Add send_files parameter to MS Teams sink to handle 28KB limit

Replace the incorrectly used send_svg parameter with send_files:
- send_svg was designed only for SVG files (see commit e354c48)
- MS Teams 28KB limit affects all file types, not just SVGs
- Follow existing pattern from Telegram, Pushover, YaMessenger sinks

Changes:
- Add send_files: bool = True to MsTeamsSinkParams
- Update sender.py to filter all files when send_files is False
- Remove incorrect is_image import from sender.py
- Add docstring to write_finding for CodeRabbit coverage
- Update documentation with new parameter name

Author: philslab-ninja

docs/configuration/sinks/ms-teams.rst

@@ -95,24 +95,24 @@ For example:
         webhook_url: teams-incoming-webhook
         prefer_redirect_to_platform: false
 
-Disabling Images
+Disabling File Attachments
 -------------------------------------------------------------------
 
 MS Teams Power Automate workflow webhooks have a strict 28KB payload size limit.
-Alerts with embedded graphs or images may exceed this limit.
+Alerts with embedded files (graphs, images, logs) may exceed this limit.
 
-To disable image embedding and reduce payload size, set ``send_svg: false``:
+To disable file attachments and reduce payload size, set ``send_files: false``:
 
 .. code-block:: yaml
 
      sinksConfig:
      - ms_teams_sink:
         name: main_ms_teams_sink
         webhook_url: teams-incoming-webhook
-        send_svg: false  # Disables image embedding to reduce payload size
+        send_files: false  # Disables all file attachments to reduce payload size
 
 .. note::
 
-    When ``send_svg`` is false (the default), image files such as memory graphs
+    When ``send_files`` is false, all file attachments (images, logs, etc.)
     will not be included in the MS Teams message. Text-based content will still
     be sent normally.

src/robusta/core/sinks/msteams/msteams_sink.py

@@ -12,6 +12,12 @@ def __init__(self, sink_config: MsTeamsSinkConfigWrapper, registry):
         self.sink_config = sink_config.ms_teams_sink
 
     def write_finding(self, finding: Finding, platform_enabled: bool):
+        """Write a finding to the MS Teams channel via webhook.
+
+        Args:
+            finding: The finding to send to MS Teams.
+            platform_enabled: Whether the Robusta platform is enabled for enhanced links.
+        """
         MsTeamsSender.send_finding_to_ms_teams(
             self.webhook_url,
             finding,
@@ -20,5 +26,5 @@ def write_finding(self, finding: Finding, platform_enabled: bool):
             self.account_id,
             self.webhook_override,
             self.sink_config.prefer_redirect_to_platform,
-            self.sink_config.send_svg,
+            self.sink_config.send_files,
         )

src/robusta/core/sinks/msteams/msteams_sink_params.py

@@ -10,6 +10,7 @@
 class MsTeamsSinkParams(SinkBaseParams):
     webhook_url: str
     webhook_override: Optional[str] = None
+    send_files: bool = True  # Set False to disable file attachments (avoids 28KB limit)
 
     @classmethod
     def _get_sink_type(cls):

src/robusta/integrations/msteams/sender.py

@@ -14,7 +14,6 @@
     TableBlock,
     EmptyFileBlock,
 )
-from robusta.core.reporting.utils import is_image
 from robusta.core.sinks.msteams.msteams_webhook_tranformer import MsTeamsWebhookUrlTransformer
 from robusta.integrations.msteams.msteams_msg import MsTeamsMsg
 
@@ -62,7 +61,7 @@ def send_finding_to_ms_teams(
         account_id: str,
         webhook_override: str,
         prefer_redirect_to_platform: bool,
-        send_svg: bool = False,
+        send_files: bool = True,
     ):
         """Send a finding to MS Teams via webhook.
 
@@ -74,8 +73,8 @@ def send_finding_to_ms_teams(
             account_id: The Robusta account ID.
             webhook_override: Optional webhook URL override pattern.
             prefer_redirect_to_platform: Whether to prefer platform links over Prometheus.
-            send_svg: Whether to include image files. When False (default), images are
-                filtered out to avoid exceeding MS Teams payload size limits.
+            send_files: Whether to include file attachments. When False, all files
+                are filtered out to avoid exceeding MS Teams 28KB payload limit.
         """
         webhook_url = MsTeamsWebhookUrlTransformer.template(
             webhook_override=webhook_override, default_webhook_url=webhook_url, annotations=finding.subject.annotations
@@ -86,10 +85,9 @@ def send_finding_to_ms_teams(
         for enrichment in finding.enrichments:
             files_blocks, other_blocks = cls.__split_block_to_files_and_all_the_rest(enrichment)
 
-            # Filter out image files when send_svg is False to avoid payload size issues
-            # This matches behavior of other sinks (Slack, Discord, Jira, etc.)
-            if not send_svg:
-                files_blocks = [b for b in files_blocks if not is_image(b.filename)]
+            # Filter out all files when send_files is False to avoid 28KB payload limit
+            if not send_files:
+                files_blocks = []
 
             for block in other_blocks:
                 cls.__to_ms_teams(block, msg)