Mattermost Dispatcher

nautobot_chatops.dispatchers.mattermost

Dispatcher implementation for sending content to Mattermost.

BadRequestException

Bases: MMException

Malformed Request.

Source code in nautobot_chatops/dispatchers/mattermost.py

class BadRequestException(MMException):
    """Malformed Request."""

Driver

Mattermost API Client.

Source code in nautobot_chatops/dispatchers/mattermost.py

class Driver:
    """Mattermost API Client."""

    def __init__(self, options):
        """Init the Mattermost Driver."""
        self._url = options["url"] + "/api/v4"
        self._token = options["token"]
        self._user_id = None
        self._headers = {"Authorization": "Bearer " + self._token}

    @error_report
    def post(self, endpoint, params=None, data=None, multipart_formdata=None) -> Dict:
        """Post object to endpoint.

        Args:
            endpoint (str): Endpoint to post object to.
            params (str, optional): Optional params to pass to POST. Defaults to None.
            data (dict, optional): JSON dictionary to send to Mattermost. Defaults to None.
            multipart_formdata (str, optional): data to send using Multipart/formdata. Defaults to None.

        Returns:
            dict: Response from Mattermost API.
        """
        if data is not None:
            data = json.dumps(data)

        mm_response = requests.post(
            self._url + endpoint, headers=self._headers, params=params, data=data, files=multipart_formdata, timeout=15
        )
        mm_response.raise_for_status()

        return mm_response.json()

    @error_report
    def get(self, endpoint, params=None, raw=False) -> Dict:
        """Get object from endpoint.

        Args:
            endpoint (str): Endpoint to get object from.
            params (str, optional): Params to pass to the GET. Defaults to None.
            raw (bool, optional): Changes return to string. Defaults to False.

        Returns:
            dict: Response from Mattermost API. Unless raw, which returns the string.
        """
        mm_response = requests.get(self._url + endpoint, headers=self._headers, params=params, timeout=15)
        mm_response.raise_for_status()
        if raw:
            return mm_response

        return mm_response.json()

    @error_report
    def delete(self, endpoint):
        """Delete object at endpoint.

        Args:
            endpoint (string): Endpoint to post delete to.
        """
        mm_response = requests.delete(self._url + endpoint, headers=self._headers, timeout=15)
        mm_response.raise_for_status()

    def chat_post_message(self, channel_id, message=None, blocks=None, files=None, snippet=None):
        """Post Message to Mattermost Channel.

        Args:
            channel_id (str): Mattermost ID for the Channel.
            message (str, optional): Text to add to the post. Defaults to None.
            blocks (dict, optional): Blocks to add to the post. Defaults to None.
            files (list, optional): Local filepaths of files to send. Defaults to None.
            snippet ([type], optional): Long text to upload and attach. Defaults to None.
        """
        data = {
            "channel_id": channel_id,
        }
        if message:
            data["message"] = message

        if blocks:
            data["props"] = {"attachments": blocks}
        file_ids = []
        if files:
            for filename in files:
                # pylint: disable=consider-using-with
                file_ids.append(self.upload_file(channel_id, open(filename, "rb"))["id"])
        if snippet:
            file_ids.append(self.upload_file(channel_id, snippet.encode("utf-8"))["id"])
        data["file_ids"] = file_ids
        self.post("/posts", data=data)

    def chat_post_ephemeral(self, channel_id, user_id, message=None, blocks=None):
        """Post Ephemeral Message to Mattermost Channel.

        Args:
            channel_id (str): Mattermost ID for the Channel.
            user_id (str): Mattermost ID for the User.
            message (str, optional): Text to add to the post. Defaults to None.
            blocks (dict, optional): Blocks to add to the post. Defaults to None.
        """
        data = {"user_id": user_id}
        post = {
            "channel_id": channel_id,
        }
        if message:
            post["message"] = message

        if blocks:
            post["props"] = {"attachments": blocks}
        data["post"] = post
        self.post("/posts/ephemeral", data=data)

    def open_dialog(self, trigger_id, view, dialog_url):
        """Opens a Dialog in Mattermost.

        Args:
            trigger_id (str): [description]
            view ([type]): [description]
            dialog_url ([type]): [description]
        """
        data = {"trigger_id": trigger_id, "url": dialog_url, "dialog": view}
        self.post("/actions/dialogs/open", data=data)

    def upload_file(self, channel_id, file) -> Dict:
        """Uploads a file that can later be attached to a post.

        Instead of passing the filepath, we instead expect a
        File Object or a byte string.  This is to support
        images as well as snippets.

        Args:
            channel_id (str): The channel ID to upload to.
            file (byte): The byte representation of the file.

        Returns:
            dict: Uploaded File.

        """
        return self.post("/files", multipart_formdata={"files": file, "channel_id": (None, channel_id)})["file_infos"][
            0
        ]

__init__(options)

Init the Mattermost Driver.

Source code in nautobot_chatops/dispatchers/mattermost.py

def __init__(self, options):
    """Init the Mattermost Driver."""
    self._url = options["url"] + "/api/v4"
    self._token = options["token"]
    self._user_id = None
    self._headers = {"Authorization": "Bearer " + self._token}

chat_post_ephemeral(channel_id, user_id, message=None, blocks=None)

Post Ephemeral Message to Mattermost Channel.

Parameters:

Name	Type	Description	Default
channel_id	str	Mattermost ID for the Channel.	required
user_id	str	Mattermost ID for the User.	required
message	str	Text to add to the post. Defaults to None.	None
blocks	dict	Blocks to add to the post. Defaults to None.	None

Source code in nautobot_chatops/dispatchers/mattermost.py

def chat_post_ephemeral(self, channel_id, user_id, message=None, blocks=None):
    """Post Ephemeral Message to Mattermost Channel.

    Args:
        channel_id (str): Mattermost ID for the Channel.
        user_id (str): Mattermost ID for the User.
        message (str, optional): Text to add to the post. Defaults to None.
        blocks (dict, optional): Blocks to add to the post. Defaults to None.
    """
    data = {"user_id": user_id}
    post = {
        "channel_id": channel_id,
    }
    if message:
        post["message"] = message

    if blocks:
        post["props"] = {"attachments": blocks}
    data["post"] = post
    self.post("/posts/ephemeral", data=data)

chat_post_message(channel_id, message=None, blocks=None, files=None, snippet=None)

Post Message to Mattermost Channel.

