public static IServiceCollection AddTransacto(this IServiceCollection services, params IPlugin[] plugins) =>
plugins.Concat(Standard.Plugins).Aggregate(services
.AddRouting()
.AddSingleton(MessageTypeMapper.Create(Array.ConvertAll(plugins,
plugin => new MessageTypeMapper(plugin.MessageTypes))))
// projections
.AddSingleton <Func <IPlugin, NpgsqlConnection> >(provider => {
var cache = new ConcurrentDictionary <string, NpgsqlConnectionStringBuilder>();
return(plugin => new NpgsqlConnection(cache.GetOrAdd(plugin.Name, username =>
new NpgsqlConnectionStringBuilder(
provider.GetRequiredService <NpgsqlConnectionStringBuilder>().ConnectionString)
{
Username = username
}).ConnectionString));
}),
(services, plugin) => {
var rootProvider = services.BuildServiceProvider();
var pluginServices = new ServiceCollection();
plugin.ConfigureServices(pluginServices);
var pluginProvider = pluginServices
.AddSingleton(rootProvider.GetRequiredService <EventStoreClient>())
.AddSingleton(rootProvider.GetRequiredService <IStreamStore>())
.AddSingleton(rootProvider.GetRequiredService <IMessageTypeMapper>())
.AddSingleton <InMemoryProjectionDatabase>()
.AddHostedService(provider => new InMemoryProjectionHost(
provider.GetRequiredService <EventStoreClient>(),
provider.GetRequiredService <IMessageTypeMapper>(),
provider.GetRequiredService <InMemoryProjectionDatabase>(),
provider.GetServices <ProjectionHandler <InMemoryProjectionDatabase>[]>().ToArray()))
.AddSingleton <Func <NpgsqlConnection> >(_ => () => rootProvider
.GetRequiredService <Func <IPlugin, NpgsqlConnection> >()
.Invoke(plugin))
.AddHostedService(provider => new NpgsqlProjectionHost(
provider.GetRequiredService <EventStoreClient>(),
provider.GetRequiredService <IMessageTypeMapper>(),
provider.GetRequiredService <Func <NpgsqlConnection> >(),
provider.GetServices <NpgsqlProjection>().ToArray()))
.AddHostedService(provider => new StreamStoreProjectionHost(
provider.GetRequiredService <EventStoreClient>(),
provider.GetRequiredService <IMessageTypeMapper>(),
provider.GetRequiredService <IStreamStore>(),
provider.GetServices <StreamStoreProjection>().ToArray()))
.BuildServiceProvider();
return(pluginProvider
.GetServices <IHostedService>()
.Aggregate(services.AddSingleton(Tuple.Create(plugin, (IServiceProvider)pluginProvider)),
(services, service) => services.AddSingleton(service)));
});
public static IServiceCollection AddTransacto(this IServiceCollection services, params IPlugin[] plugins) =>
plugins.Concat(Standard.Plugins).Aggregate(services
.AddRouting()
.AddSingleton(MessageTypeMapper.Create(Array.ConvertAll(plugins,
plugin => new MessageTypeMapper(plugin.MessageTypes))))
// write model
.AddSingleton <CommandHandlerModule>(provider => new GeneralLedgerEntryModule(
provider.GetRequiredService <EventStoreClient>(),
provider.GetRequiredService <IMessageTypeMapper>(),
TransactoSerializerOptions.Events,
provider.GetRequiredService <ICommandContext>()))
.AddSingleton <CommandHandlerModule>(provider => new ChartOfAccountsModule(
provider.GetRequiredService <EventStoreClient>(),
provider.GetRequiredService <IMessageTypeMapper>(),
TransactoSerializerOptions.Events))
.AddSingleton <CommandHandlerModule>(provider => new GeneralLedgerModule(
provider.GetRequiredService <EventStoreClient>(),
provider.GetRequiredService <IMessageTypeMapper>(),
TransactoSerializerOptions.Events))
// projections
.AddSingleton <Func <IPlugin, NpgsqlConnection> >(provider => {
var cache = new ConcurrentDictionary <string, NpgsqlConnectionStringBuilder>();
return(plugin => new NpgsqlConnection(cache.GetOrAdd(plugin.Name, username =>
new NpgsqlConnectionStringBuilder(
provider.GetRequiredService <NpgsqlConnectionStringBuilder>().ConnectionString)
{
Username = username
}).ConnectionString));
})
.AddSingleton <Func <IPlugin, InMemoryReadModel> >(provider => {
var cache = new ConcurrentDictionary <string, InMemoryReadModel>();
return(plugin => cache.GetOrAdd(plugin.Name, _ => new InMemoryReadModel()));
})
.AddHttpContextAccessor()
.AddSingleton <ICommandContext, HttpContextCommandContext>(),
(services, plugin) => {
var rootProvider = services.BuildServiceProvider();
var pluginServices = new ServiceCollection();
plugin.ConfigureServices(pluginServices);
var pluginProvider = pluginServices
.AddSingleton(rootProvider.GetRequiredService <EventStoreClient>())
.AddSingleton(rootProvider.GetRequiredService <IStreamStore>())
.AddSingleton(rootProvider.GetRequiredService <IMessageTypeMapper>())
.AddSingleton(provider => rootProvider
.GetRequiredService <Func <IPlugin, InMemoryReadModel> >().Invoke(plugin))
.AddHostedService(provider => new InMemoryProjectionHost(
provider.GetRequiredService <EventStoreClient>(),
provider.GetRequiredService <IMessageTypeMapper>(),
provider.GetRequiredService <InMemoryReadModel>(),
provider.GetServices <ProjectionHandler <InMemoryReadModel>[]>().ToArray()))
.AddSingleton <Func <NpgsqlConnection> >(provider => () => rootProvider
.GetRequiredService <Func <IPlugin, NpgsqlConnection> >()
.Invoke(plugin))
.AddHostedService(provider => new NpgSqlProjectionHost(
provider.GetRequiredService <EventStoreClient>(),
provider.GetRequiredService <IMessageTypeMapper>(),
provider.GetRequiredService <Func <NpgsqlConnection> >(),
provider.GetServices <NpgsqlProjection>().ToArray()))
.AddHostedService(provider => new StreamStoreProjectionHost(
provider.GetRequiredService <EventStoreClient>(),
provider.GetRequiredService <IMessageTypeMapper>(),
provider.GetRequiredService <IStreamStore>(),
provider.GetServices <StreamStoreProjection>().ToArray()))
.BuildServiceProvider();
return(pluginProvider
.GetServices <IHostedService>()
.Aggregate(services.AddSingleton(Tuple.Create(plugin, (IServiceProvider)pluginProvider)),
(services, service) => services.AddSingleton(service)));
});