chore: import upstream snapshot with attribution

python/samples/demos/copilot_studio_agent/.env.sample

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+BOT_SECRET="copy from Copilot Studio Agent, under Settings > Security > Web Channel"
+BOT_ENDPOINT="https://europe.directline.botframework.com/v3/directline"

python/samples/demos/copilot_studio_agent/README.md

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+# Copilot Studio Agents interaction
+
+This is a simple example of how to interact with Copilot Studio Agents as they were first-party agents in Semantic Kernel.
+
+![alt text](image.png)
+
+## Rationale
+
+Semantic Kernel already features many different types of agents, including `ChatCompletionAgent`, `AzureAIAgent`, `OpenAIAssistantAgent` or `AutoGenConversableAgent`. All of them though involve code-based agents.
+
+Instead, [Microsoft Copilot Studio](https://learn.microsoft.com/en-us/microsoft-copilot-studio/fundamentals-what-is-copilot-studio) allows you to create declarative, low-code, and easy-to-maintain agents and publish them over multiple channels.
+
+This way, you can create any amount of agents in Copilot Studio and interact with them along with code-based agents in Semantic Kernel, thus being able to use the best of both worlds.
+
+## Implementation
+
+The implementation is quite simple, since Copilot Studio can publish agents over DirectLine API, which we can use in Semantic Kernel to define a new subclass of `Agent` named [`DirectLineAgent`](src/direct_line_agent.py).
+
+Additionally, we do enforce [authentication to the DirectLine API](https://learn.microsoft.com/en-us/microsoft-copilot-studio/configure-web-security).
+
+## Usage
+
+> [!NOTE]
+> Working with Copilot Studio Agents requires a [subscription](https://learn.microsoft.com/en-us/microsoft-copilot-studio/requirements-licensing-subscriptions) to Microsoft Copilot Studio.
+
+> [!TIP]
+> In this case, we suggest to start with a simple Q&A Agent and supply a PDF to answer some questions. You can find a free sample like [Microsoft Surface Pro 4 User Guide](https://download.microsoft.com/download/2/9/B/29B20383-302C-4517-A006-B0186F04BE28/surface-pro-4-user-guide-EN.pdf)
+
+1. [Create a new agent](https://learn.microsoft.com/en-us/microsoft-copilot-studio/fundamentals-get-started?tabs=web) in Copilot Studio
+2. [Publish the agent](https://learn.microsoft.com/en-us/microsoft-copilot-studio/publication-fundamentals-publish-channels?tabs=web)
+3. Turn off default authentication under the agent Settings > Security
+4. [Setup web channel security](https://learn.microsoft.com/en-us/microsoft-copilot-studio/configure-web-security) and copy the secret value
+
+Once you're done with the above steps, you can use the following code to interact with the Copilot Studio Agent:
+
+1. Copy the `.env.sample` file to `.env` and set the `BOT_SECRET` environment variable to the secret value
+2. Run the following code:
+
+```bash
+python -m venv .venv
+
+# On Mac/Linux
+source .venv/bin/activate
+# On Windows
+.venv\Scripts\Activate.ps1
+
+pip install -r requirements.txt
+
+chainlit run --port 8081 .\chat.py
+```

python/samples/demos/copilot_studio_agent/src/chat.py

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+# Copyright (c) Microsoft. All rights reserved.
+
+import logging
+import os
+
+import chainlit as cl
+from direct_line_agent import DirectLineAgent
+from dotenv import load_dotenv
+
+from semantic_kernel.contents.chat_history import ChatHistory
+
+load_dotenv(override=True)
+
+logging.basicConfig(level=logging.INFO)
+logging.getLogger("direct_line_agent").setLevel(logging.DEBUG)
+logger = logging.getLogger(__name__)
+
+agent = DirectLineAgent(
+    id="copilot_studio",
+    name="copilot_studio",
+    description="copilot_studio",
+    bot_secret=os.getenv("BOT_SECRET"),
+    bot_endpoint=os.getenv("BOT_ENDPOINT"),
+)
+
+
+@cl.on_chat_start
+async def on_chat_start():
+    cl.user_session.set("chat_history", ChatHistory())
+
+
+@cl.on_message
+async def on_message(message: cl.Message):
+    chat_history: ChatHistory = cl.user_session.get("chat_history")
+
+    chat_history.add_user_message(message.content)
+
+    response = await agent.get_response(history=chat_history)
+
+    cl.user_session.set("chat_history", chat_history)
+
+    logger.info(f"Response: {response}")
+
+    await cl.Message(content=response.content, author=agent.name).send()

