public static Protocol createStack(Protocol middle, out Protocol bot)
{
ProtocolSinkStack stack = new ProtocolSinkStack(null,null);
middle.ProtocolSinkStack = stack;
TOP top = new TOP("TOP");
BOTTOM bottom = new BOTTOM();
bot = bottom;
top.DownProtocol = middle;
middle.DownProtocol = bottom;
bottom.DownProtocol = null;
top.UpProtocol = null;
middle.UpProtocol = top;
bottom.UpProtocol = middle;
bottom.startDownHandler();
bottom.startUpHandler();
middle.startDownHandler();
middle.startUpHandler();
top.startDownHandler();
top.startUpHandler();
top.start();
middle.start();
bottom.start();
bottom.up(new Event(Event.SET_LOCAL_ADDRESS,localAddr));
return top;
}
/// <remarks>
/// Uses <c>Activator.CreateInstance()</c> initialise each <c>Protocol</c>
/// </remarks>
/// <summary>
/// Creates the Protocol, sets the properties and calls <c>init()</c>
/// </summary>
/// <param name="st">The <c>ProtocolSinkStack</c> the <c>Protocol</c>
/// should be linked to
/// </param>
/// <returns></returns>
public Object createLayer(ProtocolSinkStack st)
{
ObjectHandle obj = null;
int prefixSize = 3;
String[] prefix = new String[prefixSize];
prefix[0] = "GCT.Protocols.";
prefix[1] = "GCT.";
prefix[2] = "GCT.Protocols.";
if (assembly_name != null)
{
prefix[0] = "";
}
for (int i = 0; i < prefixSize; i++)
{
try
{
obj = Activator.CreateInstance(assembly_name, prefix[i] + protocol_name);
if (Trace.trace)
{
Trace.info("Configurator.createLayer()", "Created Layer " + prefix[i] + protocol_name);
}
if (obj != null)
{
break;
}
}
catch (Exception e1)
{
Console.WriteLine(e1 + "\n" + e1.StackTrace);
Console.WriteLine();
}
}
Protocol gSink = null;
if (obj != null)
{
gSink = (Protocol)obj.Unwrap();
gSink.ProtocolSinkStack = st;
if (!gSink.setPropertiesInternal(properties))
{
return(null);
}
gSink.init();
}
else
{
if (Trace.trace)
{
Trace.error("Configurator.createLayer()", "Couldn't create layer: " + protocol_name);
}
}
return(gSink);
}
/// <remarks>
/// The following steps are followed:
/// <list type="">
/// <item>A <c>ProtocolConfiguration</c> object is created for each protocol</item>
/// <item>The <c>Protocol</c>s are created from the <c>ProtocolConfiguration</c> objects</item>
/// <item>The Protocols are all connected together</item>
/// </list>
/// </remarks>
/// <summary>
/// Sets up the <c>ProtocolSinkStack</c> with the specified configuration string.
/// </summary>
/// <param name="configuration">The String configuration of the stack</param>
/// <param name="st">Reference to the <c>ProtocolSinkStack</c> which each <c>Protocol</c> should reference</param>
/// <returns>The top-most <c>Protocol</c> in the stack</returns>
public Protocol setupStack(string configuration, ProtocolSinkStack st)
{
ProtocolConfiguration[] layer_configs;
Protocol[] layers;
Protocol top_prot;
layer_configs = parseConfigurations(configuration);
layers = createProtocols(layer_configs, st);
if(layers == null)
return null;
top_prot = connectProtocols(layers);
return top_prot;
}
/// <remarks>
/// The following steps are followed:
/// <list type="">
/// <item>A <c>ProtocolConfiguration</c> object is created for each protocol</item>
/// <item>The <c>Protocol</c>s are created from the <c>ProtocolConfiguration</c> objects</item>
/// <item>The Protocols are all connected together</item>
/// </list>
/// </remarks>
/// <summary>
/// Sets up the <c>ProtocolSinkStack</c> with the specified configuration string.
