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feat(gateway): add @-mention-only filter for Mattermost channels

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The Mattermost adapter now only responds to messages in channels and
groups when the bot is @-mentioned. DMs are always processed without
filtering.

Detection checks both the bot's @username and user ID in the message
text, providing a reliable fallback when the structured mentions field
is unavailable.

Fixes #2174
This commit is contained in:
Teknium 2026-03-22 03:50:20 -07:00
parent 4bded44b6a
commit fbbe9e6030
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1 changed files with 18 additions and 0 deletions
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18
gateway/platforms/mattermost.py
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@ -580,6 +580,24 @@ class MattermostAdapter(BasePlatformAdapter):
# For DMs, user_id is sufficient. For channels, check for @mention. # For DMs, user_id is sufficient. For channels, check for @mention.
message_text = post.get("message", "") message_text = post.get("message", "")
# Mention-only mode: skip channel messages that don't @mention the bot.
# DMs (type "D") are always processed.
if channel_type_raw != "D":
mention_patterns = [
f"@{self._bot_username}",
f"@{self._bot_user_id}",
]
has_mention = any(
pattern.lower() in message_text.lower()
for pattern in mention_patterns
)
if not has_mention:
logger.debug(
"Mattermost: skipping non-DM message without @mention (channel=%s)",
channel_id,
)
return
# Resolve sender info. # Resolve sender info.
sender_id = post.get("user_id", "") sender_id = post.get("user_id", "")
sender_name = data.get("sender_name", "").lstrip("@") or sender_id sender_name = data.get("sender_name", "").lstrip("@") or sender_id