Parameters:

Name	Type	Description	Default
channel_id	str	Mattermost ID for the Channel.	required
message	str	Text to add to the post. Defaults to None.	None
blocks	dict	Blocks to add to the post. Defaults to None.	None
files	list	Local filepaths of files to send. Defaults to None.	None
snippet	[type]	Long text to upload and attach. Defaults to None.	None

Source code in nautobot_chatops/dispatchers/mattermost.py

def chat_post_message(self, channel_id, message=None, blocks=None, files=None, snippet=None):
    """Post Message to Mattermost Channel.

    Args:
        channel_id (str): Mattermost ID for the Channel.
        message (str, optional): Text to add to the post. Defaults to None.
        blocks (dict, optional): Blocks to add to the post. Defaults to None.
        files (list, optional): Local filepaths of files to send. Defaults to None.
        snippet ([type], optional): Long text to upload and attach. Defaults to None.
    """
    data = {
        "channel_id": channel_id,
    }
    if message:
        data["message"] = message

    if blocks:
        data["props"] = {"attachments": blocks}
    file_ids = []
    if files:
        for filename in files:
            # pylint: disable=consider-using-with
            file_ids.append(self.upload_file(channel_id, open(filename, "rb"))["id"])
    if snippet:
        file_ids.append(self.upload_file(channel_id, snippet.encode("utf-8"))["id"])
    data["file_ids"] = file_ids
    self.post("/posts", data=data)

delete(endpoint)

Delete object at endpoint.

Parameters:

Name	Type	Description	Default
endpoint	string	Endpoint to post delete to.	required

Source code in nautobot_chatops/dispatchers/mattermost.py

@error_report
def delete(self, endpoint):
    """Delete object at endpoint.

    Args:
        endpoint (string): Endpoint to post delete to.
    """
    mm_response = requests.delete(self._url + endpoint, headers=self._headers, timeout=15)
    mm_response.raise_for_status()

get(endpoint, params=None, raw=False)

Get object from endpoint.

Parameters:

Name	Type	Description	Default
endpoint	str	Endpoint to get object from.	required
params	str	Params to pass to the GET. Defaults to None.	None
raw	bool	Changes return to string. Defaults to False.	False

Returns:

Name	Type	Description
dict	Dict	Response from Mattermost API. Unless raw, which returns the string.

Source code in nautobot_chatops/dispatchers/mattermost.py

@error_report
def get(self, endpoint, params=None, raw=False) -> Dict:
    """Get object from endpoint.

    Args:
        endpoint (str): Endpoint to get object from.
        params (str, optional): Params to pass to the GET. Defaults to None.
        raw (bool, optional): Changes return to string. Defaults to False.

    Returns:
        dict: Response from Mattermost API. Unless raw, which returns the string.
    """
    mm_response = requests.get(self._url + endpoint, headers=self._headers, params=params, timeout=15)
    mm_response.raise_for_status()
    if raw:
        return mm_response

    return mm_response.json()

open_dialog(trigger_id, view, dialog_url)

Opens a Dialog in Mattermost.

Parameters:

Name	Type	Description	Default
trigger_id	str	[description]	required
view	[type]	[description]	required
dialog_url	[type]	[description]	required

Source code in nautobot_chatops/dispatchers/mattermost.py

def open_dialog(self, trigger_id, view, dialog_url):
    """Opens a Dialog in Mattermost.

    Args:
        trigger_id (str): [description]
        view ([type]): [description]
        dialog_url ([type]): [description]
    """
    data = {"trigger_id": trigger_id, "url": dialog_url, "dialog": view}
    self.post("/actions/dialogs/open", data=data)

post(endpoint, params=None, data=None, multipart_formdata=None)

Post object to endpoint.

Parameters:

Name	Type	Description	Default
endpoint	str	Endpoint to post object to.	required
params	str	Optional params to pass to POST. Defaults to None.	None
data	dict	JSON dictionary to send to Mattermost. Defaults to None.	None
multipart_formdata	str	data to send using Multipart/formdata. Defaults to None.	None

Returns:

Name	Type	Description
dict	Dict	Response from Mattermost API.

Source code in nautobot_chatops/dispatchers/mattermost.py

@error_report
def post(self, endpoint, params=None, data=None, multipart_formdata=None) -> Dict:
    """Post object to endpoint.

    Args:
        endpoint (str): Endpoint to post object to.
        params (str, optional): Optional params to pass to POST. Defaults to None.
        data (dict, optional): JSON dictionary to send to Mattermost. Defaults to None.
        multipart_formdata (str, optional): data to send using Multipart/formdata. Defaults to None.

    Returns:
        dict: Response from Mattermost API.
    """
    if data is not None:
        data = json.dumps(data)

    mm_response = requests.post(
        self._url + endpoint, headers=self._headers, params=params, data=data, files=multipart_formdata, timeout=15
    )
    mm_response.raise_for_status()

    return mm_response.json()

upload_file(channel_id, file)

Uploads a file that can later be attached to a post.

Instead of passing the filepath, we instead expect a File Object or a byte string. This is to support images as well as snippets.

Parameters:

Name	Type	Description	Default
channel_id	str	The channel ID to upload to.	required
file	byte	The byte representation of the file.	required

Returns:

Name	Type	Description
dict	Dict	Uploaded File.

Source code in nautobot_chatops/dispatchers/mattermost.py

def upload_file(self, channel_id, file) -> Dict:
    """Uploads a file that can later be attached to a post.

    Instead of passing the filepath, we instead expect a
    File Object or a byte string.  This is to support
    images as well as snippets.

    Args:
        channel_id (str): The channel ID to upload to.
        file (byte): The byte representation of the file.

    Returns:
        dict: Uploaded File.

    """
    return self.post("/files", multipart_formdata={"files": file, "channel_id": (None, channel_id)})["file_infos"][
        0
    ]

ForbiddenException

Bases: MMException

Bot Unauthorized for api endpoint.

Source code in nautobot_chatops/dispatchers/mattermost.py

class ForbiddenException(MMException):
    """Bot Unauthorized for api endpoint."""

InternalServerErrorException

Bases: MMException

Mattermost Server Error.

Source code in nautobot_chatops/dispatchers/mattermost.py

class InternalServerErrorException(MMException):
    """Mattermost Server Error."""

MMException

Bases: Exception

Generic Mattermost Exception.

Source code in nautobot_chatops/dispatchers/mattermost.py

class MMException(Exception):
    """Generic Mattermost Exception."""

MMRateLimit

Bases: MMException

Mattermost responded with Rate Limited.

Source code in nautobot_chatops/dispatchers/mattermost.py

class MMRateLimit(MMException):
    """Mattermost responded with Rate Limited."""

MattermostDispatcher

Bases: Dispatcher

Dispatch messages and cards to Mattermost.

