Port: [Teams] Add support for meeting participants added/removed even…

…ts (#2137)

* [Teams] Add support for meeting participants added/removed events

* test case issue and code format fix

* code format fix for microsoft_app_credentials.py

* removing unnecessary else

libraries/botbuilder-core/botbuilder/core/teams/teams_activity_handler.py

@@ -27,6 +27,7 @@
     TaskModuleResponse,
     TabRequest,
     TabSubmit,
+    MeetingParticipantsEventDetails,
 )
 from botframework.connector import Channels
 from ..serializer_helper import deserializer_helper
@@ -913,6 +914,20 @@ async def on_event_activity(self, turn_context: TurnContext):
                 return await self.on_teams_meeting_end_event(
                     turn_context.activity.value, turn_context
                 )
+            if (
+                turn_context.activity.name
+                == "application/vnd.microsoft.meetingParticipantJoin"
+            ):
+                return await self.on_teams_meeting_participants_join_event(
+                    turn_context.activity.value, turn_context
+                )
+            if (
+                turn_context.activity.name
+                == "application/vnd.microsoft.meetingParticipantLeave"
+            ):
+                return await self.on_teams_meeting_participants_leave_event(
+                    turn_context.activity.value, turn_context
+                )
 
         return await super().on_event_activity(turn_context)
 
@@ -941,3 +956,29 @@ async def on_teams_meeting_end_event(
         :returns: A task that represents the work queued to execute.
         """
         return
+
+    async def on_teams_meeting_participants_join_event(
+        self, meeting: MeetingParticipantsEventDetails, turn_context: TurnContext
+    ):  # pylint: disable=unused-argument
+        """
+        Override this in a derived class to provide logic for when meeting participants are added.
+
+        :param meeting: The details of the meeting.
+        :param turn_context: A context object for this turn.
+
+        :returns: A task that represents the work queued to execute.
+        """
+        return
+
+    async def on_teams_meeting_participants_leave_event(
+        self, meeting: MeetingParticipantsEventDetails, turn_context: TurnContext
+    ):  # pylint: disable=unused-argument
+        """
+        Override this in a derived class to provide logic for when meeting participants are removed.
+
+        :param meeting: The details of the meeting.
+        :param turn_context: A context object for this turn.
+
+        :returns: A task that represents the work queued to execute.
+        """
+        return

libraries/botbuilder-core/tests/teams/test_teams_activity_handler.py

@@ -32,6 +32,7 @@
     TabRequest,
     TabSubmit,
     TabContext,
+    MeetingParticipantsEventDetails,
 )
 from botframework.connector import Channels
 from simple_adapter import SimpleAdapter
@@ -333,6 +334,22 @@ async def on_teams_meeting_end_event(
             turn_context.activity.value, turn_context
         )
 
+    async def on_teams_meeting_participants_join_event(
+        self, meeting: MeetingParticipantsEventDetails, turn_context: TurnContext
+    ):
+        self.record.append("on_teams_meeting_participants_join_event")
+        return await super().on_teams_meeting_participants_join_event(
+            turn_context.activity.value, turn_context
+        )
+
+    async def on_teams_meeting_participants_leave_event(
+        self, meeting: MeetingParticipantsEventDetails, turn_context: TurnContext
+    ):
+        self.record.append("on_teams_meeting_participants_leave_event")
+        return await super().on_teams_meeting_participants_leave_event(
+            turn_context.activity.value, turn_context
+        )
+
 
 class NotImplementedAdapter(BotAdapter):
     async def delete_activity(
@@ -1157,3 +1174,57 @@ async def test_on_teams_meeting_end_event(self):
         assert len(bot.record) == 2
         assert bot.record[0] == "on_event_activity"
         assert bot.record[1] == "on_teams_meeting_end_event"
+
+    async def test_on_teams_meeting_participants_join_event(self):
+        # arrange
+        activity = Activity(
+            type=ActivityTypes.event,
+            channel_id=Channels.ms_teams,
+            name="application/vnd.microsoft.meetingParticipantJoin",
+            value={
+                "members": [
+                    {
+                        "user": {"id": "123", "name": "name"},
+                        "meeting": {"role": "role", "in_meeting": True},
+                    }
+                ],
+            },
+        )
+
+        turn_context = TurnContext(SimpleAdapter(), activity)
+
+        # Act
+        bot = TestingTeamsActivityHandler()
+        await bot.on_turn(turn_context)
+
+        # Assert
+        assert len(bot.record) == 2
+        assert bot.record[0] == "on_event_activity"
+        assert bot.record[1] == "on_teams_meeting_participants_join_event"
+
+    async def test_on_teams_meeting_participants_leave_event(self):
+        # arrange
+        activity = Activity(
+            type=ActivityTypes.event,
+            channel_id=Channels.ms_teams,
+            name="application/vnd.microsoft.meetingParticipantLeave",
+            value={
+                "members": [
+                    {
+                        "user": {"id": "id", "name": "name"},
+                        "meeting": {"role": "role", "in_meeting": True},
+                    }
+                ],
+            },
+        )
+
+        turn_context = TurnContext(SimpleAdapter(), activity)
+
+        # Act
+        bot = TestingTeamsActivityHandler()
+        await bot.on_turn(turn_context)
+
+        # Assert
+        assert len(bot.record) == 2
+        assert bot.record[0] == "on_event_activity"
+        assert bot.record[1] == "on_teams_meeting_participants_leave_event"

