protected virtual IConfigurationRoot LoadAppConfiguration(Xml.AppInfo appInfo, PathMap appPathMap)
{
var builder = new ConfigurationBuilder();
foreach (var configuration in appInfo.ConfigurationFiles)
{
if (configuration.Environment != null && !configuration.Environment.Equals(this.EnvName, StringComparison.OrdinalIgnoreCase))
{
continue;
}
if (configuration is ConfigurationEnvironmentVariablesElement environmentVariablesConfiguration)
{
builder.Add(new EnvironmentVariablesConfigurationSource()
{
Prefix = environmentVariablesConfiguration.Prefix,
});
}
else if (configuration is ConfigurationFileElement fileConfiguration)
{
var loaded = false;
foreach (var configPath in appPathMap.Compile(fileConfiguration.Path))
{
if (File.Exists(configPath))
{
try
{
FileConfigurationSource source;
switch (fileConfiguration.Type)
{
case "ini": source = new IniConfigurationSource(); break;
case "xml": source = new XmlConfigurationSource(); break;
case "json": source = new JsonConfigurationSource(); break;
default: throw new Exception("Unknown configuration type.");
}
source.FileProvider = new PhysicalFileProvider(Path.GetDirectoryName(configPath));
source.Path = Path.GetFileName(configPath);
source.ReloadOnChange = fileConfiguration.ReloadOnChange;
builder.Add(source);
}
catch (Exception exception)
{
throw new Exception($"Can not read configuration file \"{configPath}\": {exception.Message}", exception);
}
loaded = true;
break;
}
}
if (!fileConfiguration.Optional && !loaded)
{
throw new Exception($"Can not find required configuration file \"{fileConfiguration.Path}\".");
}
}
}
return(builder.Build());
}