Source code in nautobot_chatops/dispatchers/mattermost.py

class MattermostDispatcher(Dispatcher):  # pylint: disable=too-many-public-methods
    """Dispatch messages and cards to Mattermost."""

    platform_name = "Mattermost"
    platform_slug = "mattermost"

    platform_color = "145dbf"  # Mattermost Blue

    def __init__(self, *args, **kwargs):
        """Init a MattermostDispatcher."""
        super().__init__(*args, **kwargs)
        self.mm_client = Driver(
            {
                "url": settings.PLUGINS_CONFIG["nautobot_chatops"]["mattermost_url"],
                "token": settings.PLUGINS_CONFIG["nautobot_chatops"]["mattermost_api_token"],
            }
        )

    @classmethod
    @BACKEND_ACTION_LOOKUP.time()
    def platform_lookup(cls, item_type, item_name) -> Optional[str]:
        """Call out to the chat platform to look up, e.g., a specific user ID by name.

        Args:
          item_type (str): One of "organization", "channel", "user"
          item_name (str): Uniquely identifying name of the given item.

        Returns:
          (str, None)
        """
        instance = cls(context=None)
        if item_type == "organization":  # pylint: disable=no-else-raise
            # The admin_teams_list API requires admin access and only works under Enterprise
            raise NotImplementedError
        elif item_type == "channel":
            page = 0
            while True:
                try:
                    response = instance.mm_client.get("/channels", params=f"per_page=20&page={page}")
                except MMRateLimit as err:
                    logger.info("Rate Limit for Mattermost API hit, pausing for 5 seconds to clear: %s", err)
                    # TODO find a way to access HEADERS X-Ratelimit-Reset
                    time.sleep(5)
                    continue
                if not response:
                    break
                for channel in response:
                    if channel["name"] == item_name:
                        return channel["id"]
                page += 1

        elif item_type == "user":
            response = instance.mm_client.get(f"/users/username/{item_name}")
            return response["id"]

        return None

    # More complex APIs for presenting structured data - these typically build on the more basic functions below
    def command_response_header(self, command, subcommand, args, description="information", image_element=None):
        """Construct a consistently forwarded header including the command that was issued.

        Args:
          command (str): Primary command string
          subcommand (str): Secondary command string
          args (list): of tuples, either (arg_name, human_readable_value, literal_value) or (arg_name, literal_value)
          description (str): Short description of what information is contained in the response
          image_element (dict): As constructed by self.image_element()
        """
        fields = []
        for name, value, *_ in args:
            field = {"title": name, "value": value}
            fields.append(field)

        command = f"{self.command_prefix}{command}"

        block = {
            "type": "section",
            "text": self.markdown_element(
                f"Hey {self.user_mention()}, here is that {description} you requested\n"
                f"Shortcut: `{command} {subcommand} {' '.join(arg[-1] for arg in args)}`"
            ),
        }

        # Add to block "accessory" key if image_element exists. Otherwise do not
        if image_element:
            block.update(image_element)

        # Mattermost doesn't like it if we send an empty fields list, we have to omit it entirely
        if fields:
            block["fields"] = fields

        return [block]

    # Send various content to the user or channel

    @BACKEND_ACTION_MARKDOWN.time()
    def send_markdown(self, message, ephemeral=None):
        """Send a Markdown-formatted text message to the user/channel specified by the context."""
        if ephemeral is None:
            ephemeral = settings.PLUGINS_CONFIG["nautobot_chatops"]["send_all_messages_private"]
        try:
            if ephemeral:
                self.mm_client.chat_post_ephemeral(
                    self.context.get("channel_id"), self.context.get("user_id"), message=message
                )
            else:
                self.mm_client.chat_post_message(channel_id=self.context.get("channel_id"), message=message)
        except MMException as mattermost_error:
            self.send_exception(mattermost_error)

    # pylint: disable=arguments-differ
    @BACKEND_ACTION_BLOCKS.time()
    def send_blocks(self, blocks, callback_id=None, modal=False, ephemeral=None, title="Your attention please!"):
        """Send a series of formatting blocks to the user/channel specified by the context.

        Args:
          blocks (list): List of block contents as constructed by other dispatcher functions.
          callback_id (str): Callback ID string such as "command subcommand arg1 arg2". Required if `modal` is True.
          modal (bool): Whether to send this as a modal dialog rather than an inline block.
          ephemeral (bool): Whether to send this as an ephemeral message (only visible to the targeted user).
          title (str): Title to include on a modal dialog.
        """
        if ephemeral is None:
            ephemeral = settings.PLUGINS_CONFIG["nautobot_chatops"]["send_all_messages_private"]
        logger.info("Sending blocks: %s", json.dumps(blocks, indent=2))
        try:
            if modal:
                if not callback_id:
                    self.send_error("Tried to create a dialog without specifying a callback_id")
                    return
                self.mm_client.open_dialog(
                    trigger_id=self.context.get("trigger_id"),
                    view={
                        "title": self.text_element(title),
                        "submit_label": self.text_element("Submit"),
                        "elements": blocks,
                        # Embed the current channel information into to the modal as modals don't store this otherwise
                        "private_metadata": json.dumps(
                            {
                                "channel_id": self.context.get("channel_id"),
                            }
                        ),
                        "callback_id": callback_id,
                        "state": self.context.get("token", ""),
                    },
                    dialog_url=self.context.get("integration_url"),
                )
            elif ephemeral:
                self.mm_client.chat_post_ephemeral(
                    channel_id=self.context.get("channel_id"), user_id=self.context.get("user_id"), blocks=blocks
                )
            else:
                self.mm_client.chat_post_message(channel_id=self.context.get("channel_id"), blocks=blocks)
        except MMException as mm_error:
            self.send_exception(mm_error)

