Initial checkin of gRPC to third_party/

third_party/grpc/src/csharp/Grpc.Core/ChannelState.cs

Index: third_party/grpc/src/csharp/Grpc.Core/ChannelState.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/Reflection/IDescriptor.cs b/third_party/grpc/src/csharp/Grpc.Core/ChannelState.cs
similarity index 72%
copy from third_party/protobuf/csharp/src/Google.Protobuf/Reflection/IDescriptor.cs
copy to third_party/grpc/src/csharp/Grpc.Core/ChannelState.cs
index 318d58c968a58a35a3ccd45ee1c7b1f0df275546..d293b98f7537876b5fd3579ceaa1aff21cb0db3c 100644
--- a/third_party/protobuf/csharp/src/Google.Protobuf/Reflection/IDescriptor.cs
+++ b/third_party/grpc/src/csharp/Grpc.Core/ChannelState.cs
@@ -1,7 +1,7 @@
 #region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
@@ -28,28 +28,42 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 #endregion
 
-namespace Google.Protobuf.Reflection
+using System;
+
+namespace Grpc.Core
 {
     /// <summary>
-    /// Interface implemented by all descriptor types.
+    /// Connectivity state of a channel.
+    /// Based on grpc_connectivity_state from grpc/grpc.h
     /// </summary>
-    public interface IDescriptor
+    public enum ChannelState
     {
         /// <summary>
-        /// Returns the name of the entity (message, field etc) being described.
+        /// Channel is idle
+        /// </summary>
+        Idle,
+
+        /// <summary>
+        /// Channel is connecting
+        /// </summary>
+        Connecting,
+
+        /// <summary>
+        /// Channel is ready for work
         /// </summary>
-        string Name { get; }
+        Ready,
 
         /// <summary>
-        /// Returns the fully-qualified name of the entity being described.
+        /// Channel has seen a failure but expects to recover
         /// </summary>
-        string FullName { get; }
+        TransientFailure,
 
         /// <summary>
-        /// Returns the descriptor for the .proto file that this entity is part of.
+        /// Channel has seen a failure that it cannot recover from
         /// </summary>
-        FileDescriptor File { get; }
-    }    
-}
+        FatalFailure
+    }
+}