From 9ffeba3fc99a9af62c08b5bd029539083f14ff1a Mon Sep 17 00:00:00 2001
From: Graham McIntire <graham@mcintire.me>
Date: Mon, 6 Apr 2026 11:55:00 -0500
Subject: [PATCH] Suppress health check request logs

/health gets hit constantly by k8s probes, drowning out useful logs.
---
 lib/microwaveprop_web/endpoint.ex | 6 +++++-
 lib/microwaveprop_web/router.ex   | 2 +-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/microwaveprop_web/endpoint.ex b/lib/microwaveprop_web/endpoint.ex
index ee927d00..c324c152 100644
--- a/lib/microwaveprop_web/endpoint.ex
+++ b/lib/microwaveprop_web/endpoint.ex
@@ -46,7 +46,7 @@ defmodule MicrowavepropWeb.Endpoint do
 
   plug Plug.RequestId
   plug MicrowavepropWeb.Plugs.RemoteIp
-  plug Plug.Telemetry, event_prefix: [:phoenix, :endpoint]
+  plug Plug.Telemetry, event_prefix: [:phoenix, :endpoint], log: {__MODULE__, :log_level, []}
 
   plug Plug.Parsers,
     parsers: [:urlencoded, :multipart, :json],
@@ -57,4 +57,8 @@ defmodule MicrowavepropWeb.Endpoint do
   plug Plug.Head
   plug Plug.Session, @session_options
   plug MicrowavepropWeb.Router
+
+  @doc false
+  def log_level(%{path_info: ["health"]}), do: false
+  def log_level(_conn), do: :info
 end
diff --git a/lib/microwaveprop_web/router.ex b/lib/microwaveprop_web/router.ex
index 168c0950..a78ded2f 100644
--- a/lib/microwaveprop_web/router.ex
+++ b/lib/microwaveprop_web/router.ex
@@ -23,7 +23,7 @@ defmodule MicrowavepropWeb.Router do
   end
 
   # Health check — no pipeline, minimal overhead
-  get "/health", MicrowavepropWeb.HealthController, :check
+  get "/health", MicrowavepropWeb.HealthController, :check, log: false
 
   scope "/", MicrowavepropWeb do
     pipe_through :browser