add DeliveryModes convenience enum

projects/RabbitMQ.Client/client/api/BasicProperties.cs

@@ -45,7 +45,7 @@ public struct BasicProperties : IBasicProperties, IAmqpHeader
         public string? ContentType { get; set; }
         public string? ContentEncoding { get; set; }
         public IDictionary<string, object?>? Headers { get; set; }
-        public byte DeliveryMode { get; set; }
+        public DeliveryModes DeliveryMode { get; set; }
         public byte Priority { get; set; }
         public string? CorrelationId { get; set; }
         public string? ReplyTo { get; set; }
@@ -59,8 +59,15 @@ public struct BasicProperties : IBasicProperties, IAmqpHeader
 
         public bool Persistent
         {
-            readonly get { return DeliveryMode == 2; }
-            set { DeliveryMode = value ? (byte)2 : (byte)1; }
+            get
+            {
+                return DeliveryMode == DeliveryModes.Persistent;
+            }
+
+            set
+            {
+                DeliveryMode = value ? DeliveryModes.Persistent : DeliveryModes.Transient;
+            }
         }
 
         public PublicationAddress? ReplyToAddress
@@ -171,7 +178,7 @@ readonly int IAmqpWriteable.WriteTo(Span<byte> span)
             if (IsDeliveryModePresent())
             {
                 bitValue.SetBit(DeliveryModeBit);
-                span.GetOffset(offset++) = DeliveryMode;
+                span.GetOffset(offset++) = (byte)DeliveryMode;
             }
 
             if (IsPriorityPresent())

projects/RabbitMQ.Client/client/api/DeliveryModes.cs

@@ -0,0 +1,49 @@
+// This source code is dual-licensed under the Apache License, version
+// 2.0, and the Mozilla Public License, version 2.0.
+//
+// The APL v2.0:
+//
+//---------------------------------------------------------------------------
+//   Copyright (c) 2007-2020 VMware, 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
+//
+//       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.
+//---------------------------------------------------------------------------
+//
+// The MPL v2.0:
+//
+//---------------------------------------------------------------------------
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+//
+//  Copyright (c) 2007-2020 VMware, Inc.  All rights reserved.
+//---------------------------------------------------------------------------
+
+namespace RabbitMQ.Client
+{
+    /// <summary>
+    /// Convenience enum providing compile-time names for persistent modes.
+    /// </summary>
+    public enum DeliveryModes : byte
+    {
+        /// <summary>
+        /// Value for transient delivery mode (not durable).
+        /// </summary>
+        Transient = 1,
+
+        /// <summary>
+        /// Value for persistent delivery mode (durable).
+        /// </summary>
+        Persistent = 2
+    }
+}

projects/RabbitMQ.Client/client/api/IBasicProperties.cs

@@ -69,7 +69,7 @@ public interface IReadOnlyBasicProperties
         /// <summary>
         /// Non-persistent (1) or persistent (2).
         /// </summary>
-        byte DeliveryMode { get; }
+        DeliveryModes DeliveryMode { get; }
 
         /// <summary>
         /// Message expiration specification.
@@ -236,7 +236,7 @@ public interface IBasicProperties : IReadOnlyBasicProperties
         /// <summary>
         /// Non-persistent (1) or persistent (2).
         /// </summary>
-        new byte DeliveryMode { get; set; }
+        new DeliveryModes DeliveryMode { get; set; }
 
         /// <summary>
         /// Message expiration specification.

projects/RabbitMQ.Client/client/api/ReadonlyBasicProperties.cs

@@ -44,7 +44,7 @@ namespace RabbitMQ.Client
         private readonly string? _contentType;
         private readonly string? _contentEncoding;
         private readonly IDictionary<string, object?>? _headers;
-        private readonly byte _deliveryMode;
+        private readonly DeliveryModes _deliveryMode;
         private readonly byte _priority;
         private readonly string? _correlationId;
         private readonly string? _replyTo;
@@ -59,7 +59,7 @@ namespace RabbitMQ.Client
         public string? ContentType => _contentType;
         public string? ContentEncoding => _contentEncoding;
         public IDictionary<string, object?>? Headers => _headers;
-        public byte DeliveryMode => _deliveryMode;
+        public DeliveryModes DeliveryMode => _deliveryMode;
         public byte Priority => _priority;
         public string? CorrelationId => _correlationId;
         public string? ReplyTo => _replyTo;
@@ -71,7 +71,7 @@ namespace RabbitMQ.Client
         public string? AppId => _appId;
         public string? ClusterId => _clusterId;
 
