EFCacheKeyProvider fails to serialize parameter value of type IPAddress

[villanibr]

Summary of the issue

The EFCacheKeyProvider class has a line (119) inside the getParameterValue method where it serializes to JSON the parameter value of a DbCommand. It causes an exception if the parameter value is of type IPAddress. Some database providers (like npgsql) allows to map to and from IPAddress class and inet database data type. So it is in fact possible that some parameter values will be of type IPAddress.

It is known that using System.Text.Json.JsonSerializer to serialize IPAddress results in an error. A custom JsonConverter needs to be configured via JsonSerializerOptions. However, there is no way to specify global serialization options for System.Text.Json.JsonSerializer (Json.Net in turn has a way).

Right now, the only workaround is to copy the source code of EFCacheKeyProvider, create another IEFCacheKeyProvider that use specific JsonSerializerOptions inside getParameterValue method. Its not ideal.

Suggestions for a fix or better workaround:

• Allow to specify a custom JsonSerializerOptions, somehow
• Allow to specify a custom Json Serializer (System.Text, Json.NET...)
• A way to ignore queries that contain IPAddress
• Make it possible to inherit from EFCacheKeyProvider by changing getParameterValue to non-static virtual, so there is no need to copy/replicate the class entire code
• Use Json.Net (requires an additional dependency, which is not ideal)

Thanks, amazing package by the way.

Environment

.NET (Core) SDK version: .NET 8
Microsoft.EntityFrameworkCore version: 8.0.5
EFCoreSecondLevelCacheInterceptor version: 4.4.3
Database: (e.g. SQL Server, SQLite, etc.): PostgreSQL (irrelevant)
Cache provider: (e.g. in-memory, redis, etc.): in-memory (irrelevant)

Example code/Steps to reproduce:

        var ip = IPAddress.Loopback;
        var jsonString = System.Text.Json.JsonSerializer.Serialize(ip);

Output:

Exception message: The attempted operation is not supported for the type of object referenced.
Full Stack trace:   
 at System.Net.IPAddress.get_ScopeId()
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.GetMemberAndWriteJson(Object obj, WriteStack& state, Utf8JsonWriter writer)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryWrite(Utf8JsonWriter writer, T value, JsonSerializerOptions options, WriteStack& state)
   at System.Text.Json.Serialization.JsonConverter`1.TryWrite(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state)
   at System.Text.Json.Serialization.JsonConverter`1.WriteCore(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state)
   at System.Text.Json.JsonSerializer.WriteUsingSerializer[TValue](Utf8JsonWriter writer, TValue& value, JsonTypeInfo jsonTypeInfo)
   at System.Text.Json.JsonSerializer.WriteStringUsingSerializer[TValue](TValue& value, JsonTypeInfo jsonTypeInfo)
   at System.Text.Json.JsonSerializer.Serialize[TValue](TValue value, JsonSerializerOptions options)
   at TestConsole.Program.TestIpSerialization() in D:\Source\Repos\TestConsole\Program.cs:line 2264
   at TestConsole.Program.Main(String[] args) in D:\Source\Repos\TestConsole\Program.cs:line 2286