    @BACKEND_ACTION_SNIPPET.time()
    def send_snippet(self, text, title=None, ephemeral=None):
        """Send a longer chunk of text as a file snippet."""
        channel = [self.context.get("channel_id")]
        logger.info("Sending snippet to %s: %s", channel, text)
        if ephemeral:
            for msg in self.split_message(text, MM_MAX_MESSAGE_LENGTH):
                self.mm_client.chat_post_ephemeral(
                    channel_id=self.context.get("channel_id"), user_id=self.context.get("user_id"), message=msg
                )
        else:
            self.mm_client.chat_post_message(channel_id=self.context.get("channel_id"), snippet=text)

    def send_image(self, image_path):
        """Send an image as a file upload."""
        channel = [self.context.get("channel_id")]
        logger.info("Sending image %s to %s", image_path, channel)
        self.mm_client.chat_post_message(channel_id=self.context.get("channel_id"), files=[image_path])

    def send_warning(self, message):
        """Send a warning message to the user/channel specified by the context."""
        self.send_markdown(f":warning: {self.bold(message)} :warning:", ephemeral=True)

    def send_error(self, message):
        """Send an error message to the user/channel specified by the context."""
        self.send_markdown(f":warning: {self.bold(message)} :warning:", ephemeral=True)

    def send_busy_indicator(self):
        """Send a "typing" indicator to show that work is in progress."""
        self.mm_client.post("/users/me/typing", data={"channel_id": self.context.get("channel_id")})

    def send_exception(self, exception):
        """Try to report an exception to the user."""
        self.mm_client.chat_post_ephemeral(
            channel_id=self.context.get("channel_id"),
            user_id=self.context.get("user_id"),
            message=f"Sorry @{self.context.get('user_name')}, an error occurred :sob:\n```{exception}```",
        )

    def delete_message(self, post_id):
        """Delete a message that was previously sent."""
        # Bot accounts cannot delete Ephemeral Messages.
        try:
            self.mm_client.delete(f"/posts/{post_id}")
        except ForbiddenException as exc:
            logger.info("Ignoring 403 exception as this is likely an Ephemeral post: %s ", exc)

    # Prompt the user for various basic inputs
    def prompt_for_text(self, action_id, help_text, label, title="Your attention please!"):
        """Prompt the user to enter freeform text into a field.

        Args:
          action_id (str): Identifier string to attach to the "submit" action.
          help_text (str): Markdown string to display as help text.
          label (str): Label text to display adjacent to the text field.
          title (str): Title to include on the modal dialog.
        """
        textentry = {
            "type": "text",
            "name": action_id,
            "display_name": self.text_element(label),
            "help_text": help_text,
        }
        blocks = [textentry]
        # In Mattermost, a textentry element can ONLY be sent in a modal Interactive dialog
        return self.send_blocks(blocks, callback_id=action_id, ephemeral=False, modal=True, title=title)

    def prompt_from_menu(
        self, action_id, help_text, choices, default=(None, None), confirm=False, offset=0
    ):  # pylint: disable=too-many-arguments
        """Prompt the user for a selection from a menu.

        Args:
          action_id (str): Identifier string to attach to the "submit" action.
          help_text (str): Markdown string to display as help text.
          choices (list): List of (display, value) tuples.
          default (tuple): Default (display, value) to pre-select.
          confirm (bool): If True, prompt the user to confirm their selection (if the platform supports this).
          offset (int): Used for apps that have a menu selection display limit.
        """
        # Default and Confirm options can only be done in Interactive Dialog.  Since the prompt_from_menu is
        # using Ephemeral we will build the basic select.  multi_input_dialog will use the Interactive Dialog.
        logger.info("Ignoring: prompt_from_menu cannot use provided default: %s or confirm: %s", default, confirm)
        menu = self.select_element(action_id, choices)
        cancel_button = {
            "id": "Cancel",
            "name": "Cancel",
            "integration": {
                "url": self.context.get("integration_url", ""),
                "context": {
                    "type": "button",
                    "action_id": "action",
                    "value": "cancel",
                    "action": "cancel",
                    "token": self.context.get("token", ""),
                },
            },
        }

        blocks = [self.markdown_block(help_text), self.actions_block(action_id, [menu, cancel_button])]
        return self.send_blocks(blocks, ephemeral=True)

    # Construct content piecemeal, mostly for use with send_blocks()
    def multi_input_dialog(self, command, sub_command, dialog_title, dialog_list):
        """Provide several input fields on a single dialog.

        Args:
            command (str):  The top level command in use. (ex. net)
            sub_command (str): The command being invoked (ex. add-vlan)
            dialog_title (str): Title of the dialog box
            dialog_list (list):  List of dictionaries containing the dialog parameters. See Example below.

        Example:
            For a selection menu::

                {
                    type: "select",
                    label: "label",
                    choices: [("display 1", "value1"), ("display 2", "value 2")],
                    default: ("display 1", "value1"),
                    confirm: False
                }

            For a text dialog::

                {
                    type: "text",
                    label: "text displayed next to field"
                    default: "default-value",
                    optional: True
                }

            Dictionary Fields

            - type: The type of object to create. Currently supported values: select, text
            - label: A text descriptor that will be placed next to the field
            - choices: A list of tuples which populates the choices in a dropdown selector
            - default: (optional) Default choice of a select menu or initial value to put in a text field.
            - confirm: (optional) If set to True, it will display a "Are you sure?" dialog upon submit.
            - optional: (optional) If set to True, the field can is not required and will return an empty variable of NoneType if left blank.
        """
        blocks = []
        callback_id = f"{command} {sub_command}"
        for i, dialog in enumerate(dialog_list):
            action_id = f"param_{i}"
            if dialog["type"] == "select":
                select_menu = self.select_element_interactive(
                    action_id,
                    dialog["choices"],
                    dialog.get("default", (None, None)),
                    dialog.get("confirm", False),
                    dialog.get("optional", False),
                )
                blocks.append(self._input_block(action_id, dialog["label"], select_menu))
            if dialog["type"] == "text":
                text_entry = {
                    "type": "text",
                    "name": action_id,
                    "display_name": self.text_element(dialog["label"]),
                    "default": dialog.get("default", "") or "",
                    "optional": dialog.get("optional", False),
                }
                blocks.append(self._input_block(action_id, dialog["label"], text_entry))

        return self.send_blocks(blocks, callback_id=callback_id, modal=True, ephemeral=True, title=dialog_title)

    def user_mention(self):
        """Markup for a mention of the username/userid specified in our context."""
        return f"@{self.context['user_name']}"

    def bold(self, text):
        """Mark text as bold."""
        return f"**{text}**"

    def actions_block(self, block_id, actions):
        """Construct a block consisting of a set of action elements."""
        # Mattermost doesn't use the "block_id", but it ignores the input.
        # Leaving in place to pass the testing.
        return {"block_id": block_id, "actions": actions}

    # pylint: disable=no-self-use
    def _input_block(self, block_id, label, element):
        """Construct a block consisting of Input elements."""
        element["display_name"] = label
        element["action_id"] = block_id
        return element

    def markdown_block(self, text):
        """Construct a simple Markdown-formatted text block."""
        return {"text": self.markdown_element(text)}

    def image_element(self, url, alt_text=""):
        """Construct an image element that can be embedded in an attachment."""
        # Mattermost doesn't seem to use the alt_text for Image attachments.
        # Only inline markdown. Adding alt_text to the dictionary doesn't
        # Break anything though.
        return {"image_url": url, "alt_text": alt_text}

    def markdown_element(self, text):
        """Construct a basic Markdown-formatted text element."""
        return text

    def select_element(self, action_id, choices) -> Dict:
        """Construct a basic selection menu with the given choices.

