Enhance health API endpoint: better parsing HEALTHY_BLOCKS_PERIOD and use it in the response

CHANGELOG.md

@@ -3,6 +3,7 @@
 ### Features
 
 ### Fixes
+- [#5904](https://github.com/blockscout/blockscout/pull/5904) - Enhance health API endpoint: better parsing HEALTHY_BLOCKS_PERIOD and use it in the response
 - [#5809](https://github.com/blockscout/blockscout/pull/5809) - Fix 404 on `/metadata` page
 - [#5786](https://github.com/blockscout/blockscout/pull/5786) - Replace `current_path` with `Controller.current_full_path` in two controllers
 - [#5807](https://github.com/blockscout/blockscout/pull/5807) - Update Makefile migrate command due to release build

apps/block_scout_web/lib/block_scout_web/controllers/api/v1/health_controller.ex

@@ -3,6 +3,7 @@ defmodule BlockScoutWeb.API.V1.HealthController do
 
   alias BlockScoutWeb.API.APILogger
   alias Explorer.Chain
+  alias Timex.Duration
 
   def health(conn, _) do
     APILogger.log(conn)
@@ -39,12 +40,20 @@ defmodule BlockScoutWeb.API.V1.HealthController do
   end
 
   def error({:error, number, timestamp}) do
+    healthy_blocks_period = Application.get_env(:explorer, :healthy_blocks_period)
+
+    healthy_blocks_period_formatted =
+      healthy_blocks_period
+      |> Duration.from_milliseconds()
+      |> Duration.to_minutes()
+      |> trunc()
+
     %{
       "healthy" => false,
       "error_code" => 5001,
       "error_title" => "blocks fetching is stuck",
       "error_description" =>
-        "There are no new blocks in the DB for the last 5 mins. Check the healthiness of Ethereum archive node or the Blockscout DB instance",
+        "There are no new blocks in the DB for the last #{healthy_blocks_period_formatted} mins. Check the healthiness of Ethereum archive node or the Blockscout DB instance",
       "data" => %{
         "latest_block_number" => to_string(number),
         "latest_block_inserted_at" => to_string(timestamp)

config/runtime.exs

@@ -158,6 +158,12 @@ config :ethereum_jsonrpc, EthereumJSONRPC.Geth, debug_trace_transaction_timeout:
 disable_indexer = System.get_env("DISABLE_INDEXER")
 disable_webapp = System.get_env("DISABLE_WEBAPP")
 
+healthy_blocks_period =
+  System.get_env("HEALTHY_BLOCKS_PERIOD", "5")
+  |> Integer.parse()
+  |> elem(0)
+  |> :timer.minutes()
+
 config :explorer,
   coin: System.get_env("COIN") || "POA",
   coin_name: System.get_env("COIN_NAME") || System.get_env("COIN") || "POA",
@@ -166,7 +172,7 @@ config :explorer,
       "homestead,tangerineWhistle,spuriousDragon,byzantium,constantinople,petersburg,istanbul,berlin,london,default",
   include_uncles_in_average_block_time:
     if(System.get_env("UNCLES_IN_AVERAGE_BLOCK_TIME") == "true", do: true, else: false),
-  healthy_blocks_period: System.get_env("HEALTHY_BLOCKS_PERIOD") || :timer.minutes(5),
+  healthy_blocks_period: healthy_blocks_period,
   realtime_events_sender:
     if(disable_webapp != "true",
       do: Explorer.Chain.Events.SimpleSender,