Support round-trip CRD (de)serialization (#1034)

* Support round-trip CRD (de)serialization

* Add a floating point emitter to fix UT

* Unused using

* Stylecop

* Reduce warnings

Author: stan-sz

src/KubernetesClient.Models/FloatEmitter.cs

@@ -0,0 +1,32 @@
+using YamlDotNet.Core;
+using YamlDotNet.Core.Events;
+using YamlDotNet.Serialization;
+using YamlDotNet.Serialization.EventEmitters;
+
+namespace k8s
+{
+    internal class FloatEmitter : ChainedEventEmitter
+    {
+        public FloatEmitter(IEventEmitter nextEmitter)
+            : base(nextEmitter)
+        {
+        }
+
+        public override void Emit(ScalarEventInfo eventInfo, IEmitter emitter)
+        {
+            switch (eventInfo.Source.Value)
+            {
+                // Floating point numbers should always render at least one zero (e.g. 1.0f => '1.0' not '1')
+                case double d:
+                    emitter.Emit(new Scalar(d.ToString("0.0######################")));
+                    break;
+                case float f:
+                    emitter.Emit(new Scalar(f.ToString("0.0######################")));
+                    break;
+                default:
+                    base.Emit(eventInfo, emitter);
+                    break;
+            }
+        }
+    }
+}

src/KubernetesClient.Models/KubernetesYaml.cs

@@ -21,6 +21,7 @@ public static class KubernetesYaml
                 .WithTypeConverter(new IntOrStringYamlConverter())
                 .WithTypeConverter(new ByteArrayStringYamlConverter())
                 .WithTypeConverter(new ResourceQuantityYamlConverter())
+                .WithAttemptingUnquotedStringTypeDeserialization()
                 .WithOverridesFromJsonPropertyAttributes()
                 .IgnoreUnmatchedProperties()
                 .Build();
@@ -33,6 +34,7 @@ public static class KubernetesYaml
                 .WithTypeConverter(new ByteArrayStringYamlConverter())
                 .WithTypeConverter(new ResourceQuantityYamlConverter())
                 .WithEventEmitter(e => new StringQuotingEmitter(e))
+                .WithEventEmitter(e => new FloatEmitter(e))
                 .ConfigureDefaultValuesHandling(DefaultValuesHandling.OmitNull)
                 .WithOverridesFromJsonPropertyAttributes()
                 .BuildValueSerializer();

src/KubernetesClient/CertUtils.cs

@@ -104,7 +104,6 @@ public static X509Certificate2 GeneratePfx(KubernetesClientConfiguration config)
                 {
                     cert = new X509Certificate2(cert.Export(X509ContentType.Pkcs12));
                 }
-                
             }
 
             return cert;

tests/KubernetesClient.Tests/KubernetesYamlTests.cs

@@ -841,5 +841,56 @@ public void DeserializeWithJsonPropertyName()
             var ver = result.Spec.Versions[0];
             Assert.Equal(true, ver?.Schema?.OpenAPIV3Schema?.XKubernetesIntOrString);
         }
+
+#pragma warning disable CA1812 // Class is used for YAML deserialization tests
+        [KubernetesEntity(Group = KubeGroup, Kind = KubeKind, ApiVersion = KubeApiVersion, PluralName = KubePluralName)]
+        private sealed class V1AlphaFoo : IKubernetesObject<V1ObjectMeta>, ISpec<Dictionary<string, object>>
+        {
+            public const string KubeApiVersion = "v1alpha";
+            public const string KubeKind = "foo";
+            public const string KubeGroup = "foo.bar";
+            public const string KubePluralName = "foos";
+
+            public string ApiVersion { get; set; }
+            public string Kind { get; set; }
+            public V1ObjectMeta Metadata { get; set; }
+            public Dictionary<string, object> Spec { get; set; }
+
+            public V1AlphaFoo()
+            {
+                Metadata = new V1ObjectMeta();
+                Spec = new Dictionary<string, object>();
+            }
+        }
+#pragma warning restore CA1812 // Class is used for YAML deserialization tests
+
+        [Fact]
+        public void LoadAllFromStringWithTypeMapGenericCRD()
+        {
+            var content = @"apiVersion: foo.bar/v1alpha
+kind: Foo
+metadata:
+  name: foo
+  namespace: ns
+spec:
+  bool: false
+  byte: 123
+  float: 12.0
+";
+
+            var objs = KubernetesYaml.LoadAllFromString(content, new Dictionary<string, Type>
+            {
+                { $"{V1AlphaFoo.KubeGroup}/{V1AlphaFoo.KubeApiVersion}/Foo", typeof(V1AlphaFoo) },
+            });
+            Assert.Single(objs);
+            var v1AlphaFoo = Assert.IsType<V1AlphaFoo>(objs[0]);
+            Assert.Equal("foo", v1AlphaFoo.Metadata.Name);
+            Assert.Equal("ns", v1AlphaFoo.Metadata.NamespaceProperty);
+            Assert.Equal(3, v1AlphaFoo.Spec.Count);
+            Assert.False(Assert.IsType<bool>(v1AlphaFoo.Spec["bool"]));
+            Assert.Equal(123, Assert.IsType<byte>(v1AlphaFoo.Spec["byte"]));
+            Assert.Equal(12.0, Assert.IsType<float>(v1AlphaFoo.Spec["float"]), 3);
+            Assert.Equal(content.Replace("\r\n", "\n"), KubernetesYaml.SerializeAll(objs).Replace("\r\n", "\n"));
+        }
     }
 }