Add partial class for retry settings

Only added to V1, as V1Beta1 hasn't (and can't) go GA, so we can
take breaking changes there.

apis/Google.Cloud.Redis.V1/Google.Cloud.Redis.V1/CloudRedisSettings.cs

@@ -0,0 +1,63 @@
+// Copyright 2019 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
+//
+//     https://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.
+
+using System;
+using gaxgrpc = Google.Api.Gax.Grpc;
+using grpccore = Grpc.Core;
+using sys = System;
+
+namespace Google.Cloud.Redis.V1
+{
+    // This is a partial class introduced for backward compatibility with earlier versions.
+    public partial class CloudRedisSettings
+    {
+        /// <summary>
+        /// In previous releases, this property returned a filter used by default for "Idempotent" RPC methods.
+        /// It is now unused, and may not represent the current default behavior.
+        /// </summary>
+        [Obsolete("This member is no longer called by other code in this library. Please use the individual CallSettings properties.")]
+        public static sys::Predicate<grpccore::RpcException> IdempotentRetryFilter { get; } =
+            gaxgrpc::RetrySettings.FilterForStatusCodes(grpccore::StatusCode.DeadlineExceeded, grpccore::StatusCode.Unavailable);
+
+        /// <summary>
+        /// In previous releases, this property returned a filter used by default for "NonIdempotent" RPC methods.
+        /// It is now unused, and may not represent the current default behavior.
+        /// </summary>
+        [Obsolete("This member is no longer called by other code in this library. Please use the individual CallSettings properties.")]
+        public static sys::Predicate<grpccore::RpcException> NonIdempotentRetryFilter { get; } =
+            gaxgrpc::RetrySettings.FilterForStatusCodes();
+
+        /// <summary>
+        /// In previous releases, this method returned the backoff used by default for "Idempotent" RPC methods.
+        /// It is now unused, and may not represent the current default behavior.
+        /// </summary>
+        [Obsolete("This member is no longer called by other code in this library. Please use the individual CallSettings properties.")]
+        public static gaxgrpc::BackoffSettings GetDefaultRetryBackoff() => new gaxgrpc::BackoffSettings(
+            delay: sys::TimeSpan.FromMilliseconds(100),
+            maxDelay: sys::TimeSpan.FromMilliseconds(60000),
+            delayMultiplier: 1.3
+        );
+
+        /// <summary>
+        /// In previous releases, this method returned the backoff used by default for "NonIdempotent" RPC methods.
+        /// It is now unused, and may not represent the current default behavior.
+        /// </summary>
+        [Obsolete("This member is no longer called by other code in this library. Please use the individual CallSettings properties.")]
+        public static gaxgrpc::BackoffSettings GetDefaultTimeoutBackoff() => new gaxgrpc::BackoffSettings(
+            delay: sys::TimeSpan.FromMilliseconds(20000),
+            maxDelay: sys::TimeSpan.FromMilliseconds(20000),
+            delayMultiplier: 1.0
+        );
+    }
+}