1 files changed, 50 insertions, 0 deletions
diff --git a/nearby/connections/ukey2/ukey2/src/error_handler.rs b/nearby/connections/ukey2/ukey2/src/error_handler.rs
new file mode 100644
index 0000000..0d3eab2
--- /dev/null
+++ b/nearby/connections/ukey2/ukey2/src/error_handler.rs
@@ -0,0 +1,50 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#[derive(Clone)]
+pub enum Severity {
+    Info,
+    Warning,
+    Error,
+}
+
+pub trait ErrorHandler: Send {
+    #[track_caller]
+    fn log_err(&self, severity: Severity, message: String) {
+        self.log_full_err(
+            severity,
+            message,
+            std::panic::Location::caller().file(),
+            std::panic::Location::caller().line(),
+        )
+    }
+
+    fn log_full_err(
+        &self,
+        severity: Severity,
+        message: String,
+        origin_file: &str,
+        origin_line: u32,
+    );
+}
+
+/// An [ErrorHandler] that does nothing.
+#[derive(Default)]
+pub struct NoOpHandler {}
+
+impl ErrorHandler for NoOpHandler {
+    fn log_full_err(&self, _severity: Severity, _message: String, _file: &str, _line: u32) {
+        // no op
+    }
+}