/// <summary>
/// Initializes a new instance of the <see cref="AuditLogSyslogWriter" /> class.
/// </summary>
/// <param name="syslogMessageWriter">The syslog message writer.</param>
/// <exception cref="System.ArgumentNullException">syslogMessageWriter</exception>
public AuditLogSyslogWriter(ISyslogMessageWriter syslogMessageWriter)
{
if (syslogMessageWriter == null)
{
throw new ArgumentNullException(nameof(syslogMessageWriter));
}
_syslogMessageWriter = syslogMessageWriter;
SyslogConfiguration syslogConfiguration = ConfigurationSettings.GetSyslogConfigurationSection();
if (syslogConfiguration?.SyslogApplicationSettings != null)
{
_enterpriseId = syslogConfiguration.SyslogApplicationSettings.EnterpriseId;
_applicationName = syslogConfiguration.SyslogApplicationSettings.ApplicationName;
}
// Fallback
if (_enterpriseId == 0)
{
_enterpriseId = SyslogReadiNowConstants.EnterpriseId;
}
if (string.IsNullOrEmpty(_applicationName))
{
_applicationName = SyslogReadiNowConstants.ApplicationName;
}
_databaseName = string.Empty;
_databaseServer = string.Empty;
var databaseConfiguration = ConfigurationSettings.GetDatabaseConfigurationSection();
if (databaseConfiguration?.ConnectionSettings != null)
{
_databaseName = databaseConfiguration.ConnectionSettings.Database;
_databaseServer = databaseConfiguration.ConnectionSettings.Server;
}
_processName = Process.GetCurrentProcess().MainModule.ModuleName;
_hostName = GetHostName();
try
{
_ipHostEntry = Dns.GetHostEntry(Dns.GetHostName());
}
catch
{
// ignored
}
if (!string.IsNullOrEmpty(SystemInfo.InstallFolder))
{
_installFolder = SystemInfo.InstallFolder.Replace("\\", "/");
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="syslogWriter">The syslog writer.</param>
public EventLogSyslogWriter(ISyslogMessageWriter syslogWriter)
{
if (syslogWriter == null)
{
throw new ArgumentNullException(nameof(syslogWriter));
}
_syslogWriter = syslogWriter;
try
{
_ipHostEntry = Dns.GetHostEntry(Dns.GetHostName());
}
catch
{
// ignored
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SyslogQueueingMessageWriter" /> class.
/// </summary>
/// <param name="messageWriter">The message writer.</param>
/// <param name="maxRetries">The maximum retries.</param>
/// <exception cref="System.ArgumentNullException">messageSender</exception>
public SyslogQueueingMessageWriter(ISyslogMessageWriter messageWriter, int maxRetries = MaxRetries)
{
if (messageWriter == null)
{
throw new ArgumentNullException(nameof(messageWriter));
}
_messageWriter = messageWriter;
_maxRetries = maxRetries;
if (_maxRetries > MaxRetries)
{
_maxRetries = MaxRetries;
}
CancellationToken cancellationToken = _cancellationTokenSource.Token;
// Start listening for messages
_msgWriterTask = Task.Run(() =>
{
try
{
foreach (SyslogMessage message in _messageQueue.GetConsumingEnumerable(cancellationToken))
{
WriteWithRetry(message);
if (cancellationToken.IsCancellationRequested)
{
break;
}
}
}
catch (Exception ex)
{
_canWriteMessages = false;
Trace.TraceError("An unexpected error occurred in the syslog message writer worker thread. No more messages will be written to the syslog server. Error:{0}.", ex);
}
}, _cancellationTokenSource.Token);
// Register an action with the application exist rendezvous point so that any messages will be flushed.
RendezvousPoint.RegisterAction(WellKnownRendezvousPoints.ApplicationExit, () => Dispose(true));
}
