TrackedResource Serialization (#19855)

* Resource Serialization

* Divide Resource class

* Update writer

* TrackedResource Serialization

* Update Deserialization

* Update Test

* Update Tests

* Update Tracked Resource

* Fix PR

* Remove readonly

sdk/resourcemanager/Azure.ResourceManager.Core/src/Resources/TrackedResource.Serialization.cs

@@ -0,0 +1,48 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Text.Json;
+using Azure.Core;
+
+namespace Azure.ResourceManager.Core
+{
+    /// <summary>
+    /// Generic representation of a tracked resource.  All tracked resources should extend this class
+    /// </summary>
+    public abstract partial class TrackedResource<TIdentifier> : IUtf8JsonSerializable
+    {
+        /// <summary>
+        /// Serialize the input TrackedResource object.
+        /// </summary>
+        /// <param name="writer"> Input Json writer. </param>
+        void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
+        {
+            if (writer is null)
+            {
+                throw new ArgumentNullException(nameof(writer));
+            }
+
+            writer.WriteStartObject();
+            if (Optional.IsDefined(Location))
+            {
+                writer.WritePropertyName("location");
+                writer.WriteStringValue(Location.Name);
+            }
+            if (Optional.IsCollectionDefined(Tags))
+            {
+                writer.WritePropertyName("tags");
+                writer.WriteStartObject();
+                foreach (var item in Tags)
+                {
+                    writer.WritePropertyName(item.Key);
+                    writer.WriteStringValue(item.Value);
+                }
+                writer.WriteEndObject();
+            }
+            writer.WriteEndObject();
+        }
+    }
+}

sdk/resourcemanager/Azure.ResourceManager.Core/src/Resources/TrackedResource.cs

@@ -10,13 +10,13 @@ namespace Azure.ResourceManager.Core
     /// Generic representation of a tracked resource.  All tracked resources should extend this class
     /// </summary>
     [ReferenceType]
-    public abstract class TrackedResource<TIdentifier> : Resource<TIdentifier> where TIdentifier : TenantResourceIdentifier
+    public abstract partial class TrackedResource<TIdentifier> : Resource<TIdentifier> where TIdentifier : TenantResourceIdentifier
     {
+        private IDictionary<string, string> _tag = new Dictionary<string, string>(StringComparer.InvariantCultureIgnoreCase);
         /// <summary>
         /// Gets the tags.
         /// </summary>
-        public virtual IDictionary<string, string> Tags =>
-            new Dictionary<string, string>(StringComparer.InvariantCultureIgnoreCase);
+        public virtual IDictionary<string, string> Tags => _tag;
 
         /// <summary>
         /// Gets or sets the location the resource is in.

sdk/resourcemanager/Azure.ResourceManager.Core/tests/Unit/Resource/TestTrackedResource.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Azure.ResourceManager.Core.Tests
+{
+    public class TestTrackedResource<TIdentifier> : TrackedResource<TIdentifier> where TIdentifier : TenantResourceIdentifier
+    {
+        public TestTrackedResource(string id) : this(id, LocationData.Default)
+        {
+            Id = ResourceIdentifier.Create(id) as TIdentifier;
+        }
+
+        public TestTrackedResource(string id, string location)
+        {
+            Id = ResourceIdentifier.Create(id) as TIdentifier;
+            Location = location;
+        }
+
+        public override TIdentifier Id { get; protected set; }
+    }
+}

sdk/resourcemanager/Azure.ResourceManager.Core/tests/Unit/TrackedResourceTests.cs

@@ -0,0 +1,53 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Azure.Core;
+using NUnit.Framework;
+
+namespace Azure.ResourceManager.Core.Tests
+{
+    [Parallelizable]
+    public class TrackedResourceTests
+    {
+        [Test]
+        public void SerializationTest()
+        {
+            string expected = "{\"properties\":{\"location\":\"eastus\",\"tags\":{\"key1\":\"value1\",\"key2\":\"value2\"}}}";
+            TestTrackedResource<ResourceGroupResourceIdentifier> data = new("/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/testRg/providers/Microsoft.ClassicStorage/storageAccounts/account1", LocationData.EastUS);
+            data.Tags.Add("key1", "value1");
+            data.Tags.Add("key2", "value2");
+            var stream = new MemoryStream();
+            Utf8JsonWriter writer = new(stream, new JsonWriterOptions());
+            writer.WriteStartObject();
+            writer.WritePropertyName("properties");
+            writer.WriteObjectValue(data);
+            writer.WriteEndObject();
+            writer.Flush();
+            string json = Encoding.UTF8.GetString(stream.ToArray());
+            Assert.IsTrue(expected.Equals(json));
+        }
+
+        [Test]
+        public void InvalidSerializationTest()
+        {
+            string expected = "{\"properties\":{\"location\":\"westus\",\"tags\":{}}}";
+            TestTrackedResource<ResourceGroupResourceIdentifier> data = new("/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/foo");
+            var stream = new MemoryStream();
+            Utf8JsonWriter writer = new(stream, new JsonWriterOptions());
+            writer.WriteStartObject();
+            writer.WritePropertyName("properties");
+            writer.WriteObjectValue(data);
+            writer.WriteEndObject();
+            writer.Flush();
+            string json = Encoding.UTF8.GetString(stream.ToArray());
+            Assert.IsTrue(expected.Equals(json));
+        }
+    }
+}