add utility for reading http status from psrpc error

rpc/error.go

@@ -0,0 +1,29 @@
+// Copyright 2023 LiveKit, Inc.
+//
+// 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.
+
+package rpc
+
+import (
+	"errors"
+
+	"github.com/livekit/psrpc"
+)
+
+func ErrHttpStatus(err error) (int, bool) {
+	var psrpcErr psrpc.Error
+	if errors.As(err, &psrpcErr) {
+		return psrpcErr.ToHttp(), true
+	}
+	return 0, false
+}

rpc/error_test.go

@@ -0,0 +1,30 @@
+// Copyright 2023 LiveKit, Inc.
+//
+// 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.
+
+package rpc
+
+import (
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/livekit/psrpc"
+)
+
+func TestErrHttpStatus(t *testing.T) {
+	code, ok := ErrHttpStatus(psrpc.NewErrorf(psrpc.NotFound, "not found"))
+	require.True(t, ok)
+	require.Equal(t, http.StatusNotFound, code)
+}