From c7d9f89e09f67b7ebccab022cd422e702dd088d2 Mon Sep 17 00:00:00 2001
From: Adrian Gruntkowski <adrian.gruntkowski@gmail.com>
Date: Tue, 3 Feb 2026 11:36:49 +0100
Subject: [PATCH] Filter out  driver disconnect error messages

They are pure noise as the driver is setup to automatically reconnect
since https://github.com/plausible/ch/pull/292.
---
 lib/sentry_filter.ex | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/sentry_filter.ex b/lib/sentry_filter.ex
index 4884d17a97c9..4e496d8ec733 100644
--- a/lib/sentry_filter.ex
+++ b/lib/sentry_filter.ex
@@ -32,6 +32,16 @@ defmodule Plausible.SentryFilter do
     %{event | fingerprint: ["mint_transport", reason]}
   end
 
+  def before_send(
+        %{source: :logger, message: %{formatted: "Ch.Connection (#PID<" <> rest}} = event
+      ) do
+    if String.ends_with?(rest, ")) disconnected: ** (Mint.HTTPError) the connection is closed") do
+      false
+    else
+      event
+    end
+  end
+
   def before_send(%{extra: %{request: %Plausible.Ingestion.Request{}}} = event) do
     %{event | fingerprint: ["ingestion_request"]}
   end