python/samples/demos/copilot_studio_agent/src/direct_line_agent.py

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+# Copyright (c) Microsoft. All rights reserved.
+
+import asyncio
+import logging
+import sys
+from collections.abc import AsyncIterable
+from typing import Any
+
+if sys.version_info >= (3, 12):
+    from typing import override  # pragma: no cover
+else:
+    from typing_extensions import override  # pragma: no cover
+import aiohttp
+
+from semantic_kernel.agents import Agent
+from semantic_kernel.contents.chat_history import ChatHistory
+from semantic_kernel.contents.chat_message_content import ChatMessageContent
+from semantic_kernel.exceptions.agent_exceptions import AgentInvokeException
+from semantic_kernel.utils.telemetry.agent_diagnostics.decorators import (
+    trace_agent_get_response,
+    trace_agent_invocation,
+)
+
+logger = logging.getLogger(__name__)
+
+
+class DirectLineAgent(Agent):
+    """
+    An Agent subclass that connects to a DirectLine Bot from Microsoft Bot Framework.
+    Instead of directly supplying a secret and conversation ID, the agent queries a token_endpoint
+    to retrieve the token and then starts a conversation.
+    """
+
+    token_endpoint: str | None = None
+    bot_secret: str | None = None
+    bot_endpoint: str
+    conversation_id: str | None = None
+    directline_token: str | None = None
+    session: aiohttp.ClientSession = None
+
+    async def _ensure_session(self) -> None:
+        """
+        Lazily initialize the aiohttp ClientSession.
+        """
+        if self.session is None:
+            self.session = aiohttp.ClientSession()
+
+    async def _fetch_token_and_conversation(self) -> None:
+        """
+        Retrieve the DirectLine token either by using the bot_secret or by querying the token_endpoint.
+        If bot_secret is provided, it posts to "https://directline.botframework.com/v3/directline/tokens/generate".
+        """
+        await self._ensure_session()
+        try:
+            if self.bot_secret:
+                url = f"{self.bot_endpoint}/tokens/generate"
+                headers = {"Authorization": f"Bearer {self.bot_secret}"}
+                async with self.session.post(url, headers=headers) as resp:
+                    if resp.status == 200:
+                        data = await resp.json()
+                        self.directline_token = data.get("token")
+                        if not self.directline_token:
+                            logger.error("Token generation response missing token: %s", data)
+                            raise AgentInvokeException("No token received from token generation.")
+                    else:
+                        logger.error("Token generation endpoint error status: %s", resp.status)
+                        raise AgentInvokeException("Failed to generate token using bot_secret.")
+            else:
+                async with self.session.get(self.token_endpoint) as resp:
+                    if resp.status == 200:
+                        data = await resp.json()
+                        self.directline_token = data.get("token")
+                        if not self.directline_token:
+                            logger.error("Token endpoint returned no token: %s", data)
+                            raise AgentInvokeException("No token received.")
+                    else:
+                        logger.error("Token endpoint error status: %s", resp.status)
+                        raise AgentInvokeException("Failed to fetch token from token endpoint.")
+        except Exception as ex:
+            logger.exception("Exception fetching token: %s", ex)
+            raise AgentInvokeException("Exception occurred while fetching token.") from ex
+
+    @trace_agent_get_response
+    @override
+    async def get_response(
+        self,
+        history: ChatHistory,
+        arguments: dict[str, Any] | None = None,
+        **kwargs: Any,
+    ) -> ChatMessageContent:
+        """
+        Get a response from the DirectLine Bot.
+        """
+        responses = []
+        async for response in self.invoke(history, arguments, **kwargs):
+            responses.append(response)
+
+        if not responses:
+            raise AgentInvokeException("No response from DirectLine Bot.")
+
+        return responses[0]
+
+    @trace_agent_invocation
+    @override
+    async def invoke(
+        self,
+        history: ChatHistory,
+        arguments: dict[str, Any] | None = None,
+        **kwargs: Any,
+    ) -> AsyncIterable[ChatMessageContent]:
+        """
+        Send the latest message from the chat history to the DirectLine Bot
+        and yield responses. This sends the payload after ensuring that:
+          1. The token is fetched.
+          2. A conversation is started.
+          3. The activity payload is posted.
+          4. Activities are polled until an event "DynamicPlanFinished" is received.
+        """
+        payload = self._build_payload(history, arguments, **kwargs)
+        response_data = await self._send_message(payload)
+        if response_data is None or "activities" not in response_data:
+            raise AgentInvokeException(f"Invalid response from DirectLine Bot.\n{response_data}")
+
+        logger.debug("DirectLine Bot response: %s", response_data)
+
+        # NOTE DirectLine Activities have different formats
+        # than ChatMessageContent. We need to convert them and
+        # remove unsupported activities.
+        for activity in response_data["activities"]:
+            if activity.get("type") != "message" or activity.get("from", {}).get("role") == "user":
+                continue
+            role = activity.get("from", {}).get("role", "assistant")
+            if role == "bot":
+                role = "assistant"
+            message = ChatMessageContent(
+                role=role,
+                content=activity.get("text", ""),
+                name=activity.get("from", {}).get("name", self.name),
+            )
+            yield message
+
+    def _build_payload(
+        self,
+        history: ChatHistory,
+        arguments: dict[str, Any] | None = None,
+        **kwargs: Any,
+    ) -> dict[str, Any]:
+        """
+        Build the message payload for the DirectLine Bot.
+        Uses the latest message from the chat history.
+        """
+        latest_message = history.messages[-1] if history.messages else None
+        text = latest_message.content if latest_message else "Hello"
+        payload = {
+            "type": "message",
+            "from": {"id": "user"},
+            "text": text,
+        }
+        # Optionally include conversationId if available.
+        if self.conversation_id:
+            payload["conversationId"] = self.conversation_id
+        return payload
+
+    async def _send_message(self, payload: dict[str, Any]) -> dict[str, Any] | None:
+        """
+        1. Ensure the token is fetched.
+        2. Start a conversation by posting to the bot_endpoint /conversations endpoint (without a payload)
+        3. Post the payload to /conversations/{conversationId}/activities
+        4. Poll GET /conversations/{conversationId}/activities every 1s using a watermark
+           to fetch only the latest messages until an activity with type="event"
+           and name="DynamicPlanFinished" is found.
+        """
+        await self._ensure_session()
+        if not self.directline_token:
+            await self._fetch_token_and_conversation()
+
+        headers = {
+            "Authorization": f"Bearer {self.directline_token}",
+            "Content-Type": "application/json",
+        }
+
+        # Step 2: Start a conversation if one hasn't already been started.
+        if not self.conversation_id:
+            start_conv_url = f"{self.bot_endpoint}/conversations"
+            async with self.session.post(start_conv_url, headers=headers) as resp:
+                if resp.status not in (200, 201):
+                    logger.error("Failed to start conversation. Status: %s", resp.status)
+                    raise AgentInvokeException("Failed to start conversation.")
+                conv_data = await resp.json()
+                self.conversation_id = conv_data.get("conversationId")
+                if not self.conversation_id:
+                    raise AgentInvokeException("Conversation ID not found in start response.")
+
+        # Step 3: Post the message payload.
+        activities_url = f"{self.bot_endpoint}/conversations/{self.conversation_id}/activities"
+        async with self.session.post(activities_url, json=payload, headers=headers) as resp:
+            if resp.status != 200:
+                logger.error("Failed to post activity. Status: %s", resp.status)
+                raise AgentInvokeException("Failed to post activity.")
+            _ = await resp.json()  # Response from posting activity is ignored.
+
+        # Step 4: Poll for new activities using watermark until DynamicPlanFinished event is found.
+        finished = False
+        collected_data = None
+        watermark = None
+        while not finished:
+            url = activities_url if watermark is None else f"{activities_url}?watermark={watermark}"
+            async with self.session.get(url, headers=headers) as resp:
+                if resp.status == 200:
+                    data = await resp.json()
+                    watermark = data.get("watermark", watermark)
+                    activities = data.get("activities", [])
+                    if any(
+                        activity.get("type") == "event" and activity.get("name") == "DynamicPlanFinished"
+                        for activity in activities
+                    ):
+                        collected_data = data
+                        finished = True
+                        break
+                else:
+                    logger.error("Error polling activities. Status: %s", resp.status)
+            await asyncio.sleep(0.3)
+
+        return collected_data
+
+    async def close(self) -> None:
+        """
+        Clean up the aiohttp session.
+        """
+        await self.session.close()
+
+    # NOTE not implemented yet, possibly use websockets
+    @trace_agent_invocation
+    @override
+    async def invoke_stream(self, *args, **kwargs):
+        return super().invoke_stream(*args, **kwargs)

python/samples/demos/copilot_studio_agent/src/requirements.txt

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+chainlit>=2.0.1
+python-dotenv>=1.0.1
+aiohttp>=3.10.5
+semantic-kernel>=1.22.0