        Args:
            action_id (str): Identifying string to associate with this element
            choices (list): List of (display, value) tuples

        Returns:
            dict: select element
        """
        # Definitely should be a mattermost bug, but "id" has to equal the
        # root of the "integration_url", since this should always be the same
        # I am hardcoding instead of trying to parse the url.
        data = {
            "id": "api",
            "type": "select",
            "integration": {
                "url": self.context.get("integration_url", ""),
                "context": {"action_id": action_id, "type": "static_select", "token": self.context.get("token", "")},
            },
            "name": self.text_element("Select an option"),
            "options": [{"text": self.text_element(choice), "value": value} for choice, value in choices],
        }

        return data

    def select_element_interactive(self, action_id, choices, default=(None, None), confirm=False, optional=False):
        """Construct a basic selection menu for a dialog with the given choices.

        Args:
          action_id (str): Identifying string to associate with this element
          choices (list): List of (display, value) tuples
          default (tuple: Default (display, value) to preselect
          confirm (bool): If true (and the platform supports it), prompt the user to confirm their selection
          optional (bool): If set to True, the field will return NoneType is not specified.

        Returns:
            data (dict): select element
        """
        default_text, default_value = default
        logger.info("Ignoring: select_element_interactive has no confirm: %s", confirm)
        data = {
            "type": "select",
            "name": action_id,
            "placeholder": self.text_element("Select an option"),
            "options": [{"text": self.text_element(choice), "value": value} for choice, value in choices],
            "optional": optional,
        }

        if default_text and default_value:
            data["default"] = default_value

        return data

    def text_element(self, text):
        """Construct a basic plaintext element."""
        return text

__init__(args, kwargs)

Init a MattermostDispatcher.

Source code in nautobot_chatops/dispatchers/mattermost.py

def __init__(self, *args, **kwargs):
    """Init a MattermostDispatcher."""
    super().__init__(*args, **kwargs)
    self.mm_client = Driver(
        {
            "url": settings.PLUGINS_CONFIG["nautobot_chatops"]["mattermost_url"],
            "token": settings.PLUGINS_CONFIG["nautobot_chatops"]["mattermost_api_token"],
        }
    )

actions_block(block_id, actions)

Construct a block consisting of a set of action elements.

Source code in nautobot_chatops/dispatchers/mattermost.py

def actions_block(self, block_id, actions):
    """Construct a block consisting of a set of action elements."""
    # Mattermost doesn't use the "block_id", but it ignores the input.
    # Leaving in place to pass the testing.
    return {"block_id": block_id, "actions": actions}

bold(text)

Mark text as bold.

Source code in nautobot_chatops/dispatchers/mattermost.py

def bold(self, text):
    """Mark text as bold."""
    return f"**{text}**"

command_response_header(command, subcommand, args, description='information', image_element=None)

Construct a consistently forwarded header including the command that was issued.

Parameters:

Name	Type	Description	Default
command	str	Primary command string	required
subcommand	str	Secondary command string	required
args	list	of tuples, either (arg_name, human_readable_value, literal_value) or (arg_name, literal_value)	required
description	str	Short description of what information is contained in the response	'information'
image_element	dict	As constructed by self.image_element()	None

Source code in nautobot_chatops/dispatchers/mattermost.py

def command_response_header(self, command, subcommand, args, description="information", image_element=None):
    """Construct a consistently forwarded header including the command that was issued.

    Args:
      command (str): Primary command string
      subcommand (str): Secondary command string
      args (list): of tuples, either (arg_name, human_readable_value, literal_value) or (arg_name, literal_value)
      description (str): Short description of what information is contained in the response
      image_element (dict): As constructed by self.image_element()
    """
    fields = []
    for name, value, *_ in args:
        field = {"title": name, "value": value}
        fields.append(field)

    command = f"{self.command_prefix}{command}"

    block = {
        "type": "section",
        "text": self.markdown_element(
            f"Hey {self.user_mention()}, here is that {description} you requested\n"
            f"Shortcut: `{command} {subcommand} {' '.join(arg[-1] for arg in args)}`"
        ),
    }

    # Add to block "accessory" key if image_element exists. Otherwise do not
    if image_element:
        block.update(image_element)

    # Mattermost doesn't like it if we send an empty fields list, we have to omit it entirely
    if fields:
        block["fields"] = fields

    return [block]

delete_message(post_id)

Delete a message that was previously sent.

Source code in nautobot_chatops/dispatchers/mattermost.py

def delete_message(self, post_id):
    """Delete a message that was previously sent."""
    # Bot accounts cannot delete Ephemeral Messages.
    try:
        self.mm_client.delete(f"/posts/{post_id}")
    except ForbiddenException as exc:
        logger.info("Ignoring 403 exception as this is likely an Ephemeral post: %s ", exc)

image_element(url, alt_text='')

Construct an image element that can be embedded in an attachment.

Source code in nautobot_chatops/dispatchers/mattermost.py

def image_element(self, url, alt_text=""):
    """Construct an image element that can be embedded in an attachment."""
    # Mattermost doesn't seem to use the alt_text for Image attachments.
    # Only inline markdown. Adding alt_text to the dictionary doesn't
    # Break anything though.
    return {"image_url": url, "alt_text": alt_text}

markdown_block(text)

Construct a simple Markdown-formatted text block.

Source code in nautobot_chatops/dispatchers/mattermost.py

def markdown_block(self, text):
    """Construct a simple Markdown-formatted text block."""
    return {"text": self.markdown_element(text)}

markdown_element(text)

Construct a basic Markdown-formatted text element.

Source code in nautobot_chatops/dispatchers/mattermost.py

def markdown_element(self, text):
    """Construct a basic Markdown-formatted text element."""
    return text

multi_input_dialog(command, sub_command, dialog_title, dialog_list)

Provide several input fields on a single dialog.

