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| 1 | +// Copyright (c) Microsoft Corporation. All rights reserved. |
| 2 | +// Licensed under the MIT License. |
| 3 | + |
| 4 | +using System; |
| 5 | +using System.ClientModel.Primitives; |
| 6 | +using System.Collections.Generic; |
| 7 | +using System.Linq; |
| 8 | +using System.Reflection; |
| 9 | +using System.Text.Json; |
| 10 | + |
| 11 | +namespace Azure.Core.Expressions.DataFactory |
| 12 | +{ |
| 13 | +#pragma warning disable SCM0005 // Type must have a parameterless constructor |
| 14 | + public sealed partial class DataFactoryElement<T> : IJsonModel<DataFactoryElement<T>> |
| 15 | +#pragma warning restore SCM0005 // Type must have a parameterless constructor |
| 16 | + { |
| 17 | + void IJsonModel<DataFactoryElement<T>>.Write(Utf8JsonWriter writer, ModelReaderWriterOptions options) |
| 18 | + { |
| 19 | + var format = options.Format == "W" ? ((IPersistableModel<DataFactoryElement<T>>)this).GetFormatFromOptions(options) : options.Format; |
| 20 | + if (format != "J") |
| 21 | + { |
| 22 | + throw new FormatException($"The model {nameof(DataFactoryElement<T>)} does not support '{format}' format."); |
| 23 | + } |
| 24 | + |
| 25 | + if (Kind == DataFactoryElementKind.Literal) |
| 26 | + { |
| 27 | + SerializeLiteral(writer, options); |
| 28 | + } |
| 29 | + else if (Kind == DataFactoryElementKind.Expression) |
| 30 | + { |
| 31 | + SerializeExpression(writer, ExpressionString!); |
| 32 | + } |
| 33 | + else |
| 34 | + { |
| 35 | + ((IUtf8JsonSerializable)Secret!).Write(writer); |
| 36 | + } |
| 37 | + } |
| 38 | + |
| 39 | + DataFactoryElement<T> IJsonModel<DataFactoryElement<T>>.Create(ref Utf8JsonReader reader, ModelReaderWriterOptions options) |
| 40 | + { |
| 41 | + var format = options.Format == "W" ? ((IPersistableModel<DataFactoryElement<T>>)this).GetFormatFromOptions(options) : options.Format; |
| 42 | + if (format != "J") |
| 43 | + { |
| 44 | + throw new FormatException($"The model {nameof(DataFactoryElement<T>)} does not support '{format}' format."); |
| 45 | + } |
| 46 | + |
| 47 | + using var document = JsonDocument.ParseValue(ref reader); |
| 48 | + return Create(document.RootElement, options); |
| 49 | + } |
| 50 | + |
| 51 | + BinaryData IPersistableModel<DataFactoryElement<T>>.Write(ModelReaderWriterOptions options) |
| 52 | + { |
| 53 | + var format = options.Format == "W" ? ((IPersistableModel<DataFactoryElement<T>>)this).GetFormatFromOptions(options) : options.Format; |
| 54 | + if (format != "J") |
| 55 | + { |
| 56 | + throw new FormatException($"The model {nameof(DataFactoryElement<T>)} does not support '{format}' format."); |
| 57 | + } |
| 58 | + |
| 59 | + return ModelReaderWriter.Write(this, options, DataFactoryContext.Default); |
| 60 | + } |
| 61 | + |
| 62 | + DataFactoryElement<T> IPersistableModel<DataFactoryElement<T>>.Create(BinaryData data, ModelReaderWriterOptions options) |
| 63 | + { |
| 64 | + var format = options.Format == "W" ? ((IPersistableModel<DataFactoryElement<T>>)this).GetFormatFromOptions(options) : options.Format; |
| 65 | + if (format != "J") |
| 66 | + { |
| 67 | + throw new FormatException($"The model {nameof(DataFactoryElement<T>)} does not support '{format}' format."); |
| 68 | + } |
| 69 | + |
| 70 | + using var document = JsonDocument.Parse(data); |
| 71 | + return Create(document.RootElement, options); |
| 72 | + } |
| 73 | + |
| 74 | + string IPersistableModel<DataFactoryElement<T>>.GetFormatFromOptions(ModelReaderWriterOptions options) => "J"; |
| 75 | + |
| 76 | + internal static DataFactoryElement<T> Create(JsonElement element, ModelReaderWriterOptions options) |
| 77 | + { |
| 78 | + if (element.ValueKind == JsonValueKind.Null) |
| 79 | + { |
| 80 | + return null!; |
| 81 | + } |
| 82 | + |
| 83 | + // Check for Expression or Secret (non-literal) elements |
| 84 | + if (TryGetNonLiteral(element, out DataFactoryElement<T?>? nonLiteralElement)) |
| 85 | + { |
