feat(repo): let it crash!

- Realm Management :: does not handle Xandra errors anymore in the repo
    itself, it will be the rpc caller to do so.

Signed-off-by: Luca Zaninotto <luca.zaninotto@secomind.com>

Author: lusergit

apps/astarte_realm_management/lib/astarte_realm_management/repo.ex

@@ -27,8 +27,6 @@ defmodule Astarte.RealmManagement.Repo do
   alias Astarte.DataAccess.Config
   require Ecto.Query
 
-  @keyspace_does_not_exist_regex ~r/Keyspace (.*) does not exist/
-
   @impl Ecto.Repo
   def init(_context, config) do
     config =
@@ -53,63 +51,15 @@ defmodule Astarte.RealmManagement.Repo do
   def fetch_one(queryable, opts \\ []) do
     {error, opts} = Keyword.pop_first(opts, :error, :not_found)
 
-    try do
-      case all(queryable, opts) do
-        [item] -> {:ok, item}
-        [] -> {:error, error}
-        other -> raise Ecto.MultipleResultsError, queryable: queryable, count: length(other)
-      end
-    rescue
-      err in Xandra.Error ->
-        handle_xandra_error(err)
-
-      err in Xandra.ConnectionError ->
-        _ =
-          Logger.warning("Database connection error #{Exception.message(err)}.",
-            tag: "database_connection_error"
-          )
-
-        {:error, :database_connection_error}
+    case all(queryable, opts) do
+      [item] -> {:ok, item}
+      [] -> {:error, error}
+      other -> raise Ecto.MultipleResultsError, queryable: queryable, count: length(other)
     end
   end
 
   def fetch_all(queryable, opts \\ []) do
-    try do
-      {:ok, all(queryable, opts)}
-    rescue
-      err in Xandra.Error ->
-        handle_xandra_error(err)
-
-      err in Xandra.ConnectionError ->
-        _ =
-          Logger.warning("Database connection error #{Exception.message(err)}.",
-            tag: "database_connection_error"
-          )
-
-        {:error, :database_connection_error}
-    end
-  end
-
-  defp handle_xandra_error(error) do
-    %Xandra.Error{message: message} = error
-
-    case Regex.run(@keyspace_does_not_exist_regex, message) do
-      [_message, keyspace] ->
-        Logger.warning("Keyspace #{keyspace} does not exist.",
-          tag: "realm_not_found"
-        )
-
-        {:error, :realm_not_found}
-
-      nil ->
-        _ =
-          Logger.warning(
-            "Database error: #{Exception.message(error)}.",
-            tag: "database_error"
-          )
-
-        {:error, :database_error}
-    end
+    {:ok, all(queryable, opts)}
   end
 
   @doc """

apps/astarte_realm_management/test/astarte_realm_management/engine_test.exs

@@ -1194,7 +1194,7 @@ defmodule Astarte.RealmManagement.EngineTest do
   end
 
   test "get JWT public key PEM with unexisting realm" do
-    assert Engine.get_jwt_public_key_pem("notexisting") == {:error, :realm_not_found}
+    assert_raise Xandra.Error, fn -> Engine.get_jwt_public_key_pem("notexisting") end
   end
 
   test "update JWT public key PEM" do
@@ -1212,10 +1212,6 @@ defmodule Astarte.RealmManagement.EngineTest do
              {:ok, DatabaseTestHelper.jwt_public_key_pem_fixture()}
   end
 
-  test "update JWT public key PEM with unexisting realm" do
-    assert Engine.get_jwt_public_key_pem("notexisting") == {:error, :realm_not_found}
-  end
-
   test "install HTTP trigger" do
     trigger_name = "http_trigger"