Parameters:

Name	Type	Description	Default
command	str	The top level command in use. (ex. net)	required
sub_command	str	The command being invoked (ex. add-vlan)	required
dialog_title	str	Title of the dialog box	required
dialog_list	list	List of dictionaries containing the dialog parameters. See Example below.	required

Example

For a selection menu::

{
    type: "select",
    label: "label",
    choices: [("display 1", "value1"), ("display 2", "value 2")],
    default: ("display 1", "value1"),
    confirm: False
}

For a text dialog::

{
    type: "text",
    label: "text displayed next to field"
    default: "default-value",
    optional: True
}

Dictionary Fields

• type: The type of object to create. Currently supported values: select, text
• label: A text descriptor that will be placed next to the field
• choices: A list of tuples which populates the choices in a dropdown selector
• default: (optional) Default choice of a select menu or initial value to put in a text field.
• confirm: (optional) If set to True, it will display a "Are you sure?" dialog upon submit.
• optional: (optional) If set to True, the field can is not required and will return an empty variable of NoneType if left blank.

Source code in nautobot_chatops/dispatchers/mattermost.py

def multi_input_dialog(self, command, sub_command, dialog_title, dialog_list):
    """Provide several input fields on a single dialog.

    Args:
        command (str):  The top level command in use. (ex. net)
        sub_command (str): The command being invoked (ex. add-vlan)
        dialog_title (str): Title of the dialog box
        dialog_list (list):  List of dictionaries containing the dialog parameters. See Example below.

    Example:
        For a selection menu::

            {
                type: "select",
                label: "label",
                choices: [("display 1", "value1"), ("display 2", "value 2")],
                default: ("display 1", "value1"),
                confirm: False
            }

        For a text dialog::

            {
                type: "text",
                label: "text displayed next to field"
                default: "default-value",
                optional: True
            }

        Dictionary Fields

        - type: The type of object to create. Currently supported values: select, text
        - label: A text descriptor that will be placed next to the field
        - choices: A list of tuples which populates the choices in a dropdown selector
        - default: (optional) Default choice of a select menu or initial value to put in a text field.
        - confirm: (optional) If set to True, it will display a "Are you sure?" dialog upon submit.
        - optional: (optional) If set to True, the field can is not required and will return an empty variable of NoneType if left blank.
    """
    blocks = []
    callback_id = f"{command} {sub_command}"
    for i, dialog in enumerate(dialog_list):
        action_id = f"param_{i}"
        if dialog["type"] == "select":
            select_menu = self.select_element_interactive(
                action_id,
                dialog["choices"],
                dialog.get("default", (None, None)),
                dialog.get("confirm", False),
                dialog.get("optional", False),
            )
            blocks.append(self._input_block(action_id, dialog["label"], select_menu))
        if dialog["type"] == "text":
            text_entry = {
                "type": "text",
                "name": action_id,
                "display_name": self.text_element(dialog["label"]),
                "default": dialog.get("default", "") or "",
                "optional": dialog.get("optional", False),
            }
            blocks.append(self._input_block(action_id, dialog["label"], text_entry))

    return self.send_blocks(blocks, callback_id=callback_id, modal=True, ephemeral=True, title=dialog_title)

platform_lookup(item_type, item_name) classmethod

Call out to the chat platform to look up, e.g., a specific user ID by name.

Parameters:

Name	Type	Description	Default
item_type	str	One of "organization", "channel", "user"	required
item_name	str	Uniquely identifying name of the given item.	required

Returns:

Type	Description
Optional[str]	(str, None)

Source code in nautobot_chatops/dispatchers/mattermost.py

@classmethod
@BACKEND_ACTION_LOOKUP.time()
def platform_lookup(cls, item_type, item_name) -> Optional[str]:
    """Call out to the chat platform to look up, e.g., a specific user ID by name.

    Args:
      item_type (str): One of "organization", "channel", "user"
      item_name (str): Uniquely identifying name of the given item.

    Returns:
      (str, None)
    """
    instance = cls(context=None)
    if item_type == "organization":  # pylint: disable=no-else-raise
        # The admin_teams_list API requires admin access and only works under Enterprise
        raise NotImplementedError
    elif item_type == "channel":
        page = 0
        while True:
            try:
                response = instance.mm_client.get("/channels", params=f"per_page=20&page={page}")
            except MMRateLimit as err:
                logger.info("Rate Limit for Mattermost API hit, pausing for 5 seconds to clear: %s", err)
                # TODO find a way to access HEADERS X-Ratelimit-Reset
                time.sleep(5)
                continue
            if not response:
                break
            for channel in response:
                if channel["name"] == item_name:
                    return channel["id"]
            page += 1

    elif item_type == "user":
        response = instance.mm_client.get(f"/users/username/{item_name}")
        return response["id"]

    return None

prompt_for_text(action_id, help_text, label, title='Your attention please!')

Prompt the user to enter freeform text into a field.

Parameters:

Name	Type	Description	Default
action_id	str	Identifier string to attach to the "submit" action.	required
help_text	str	Markdown string to display as help text.	required
label	str	Label text to display adjacent to the text field.	required
title	str	Title to include on the modal dialog.	'Your attention please!'

Source code in nautobot_chatops/dispatchers/mattermost.py

def prompt_for_text(self, action_id, help_text, label, title="Your attention please!"):
    """Prompt the user to enter freeform text into a field.

    Args:
      action_id (str): Identifier string to attach to the "submit" action.
      help_text (str): Markdown string to display as help text.
      label (str): Label text to display adjacent to the text field.
      title (str): Title to include on the modal dialog.
    """
    textentry = {
        "type": "text",
        "name": action_id,
        "display_name": self.text_element(label),
        "help_text": help_text,
    }
    blocks = [textentry]
    # In Mattermost, a textentry element can ONLY be sent in a modal Interactive dialog
    return self.send_blocks(blocks, callback_id=action_id, ephemeral=False, modal=True, title=title)

prompt_from_menu(action_id, help_text, choices, default=(None, None), confirm=False, offset=0)

Prompt the user for a selection from a menu.

Parameters:

Name	Type	Description	Default
action_id	str	Identifier string to attach to the "submit" action.	required
help_text	str	Markdown string to display as help text.	required
choices	list	List of (display, value) tuples.	required
default	tuple	Default (display, value) to pre-select.	(None, None)
confirm	bool	If True, prompt the user to confirm their selection (if the platform supports this).	False
offset	int	Used for apps that have a menu selection display limit.	0

Source code in nautobot_chatops/dispatchers/mattermost.py

def prompt_from_menu(
    self, action_id, help_text, choices, default=(None, None), confirm=False, offset=0
):  # pylint: disable=too-many-arguments
    """Prompt the user for a selection from a menu.