libraries/botbuilder-schema/botbuilder/schema/teams/__init__.py

@@ -77,6 +77,9 @@
 from ._models_py3 import TabSubmitData
 from ._models_py3 import TabSuggestedActions
 from ._models_py3 import TaskModuleCardResponse
+from ._models_py3 import UserMeetingDetails
+from ._models_py3 import TeamsMeetingMember
+from ._models_py3 import MeetingParticipantsEventDetails
 
 __all__ = [
     "AppBasedLinkQuery",
@@ -155,4 +158,7 @@
     "TabSubmitData",
     "TabSuggestedActions",
     "TaskModuleCardResponse",
+    "UserMeetingDetails",
+    "TeamsMeetingMember",
+    "MeetingParticipantsEventDetails",
 ]

libraries/botbuilder-schema/botbuilder/schema/teams/_models_py3.py

@@ -2506,3 +2506,65 @@ class MeetingEndEventDetails(MeetingDetailsBase):
     def __init__(self, *, end_time: str = None, **kwargs):
         super(MeetingEndEventDetails, self).__init__(**kwargs)
         self.end_time = end_time
+
+
+class UserMeetingDetails(Model):
+    """Specific details of a user in a Teams meeting.
+
+    :param role: Role of the participant in the current meeting.
+    :type role: str
+    :param in_meeting: True, if the participant is in the meeting.
+    :type in_meeting: bool
+    """
+
+    _attribute_map = {
+        "role": {"key": "role", "type": "str"},
+        "in_meeting": {"key": "inMeeting", "type": "bool"},
+    }
+
+    def __init__(self, *, role: str = None, in_meeting: bool = None, **kwargs) -> None:
+        super(UserMeetingDetails, self).__init__(**kwargs)
+        self.in_meeting = in_meeting
+        self.role = role
+
+
+class TeamsMeetingMember(Model):
+    """Data about the meeting participants.
+
+    :param user: The channel user data.
+    :type user: TeamsChannelAccount
+    :param meeting: The user meeting details.
+    :type meeting: UserMeetingDetails
+    """
+
+    _attribute_map = {
+        "user": {"key": "user", "type": "TeamsChannelAccount"},
+        "meeting": {"key": "meeting", "type": "UserMeetingDetails"},
+    }
+
+    def __init__(
+        self,
+        *,
+        user: TeamsChannelAccount = None,
+        meeting: UserMeetingDetails = None,
+        **kwargs
+    ) -> None:
+        super(TeamsMeetingMember, self).__init__(**kwargs)
+        self.user = user
+        self.meeting = meeting
+
+
+class MeetingParticipantsEventDetails(Model):
+    """Data about the meeting participants.
+
+    :param members: The members involved in the meeting event.
+    :type members: list[~botframework.connector.models.TeamsMeetingMember]
+    """
+
+    _attribute_map = {
+        "conversations": {"key": "members", "type": "[TeamsMeetingMember]"},
+    }
+
+    def __init__(self, *, members: List[TeamsMeetingMember] = None, **kwargs) -> None:
+        super(MeetingParticipantsEventDetails, self).__init__(**kwargs)
+        self.members = members

libraries/botframework-connector/botframework/connector/auth/microsoft_app_credentials.py

@@ -54,10 +54,15 @@ def get_access_token(self, force_refresh: bool = False) -> str:
             auth_token = self.__get_msal_app().acquire_token_for_client(scopes=scopes)
         if "access_token" in auth_token:
             return auth_token["access_token"]
-        else:
-            error = auth_token["error"] if "error" in auth_token else "Unknown error"
-            error_description = auth_token["error_description"] if "error_description" in auth_token else "Unknown error description"
-            raise PermissionError(f"Failed to get access token with error: {error}, error_description: {error_description}")
+        error = auth_token["error"] if "error" in auth_token else "Unknown error"
+        error_description = (
+            auth_token["error_description"]
+            if "error_description" in auth_token
+            else "Unknown error description"
+        )
+        raise PermissionError(
+            f"Failed to get access token with error: {error}, error_description: {error_description}"
+        )
 
     def __get_msal_app(self):
         if not self.app: