DB connection details logging (#2274)

* feat: log some information on RDS token

* feat: report for max_connections

* feat: report for authentication_timeout

* feat: log token hash

lib/report.ex

@@ -9,7 +9,9 @@ defmodule Report do
     Report.UserNamesAndUuids,
     Report.UserConfigurations,
     Report.NotificationsCountEstimate,
-    Report.NotificationsUsersCountEstimate
+    Report.NotificationsUsersCountEstimate,
+    Report.MaxConnections,
+    Report.AuthenticationTimeout
   ]
 
   @callback run() :: {:ok, [map()]} | :error

lib/report/authentication_timeout.ex

@@ -0,0 +1,21 @@
+defmodule Report.AuthenticationTimeout do
+  @moduledoc """
+  Report Postgres' configured authentication_timeout
+  """
+
+  @behaviour Report
+
+  @impl Report
+  def run() do
+    {:ok, %Postgrex.Result{rows: [[authentication_timeout]]}} =
+      Ecto.Adapters.SQL.query(Skate.Repo, "SHOW authentication_timeout")
+
+    {:ok, [%{max_connections: authentication_timeout}]}
+  end
+
+  @impl Report
+  def short_name(), do: "authentication_timeout"
+
+  @impl Report
+  def description(), do: "Postgres authentication_timeout configuration"
+end

lib/report/max_connections.ex

@@ -0,0 +1,21 @@
+defmodule Report.MaxConnections do
+  @moduledoc """
+  Report Postgres' configured max_connections
+  """
+
+  @behaviour Report
+
+  @impl Report
+  def run() do
+    {:ok, %Postgrex.Result{rows: [[max_connections]]}} =
+      Ecto.Adapters.SQL.query(Skate.Repo, "SHOW max_connections")
+
+    {:ok, [%{max_connections: max_connections}]}
+  end
+
+  @impl Report
+  def short_name(), do: "max_connections"
+
+  @impl Report
+  def description(), do: "Postgres max_connections configuration"
+end

lib/skate/repo.ex

@@ -18,6 +18,14 @@ defmodule Skate.Repo do
         %{}
       )
 
+    if is_nil(token) do
+      Logger.info("#{__MODULE__} add_prod_credentials token_is_nil")
+    else
+      hash_string = :crypto.hash(:sha3_256, token) |> Base.encode16()
+
+      Logger.info("#{__MODULE__} add_prod_credentials token_hash=#{hash_string}")
+    end
+
     Keyword.merge(config,
       hostname: hostname,
       username: username,

test/report_test.exs

@@ -56,7 +56,9 @@ defmodule ReportTest do
                "user_settings" => Report.UserSettings,
                "user_names_and_uuids" => Report.UserNamesAndUuids,
                "notifications_count_estimate" => Report.NotificationsCountEstimate,
-               "notifications_users_count_estimate" => Report.NotificationsUsersCountEstimate
+               "notifications_users_count_estimate" => Report.NotificationsUsersCountEstimate,
+               "max_connections" => Report.MaxConnections,
+               "authentication_timeout" => Report.AuthenticationTimeout
              }
     end
   end