    Args:
      action_id (str): Identifier string to attach to the "submit" action.
      help_text (str): Markdown string to display as help text.
      choices (list): List of (display, value) tuples.
      default (tuple): Default (display, value) to pre-select.
      confirm (bool): If True, prompt the user to confirm their selection (if the platform supports this).
      offset (int): Used for apps that have a menu selection display limit.
    """
    # Default and Confirm options can only be done in Interactive Dialog.  Since the prompt_from_menu is
    # using Ephemeral we will build the basic select.  multi_input_dialog will use the Interactive Dialog.
    logger.info("Ignoring: prompt_from_menu cannot use provided default: %s or confirm: %s", default, confirm)
    menu = self.select_element(action_id, choices)
    cancel_button = {
        "id": "Cancel",
        "name": "Cancel",
        "integration": {
            "url": self.context.get("integration_url", ""),
            "context": {
                "type": "button",
                "action_id": "action",
                "value": "cancel",
                "action": "cancel",
                "token": self.context.get("token", ""),
            },
        },
    }

    blocks = [self.markdown_block(help_text), self.actions_block(action_id, [menu, cancel_button])]
    return self.send_blocks(blocks, ephemeral=True)

select_element(action_id, choices)

Construct a basic selection menu with the given choices.

Parameters:

Name	Type	Description	Default
action_id	str	Identifying string to associate with this element	required
choices	list	List of (display, value) tuples	required

Returns:

Name	Type	Description
dict	Dict	select element

Source code in nautobot_chatops/dispatchers/mattermost.py

def select_element(self, action_id, choices) -> Dict:
    """Construct a basic selection menu with the given choices.

    Args:
        action_id (str): Identifying string to associate with this element
        choices (list): List of (display, value) tuples

    Returns:
        dict: select element
    """
    # Definitely should be a mattermost bug, but "id" has to equal the
    # root of the "integration_url", since this should always be the same
    # I am hardcoding instead of trying to parse the url.
    data = {
        "id": "api",
        "type": "select",
        "integration": {
            "url": self.context.get("integration_url", ""),
            "context": {"action_id": action_id, "type": "static_select", "token": self.context.get("token", "")},
        },
        "name": self.text_element("Select an option"),
        "options": [{"text": self.text_element(choice), "value": value} for choice, value in choices],
    }

    return data

select_element_interactive(action_id, choices, default=(None, None), confirm=False, optional=False)

Construct a basic selection menu for a dialog with the given choices.

Parameters:

Name	Type	Description	Default
action_id	str	Identifying string to associate with this element	required
choices	list	List of (display, value) tuples	required
default	tuple	Default (display, value) to preselect	(None, None)
confirm	bool	If true (and the platform supports it), prompt the user to confirm their selection	False
optional	bool	If set to True, the field will return NoneType is not specified.	False

Returns:

Name	Type	Description
data	dict	select element

Source code in nautobot_chatops/dispatchers/mattermost.py

def select_element_interactive(self, action_id, choices, default=(None, None), confirm=False, optional=False):
    """Construct a basic selection menu for a dialog with the given choices.

    Args:
      action_id (str): Identifying string to associate with this element
      choices (list): List of (display, value) tuples
      default (tuple: Default (display, value) to preselect
      confirm (bool): If true (and the platform supports it), prompt the user to confirm their selection
      optional (bool): If set to True, the field will return NoneType is not specified.

    Returns:
        data (dict): select element
    """
    default_text, default_value = default
    logger.info("Ignoring: select_element_interactive has no confirm: %s", confirm)
    data = {
        "type": "select",
        "name": action_id,
        "placeholder": self.text_element("Select an option"),
        "options": [{"text": self.text_element(choice), "value": value} for choice, value in choices],
        "optional": optional,
    }

    if default_text and default_value:
        data["default"] = default_value

    return data

send_blocks(blocks, callback_id=None, modal=False, ephemeral=None, title='Your attention please!')

Send a series of formatting blocks to the user/channel specified by the context.

Parameters:

Name	Type	Description	Default
blocks	list	List of block contents as constructed by other dispatcher functions.	required
callback_id	str	Callback ID string such as "command subcommand arg1 arg2". Required if modal is True.	None
modal	bool	Whether to send this as a modal dialog rather than an inline block.	False
ephemeral	bool	Whether to send this as an ephemeral message (only visible to the targeted user).	None
title	str	Title to include on a modal dialog.	'Your attention please!'

Source code in nautobot_chatops/dispatchers/mattermost.py

@BACKEND_ACTION_BLOCKS.time()
def send_blocks(self, blocks, callback_id=None, modal=False, ephemeral=None, title="Your attention please!"):
    """Send a series of formatting blocks to the user/channel specified by the context.

    Args:
      blocks (list): List of block contents as constructed by other dispatcher functions.
      callback_id (str): Callback ID string such as "command subcommand arg1 arg2". Required if `modal` is True.
      modal (bool): Whether to send this as a modal dialog rather than an inline block.
      ephemeral (bool): Whether to send this as an ephemeral message (only visible to the targeted user).
      title (str): Title to include on a modal dialog.
    """
    if ephemeral is None:
        ephemeral = settings.PLUGINS_CONFIG["nautobot_chatops"]["send_all_messages_private"]
    logger.info("Sending blocks: %s", json.dumps(blocks, indent=2))
    try:
        if modal:
            if not callback_id:
                self.send_error("Tried to create a dialog without specifying a callback_id")
                return
            self.mm_client.open_dialog(
                trigger_id=self.context.get("trigger_id"),
                view={
                    "title": self.text_element(title),
                    "submit_label": self.text_element("Submit"),
                    "elements": blocks,
                    # Embed the current channel information into to the modal as modals don't store this otherwise
                    "private_metadata": json.dumps(
                        {
                            "channel_id": self.context.get("channel_id"),
                        }
                    ),
                    "callback_id": callback_id,
                    "state": self.context.get("token", ""),
                },
                dialog_url=self.context.get("integration_url"),
            )
        elif ephemeral:
            self.mm_client.chat_post_ephemeral(
                channel_id=self.context.get("channel_id"), user_id=self.context.get("user_id"), blocks=blocks
            )
        else:
            self.mm_client.chat_post_message(channel_id=self.context.get("channel_id"), blocks=blocks)
    except MMException as mm_error:
        self.send_exception(mm_error)

send_busy_indicator()

Send a "typing" indicator to show that work is in progress.

Source code in nautobot_chatops/dispatchers/mattermost.py

def send_busy_indicator(self):
    """Send a "typing" indicator to show that work is in progress."""
    self.mm_client.post("/users/me/typing", data={"channel_id": self.context.get("channel_id")})

send_error(message)

Send an error message to the user/channel specified by the context.

Source code in nautobot_chatops/dispatchers/mattermost.py

def send_error(self, message):
    """Send an error message to the user/channel specified by the context."""
    self.send_markdown(f":warning: {self.bold(message)} :warning:", ephemeral=True)

send_exception(exception)

Try to report an exception to the user.

