LiteDB extensions for Microsoft.Extensions.DependencyInjection

Provides extension methods for registering and customizing a LiteDB.LiteDabase singleton instance using Microsoft.Extensions.DependencyInjection.

Installing via NuGet

Install-Package AleRoe.LiteDB.Extensions.DependencyInjection

Basic usage

//Register
services.AddLiteDatabase();

//Retrieve
var database = provider.GetRequiredService<LiteDatabase>()

This will register a singleton LiteDatabase instance using the connection string provided in your appsettings.json file under the ConnectionStrings:LiteDatabase key. The default registration requires that this key is present, otherwise a AgrumentNullException will be thrown. The LiteDatabase instance is configured using the default BsonMapper.Global settings and will use an ILogger instance for logging if configured.

Custom configuration

The LiteDB.ConnectionString, LiteDB.BsonMapper and the logger to be used can be customized by configuring the LiteDatabaseServiceOptions object:

services.AddLiteDatabase(configure =>
    {
        configure.ConnectionString.Filename = "MyDatabaseFile.db";
        configure.Mapper.EmptyStringToNull = false;
    });

Alternatively, you can use IConfigureOptions<LiteDatabaseServiceOptions> to configure your settings:

internal class ConfigureLiteDatabaseServiceOptions : IConfigureOptions<LiteDatabaseServiceOptions>
{
    public void Configure(LiteDatabaseServiceOptions options)
    {
        options.Mapper.EmptyStringToNull = false;
    }
}

//...
services.AddLiteDatabase();
services.ConfigureOptions<ConfigureLiteDatabaseServiceOptions>()

// Alternatively in one call
services.AddLiteDatabase<ConfigureLiteDatabaseServiceOptions>();

Configuring options can be called multiple times.

A note on Logging

LiteDB currently does really not support logging. If you pass an ILogger instance in LiteDatabaseServiceOptions or use the IServiceCollection.AddLogging() extension, then this will only be used to log an information message with the filename of the database.