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* Added ExtensionLoader, a generic plugin system with internal, external assembly, and source file plugin loading as well as interface binding

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* Switched Simian over to ExtensionLoader

git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@2258 52acb1d6-8a22-11de-b505-999d5b087335
This commit is contained in:
John Hurliman
2008-10-05 22:05:18 +00:00
parent 4f79c6aa7c
commit 644d415e60
24 changed files with 315 additions and 265 deletions
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107
Programs/Simian/Simian.cs
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@@ -5,6 +5,8 @@ using System.IO;
using System.Text;
using System.Xml;
using System.Threading;
using System.Reflection;
using ExtensionLoader;
using OpenMetaverse;
using OpenMetaverse.Capabilities;
using OpenMetaverse.Packets;
@@ -54,16 +56,35 @@ namespace Simian
RegionHandle = Helpers.UIntsToLong(REGION_X, REGION_Y);
// Load all of the extensions
ExtensionLoader.LoadAllExtensions(AppDomain.CurrentDomain.BaseDirectory, this);
foreach (ISimianExtension extension in ExtensionLoader.Extensions)
try
{
// Assign to an interface if possible
TryAssignToInterface(extension);
// Load all of the extensions
List<string> references = new List<string>();
references.Add("OpenMetaverseTypes.dll");
references.Add("OpenMetaverse.dll");
references.Add("Simian.exe");
Dictionary<Type, FieldInfo> assignables = GetInterfaces();
ExtensionLoader<Simian>.LoadAllExtensions(Assembly.GetExecutingAssembly(),
AppDomain.CurrentDomain.BaseDirectory, this, references,
"Simian.*.dll", "Simian.*.cs", this, assignables);
}
catch (ExtensionException ex)
{
Logger.Log("Interface loading failed, shutting down: " + ex.Message, Helpers.LogLevel.Error);
Stop();
return false;
}
foreach (ISimianExtension extension in ExtensionLoader.Extensions)
foreach (IExtension extension in ExtensionLoader<Simian>.Extensions)
{
// Track all of the extensions with persistence
if (extension is IPersistable)
PersistentExtensions.Add((IPersistable)extension);
}
foreach (IExtension extension in ExtensionLoader<Simian>.Extensions)
{
// Start persistance providers after all other extensions
if (!(extension is IPersistenceProvider))
@@ -73,7 +94,7 @@ namespace Simian
}
}
foreach (ISimianExtension extension in ExtensionLoader.Extensions)
foreach (IExtension extension in ExtensionLoader<Simian>.Extensions)
{
// Start the persistance provider(s)
if (extension is IPersistenceProvider)
@@ -83,28 +104,19 @@ namespace Simian
}
}
if (!CheckInterfaces())
{
Logger.Log("Missing interfaces, shutting down", Helpers.LogLevel.Error);
Stop();
return false;
}
else
{
return true;
}
return true;
}
public void Stop()
{
foreach (ISimianExtension extension in ExtensionLoader.Extensions)
foreach (IExtension extension in ExtensionLoader<Simian>.Extensions)
{
// Stop persistance providers first
if (extension is IPersistenceProvider)
extension.Stop();
}
foreach (ISimianExtension extension in ExtensionLoader.Extensions)
foreach (IExtension extension in ExtensionLoader<Simian>.Extensions)
{
// Stop all other extensions
if (!(extension is IPersistenceProvider))
@@ -134,56 +146,17 @@ namespace Simian
UDP.BroadcastPacket(offline, PacketCategory.State);
}
void TryAssignToInterface(ISimianExtension extension)
Dictionary<Type, FieldInfo> GetInterfaces()
{
if (extension is IAuthenticationProvider)
Authentication = (IAuthenticationProvider)extension;
else if (extension is IAccountProvider)
Accounts = (IAccountProvider)extension;
else if (extension is IUDPProvider)
UDP = (IUDPProvider)extension;
else if (extension is ISceneProvider)
Scene = (ISceneProvider)extension;
else if (extension is IAssetProvider)
Assets = (IAssetProvider)extension;
else if (extension is IAvatarProvider)
Avatars = (IAvatarProvider)extension;
else if (extension is IInventoryProvider)
Inventory = (IInventoryProvider)extension;
else if (extension is IParcelProvider)
Parcels = (IParcelProvider)extension;
else if (extension is IMeshingProvider)
Mesher = (IMeshingProvider)extension;
Dictionary<Type, FieldInfo> interfaces = new Dictionary<Type, FieldInfo>();
// Track all of the extensions with persistence
if (extension is IPersistable)
PersistentExtensions.Add((IPersistable)extension);
}
foreach (FieldInfo field in this.GetType().GetFields())
{
if (field.FieldType.IsInterface)
interfaces.Add(field.FieldType, field);
}
bool CheckInterfaces()
{
if (Authentication == null)
Logger.Log("No IAuthenticationProvider interface loaded", Helpers.LogLevel.Error);
else if (Accounts == null)
Logger.Log("No IAccountProvider interface loaded", Helpers.LogLevel.Error);
else if (UDP == null)
Logger.Log("No IUDPProvider interface loaded", Helpers.LogLevel.Error);
else if (Scene == null)
Logger.Log("No ISceneProvider interface loaded", Helpers.LogLevel.Error);
else if (Assets == null)
Logger.Log("No IAssetProvider interface loaded", Helpers.LogLevel.Error);
else if (Avatars == null)
Logger.Log("No IAvatarProvider interface loaded", Helpers.LogLevel.Error);
else if (Inventory == null)
Logger.Log("No IInventoryProvider interface loaded", Helpers.LogLevel.Error);
else if (Parcels == null)
Logger.Log("No IParcelProvider interface loaded", Helpers.LogLevel.Error);
else if (Mesher == null)
Logger.Log("No IMeshingProvider interface loaded", Helpers.LogLevel.Error);
else
return true;
return false;
return interfaces;
}
void InitHttpServer(int port, bool ssl)