Use System.Text.Json source generation (#72)

Author: flobernd

examples/Elastic.Ephemeral.Example/Elastic.Ephemeral.Example.csproj

@@ -13,7 +13,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Elastic.Transport" Version="0.10.1" />
+    <PackageReference Include="Elastic.Transport" Version="0.10.2" />
   </ItemGroup>
 
 </Project>

src/Elastic.Stack.ArtifactsApi/Resolvers/ApiResolver.cs

@@ -74,7 +74,7 @@ public static string LatestBuildHash(string version)
 			try
 			{
 				// if packages is empty it turns into an array[] otherwise its a dictionary :/
-				var packages = JsonSerializer.Deserialize<ArtifactsSearchResponse>(json).Packages;
+				var packages = JsonSerializer.Deserialize(json, ApiResolverSerializerContext.Default.ArtifactsSearchResponse).Packages;
 				if (packages.Count == 0)
 					throw new Exception("Can not get build hash for: " + version);
 				return GetBuildHash(packages.First().Value.DownloadUrl);
@@ -123,4 +123,8 @@ internal class SearchPackage
 		[JsonPropertyName("os")] public string[] OperatingSystem { get; set; }
 		[JsonPropertyName("classifier")] public string Classifier { get; set; }
 	}
+
+	[JsonSerializable(typeof(ArtifactsVersionsResponse))]
+	[JsonSerializable(typeof(ArtifactsSearchResponse))]
+	internal sealed partial class ApiResolverSerializerContext : JsonSerializerContext;
 }

src/Elastic.Stack.ArtifactsApi/Resolvers/SnapshotApiResolver.cs

@@ -45,7 +45,7 @@ public static bool TryResolve(Product product, Version version, OSPlatform os, s
 			{
 				var json = ApiResolver.FetchJson($"search/{version}/{query}");
 				// if packages is empty it turns into an array[] otherwise its a dictionary :/
-				packages = JsonSerializer.Deserialize<ArtifactsSearchResponse>(json).Packages;
+				packages = JsonSerializer.Deserialize(json, ApiResolverSerializerContext.Default.ArtifactsSearchResponse).Packages;
 			}
 			catch
 			{
@@ -82,7 +82,7 @@ public static bool TryResolve(Product product, Version version, OSPlatform os, s
 		private static IReadOnlyCollection<Version> LoadVersions()
 		{
 			var json = ApiResolver.FetchJson("versions");
-			var versions = JsonSerializer.Deserialize<ArtifactsVersionsResponse>(json).Versions;
+			var versions = JsonSerializer.Deserialize(json, ApiResolverSerializerContext.Default.ArtifactsVersionsResponse).Versions;
 
 			return new List<Version>(versions.Select(v => new Version(v)));
 		}