private static IConfigurationBuilder AddConfigurationProviders(this IConfigurationBuilder builder, string environmentVariablePrefix, string configurationFile)
{
configurationFile = Path.GetFullPath(configurationFile);
var multiValuedArguments = typeof(Options)
.GetPropertiesRecursively()
.Where(p => p.PropertyType.IsArray)
.SelectMany(p =>
p.CustomAttributes
.Where(a => a.AttributeType == typeof(ArgumentAttribute))
.Select(a => new[] { a.ConstructorArguments[0].Value, a.ConstructorArguments[1].Value })
.SelectMany(v => v))
.Select(v => v.ToString())
.Where(v => v != "\u0000")
.ToArray();
return(builder
.AddDefaultValues(
targetType: typeof(Options))
.AddEnvironmentVariables(
targetType: typeof(Options),
prefix: environmentVariablePrefix)
.AddYamlFile(
path: Path.GetFileName(configurationFile),
targetType: typeof(Options),
optional: true,
reloadOnChange: true,
provider: new PhysicalFileProvider(Path.GetDirectoryName(configurationFile), ExclusionFilters.None)) // required for locations outside of the app directory
.AddCommandLine(
targetType: typeof(Options),
multiValuedArguments,
commandLine: Environment.CommandLine));
}
/// <summary>
/// Adds a default value configuration source to <paramref name="builder"/>.
/// </summary>
/// <param name="builder">The <see cref="IConfigurationBuilder"/> to which to add.</param>
/// <param name="targetType">The type from which to load default values.</param>
/// <returns>The updated <see cref="IConfigurationBuilder"/>.</returns>
public static IConfigurationBuilder AddDefaultValues(this IConfigurationBuilder builder, Type targetType)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (targetType == null)
{
throw new ArgumentNullException(nameof(targetType));
}
return(builder.AddDefaultValues(s =>
{
s.TargetType = targetType;
}));
}
private static IConfigurationBuilder AddConfigurationProviders(this IConfigurationBuilder builder, string environmentVariablePrefix, string configurationFile)
{
configurationFile = Path.GetFullPath(configurationFile);
return(builder
.AddDefaultValues(
targetType: typeof(Options))
.AddEnvironmentVariables(
targetType: typeof(Options),
prefix: environmentVariablePrefix)
.AddYamlFile(
path: Path.GetFileName(configurationFile),
optional: true,
reloadOnChange: false,
provider: new PhysicalFileProvider(Path.GetDirectoryName(configurationFile), ExclusionFilters.None)) // required for locations outside of the app directory
.AddCommandLine(
targetType: typeof(Options),
commandLine: Environment.CommandLine));
}
