// private List<ScriptableMethodInfo> _methods;
// public ReadOnlyCollection<ScriptableMethodInfo> Methods { get; private set; }
private ServerMethodScriptGenerator(ServerMethodPluginRegistration registration, string assemblyInstanceId, PluginInfo pluginInfo) : base(assemblyInstanceId, pluginInfo)
{
this.Registration = registration;
}
public static ServerMethodScriptGenerator Create(ServerMethodPluginRegistration registration, PluginInfo pluginInfo)
{
var ret = new ServerMethodScriptGenerator(registration, registration.PluginAssemblyInstanceId, pluginInfo);
ret.Process();
return(ret);
}
//AssemblyLoadContext, AssemblyName, Assembly?
// private Assembly OnResolveAssembly(AssemblyLoadContext ctx, AssemblyName asmName)
// {
// try
// {
// // try and find relative to existing assebmlies loaded in ctx
// foreach (var asm in ctx.Assemblies)
// {
// var fi = new FileInfo(asm.Location);
// var path = Path.Combine(fi.DirectoryName, asmName.Name + ".dll");
// if (File.Exists(path))
// {
// try
// {
// var loadedAsm = ctx.LoadFromAssemblyPath(path);
// if (loadedAsm != null) return loadedAsm;
// }
// catch { }
// }
// }
// SessionLog.Error($"Failed to resolve {asmName.FullName} in context {ctx.Name}");
// return null;
// }
// catch
// {
// return null;
// }
// }
// private Assembly OnResolveAssembly(object sender, ResolveEventArgs e)
// {
// try
// {
// var asmName = new AssemblyName(e.Name);
// var requestingLocation = e.RequestingAssembly.Location;
// var requestingDir = Path.GetDirectoryName(requestingLocation);
// // look for a dll in the same location as the requesting assembly
// var path = Path.Combine(requestingDir, asmName.Name + ".dll");
// if (!File.Exists(path)) return null;
// Assembly.LoadFrom(path);
// return null;
// }
// catch
// {
// return null;
// }
// }
// private void InitServerWidePlugins()
// {
// try
// {
// if (PluginAssemblies == null) return;
// foreach (var pluginAssembly in PluginAssemblies)
// {
// var pluginInfoCollection = pluginAssembly.Plugins.Where(p => p.Type == OM.PluginType.ServerMethod || p.Type == OM.PluginType.BackgroundThread);
// foreach (var pluginInfo in pluginInfoCollection)
// {
// if (pluginInfo.Type == OM.PluginType.BackgroundThread)
// {
// _backgroundThreadManager.Register(pluginInfo);
// }
// else if (pluginInfo.Type == OM.PluginType.ServerMethod)
// {
// ServerMethodManager.Register(pluginAssembly.InstanceId, pluginInfo);
// }
// }
// }
// }
// catch (Exception ex)
// {
// SessionLog.Exception(ex);
// }
// }
// parses an Assembly and checks for Plugin-type interface. If found each of those interfaces are tested for validity in terms of mandatory Attribute values and uniqueness
private bool ParsePluginAssembly(Assembly pluginAssembly, out List <PluginInfo> pluginInfoList, out List <string> errorList, bool checkForConflict = true)
{
errorList = new List <string>();
pluginInfoList = new List <PluginInfo>();
if (pluginAssembly.DefinedTypes != null)
{
var pluginTypeList = pluginAssembly.DefinedTypes.Where(typ => typ.IsSubclassOf(typeof(PluginBase))).ToList();
if (pluginTypeList != null && pluginTypeList.Count > 0)
{
foreach (var pluginType in pluginTypeList)
{
var pluginInfo = new PluginInfo();
try
{
var pluginData = pluginType.GetCustomAttribute(typeof(PluginDataAttribute)) as PluginDataAttribute;
if (pluginData == null)
{
errorList.Add($"Plugin '{pluginType.FullName}' from assembly '{pluginAssembly.FullName}' does not have a PluginData attribute defined on the class level. Add a jsdal_plugin.PluginDataAttribute to the class.");
continue;
}
if (!Guid.TryParse(pluginData.Guid, out var pluginGuid))
{
errorList.Add($"Plugin '{pluginType.FullName}' does not have a valid Guid value set on its PluginData attribute.");
continue;
}
if (checkForConflict)
{
var conflict = PluginAssemblies.SelectMany(a => a.Plugins).FirstOrDefault(p => p.Guid.Equals(pluginGuid));
if (conflict != null)
{
errorList.Add($"Plugin '{pluginType.FullName}' has a conflicting Guid. The conflict is on assembly {conflict.TypeInfo.FullName} and plugin '{conflict.Name}' with Guid value {conflict.Guid}.");
continue;
}
}
if (pluginType.IsSubclassOf(typeof(ExecutionPlugin)))
{
pluginInfo.Type = OM.PluginType.Execution;
}
else if (pluginType.IsSubclassOf(typeof(BackgroundThreadPlugin)))
{
pluginInfo.Type = OM.PluginType.BackgroundThread;
}
else if (pluginType.IsSubclassOf(typeof(ServerMethodPlugin)))
{
pluginInfo.Type = OM.PluginType.ServerMethod;
// TODO: Additional validation: Look for at least on ServerMethod? otherwise just a warning?
// What about unique names of ServerMethods?
// Validate Custom Namespace validity (must be JavaScript safe)
}
else
{
errorList.Add($"Unknown plugin type '{pluginType.FullName}'.");
continue;
}
pluginInfo.Assembly = pluginAssembly;
pluginInfo.Name = pluginData.Name;
pluginInfo.Description = pluginData.Description;
pluginInfo.TypeInfo = pluginType;
pluginInfo.Guid = pluginGuid;
//errorList.Add($"Plugin '{pluginInfo.Name}' ({pluginInfo.Guid}) loaded. Assembly: {pluginAssembly.FullName}");
pluginInfoList.Add(pluginInfo);
}
catch (Exception ex)
{
errorList.Add("Failed to instantiate type '{pluginType.FullName}'.");
errorList.Add(ex.ToString());
SessionLog.Error("Failed to instantiate type '{0}'. See the exception that follows.", pluginType.FullName);
SessionLog.Exception(ex);
}
}
}
else
{
errorList.Add($"Failed to find any jsDAL Server plugins in the assembly '{pluginAssembly.Location}'. Make sure you have a public class available that derives from one of the plugin types.");
}
}
else
{
errorList.Add($"Failed to find any jsDAL Server plugins in the assembly '{pluginAssembly.Location}'. Make sure you have a public class available that derives from one of the plugin types.");
}
return(errorList == null || errorList.Count == 0);
}