Source code in nautobot_chatops/dispatchers/mattermost.py

def send_exception(self, exception):
    """Try to report an exception to the user."""
    self.mm_client.chat_post_ephemeral(
        channel_id=self.context.get("channel_id"),
        user_id=self.context.get("user_id"),
        message=f"Sorry @{self.context.get('user_name')}, an error occurred :sob:\n```{exception}```",
    )

send_image(image_path)

Send an image as a file upload.

Source code in nautobot_chatops/dispatchers/mattermost.py

def send_image(self, image_path):
    """Send an image as a file upload."""
    channel = [self.context.get("channel_id")]
    logger.info("Sending image %s to %s", image_path, channel)
    self.mm_client.chat_post_message(channel_id=self.context.get("channel_id"), files=[image_path])

send_markdown(message, ephemeral=None)

Send a Markdown-formatted text message to the user/channel specified by the context.

Source code in nautobot_chatops/dispatchers/mattermost.py

@BACKEND_ACTION_MARKDOWN.time()
def send_markdown(self, message, ephemeral=None):
    """Send a Markdown-formatted text message to the user/channel specified by the context."""
    if ephemeral is None:
        ephemeral = settings.PLUGINS_CONFIG["nautobot_chatops"]["send_all_messages_private"]
    try:
        if ephemeral:
            self.mm_client.chat_post_ephemeral(
                self.context.get("channel_id"), self.context.get("user_id"), message=message
            )
        else:
            self.mm_client.chat_post_message(channel_id=self.context.get("channel_id"), message=message)
    except MMException as mattermost_error:
        self.send_exception(mattermost_error)

send_snippet(text, title=None, ephemeral=None)

Send a longer chunk of text as a file snippet.

Source code in nautobot_chatops/dispatchers/mattermost.py

@BACKEND_ACTION_SNIPPET.time()
def send_snippet(self, text, title=None, ephemeral=None):
    """Send a longer chunk of text as a file snippet."""
    channel = [self.context.get("channel_id")]
    logger.info("Sending snippet to %s: %s", channel, text)
    if ephemeral:
        for msg in self.split_message(text, MM_MAX_MESSAGE_LENGTH):
            self.mm_client.chat_post_ephemeral(
                channel_id=self.context.get("channel_id"), user_id=self.context.get("user_id"), message=msg
            )
    else:
        self.mm_client.chat_post_message(channel_id=self.context.get("channel_id"), snippet=text)

send_warning(message)

Send a warning message to the user/channel specified by the context.

Source code in nautobot_chatops/dispatchers/mattermost.py

def send_warning(self, message):
    """Send a warning message to the user/channel specified by the context."""
    self.send_markdown(f":warning: {self.bold(message)} :warning:", ephemeral=True)

text_element(text)

Construct a basic plaintext element.

Source code in nautobot_chatops/dispatchers/mattermost.py

def text_element(self, text):
    """Construct a basic plaintext element."""
    return text

user_mention()

Markup for a mention of the username/userid specified in our context.

Source code in nautobot_chatops/dispatchers/mattermost.py

def user_mention(self):
    """Markup for a mention of the username/userid specified in our context."""
    return f"@{self.context['user_name']}"

MethodNotAllowedException

Bases: MMException

Endpoint does not allow used method.

Source code in nautobot_chatops/dispatchers/mattermost.py

class MethodNotAllowedException(MMException):
    """Endpoint does not allow used method."""

NotAcceptableException

Bases: MMException

Invalid Content Type for Endpoint.

Source code in nautobot_chatops/dispatchers/mattermost.py

class NotAcceptableException(MMException):
    """Invalid Content Type for Endpoint."""

NotFoundException

Bases: MMException

Endpoint does not exist.

Source code in nautobot_chatops/dispatchers/mattermost.py

class NotFoundException(MMException):
    """Endpoint does not exist."""

ServiceUnavailableException

Bases: MMException

Mattermost API is currently in maintenance mode.

Source code in nautobot_chatops/dispatchers/mattermost.py

class ServiceUnavailableException(MMException):
    """Mattermost API is currently in maintenance mode."""

UnauthorizedException

Bases: MMException

Invalid Personal Access Token.

Source code in nautobot_chatops/dispatchers/mattermost.py

class UnauthorizedException(MMException):
    """Invalid Personal Access Token."""

UnsupportedMediaTypeException

Bases: MMException

Attempting to POST data in incorrect format.

Source code in nautobot_chatops/dispatchers/mattermost.py

class UnsupportedMediaTypeException(MMException):
    """Attempting to POST data in incorrect format."""

error_report(function)

Wrapper to catch api errors and raise appropriate Exceptions.

Source code in nautobot_chatops/dispatchers/mattermost.py

def error_report(function):
    """Wrapper to catch api errors and raise appropriate Exceptions."""

    def inner(*args, **kwargs):  # pylint: disable=inconsistent-return-statements
        """Inner wrapper to catch api errors and raise appropriate Exceptions."""
        try:
            return function(*args, **kwargs)
        except HTTPError as err:
            if err.response.status_code == 400:
                raise BadRequestException(f"Malformatted requests: {err.response.text}")
            if err.response.status_code == 401:
                raise UnauthorizedException(f"Invalid credentials provided or account is locked: {err.response.text}")
            if err.response.status_code == 403:
                raise ForbiddenException(
                    f"Insufficient permissions to execute request (ie, any POST method as a regular user): {err.response.text}"
                )
            if err.response.status_code == 404:
                raise NotFoundException(f"Attempting to access an endpoint that does not exist: {err.response.text}")
            if err.response.status_code == 405:
                raise MethodNotAllowedException(
                    f"Wrong request type for target endpoint (ie, POSTing data to a GET endpoint): {err.response.text}"
                )
            if err.response.status_code == 406:
                raise NotAcceptableException(
                    f"Content Type of the data returned does not match the Accept header of the request: {err.response.text}"
                )
            if err.response.status_code == 415:
                raise UnsupportedMediaTypeException(f"Attempting to POST data in incorrect format: {err.response.text}")
            if err.response.status_code == 429:
                raise MMRateLimit(
                    f"You have exceeded the max number of requests per 1-minute period: {err.response.text}"
                )
            if err.response.status_code == 500:
                raise InternalServerErrorException(f"Contact support if you see this error type: {err.response.text}")
            if err.response.status_code == 503:
                raise ServiceUnavailableException(
                    f"The Mattermost API is currently in maintenance mode: {err.response.text}"
                )

    return inner