/// <summary>Add <see cref="FeatureFlagsSettings"/> to the DI container. The two
/// connection strings are hardcoded as "featureFlags" and "featureFlagsInitialization".
/// </summary>
/// <param name="services"><see cref="IServiceCollection"/></param>
/// <param name="configuration"><see cref="IConfiguration"/></param>
/// <param name="featureFlagAssemblies">A list of assemblies to scan for classes inheriting from
/// <see cref="Feature"/>.</param>
/// <param name="connectionString">Connection string for SELECT/INSERT/DELETE operations.</param>
/// <param name="initializationConnectionString">Connection string for the CREATE TABLE operation.</param>
/// <param name="sqlSessionManagerSettings">Optional <see cref="SqlSessionManagerSettings"/></param>
/// <returns><see cref="IServiceCollection"/></returns>
/// <exception cref="Exception">When the connection strings are missing/empty.</exception>
public static IServiceCollection AddFeatureFlagSettings(
this IServiceCollection services,
IConfiguration configuration,
IEnumerable <Assembly> featureFlagAssemblies,
string connectionString,
string initializationConnectionString,
SqlSessionManagerSettings sqlSessionManagerSettings = null
)
{
services.TryAddSingleton(serviceProvider =>
{
if (string.IsNullOrEmpty(connectionString))
{
throw new ArgumentNullException(nameof(connectionString));
}
if (string.IsNullOrEmpty(initializationConnectionString))
{
throw new ArgumentNullException(nameof(initializationConnectionString));
}
sqlSessionManagerSettings = sqlSessionManagerSettings
?? new SQLServerSessionManagerSettings
{
FeatureSchemaName = "dbo",
FeatureTableName = "RimDevAspNetCoreFeatureFlags",
FeatureNameColumn = "FeatureName",
FeatureValueColumn = "Enabled",
ConnectionString = connectionString,
EnableSetValueCommand = false,
};
if (string.IsNullOrEmpty(sqlSessionManagerSettings.ConnectionString))
{
sqlSessionManagerSettings.ConnectionString = connectionString;
}
return(new FeatureFlagsSettings(featureFlagAssemblies)
{
ConnectionString = connectionString,
InitializationConnectionString = initializationConnectionString,
SqlSessionManagerSettings = sqlSessionManagerSettings,
});
});
return(services);
}
/// <summary><para>Register RimDev Feature Flags in the dependency system.</para>
/// <para>The <see cref="IFeatureManagerSnapshot"/> implementation must be registered in order to
/// construct individual <see cref="Feature"/> instances.</para>
/// </summary>
/// <param name="services"><see cref="IServiceCollection"/></param>
/// <param name="configuration"><see cref="IConfiguration"/></param>
/// <param name="featureFlagAssemblies">A list of assemblies to scan for classes inheriting from
/// <see cref="Feature"/>.</param>
/// <param name="connectionString">Connection string for SELECT/INSERT/DELETE operations.</param>
/// <param name="initializationConnectionString">Connection string for the CREATE TABLE operation.</param>
/// <param name="sqlSessionManagerSettings">Optional <see cref="SqlSessionManagerSettings"/></param>
/// <returns><see cref="IServiceCollection"/></returns>
/// <exception cref="Exception">When the connection strings are missing/empty.</exception>
public static IServiceCollection AddRimDevFeatureFlags(
this IServiceCollection services,
IConfiguration configuration,
ICollection <Assembly> featureFlagAssemblies,
string connectionString,
string initializationConnectionString,
SqlSessionManagerSettings sqlSessionManagerSettings = null
)
{
services.AddFeatureFlagSettings(
configuration,
featureFlagAssemblies: featureFlagAssemblies,
connectionString: connectionString,
initializationConnectionString: initializationConnectionString,
sqlSessionManagerSettings: sqlSessionManagerSettings
);
services.AddStronglyTypedFeatureFlags(
featureFlagAssemblies: featureFlagAssemblies
);
services.AddFeatureFlagsSessionManager();
return(services);
}
