serilog-sinks-mssqlserver：在xml配置文件中排除列

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。

我已经找到了这个声明的几个确认：here和here。

您还可以通过检查SQL Server Sink的source code来验证这一点：

MSSqlServer()扩展方法检查MSSqlServerSettingsSection部分，以配置documentation中描述的列。

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);
}

如果你然后检查GenerateDataColumnsFromConfig()方法，你会看到所有配置的列都被添加到AdditionalDataColumns的ColumnOptions集合中。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Seri​​log的文件配置并且可以删除某些列，则可以从文件中添加简单替换Serilog配置。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>

希望这会帮助你。