[VOL-4289] Proto changes for gRPC migration
Change-Id: I317a0a865ccf78d0c37aa229c50d293a3f66c8bb
diff --git a/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go
new file mode 100644
index 0000000..e766ac0
--- /dev/null
+++ b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go
@@ -0,0 +1,40 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * 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 envconfig contains grpc settings configured by environment variables.
+package envconfig
+
+import (
+ "os"
+ "strings"
+
+ xdsenv "google.golang.org/grpc/internal/xds/env"
+)
+
+const (
+ prefix = "GRPC_GO_"
+ retryStr = prefix + "RETRY"
+ txtErrIgnoreStr = prefix + "IGNORE_TXT_ERRORS"
+)
+
+var (
+ // Retry is set if retry is explicitly enabled via "GRPC_GO_RETRY=on" or if XDS retry support is enabled.
+ Retry = strings.EqualFold(os.Getenv(retryStr), "on") || xdsenv.RetrySupport
+ // TXTErrIgnore is set if TXT errors should be ignored ("GRPC_GO_IGNORE_TXT_ERRORS" is not "false").
+ TXTErrIgnore = !strings.EqualFold(os.Getenv(txtErrIgnoreStr), "false")
+)