fix warnings

config/dev.exs

@@ -13,15 +13,15 @@ config :logger, :console,
   metadata: []
 
 # File backend configuration (writes to log/dev.log)
+# Backend is registered in application.ex via LoggerBackends.add/1
 config :logger, :file_log,
   path: "log/dev.log",
   level: :info,
   format: "[$level] $message\n",
   metadata: []
 
-# Logger configuration with console and file backends
+# Logger configuration
 config :logger,
-  backends: [:console, {LoggerFileBackend, :file_log}],
   level: :info
 
 # Initialize plugs at runtime for faster development compilation

lib/towerops/application.ex

@@ -19,6 +19,11 @@ defmodule Towerops.Application do
     # Ensure parsetools is started for MIB parsing (yecc dependency)
     _ = Application.ensure_all_started(:parsetools)
 
+    # Register file logger backend for development (using new LoggerBackends API)
+    if Application.get_env(:towerops, :env) == :dev do
+      register_file_logger()
+    end
+
     # Add snmpkit ebin directory to code path for mib_grammar_elixir.beam
     # This is needed because snmpkit has vendored Erlang modules (compiled from .yrl)
     # Note: With pre-compiled MIBs, this may no longer be needed
@@ -217,6 +222,15 @@ defmodule Towerops.Application do
     Keyword.merge(base_opts, resilience_opts)
   end
 
+  # Register file logger backend for development (only available in :dev environment)
+  defp register_file_logger do
+    if Code.ensure_loaded?(LoggerBackends) do
+      LoggerBackends.add(LoggerFileBackend, :file_log)
+    else
+      Logger.warning("LoggerBackends not available - file logging disabled")
+    end
+  end
+
   @doc """
   Returns the deployment timestamp.
 

mix.exs

@@ -88,7 +88,8 @@ defmodule Towerops.MixProject do
       {:mix_audit, "~> 2.1", only: [:dev, :test], runtime: false},
       {:hammer, "~> 7.2.0"},
       {:cloak_ecto, "~> 1.3"},
-      {:logger_file_backend, "~> 0.0.13", only: :dev}
+      {:logger_file_backend, "~> 0.0.13", only: :dev},
+      {:logger_backends, "~> 1.0", only: :dev}
     ]
   end
 

mix.lock

@@ -35,6 +35,7 @@
   "jason": {:hex, :jason, "1.4.4", "b9226785a9aa77b6857ca22832cffa5d5011a667207eb2a0ad56adb5db443b8a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b"},
   "lazy_html": {:hex, :lazy_html, "0.1.8", "677a8642e644eef8de98f3040e2520d42d0f0f8bd6c5cd49db36504e34dffe91", [:make, :mix], [{:cc_precompiler, "~> 0.1", [hex: :cc_precompiler, repo: "hexpm", optional: false]}, {:elixir_make, "~> 0.9.0", [hex: :elixir_make, repo: "hexpm", optional: false]}, {:fine, "~> 0.1.0", [hex: :fine, repo: "hexpm", optional: false]}], "hexpm", "0d8167d930b704feb94b41414ca7f5779dff9bca7fcf619fcef18de138f08736"},
   "libcluster": {:hex, :libcluster, "3.5.0", "5ee4cfde4bdf32b2fef271e33ce3241e89509f4344f6c6a8d4069937484866ba", [:mix], [{:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: false]}, {:telemetry, "~> 1.3", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "ebf6561fcedd765a4cd43b4b8c04b1c87f4177b5fb3cbdfe40a780499d72f743"},
+  "logger_backends": {:hex, :logger_backends, "1.0.0", "09c4fad6202e08cb0fbd37f328282f16539aca380f512523ce9472b28edc6bdf", [:mix], [], "hexpm", "1faceb3e7ec3ef66a8f5746c5afd020e63996df6fd4eb8cdb789e5665ae6c9ce"},
   "logger_file_backend": {:hex, :logger_file_backend, "0.0.14", "774bb661f1c3fed51b624d2859180c01e386eb1273dc22de4f4a155ef749a602", [:mix], [], "hexpm", "071354a18196468f3904ef09413af20971d55164267427f6257b52cfba03f9e6"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
   "mime": {:hex, :mime, "2.0.7", "b8d739037be7cd402aee1ba0306edfdef982687ee7e9859bee6198c1e7e2f128", [:mix], [], "hexpm", "6171188e399ee16023ffc5b76ce445eb6d9672e2e241d2df6050f3c771e80ccd"},