OrmLiteValidationSource can not work well when using redisCache because of Json Deserialize

[1257960069]

public class ConfigureRedis : IHostingStartup
{
    public void Configure(IWebHostBuilder builder) => builder
        .ConfigureServices((context, services) => {
            services.AddSingleton(c => c.GetRequiredService<IRedisClientsManager>().GetCacheClient());
            services.AddSingleton<IRedisClientsManager>(new RedisManagerPool(context.Configuration.GetConnectionString("Redis")));
        })
        .ConfigureAppHost(appHost => {
            // Enable built-in Redis Admin UI at /admin-ui/redis
            // appHost.Plugins.Add(new AdminRedisFeature());
        });
}

public class ConfigureValidation : IHostingStartup
{
    // Add support for dynamically generated db rules
    public void Configure(IWebHostBuilder builder) => builder
        .ConfigureServices(services =>
        {
            services.AddSingleton<IValidationSource>(c =>
            {
                var cache = c.GetRequiredService<ICacheClient>();
                return new OrmLiteValidationSource(c.GetRequiredService<IDbConnectionFactory>(), cache, TimeSpan.FromMinutes(5));
            });
        })
        .ConfigureAppHost(appHost =>
        {
            appHost.Resolve<IValidationSource>().InitSchema();
        });
}

the fix a way is
JsConfig.AllowRuntimeType = _ => true;

isssue code

public class OrmLiteValidationSource : IValidationSource, IRequiresSchema, IValidationSourceAdmin, IClearable
{
    public IEnumerable<KeyValuePair<string, IValidateRule>> GetValidationRules(Type type)
    {
        if (Cache == null)
        {
            return GetDbValidationRules(type);
        }

        if (!CacheDuration.HasValue)
        {
            return Cache.GetOrCreate("IValidationSource." + type.Name, () => GetDbValidationRules(type));
        }

        return Cache.GetOrCreate("IValidationSource." + type.Name, CacheDuration.Value, () => GetDbValidationRules(type));
    }
 //issue: this return type not can DeserializeObject by default
    private IEnumerable<KeyValuePair<string, IValidateRule>> GetDbValidationRules(Type type)
    {
        using IDbConnection dbConn = OpenDbConnection();
        return dbConn.Select((ValidationRule x) => x.Type == type.Name && x.SuspendedDate == null).Map((ValidationRule x) => new KeyValuePair<string, IValidateRule>(x.Field, x));
    }

[mythz]

Use MemoryCacheClient or ServiceStackHost.DefaultCache instead:

services.AddSingleton<IValidationSource>(c => {
    var cache = c.GetRequiredService<MemoryCacheClient>();
    return new OrmLiteValidationSource(c.GetRequiredService<IDbConnectionFactory>(), cache, TimeSpan.FromMinutes(5));
});

[1257960069]

why not can use redis?

[mythz]

It's for locally cached validation rules that rarely change, I'd recommend avoiding the the unnecessary I/O.

[1257960069]

I suggest removing the construction parameter with ICacheClient cache=null

[mythz]

Then it would hit DB each time.

[1257960069]

What I mean is that internal memory caching is used, and custom caching is not allowed

[mythz]

Not in the habit of adding breaking changes that lose flexibility, users should be able to configure it with how they want.

OrmLiteValidationSource.cs is also a fairly simple class should you want to locally copy & modify.