-        public bool Persistent => DeliveryMode == 2;
+        public bool Persistent => DeliveryMode == DeliveryModes.Persistent;
 
         public PublicationAddress? ReplyToAddress
         {
@@ -90,7 +90,7 @@ public ReadOnlyBasicProperties(ReadOnlySpan<byte> span)
             if (bits.IsBitSet(BasicProperties.ContentTypeBit)) { offset += WireFormatting.ReadShortstr(span.Slice(offset), out _contentType); }
             if (bits.IsBitSet(BasicProperties.ContentEncodingBit)) { offset += WireFormatting.ReadShortstr(span.Slice(offset), out _contentEncoding); }
             if (bits.IsBitSet(BasicProperties.HeaderBit)) { offset += WireFormatting.ReadDictionary(span.Slice(offset), out var tmpDirectory); _headers = tmpDirectory; }
-            if (bits.IsBitSet(BasicProperties.DeliveryModeBit)) { _deliveryMode = span[offset++]; }
+            if (bits.IsBitSet(BasicProperties.DeliveryModeBit)) { _deliveryMode = (DeliveryModes)span[offset++]; }
             if (bits.IsBitSet(BasicProperties.PriorityBit)) { _priority = span[offset++]; }
             if (bits.IsBitSet(BasicProperties.CorrelationIdBit)) { offset += WireFormatting.ReadShortstr(span.Slice(offset), out _correlationId); }
             if (bits.IsBitSet(BasicProperties.ReplyToBit)) { offset += WireFormatting.ReadShortstr(span.Slice(offset), out _replyTo); }

projects/RabbitMQ.Client/client/impl/EmptyBasicProperty.cs

@@ -27,7 +27,7 @@ int IAmqpWriteable.GetRequiredBufferSize()
         public string? ContentEncoding => default;
         public string? ContentType => default;
         public string? CorrelationId => default;
-        public byte DeliveryMode => default;
+        public DeliveryModes DeliveryMode => default;
         public string? Expiration => default;
         public IDictionary<string, object?>? Headers => default;
         public string? MessageId => default;

projects/Unit/APIApproval.Approve.verified.txt

@@ -72,7 +72,7 @@ namespace RabbitMQ.Client
         public string? ContentEncoding { get; set; }
         public string? ContentType { get; set; }
         public string? CorrelationId { get; set; }
-        public byte DeliveryMode { get; set; }
+        public RabbitMQ.Client.DeliveryModes DeliveryMode { get; set; }
         public string? Expiration { get; set; }
         public System.Collections.Generic.IDictionary<string, object?>? Headers { get; set; }
         public string? MessageId { get; set; }
@@ -248,6 +248,11 @@ namespace RabbitMQ.Client
         public DefaultEndpointResolver(System.Collections.Generic.IEnumerable<RabbitMQ.Client.AmqpTcpEndpoint> tcpEndpoints) { }
         public System.Collections.Generic.IEnumerable<RabbitMQ.Client.AmqpTcpEndpoint> All() { }
     }
+    public enum DeliveryModes : byte
+    {
+        Transient = 1,
+        Persistent = 2,
+    }
     public static class EndpointResolverExtensions
     {
         public static T SelectOne<T>(this RabbitMQ.Client.IEndpointResolver resolver, System.Func<RabbitMQ.Client.AmqpTcpEndpoint, T> selector) { }
@@ -333,7 +338,7 @@ namespace RabbitMQ.Client
         new string? ContentEncoding { get; set; }
         new string? ContentType { get; set; }
         new string? CorrelationId { get; set; }
-        new byte DeliveryMode { get; set; }
+        new RabbitMQ.Client.DeliveryModes DeliveryMode { get; set; }
         new string? Expiration { get; set; }
         new System.Collections.Generic.IDictionary<string, object?>? Headers { get; set; }
         new string? MessageId { get; set; }
@@ -527,7 +532,7 @@ namespace RabbitMQ.Client
         string? ContentEncoding { get; }
         string? ContentType { get; }
         string? CorrelationId { get; }
-        byte DeliveryMode { get; }
+        RabbitMQ.Client.DeliveryModes DeliveryMode { get; }
         string? Expiration { get; }
         System.Collections.Generic.IDictionary<string, object?>? Headers { get; }
         string? MessageId { get; }
@@ -610,7 +615,7 @@ namespace RabbitMQ.Client
         public string? ContentEncoding { get; }
         public string? ContentType { get; }
         public string? CorrelationId { get; }
-        public byte DeliveryMode { get; }
+        public RabbitMQ.Client.DeliveryModes DeliveryMode { get; }
         public string? Expiration { get; }
         public System.Collections.Generic.IDictionary<string, object?>? Headers { get; }
         public string? MessageId { get; }

