/// <summary>
/// Entry point for the program which launches the server
/// </summary>
/// <param name="args">Command Line Arguments</param>
static void Main(string[] args)
{
try
{
RdfServerOptions options = new RdfServerOptions(args);
switch (options.Mode)
{
case RdfServerConsoleMode.Run:
using (HttpServer server = options.GetServerInstance())
{
if (!options.QuietMode)
{
Console.WriteLine("rdfServer: Running");
}
server.Start();
while (true)
{
Thread.Sleep(1000);
}
}
break;
case RdfServerConsoleMode.Quit:
return;
}
if (!options.QuietMode)
{
Console.WriteLine("rdfServer: Finished - press any key to exit");
Console.ReadKey();
}
}
catch (Exception ex)
{
Console.Error.WriteLine("rdfServer: Error: An unexpected error occurred while trying to start up the Server. See subsequent error messages for details:");
Console.Error.WriteLine(ex.Message);
Console.Error.WriteLine(ex.StackTrace);
while (ex.InnerException != null)
{
Console.Error.WriteLine();
Console.Error.WriteLine("Inner Exception:");
Console.Error.WriteLine(ex.InnerException.Message);
Console.Error.WriteLine(ex.InnerException.StackTrace);
ex = ex.InnerException;
}
}
}
/// <summary>
/// Processes a request
/// </summary>
/// <param name="context">Server Context</param>
public void ProcessRequest(HttpServerContext context)
{
//Get the server options
RdfServerOptions options = context.Server.AppSettings[RdfServerOptions.ServerOptionsKey] as RdfServerOptions;
if (options == null)
{
throw new DotNetRdfConfigurationException("rdfServer Options were not found");
}
//Get the configuration graph
IGraph g = context.Server.Context[RdfServerOptions.DotNetRdfConfigKey] as IGraph;
if (g == null)
{
g = options.LoadConfigurationGraph();
if (g == null)
{
throw new DotNetRdfConfigurationException("The HTTP Server does not contain a Configuration Graph in its State Information");
}
context.Server.Context[RdfServerOptions.DotNetRdfConfigKey] = g;
}
//Generate the expected Path and try and load the Configuration using the appropriate Node
String expectedPath;
WebConfigurationLoader.FindObject(g, context.Request.Url, out expectedPath);
INode objNode = g.GetUriNode(new Uri("dotnetrdf:" + expectedPath));
if (objNode == null)
{
throw new DotNetRdfConfigurationException("The Configuration Graph does not contain a URI Node with the expected URI <dotnetrdf:" + expectedPath + ">");
}
this._config = new SparqlServerConfiguration(g, objNode);
//Dispath the request appropriately
String path = context.Request.Url.AbsolutePath;
path = path.Substring(path.LastIndexOf('/') + 1);
switch (path)
{
case "query":
this.ProcessQueryRequest(context);
break;
case "update":
this.ProcessUpdateRequest(context);
break;
case "description":
//TODO: Add Service Description support
context.Response.StatusCode = (int)HttpStatusCode.NotImplemented;
break;
default:
//TODO: Can we easily add Protocol Support or not?
//this.ProcessProtocolRequest(context);
context.Response.StatusCode = (int)HttpStatusCode.NotFound;
break;
}
}