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

Question

How to exclude column in xml config file ?

I want to do this serilogColumnOptions.Store.Remove(StandardColumn.Properties); event in config file

Answer 1

Seems like it's not possible to remove Serilog columns through XML configuration.

I have found several confirmations of this statement: here and here .

You could also verify this by examining source code for SQL Server Sink:

MSSqlServer() extension method checks for MSSqlServerSettingsSection section for configuring columns like described in documentation .

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);
}

If you then examine GenerateDataColumnsFromConfig() method you'll see that all configured columns are just added to AdditionalDataColumns collection of ColumnOptions . But there is no any code for removing columns from Store collection.

If it's a must for your application to have file configuration for Serilog and have possibility to remove some columns, you could add simple replacement for Serilog configuration from file. Here is a sample implementation for such configuration:

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();

Here is appSettings section:

  <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>

Hope this will help you.