[VOL-4289] Proto changes for gRPC migration
Change-Id: I317a0a865ccf78d0c37aa229c50d293a3f66c8bb
diff --git a/vendor/google.golang.org/grpc/connectivity/connectivity.go b/vendor/google.golang.org/grpc/connectivity/connectivity.go
new file mode 100644
index 0000000..4a89926
--- /dev/null
+++ b/vendor/google.golang.org/grpc/connectivity/connectivity.go
@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright 2017 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 connectivity defines connectivity semantics.
+// For details, see https://github.com/grpc/grpc/blob/master/doc/connectivity-semantics-and-api.md.
+package connectivity
+
+import (
+ "google.golang.org/grpc/grpclog"
+)
+
+var logger = grpclog.Component("core")
+
+// State indicates the state of connectivity.
+// It can be the state of a ClientConn or SubConn.
+type State int
+
+func (s State) String() string {
+ switch s {
+ case Idle:
+ return "IDLE"
+ case Connecting:
+ return "CONNECTING"
+ case Ready:
+ return "READY"
+ case TransientFailure:
+ return "TRANSIENT_FAILURE"
+ case Shutdown:
+ return "SHUTDOWN"
+ default:
+ logger.Errorf("unknown connectivity state: %d", s)
+ return "INVALID_STATE"
+ }
+}
+
+const (
+ // Idle indicates the ClientConn is idle.
+ Idle State = iota
+ // Connecting indicates the ClientConn is connecting.
+ Connecting
+ // Ready indicates the ClientConn is ready for work.
+ Ready
+ // TransientFailure indicates the ClientConn has seen a failure but expects to recover.
+ TransientFailure
+ // Shutdown indicates the ClientConn has started shutting down.
+ Shutdown
+)
+
+// ServingMode indicates the current mode of operation of the server.
+//
+// Only xDS enabled gRPC servers currently report their serving mode.
+type ServingMode int
+
+const (
+ // ServingModeStarting indicates that the server is starting up.
+ ServingModeStarting ServingMode = iota
+ // ServingModeServing indicates that the server contains all required
+ // configuration and is serving RPCs.
+ ServingModeServing
+ // ServingModeNotServing indicates that the server is not accepting new
+ // connections. Existing connections will be closed gracefully, allowing
+ // in-progress RPCs to complete. A server enters this mode when it does not
+ // contain the required configuration to serve RPCs.
+ ServingModeNotServing
+)
+
+func (s ServingMode) String() string {
+ switch s {
+ case ServingModeStarting:
+ return "STARTING"
+ case ServingModeServing:
+ return "SERVING"
+ case ServingModeNotServing:
+ return "NOT_SERVING"
+ default:
+ logger.Errorf("unknown serving mode: %d", s)
+ return "INVALID_MODE"
+ }
+}