/// <summary>
/// Set things in motion so your service can do its work.
/// </summary>
protected override void OnStart(string[] args)
{
// Event log trace
EventLogTraceListener traceListener = new EventLogTraceListener(SyslogServiceName);
// Add the event log trace listener to the collection.
Trace.Listeners.Add(traceListener);
if (ssSwitch.TraceInfo)
{
Trace.WriteLine(SyslogServiceName + " starting", DbTraceListener.catInfo);
}
try
{
// Initialize database
string connString = Properties.Settings.Default.DbConnection;
if (connString == null || connString.Length == 0)
{
throw new Exception("No database connection string specified");
}
// Connect to database - try a few times should database not be up yet
int tryCount = 3;
bool connected = false;
do
{
try
{
using (OleDbConnection conn = new OleDbConnection(connString))
{
conn.Open();
}
connected = true;
}
catch (Exception ex)
{
if (ssSwitch.TraceError)
{
Trace.WriteLine("Could not connect to database: " + ex.Message,
DbTraceListener.catError);
}
// Sleep for 5 seconds then try again
Thread.Sleep(5000);
tryCount--;
}
} while (!connected && (tryCount > 0));
if (!connected)
{
throw new Exception("Could not connect to database");
}
// Start database log
DatabaseLog.Instance.Initialize(connString);
// Load Configuration
SyslogConfiguration.Instance.Initialize(connString);
// Clear down messages periodically
_cleanup = new SyslogMessageCleanup(SyslogConfiguration.Instance.RetentionPeriod);
_cleanup.Initialize(connString);
// Create server channel
int serverPort = Properties.Settings.Default.ServerPort;
if (serverPort <= 0)
{
throw new Exception("Invalid server port specified in configuration file");
}
_channel = new HttpChannel(serverPort);
ChannelServices.RegisterChannel(_channel, false);
// Create shared object
_sharedData = new SharedData();
// Marshall object
_obj = RemotingServices.Marshal(_sharedData, "SyslogSharedData");
// Register for updates
SyslogConfiguration.Instance.ConfigurationChanged += new
Configuration.ConfigurationChangedDel(OnConfigurationChanged);
}
catch (Exception ex)
{
if (ssSwitch.TraceError)
{
Trace.WriteLine("Could not initialize: " + ex.Message,
DbTraceListener.catError);
}
// Fatal - stop right now
throw;
}
try
{
Connect();
}
catch (Exception ex)
{
if (ssSwitch.TraceError)
{
Trace.WriteLine(String.Format("Could not start to collect syslog messages on port {0}: {1}",
SyslogConfiguration.Instance.Port, ex.Message), DbTraceListener.catError);
}
// Not fatal - probably port is in use - so carry on regardless
// Hope for configuration
Disconnect();
}
}
/// <summary>
/// Set things in motion so your service can do its work.
/// </summary>
protected override void OnStart(string[] args)
{
// Event log trace
EventLogTraceListener traceListener = new EventLogTraceListener(SyslogServiceName);
// Add the event log trace listener to the collection.
Trace.Listeners.Add(traceListener);
if (ssSwitch.TraceInfo)
Trace.WriteLine(SyslogServiceName + " starting", DbTraceListener.catInfo);
try
{
// Initialize database
string connString = Properties.Settings.Default.DbConnection;
if (connString == null || connString.Length == 0)
throw new Exception("No database connection string specified");
// Connect to database - try a few times should database not be up yet
int tryCount = 3;
bool connected = false;
do
{
try
{
using (OleDbConnection conn = new OleDbConnection(connString))
{
conn.Open();
}
connected = true;
}
catch (Exception ex)
{
if (ssSwitch.TraceError)
Trace.WriteLine("Could not connect to database: " + ex.Message,
DbTraceListener.catError);
// Sleep for 5 seconds then try again
Thread.Sleep(5000);
tryCount--;
}
} while (!connected && (tryCount > 0));
if (!connected)
throw new Exception("Could not connect to database");
// Start database log
DatabaseLog.Instance.Initialize(connString);
// Load Configuration
SyslogConfiguration.Instance.Initialize(connString);
// Clear down messages periodically
_cleanup = new SyslogMessageCleanup(SyslogConfiguration.Instance.RetentionPeriod);
_cleanup.Initialize(connString);
// Create server channel
int serverPort = Properties.Settings.Default.ServerPort;
if (serverPort <= 0)
throw new Exception("Invalid server port specified in configuration file");
_channel = new HttpChannel(serverPort);
ChannelServices.RegisterChannel(_channel, false);
// Create shared object
_sharedData = new SharedData();
// Marshall object
_obj = RemotingServices.Marshal(_sharedData, "SyslogSharedData");
// Register for updates
SyslogConfiguration.Instance.ConfigurationChanged +=new
Configuration.ConfigurationChangedDel(OnConfigurationChanged);
}
catch (Exception ex)
{
if (ssSwitch.TraceError)
Trace.WriteLine("Could not initialize: " + ex.Message,
DbTraceListener.catError);
// Fatal - stop right now
throw;
}
try
{
Connect();
}
catch (Exception ex)
{
if (ssSwitch.TraceError)
Trace.WriteLine(String.Format("Could not start to collect syslog messages on port {0}: {1}",
SyslogConfiguration.Instance.Port, ex.Message), DbTraceListener.catError);
// Not fatal - probably port is in use - so carry on regardless
// Hope for configuration
Disconnect();
}
}