| 86 | + return nonLiteralElement!; |
| 87 | + } |
| 88 | + |
| 89 | + // Handle literal values based on type T |
| 90 | + return CreateLiteralElement(element); |
| 91 | + } |
| 92 | + |
| 93 | + private void SerializeLiteral(Utf8JsonWriter writer, ModelReaderWriterOptions options) |
| 94 | + { |
| 95 | + switch (Literal) |
| 96 | + { |
| 97 | + case TimeSpan timeSpan: |
| 98 | + writer.WriteStringValue(timeSpan, "c"); |
| 99 | + break; |
| 100 | + case Uri uri: |
| 101 | + writer.WriteStringValue(uri.AbsoluteUri); |
| 102 | + break; |
| 103 | + case IList<string> stringList: |
| 104 | + writer.WriteStartArray(); |
| 105 | + foreach (string? item in stringList) |
| 106 | + { |
| 107 | + writer.WriteStringValue(item); |
| 108 | + } |
| 109 | + writer.WriteEndArray(); |
| 110 | + break; |
| 111 | + case IDictionary<string, string?> dictionary: |
| 112 | + writer.WriteStartObject(); |
| 113 | + foreach (KeyValuePair<string, string?> pair in dictionary) |
| 114 | + { |
| 115 | + writer.WritePropertyName(pair.Key); |
| 116 | + writer.WriteStringValue(pair.Value); |
| 117 | + } |
| 118 | + writer.WriteEndObject(); |
| 119 | + break; |
| 120 | + case IDictionary<string, BinaryData?> binaryDictionary: |
| 121 | + writer.WriteStartObject(); |
| 122 | + foreach (KeyValuePair<string, BinaryData?> pair in binaryDictionary) |
| 123 | + { |
| 124 | + writer.WritePropertyName(pair.Key); |
| 125 | + if (pair.Value != null) |
| 126 | + { |
| 127 | + using JsonDocument document = JsonDocument.Parse(pair.Value.ToString()); |
| 128 | + document.RootElement.WriteTo(writer); |
| 129 | + } |
| 130 | + else |
| 131 | + { |
| 132 | + writer.WriteNullValue(); |
| 133 | + } |
| 134 | + } |
| 135 | + writer.WriteEndObject(); |
| 136 | + break; |
| 137 | + case BinaryData binaryData: |
| 138 | + using (JsonDocument document = JsonDocument.Parse(binaryData.ToString())) |
| 139 | + { |
| 140 | + document.RootElement.WriteTo(writer); |
| 141 | + } |
| 142 | + break; |
| 143 | + default: |
| 144 | + WriteObjectValue(writer, Literal!, options); |
| 145 | + break; |
| 146 | + } |
| 147 | + } |
| 148 | + |
| 149 | + private void WriteObjectValue<T1>(Utf8JsonWriter writer, T1 value, ModelReaderWriterOptions options) |
| 150 | + { |
| 151 | + switch (value) |
| 152 | + { |
| 153 | + case IJsonModel<T1> jsonModel: |
| 154 | + jsonModel.Write(writer, options); |
| 155 | + break; |
| 156 | + case IEnumerable<KeyValuePair<string, object>> enumerable: |
| 157 | + writer.WriteStartObject(); |
| 158 | + foreach (KeyValuePair<string, object> pair in enumerable) |
| 159 | + { |
| 160 | + writer.WritePropertyName(pair.Key); |
| 161 | + WriteObjectValue(writer, pair.Value, options); |
| 162 | + } |
| 163 | + writer.WriteEndObject(); |
| 164 | + break; |
| 165 | + case IEnumerable<object> objectEnumerable: |
| 166 | + writer.WriteStartArray(); |
| 167 | + foreach (object item in objectEnumerable) |
| 168 | + { |
| 169 | + WriteObjectValue(writer, item, options); |
| 170 | + } |
| 171 | + writer.WriteEndArray(); |
| 172 | + break; |
| 173 | + case null: |
| 174 | + case IUtf8JsonSerializable: |
| 175 | + case byte[]: |
| 176 | + case BinaryData: |
| 177 | + case JsonElement: |
| 178 | + case int: |
| 179 | + case decimal: |
| 180 | + case double: |
| 181 | + case float: |
| 182 | + case long: |
| 183 | + case string: |
| 184 | + case bool: |
| 185 | + case Guid: |
| 186 | + case DateTimeOffset: |
| 187 | + case DateTime: |
| 188 | + case TimeSpan: |
| 189 | + writer.WriteObjectValue(value!); |
| 190 | + break; |
| 191 | + |
| 192 | + default: |
| 193 | + throw new NotSupportedException("Not supported type " + value.GetType()); |
| 194 | + } |
| 195 | + } |
| 196 | + |
| 197 | + private static void SerializeExpression(Utf8JsonWriter writer, string value) |
| 198 | + { |
| 199 | + writer.WriteStartObject(); |
| 200 | + writer.WritePropertyName("type"); |
| 201 | + writer.WriteStringValue("Expression"); |
| 202 | + writer.WritePropertyName("value"); |
