healthckeck improvements

lib/elixir_ai/application.ex

@@ -4,6 +4,14 @@ defmodule ElixirAi.Application do
 
   @impl true
   def start(_type, _args) do
+    # Attach custom logger that filters health checks
+    :telemetry.attach(
+      "phoenix-endpoint-logger",
+      [:phoenix, :endpoint, :stop],
+      &__MODULE__.log_request/4,
+      %{}
+    )
+
     children = [
       ElixirAiWeb.Telemetry,
       ElixirAi.Repo,
@@ -39,4 +47,32 @@ defmodule ElixirAi.Application do
     ElixirAiWeb.Endpoint.config_change(changed, removed)
     :ok
   end
+
+  # Custom request logger that filters health check endpoint
+  require Logger
+
+  def log_request(_event, measurements, %{conn: conn}, _config) do
+    # Skip logging for health check endpoint
+    if conn.request_path != "/health" do
+      duration = System.convert_time_unit(measurements.duration, :native, :microsecond)
+
+      Logger.info(
+        fn ->
+          [conn.method, " ", conn.request_path]
+        end,
+        request_id: conn.assigns[:request_id]
+      )
+
+      Logger.info(
+        fn ->
+          ["Sent ", to_string(conn.status), " in ", format_duration(duration)]
+        end,
+        request_id: conn.assigns[:request_id]
+      )
+    end
+  end
+
+  defp format_duration(μs) when μs < 1000, do: "#{μs}µs"
+  defp format_duration(μs) when μs < 1_000_000, do: "#{div(μs, 1000)}ms"
+  defp format_duration(μs), do: "#{Float.round(μs / 1_000_000, 2)}s"
 end