Custom orleans2.0 of advanced persistent storage Tutorial

Next Dian a simple directory structure and project dependencies as

Dian two main core custom code

1. Add custom implementation class CustomProvider

public class CustomProvider : IGrainStorage
    {
        public Task ClearStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
        {
            throw new NotImplementedException();
        }

        public Task ReadStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
        {
            if(grainType== "Grain.UserGrain")
            {
                var id = grainReference.GetPrimaryKeyLong();

                //模拟从数据库读出User
                var user = new UserState()
                {
                    MobilePhone = "124214214",
                    Name = "李四"
                };

                grainState.State = user;

            }
            return Task.CompletedTask;
        }

        public Task WriteStateAsync(string grainType, GrainReference grainReference, IGrainState grainState)
        {

            if (grainType== "Grain.UserGrain")
            {
                var id =grainReference.GetPrimaryKeyLong (); 

                // analog save the database 


            } 
            return Task.CompletedTask; 
        } 
    }

2. In place of the default implementation injected silo

 .ConfigureServices(services =>
                   {
                       var providerName = "CustomProvider";
                       services.TryAddSingleton(sp =>
                           sp.GetServiceByName<IGrainStorage>(ProviderConstants.DEFAULT_STORAGE_PROVIDER_NAME));

                       services.AddSingletonNamedService<IGrainStorage, CustomProvider>(providerName);
                   })

3. Enable on grain class

 [StorageProvider(ProviderName = "CustomProvider")]

 

Two Dian results are as follows

 

 

Download sample code: SimpleStorage