projects/Unit/TestBasicProperties.cs

@@ -48,7 +48,7 @@ public void TestPersistentPropertyChangesDeliveryMode_PersistentTrueDelivery2()
             };
 
             // Assert
-            Assert.Equal(2, subject.DeliveryMode);
+            Assert.Equal(DeliveryModes.Persistent, subject.DeliveryMode);
             Assert.True(subject.Persistent);
 
             Span<byte> span = new byte[1024];
@@ -57,13 +57,13 @@ public void TestPersistentPropertyChangesDeliveryMode_PersistentTrueDelivery2()
             // Read from Stream
             var propertiesFromStream = new ReadOnlyBasicProperties(span.Slice(0, offset));
 
-            Assert.Equal(2, propertiesFromStream.DeliveryMode);
+            Assert.Equal(DeliveryModes.Persistent, propertiesFromStream.DeliveryMode);
             Assert.True(propertiesFromStream.Persistent);
 
             // Verify Basic Properties
             var basicProperties = new BasicProperties(propertiesFromStream);
 
-            Assert.Equal(2, basicProperties.DeliveryMode);
+            Assert.Equal(DeliveryModes.Persistent, basicProperties.DeliveryMode);
             Assert.True(basicProperties.Persistent);
         }
 
@@ -79,7 +79,7 @@ public void TestPersistentPropertyChangesDeliveryMode_PersistentFalseDelivery1()
             };
 
             // Assert
-            Assert.Equal(1, subject.DeliveryMode);
+            Assert.Equal(DeliveryModes.Transient, subject.DeliveryMode);
             Assert.False(subject.Persistent);
 
             Span<byte> span = new byte[1024];
@@ -88,13 +88,13 @@ public void TestPersistentPropertyChangesDeliveryMode_PersistentFalseDelivery1()
             // Read from Stream
             var propertiesFromStream = new ReadOnlyBasicProperties(span.Slice(0, offset));
 
-            Assert.Equal(1, propertiesFromStream.DeliveryMode);
+            Assert.Equal(DeliveryModes.Transient, propertiesFromStream.DeliveryMode);
             Assert.False(propertiesFromStream.Persistent);
 
             // Verify Basic Properties
             var basicProperties = new BasicProperties(propertiesFromStream);
 
-            Assert.Equal(1, basicProperties.DeliveryMode);
+            Assert.Equal(DeliveryModes.Transient, basicProperties.DeliveryMode);
             Assert.False(basicProperties.Persistent);
         }
 

projects/Unit/TestContentHeaderCodec.cs

@@ -84,7 +84,7 @@ public void TestFullProperties()
                     ContentEncoding = "C",
                     ClusterId = "D",
                     CorrelationId = "E",
-                    DeliveryMode = 1,
+                    DeliveryMode = DeliveryModes.Transient,
                     Expiration = "F",
                     MessageId = "G",
                     Priority = 2,