/// </summary>
/// <param name="configuration">The String configuration of the stack</param>
/// <param name="st">Reference to the <c>ProtocolSinkStack</c> which each <c>Protocol</c> should reference</param>
/// <returns>The top-most <c>Protocol</c> in the stack</returns>
public Protocol setupStack(string configuration, ProtocolSinkStack st)
{
ProtocolConfiguration[] layer_configs;
Protocol[] layers;
Protocol top_prot;
layer_configs = parseConfigurations(configuration);
layers = createProtocols(layer_configs, st);
if (layers == null)
{
return(null);
}
top_prot = connectProtocols(layers);
return(top_prot);
}
/// <summary>
/// Creates an array of <c>Protocols</c> from the configurations
/// </summary>
/// <param name="protocol_configs">Array of <c>ProtocolConfiguration</c> objects</param>
/// <param name="stack">Instance <c>ProtocolSinkStack</c> which the Protocol layers should reference</param>
/// <returns>Array of <c>Protocol</c> objects</returns>
private Protocol[] createProtocols(ProtocolConfiguration[] protocol_configs, ProtocolSinkStack stack)
{
Protocol[] retval = new Protocol[protocol_configs.Length];
Protocol layer;
for (int i = 0; i < protocol_configs.Length; i++)
{
layer = (Protocol)protocol_configs[i].createLayer(stack); //stack
if (layer == null)
{
return(null);
}
retval[i] = layer;
}
sanityCheck(retval);
return(retval);
}
/// <remarks>
/// Uses <c>Activator.CreateInstance()</c> initialise each <c>Protocol</c>
/// </remarks>
/// <summary>
/// Creates the Protocol, sets the properties and calls <c>init()</c>
/// </summary>
/// <param name="st">The <c>ProtocolSinkStack</c> the <c>Protocol</c>
/// should be linked to
/// </param>
/// <returns></returns>
public Object createLayer(ProtocolSinkStack st)
{
ObjectHandle obj = null;
int prefixSize = 3;
String[] prefix = new String[prefixSize];
prefix[0] = "GCT.Protocols.";
prefix[1] = "GCT.";
prefix[2] = "GCT.Protocols.";
if(assembly_name != null)
prefix[0] = "";
for(int i = 0; i<prefixSize ; i++)
{
try
{
obj = Activator.CreateInstance(assembly_name, prefix[i] + protocol_name);
if(Trace.trace)
Trace.info("Configurator.createLayer()","Created Layer " + prefix[i] + protocol_name);
if (obj != null)
{
break;
}
}
catch(Exception e1)
{
Console.WriteLine(e1+ "\n"+e1.StackTrace);
Console.WriteLine();
}
}
Protocol gSink = null;
if (obj != null)
{
gSink = (Protocol)obj.Unwrap();
gSink.ProtocolSinkStack = st;
if(!gSink.setPropertiesInternal(properties))
return null;
gSink.init();
}
else
{
if(Trace.trace)
Trace.error("Configurator.createLayer()", "Couldn't create layer: " + protocol_name);
}
return gSink;
}
/// <summary>
/// Creates an array of <c>Protocols</c> from the configurations
/// </summary>
/// <param name="protocol_configs">Array of <c>ProtocolConfiguration</c> objects</param>
/// <param name="stack">Instance <c>ProtocolSinkStack</c> which the Protocol layers should reference</param>
/// <returns>Array of <c>Protocol</c> objects</returns>
private Protocol[] createProtocols(ProtocolConfiguration[] protocol_configs, ProtocolSinkStack stack)
{
Protocol[] retval = new Protocol[protocol_configs.Length];
Protocol layer;
for(int i=0; i < protocol_configs.Length; i++)
{
layer = (Protocol)protocol_configs[i].createLayer(stack); //stack
if(layer == null)
return null;
retval[i] = layer;
}
sanityCheck(retval);
return retval;
}
// -=-=-=-=-=-=-=- Group Channel Methods -=-=-=-=-=-=-=-=-=-=-=-
/// <summary>
/// Sets up the ProtocolSinkStack
/// </summary>
private void SetupChannel()
{
prot_stack = new ProtocolSinkStack(this, props);
prot_stack.ResponseChooser = responseChooser;
prot_stack.setup();
}
