public void FlightRecorder_PassThru_SysLogProvider()
{
// Verify that the ISysLogProvider implementation works.
Queue <FlightEvent> queue = new Queue <FlightEvent>();
ISysLogProvider orgProvider = SysLog.LogProvider;
try
{
FlightEvent flightEvent;
using (var recorder = new FlightRecorder(evt => queue.Enqueue(evt)))
{
SysLog.LogProvider = recorder;
SysLog.LogError("Test Error");
SysLog.LogWarning("Test Warning");
SysLog.LogInformation("Test Information");
SysLog.Flush();
Assert.AreEqual(3, queue.Count);
flightEvent = queue.Dequeue();
Assert.AreEqual("SysLog:Error", flightEvent.Operation);
Assert.IsTrue(flightEvent.Details.Contains("Test Error"));
Assert.IsTrue(flightEvent.IsError);
flightEvent = queue.Dequeue();
Assert.AreEqual("SysLog:Warning", flightEvent.Operation);
Assert.IsTrue(flightEvent.Details.Contains("Test Warning"));
Assert.IsFalse(flightEvent.IsError);
flightEvent = queue.Dequeue();
Assert.AreEqual("SysLog:Information", flightEvent.Operation);
Assert.IsTrue(flightEvent.Details.Contains("Test Information"));
Assert.IsFalse(flightEvent.IsError);
// Verify that system events actually serialize exception
// and stack trace related information.
try
{
throw new AssertException();
}
catch (Exception e)
{
SysLog.LogException(e);
SysLog.Flush();
flightEvent = queue.Dequeue();
Assert.AreEqual("SysLog:Exception", flightEvent.Operation);
Assert.IsTrue(flightEvent.Details.Contains("AssertException"));
}
}
}
finally
{
SysLog.LogProvider = orgProvider;
}
}
//---------------------------------------------------------------------
// IServiceHost implementations
/// <summary>
/// Initializes the service user interface.
/// </summary>
/// <param name="args">The command line arguments.</param>
/// <param name="service">The service to associate with this instance.</param>
/// <param name="logProvider">The optional system log provider (or <c>null</c>).</param>
/// <param name="start"><c>true</c> to start the service.</param>
public void Initialize(string[] args, IService service, ISysLogProvider logProvider, bool start)
{
this.logProvider = logProvider;
this.args = args;
this.service = service;
this.autoStart = start;
}
//---------------------------------------------------------------------
// IServiceHost implementations
/// <summary>
/// Initializes the service user interface.
/// </summary>
/// <param name="args">The command line arguments.</param>
/// <param name="service">The service to associate with this instance.</param>
/// <param name="logProvider">The optional system log provider (or <c>null</c>).</param>
/// <param name="start"><c>true</c> to start the service.</param>
public void Initialize(string[] args, IService service, ISysLogProvider logProvider, bool start)
{
this.args = args;
this.service = service;
if (start)
{
Start();
}
}
/// <summary>
/// Instantiates a service host that can be explicitly controlled by the application.
/// </summary>
/// <param name="service">The service instance.</param>
/// <param name="logProvider">Specifies the system log provider (or <c>null</c>).</param>
/// <param name="args">The command line arguments to be passed to the service (or <c>null</c>).</param>
public ServiceHost(IService service, ISysLogProvider logProvider, string[] args)
{
if (logProvider == null)
{
logProvider = new NativeSysLogProvider(service.Name);
}
this.service = service;
this.logProvider = logProvider;
this.args = args != null ? args : new string[0];
}
/// <summary>
/// Adds a new log provider to the collection.
/// </summary>
/// <param name="provider">The new provider.</param>
/// <exception cref="ArgumentNullException">Thrown if the provider passed is <c>null</c>.</exception>
public void Add(ISysLogProvider provider)
{
if (provider == null)
{
throw new ArgumentNullException("provider");
}
lock (syncLock)
{
this.providers.Add(provider);
}
}
//---------------------------------------------------------------------
// IServiceHost implementations
/// <summary>
/// Initializes the service user interface.
