public async Task Should_send_logs_to_udp_syslog_service()
{
var syslogFormatter = new Rfc3164Formatter(Facility.Local0, "TestApp");
var sink = new SyslogUdpSink(this.endpoint, syslogFormatter, this.batchConfig);
var log = GetLogger(sink);
var receiver = new UdpSyslogReceiver();
receiver.MessageReceived += (_, msg) =>
{
this.messagesReceived.Add(msg);
this.countdown.Signal();
};
var receiveTask = receiver.StartReceiving(this.endpoint, this.cts.Token);
log.Information("This is test message 1");
log.Warning("This is test message 2");
log.Error("This is test message 3");
await this.countdown.WaitAsync(20000, this.cts.Token);
this.messagesReceived.Count.ShouldBe(3);
this.messagesReceived.ShouldContain(x => x.StartsWith("<134>"));
this.messagesReceived.ShouldContain(x => x.StartsWith("<132>"));
this.messagesReceived.ShouldContain(x => x.StartsWith("<131>"));
sink.Dispose();
this.cts.Cancel();
await receiveTask;
}
private async Task Should_send_logs_to_udp_syslog_service(IPEndPoint endpoint)
{
var syslogFormatter = new Rfc3164Formatter(Facility.Local0, "TestApp");
var sink = new SyslogUdpSink(endpoint, syslogFormatter);
// Start a simple UDP syslog server that will capture all received messaged
var receiver = new UdpSyslogReceiver();
receiver.MessageReceived += (_, msg) =>
{
this.messagesReceived.Add(msg);
this.countdown.Signal();
};
var receiveTask = receiver.StartReceiving(endpoint, this.cts.Token);
// Generate and send 3 log events
var logEvents = Some.LogEvents(3);
await sink.EmitBatchAsync(logEvents);
// Wait until the server has received all the messages we sent, or the timeout expires
await this.countdown.WaitAsync(4000, this.cts.Token);
// The server should have received all 3 messages sent by the sink
this.messagesReceived.Count.ShouldBe(logEvents.Length);
this.messagesReceived.ShouldAllBe(x => logEvents.Any(e => x.EndsWith(e.MessageTemplate.Text)));
sink.Dispose();
this.cts.Cancel();
await receiveTask;
}
private async Task SendUdpAsync(IPAddress address)
{
// Start a simple UDP syslog server that will capture all received messaged
var receiver = new UdpSyslogReceiver(this.cts.Token);
receiver.MessageReceived += (_, msg) =>
{
this.messagesReceived.Add(msg);
this.countdown.Signal();
};
var syslogFormatter = new Rfc3164Formatter(Facility.Local0, "TestApp");
var ipEndPoint = new IPEndPoint(address, receiver.ListeningIPEndPoint.Port);
var sink = new SyslogUdpSink(ipEndPoint, syslogFormatter);
// Generate and send 3 log events
var logEvents = Some.LogEvents(NumberOfEventsToSend);
await sink.EmitBatchAsync(logEvents);
// Wait until the server has received all the messages we sent, or the timeout expires
await this.countdown.WaitAsync(TimeoutInSeconds, this.cts.Token);
// The server should have received all 3 messages sent by the sink
this.messagesReceived.Count.ShouldBe(logEvents.Length);
this.messagesReceived.ShouldAllBe(x => logEvents.Any(e => x.EndsWith(e.MessageTemplate.Text)));
sink.Dispose();
this.cts.Cancel();
}
/// <summary>
/// Adds a sink that writes log events to a UDP syslog server
/// </summary>
/// <param name="loggerSinkConfig">The logger configuration</param>
/// <param name="host">Hostname of the syslog server</param>
/// <param name="port">Port the syslog server is listening on</param>
/// <param name="appName">The name of the application. Defaults to the current process name</param>
/// <param name="format">The syslog message format to be used</param>
/// <param name="facility">The category of the application</param>
/// <param name="outputTemplate">A message template describing the output messages
/// <seealso cref="https://github.com/serilog/serilog/wiki/Formatting-Output"/>
/// </param>
public static LoggerConfiguration UdpSyslog(this LoggerSinkConfiguration loggerSinkConfig,
string host, int port = 514, string appName = null, SyslogFormat format = SyslogFormat.RFC3164,
Facility facility = Facility.Local0, string outputTemplate = null)
{
if (String.IsNullOrWhiteSpace(host))
{
throw new ArgumentException(nameof(host));
}
var formatter = GetFormatter(format, appName, facility, outputTemplate);
var endpoint = ResolveIP(host, port);
var sink = new SyslogUdpSink(endpoint, formatter, BatchConfig.Default);
return(loggerSinkConfig.Sink(sink));
}
