called on the eventloop thread.
+        """
+        msg.metadata.cacheable = is_cacheable_msg(msg)
+        msg_to_send = msg
+        if msg.metadata.cacheable:
+            populate_hash_if_needed(msg)
+
+            if self._message_cache.has_message_reference(
+                msg, session_info.session, session_info.script_run_count
+            ):
+                # This session has probably cached this message. Send
+                # a reference instead.
+                LOGGER.debug("Sending cached message ref (hash=%s)", msg.hash)
+                msg_to_send = create_reference_msg(msg)
+
+            # Cache the message so it can be referenced in the future.
+            # If the message is already cached, this will reset its
+            # age.
+            LOGGER.debug("Caching message (hash=%s)", msg.hash)
+            self._message_cache.add_message(
+                msg, session_info.session, session_info.script_run_count
+            )
+
+        # If this was a `script_finished` message, we increment the
+        # script_run_count for this session, and update the cache
+        if (
+            msg.WhichOneof("type") == "script_finished"
+            and msg.script_finished == ForwardMsg.FINISHED_SUCCESSFULLY
+        ):
+            LOGGER.debug(
+                "Script run finished successfully; "
+                "removing expired entries from MessageCache "
+                "(max_age=%s)",
+                config.get_option("global.maxCachedMessageAge"),
+            )
+            session_info.script_run_count += 1
+            self._message_cache.remove_expired_entries_for_session(
+                session_info.session, session_info.script_run_count
+            )
+
+        # Ship it off!
+        session_info.client.write_forward_msg(msg_to_send)
+
+    def _enqueued_some_message(self) -> None:
+        """Callback called by AppSession after the AppSession has enqueued a
+        message. Sets the "needs_send_data" event, which causes our core
+        loop to wake up and flush client message queues.
+
+        Notes
+        -----
+        Threading: SAFE. May be called on any thread.
+        """
+        async_objs = self._get_async_objs()
+        async_objs.eventloop.call_soon_threadsafe(async_objs.need_send_data.set)
+
+    def _get_async_objs(self) -> AsyncObjects:
+        """Return our AsyncObjects instance. If the Runtime hasn't been
+        started, this will raise an error.
+        """
+        if self._async_objs is None:
+            raise RuntimeError("Runtime hasn't started yet!")
+        return self._async_objs
+
+    def _on_session_disconnected(self) -> None:
+        """Set the runtime state to NO_SESSIONS_CONNECTED if the last active
+        session was disconnected.
+        """
+        if (
+            self._state == RuntimeState.ONE_OR_MORE_SESSIONS_CONNECTED
+            and self._session_mgr.num_active_sessions() == 0
+        ):
+            self._get_async_objs().has_connection.clear()
+            self._set_state(RuntimeState.NO_SESSIONS_CONNECTED)