/// </summary>
/// <param name="args">The command line arguments.</param>
/// <param name="service">The service to associate with this instance.</param>
/// <param name="logProvider">The optional system log provider (or <c>null</c>).</param>
/// <param name="start"><c>true</c> to start the service.</param>
public void Initialize(string[] args, IService service, ISysLogProvider logProvider, bool start)
{
if (logProvider != null)
{
SysLog.LogProvider = logProvider;
}
else
{
SysLog.LogProvider = new NativeSysLogProvider(service.Name);
}
this.service = service;
}
/// <summary>
/// Initializes the service user interface.
/// </summary>
/// <param name="args">The command line arguments.</param>
/// <param name="service">The service to associate with this instance.</param>
/// <param name="logProvider">The optional system log provider (or <c>null</c>).</param>
/// <param name="start"><c>true</c> to start the service.</param>
/// <remarks>
/// If a non-<c>null</c> <paramref name="logProvider" /> is passed then it will be
/// setup as the global log provider. If <c>null</c> is passed then the service
/// host will initialize a provider that logs events to the FreeSWITCH logging
/// subsystem.
/// </remarks>
public void Initialize(string[] args, IService service, ISysLogProvider logProvider, bool start)
{
this.service = service;
if (logProvider == null)
{
SysLog.LogProvider = new SwitchLogProvider();
}
if (start)
{
Service.Start(this, args);
}
}
private IService service; // The associated service instance
/// <summary>
/// Initializes the service user interface.
/// </summary>
/// <param name="args">The command line arguments.</param>
/// <param name="service">The service to associate with this instance.</param>
/// <param name="logProvider">The optional system log provider (or <c>null</c>).</param>
/// <param name="start"><c>true</c> to start the service.</param>
public void Initialize(string[] args, IService service, ISysLogProvider logProvider, bool start)
{
if (logProvider != null)
{
SysLog.LogProvider = logProvider;
}
this.service = service;
if (start)
{
try
{
service.Start(this, args);
}
catch (Exception e)
{
SysLog.LogException(e);
}
}
}
/// <summary>
/// Runs the service passed as either a native service or a Windows
/// forms application, depending on the command line arguments
/// passed.
/// </summary>
/// <param name="service">The service instance.</param>
/// <param name="logProvider">Specifies the system log provider (or <c>null</c>).</param>
/// <param name="args">The command line arguments.</param>
/// <remarks>
/// <para>
/// This method intreprets the following command-line arguments:
/// "-mode" and "-start".
/// </para>
/// <para>
/// The -mode parameter can be passed as:
/// </para>
/// <code language="none">
/// -mode:console Runs as a console application
/// -mode:service Runs as a native Windows service
/// -mode:form Runs as a Windows Forms application
/// </code>
/// <note>
/// Windows CE supports only -mode:console and any
/// other parameter will be ignored. If none of these are
/// passed then -mode:service will be assumed.
/// </note>
/// <para>
/// The "-start" argument is necessary only if the service
/// is running as a Windows form application. If present, this
/// indicates that the service should be started automatically
/// by this method.
/// </para>
/// <para>
/// The <paramref name="logProvider" /> parameter can be used to override the default
/// system log provider implementation which will be provided
/// if <paramref name="logProvider" /> as <c>null</c>. By default, services hosted as a Windows Form
/// will direct the system log to a control on the form as well as the
/// Windows event log. Native and internal services will use the
/// Windows event log, and console services will discard log postings by
/// default.
/// </para>
/// </remarks>
public static void Run(IService service, ISysLogProvider logProvider, string[] args)
{
var mode = Mode.Service;
var autoStart = false;
foreach (string arg in args)
{
switch (arg.ToLowerInvariant())
{
case "-mode:console":
mode = Mode.Console;
break;
case "-mode:service":
mode = Mode.Service;
break;
case "-mode:form":
mode = Mode.Form;
break;
case "-start":
autoStart = true;
break;
}
}
switch (mode)
{
case Mode.Console:
{
var host = new ConsoleServiceHost();
host.Initialize(args, service, logProvider, true);
service.Start(host, args);
host.WaitForStop();
break;
}
case Mode.Service:
{
var host = new NativeServiceHost();
System.ServiceProcess.ServiceBase[] services = new System.ServiceProcess.ServiceBase[] { host };
host.Initialize(args, service, logProvider, false);
System.ServiceProcess.ServiceBase.Run(services);
break;
}
case Mode.Form:
{
var host = new FormServiceHost();
host.Initialize(args, service, logProvider, autoStart);
Application.Run(host);
break;
}
}
}