| 203 | + writer.WriteStringValue(value); |
| 204 | + writer.WriteEndObject(); |
| 205 | + } |
| 206 | + |
| 207 | + private static bool TryGetNonLiteral(JsonElement json, out DataFactoryElement<T?>? element) |
| 208 | + { |
| 209 | + element = null; |
| 210 | + if (json.ValueKind == JsonValueKind.Object && json.TryGetProperty("type", out JsonElement typeValue)) |
| 211 | + { |
| 212 | + if (typeValue.ValueEquals("Expression")) |
| 213 | + { |
| 214 | + if (json.EnumerateObject().Count() != 2) |
| 215 | + { |
| 216 | + // Expression should only have two properties: type and value |
| 217 | + return false; |
| 218 | + } |
| 219 | + var expressionValue = json.GetProperty("value").GetString(); |
| 220 | + element = new DataFactoryElement<T?>(expressionValue, DataFactoryElementKind.Expression); |
| 221 | + } |
| 222 | + else |
| 223 | + { |
| 224 | + element = DataFactoryElement<T>.FromSecretBase(DataFactorySecret.DeserializeDataFactorySecretBaseDefinition(json)!); |
| 225 | + } |
| 226 | + } |
| 227 | + |
| 228 | + return element != null; |
| 229 | + } |
| 230 | + |
| 231 | + private static DataFactoryElement<T> CreateLiteralElement(JsonElement json) |
| 232 | + { |
| 233 | + T? value = default; |
| 234 | + |
| 235 | + // Handle specific type conversions |
| 236 | + if (typeof(T) == typeof(IDictionary<string, string>) && json.ValueKind == JsonValueKind.Object) |
| 237 | + { |
| 238 | + var dictionary = new Dictionary<string, string>(); |
| 239 | + foreach (var item in json.EnumerateObject()) |
| 240 | + { |
| 241 | + dictionary.Add(item.Name, item.Value.GetString()!); |
| 242 | + } |
| 243 | + return new DataFactoryElement<T>((T)(object)dictionary); |
| 244 | + } |
| 245 | + |
| 246 | + if (typeof(T) == typeof(IDictionary<string, BinaryData>) && json.ValueKind == JsonValueKind.Object) |
| 247 | + { |
| 248 | + var dictionary = new Dictionary<string, BinaryData>(); |
| 249 | + foreach (var item in json.EnumerateObject()) |
| 250 | + { |
| 251 | + dictionary.Add(item.Name, BinaryData.FromString(item.Value.GetRawText())); |
| 252 | + } |
| 253 | + return new DataFactoryElement<T>((T)(object)dictionary); |
| 254 | + } |
| 255 | + |
| 256 | + if (typeof(T) == typeof(DateTimeOffset) || typeof(T) == typeof(DateTimeOffset?)) |
| 257 | + { |
| 258 | + return new DataFactoryElement<T>((T)(object)json.GetDateTimeOffset("O")); |
| 259 | + } |
| 260 | + |
| 261 | + if (typeof(T) == typeof(TimeSpan) || typeof(T) == typeof(TimeSpan?)) |
| 262 | + { |
| 263 | + return new DataFactoryElement<T>((T)(object)json.GetTimeSpan("c")); |
| 264 | + } |
| 265 | + |
| 266 | + if (typeof(T) == typeof(Uri)) |
| 267 | + { |
| 268 | + return new DataFactoryElement<T>((T)(object)new Uri(json.GetString()!)); |
| 269 | + } |
| 270 | + |
| 271 | + if (typeof(T) == typeof(BinaryData)) |
| 272 | + { |
| 273 | + return new DataFactoryElement<T>((T)(object)BinaryData.FromString(json.GetRawText()!)); |
| 274 | + } |
| 275 | + |
| 276 | + if (typeof(T).IsGenericType) |
| 277 | + { |
| 278 | + var methodInfo = GetGenericSerializationMethod(typeof(T).GenericTypeArguments[0]!, nameof(DataFactoryElementJsonConverter.DeserializeGenericList)); |
| 279 | + return (DataFactoryElement<T>)methodInfo!.Invoke(null, new object[] { json })!; |
| 280 | + } |
| 281 | + |
| 282 | + // Handle primitive and other types |
| 283 | + var obj = json.GetObject(); |
| 284 | + if (obj is not null) |
| 285 | + value = (T)obj; |
| 286 | + |
| 287 | + return new DataFactoryElement<T>(value); |
| 288 | + } |
| 289 | + |
| 290 | + private static MethodInfo GetGenericSerializationMethod(Type typeToConvert, string methodName) |
| 291 | + { |
| 292 | + return typeof(DataFactoryElementJsonConverter) |
| 293 | + .GetMethod( |
| 294 | + methodName, |
| 295 | + BindingFlags.Static | BindingFlags.NonPublic)! |
| 296 | + .MakeGenericMethod(typeToConvert); |
| 297 | + } |
| 298 | + } |
| 299 | +} |
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