Accept structs as structured logs in Sentry.LoggerHandler (#780)

Author: mrdotb

lib/sentry/logger_handler.ex

@@ -338,7 +338,12 @@ defmodule Sentry.LoggerHandler do
     log_from_crash_reason(log_event.meta[:crash_reason], unicode_chardata, sentry_opts, config)
   end
 
-  # "report" here is of type logger:report/0, which is a map or keyword list.
+  # "report" here is of type logger:report/0, which is a struct, map or keyword list.
+  defp log_unfiltered(%{msg: {:report, report}}, sentry_opts, %__MODULE__{} = config)
+       when is_struct(report) do
+    capture(:message, inspect(report), sentry_opts, config)
+  end
+
   defp log_unfiltered(%{msg: {:report, report}}, sentry_opts, %__MODULE__{} = config) do
     case Map.new(report) do
       %{reason: {exception, stacktrace}}

test/sentry/logger_handler_test.exs

@@ -136,7 +136,7 @@ defmodule Sentry.LoggerHandlerTest do
     end
 
     @tag handler_config: %{capture_log_messages: true}
-    test "support structured logs", %{sender_ref: ref} do
+    test "support structured logs keyword", %{sender_ref: ref} do
       Logger.error(foo: "bar")
 
       assert_receive {^ref, event}
@@ -145,6 +145,28 @@ defmodule Sentry.LoggerHandlerTest do
       refute_received {^ref, _event}, 100
     end
 
+    test "support structured logs map", %{sender_ref: ref} do
+      Logger.error(%{foo: "bar"})
+
+      assert_receive {^ref, event}
+      assert event.message.formatted == "%{foo: \"bar\"}"
+
+      refute_received {^ref, _event}, 100
+    end
+
+    defmodule Foo do
+      defstruct [:bar]
+    end
+
+    test "support structured logs struct", %{sender_ref: ref} do
+      Logger.error(%Foo{})
+
+      assert_receive {^ref, event}
+      assert event.message.formatted == "%Sentry.LoggerHandlerTest.Foo{bar: nil}"
+
+      refute_received {^ref, _event}, 100
+    end
+
     @tag handler_config: %{capture_log_messages: true, level: :warning}
     test "respects the configured :level", %{sender_ref: ref} do
       Logger.log(:warning, "Testing warning")