serilog-sinks-mssqlserver：排除 xml 配置文件中的列

Question

如何排除 xml 配置文件中的列？

我想做这个 serilogColumnOptions.Store.Remove(StandardColumn.Properties); 配置文件中的事件

Answer 1

似乎无法通过 XML 配置删除 Serilog 列。

我找到了这个说法的几个确认：这里和这里。

您还可以通过检查SQL Server Sink 的源代码来验证这一点：

MSSqlServer()扩展方法检查MSSqlServerSettingsSection配置列的部分，如文档中所述。

MSSqlServerConfigurationSection serviceConfigSection =
    ConfigurationManager.GetSection("MSSqlServerSettingsSection") as MSSqlServerConfigurationSection;

// If we have additional columns from config, load them as well
if (serviceConfigSection != null && serviceConfigSection.Columns.Count > 0)
{
    if (columnOptions == null)
    {
        columnOptions = new ColumnOptions();
    }
    GenerateDataColumnsFromConfig(serviceConfigSection, columnOptions);
}

如果您随后检查GenerateDataColumnsFromConfig()方法，您将看到所有配置的列都刚刚添加到AdditionalDataColumns的集合中ColumnOptions。但是没有任何代码可以从Store集合中删除列。

如果您的应用程序必须具有 Serilog 的文件配置，并且可以删除某些列，那么您可以从文件中添加简单的 Serilog 配置替换。以下是此类配置的示例实现：

var connectionString = ConfigurationManager.AppSettings["serilog:write-to:MSSqlServer.connectionString"];
var tableName = ConfigurationManager.AppSettings["serilog:write-to:MSSqlServer.tableName"];
var autoCreateSqlTable = Convert.ToBoolean(ConfigurationManager.AppSettings["serilog:write-to:MSSqlServer.autoCreateSqlTable"]);
var excludedColumns = ConfigurationManager.AppSettings["serilog:write-to:MSSqlServer.excludedColumns"];

ColumnOptions columnOptions = new ColumnOptions();
foreach (var excludedColumn in Regex.Split(excludedColumns, ",\\s*"))
{
    columnOptions.Store.Remove((StandardColumn)Enum.Parse(typeof(StandardColumn), excludedColumn, true));
}

Logger log = new LoggerConfiguration()
    .WriteTo.MSSqlServer(connectionString, tableName, columnOptions: columnOptions, autoCreateSqlTable: autoCreateSqlTable)
    .CreateLogger();

这是appSettings部分：

  <appSettings>
    <add key="serilog:using:MSSqlSever" value="Serilog.Sinks.MSSqlServer" />
    <add key="serilog:write-to:MSSqlServer.connectionString" value="Server=.;Database=LoggingDB;Trusted_Connection=True;"/>
    <add key="serilog:write-to:MSSqlServer.tableName" value="Logs"/>
    <add key="serilog:write-to:MSSqlServer.autoCreateSqlTable" value="true"/>
    <add key="serilog:write-to:MSSqlServer.excludedColumns" value="Properties, TimeStamp"/>
  </appSettings>

希望对你有帮助。