private static SyslogNet.Client.SyslogMessage CreateSyslogMessage(
SyslogNet.Client.SyslogOptions options
, string message)
{
// https://www.syslog-ng.com/technical-documents/doc/syslog-ng-open-source-edition/3.16/administration-guide/option-description-log-msg-size
// Description: Maximum length of a message in bytes.
// This length includes the entire message
// (the data structure and individual fields).
// The maximal value that can be set is 268435456 bytes(256MB).
// For messages using the IETF-syslog message format(RFC5424),
// the maximal size of the value of an SDATA field is 64kB.
// In most cases, it is not recommended to set log-msg-size()
// higher than 10 MiB.
// https://stackoverflow.com/questions/3310875/find-syslog-max-message-length
// Keep in mind syslog is a protocol,
// which means it sets minimums and makes recommendations.
// I can't find a source to this, but I believe
// the minimum length that should be supported is 1k,
// with 64k being recommended.
System.Collections.Generic.Dictionary <string, string> sd = new System.Collections.Generic.Dictionary <string, string>(System.StringComparer.InvariantCultureIgnoreCase);
sd["Hello"] = "World";
sd["Привет"] = "мир";
sd["你好"] = "世界";
sd["nixda"] = "[]";
sd["foo[]bar"] = "{}";
SyslogNet.Client.StructuredDataElement sde = new SyslogNet.Client.StructuredDataElement("sdld", sd);
// Each implementation is free to do what they want,
// i.e. if you wanted a 16MB maximum and were writing
// a syslog server, you're free to do that.
// I'm not sure why you would, but you could.
// As far as I know, there is no standard programatic way
// of ascertaining this, so keeping messages at
// just under 1k would be ideal for portability.
return(new SyslogNet.Client.SyslogMessage(
System.DateTimeOffset.Now,
SyslogNet.Client.Facility.UserLevelMessages,
SyslogNet.Client.Severity.Error,
options.LocalHostName,
options.AppName,
options.ProcId,
options.MsgType,
message ?? (options.Message ??
"Test message at "
+ System.DateTime.UtcNow.ToString("dddd, dd.MM.yyyy HH:mm:ss.fff", System.Globalization.CultureInfo.InvariantCulture))
, sde
));
} // End Function CreateSyslogMessage
private SyslogNet.Client.SyslogMessage BuildSyslogMessage(LogEvent logEvent)
{
var formattedMessage = this.GetFormattedMessage(logEvent);
var severity = GetSyslogSeverity(logEvent.Level);
DateTimeOffset dtOffset = new DateTimeOffset(DateTime.Now.ToUniversalTime());
var facility = SyslogNet.Client.Facility.LocalUse1;
string procId = System.Diagnostics.Process.GetCurrentProcess().Id.ToString();
string msgId = null;
string hostName = Dns.GetHostName();
Dictionary <string, string> properties = new Dictionary <string, string>();
foreach (var property in logEvent.Properties)
{
properties.Add(property.Key, property.Value.ToString());
}
SyslogNet.Client.StructuredDataElement sdElement = new SyslogNet.Client.StructuredDataElement("1", properties);
SyslogNet.Client.SyslogMessage message = new SyslogNet.Client.SyslogMessage(dtOffset, facility, severity, hostName, this.AppName, procId, msgId, formattedMessage, sdElement);
return(message);
}
