public Assembly InvokeResolveAssembly(string fullAssemblyName)
{
AssemblyResolveEventArgs resolveArgs = new AssemblyResolveEventArgs(fullAssemblyName);
this.AssemblyResolve(this, resolveArgs);
return(resolveArgs.ResolvedAssembly);
}
private void assemblyLoader_AssemblyResolve(object sender, AssemblyResolveEventArgs args)
{
// Early-out, if the Assembly has already been resolved
if (args.IsResolved)
{
return;
}
// Search for editor plugins that haven't been loaded yet, and load them first.
// This is required to satisfy dependencies while loading plugins, since
// we can't know which one requires which beforehand.
foreach (string libFile in this.AssemblyLoader.AvailableAssemblyPaths)
{
if (!libFile.EndsWith(".editor.dll", StringComparison.OrdinalIgnoreCase))
{
continue;
}
string libName = PathOp.GetFileNameWithoutExtension(libFile);
if (libName.Equals(args.AssemblyName, StringComparison.OrdinalIgnoreCase))
{
EditorPlugin plugin = this.LoadPlugin(libFile);
if (plugin != null)
{
args.Resolve(plugin.PluginAssembly);
return;
}
}
}
}
private void AssemblyLoader_AssemblyResolve(object sender, AssemblyResolveEventArgs args)
{
// Early-out, if the Assembly has already been resolved
if (args.IsResolved)
{
return;
}
// Search for core plugins that haven't been loaded yet, and load them first.
// This is required to satisfy dependencies while loading plugins, since
// we can't know which one requires which beforehand.
foreach (string libFile in this.AssemblyLoader.AvailableAssemblyPaths)
{
if (!libFile.EndsWith(".core.dll", StringComparison.OrdinalIgnoreCase))
{
continue;
}
string libName = PathOp.GetFileNameWithoutExtension(libFile);
if (libName.Equals(args.AssemblyName, StringComparison.OrdinalIgnoreCase))
{
CorePlugin plugin = this.LoadPlugin(libFile);
if (plugin != null)
{
args.Resolve(plugin.PluginAssembly);
return;
}
}
}
// Search for other libraries that might be located inside the plugin directory
foreach (string libFile in this.AssemblyLoader.AvailableAssemblyPaths)
{
// Don't load editor (or any other) plugins here, only auxilliary libs allowed
if (libFile.EndsWith(".editor.dll", StringComparison.OrdinalIgnoreCase))
{
continue;
}
string libName = PathOp.GetFileNameWithoutExtension(libFile);
if (libName.Equals(args.AssemblyName, StringComparison.OrdinalIgnoreCase))
{
Assembly assembly = this.LoadAuxilliaryLibrary(libFile, false);
if (assembly != null)
{
args.Resolve(assembly);
return;
}
}
}
}
private void assemblyLoader_AssemblyResolve(object sender, AssemblyResolveEventArgs args)
{
// Early-out, if the Assembly has already been resolved
if (args.IsResolved)
{
return;
}
// Are we searching for an already loaded plugin?
if (this.pluginRegistry.TryGetValue(args.AssemblyName, out T plugin))
{
args.Resolve(plugin.PluginAssembly);
return;
}
}
private Assembly CurrentDomainAssemblyResolve(object sender, AssemblyResolveEventArgs args)
{
var assemblyName = new AssemblyName(args.Name);
Assembly assembly = null;
lock (this.resolvedAssemblies)
{
try
{
EqtTrace.Verbose("CurrentDomainAssemblyResolve: Resolving assembly '{0}'.", args.Name);
if (this.resolvedAssemblies.TryGetValue(args.Name, out assembly))
{
return(assembly);
}
// Put it in the resolved assembly so that if below Assembly.Load call
// triggers another assembly resolution, then we don't end up in stack overflow
this.resolvedAssemblies[args.Name] = null;
assembly = Assembly.Load(assemblyName);
// Replace the value with the loaded assembly
this.resolvedAssemblies[args.Name] = assembly;
return(assembly);
}
finally
{
if (assembly == null)
{
EqtTrace.Verbose("CurrentDomainAssemblyResolve: Failed to resolve assembly '{0}'.", args.Name);
}
}
}
}
private Assembly OnResolve(object sender, AssemblyResolveEventArgs args)
{
if (string.IsNullOrEmpty(args?.Name))
{
Debug.Fail("AssemblyResolver.OnResolve: args.Name is null or empty.");
return(null);
}
if (this.searchDirectories == null || this.searchDirectories.Count == 0)
{
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: There are no search directories, returning.", args.Name);
return(null);
}
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: Resolving assembly.", args.Name);
// args.Name is like: "Microsoft.VisualStudio.TestTools.Common, Version=[VersionMajor].0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
lock (this.resolvedAssemblies)
{
if (this.resolvedAssemblies.TryGetValue(args.Name, out var assembly))
{
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: Resolved from cache.", args.Name);
return(assembly);
}
AssemblyName requestedName = null;
try
{
// Can throw ArgumentException, FileLoadException if arg is empty/wrong format, etc. Should not return null.
requestedName = new AssemblyName(args.Name);
}
catch (Exception ex)
{
if (EqtTrace.IsInfoEnabled)
{
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: Failed to create assemblyName. Reason:{1} ", args.Name, ex);
}
this.resolvedAssemblies[args.Name] = null;
return(null);
}
Debug.Assert(requestedName != null && !string.IsNullOrEmpty(requestedName.Name), "AssemblyResolver.OnResolve: requested is null or name is empty!");
foreach (var dir in this.searchDirectories)
{
if (string.IsNullOrEmpty(dir))
{
continue;
}
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: Searching in: '{1}'.", args.Name, dir);
foreach (var extension in SupportedFileExtensions)
{
var assemblyPath = Path.Combine(dir, requestedName.Name + extension);
try
{
if (!File.Exists(assemblyPath))
{
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: Assembly path does not exist: '{1}', returning.", args.Name, assemblyPath);
continue;
}
AssemblyName foundName = this.platformAssemblyLoadContext.GetAssemblyNameFromPath(assemblyPath);
if (!this.RequestedAssemblyNameMatchesFound(requestedName, foundName))
{
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: File exists but version/public key is wrong. Try next extension.", args.Name);
continue; // File exists but version/public key is wrong. Try next extension.
}
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: Loading assembly '{1}'.", args.Name, assemblyPath);
assembly = this.platformAssemblyLoadContext.LoadAssemblyFromPath(assemblyPath);
this.resolvedAssemblies[args.Name] = assembly;
EqtTrace.Info("AssemblyResolver.OnResolve: Resolved assembly: {0}, from path: {1}", args.Name, assemblyPath);
return(assembly);
}
catch (FileLoadException ex)
{
EqtTrace.Error("AssemblyResolver.OnResolve: {0}: Failed to load assembly. Reason:{1} ", args.Name, ex);
// Re-throw FileLoadException, because this exception means that the assembly
// was found, but could not be loaded. This will allow us to report a more
// specific error message to the user for things like access denied.
throw;
}
catch (Exception ex)
{
// For all other exceptions, try the next extension.
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: Failed to load assembly. Reason:{1} ", args.Name, ex);
}
}
}
if (EqtTrace.IsInfoEnabled)
{
EqtTrace.Info("AssemblyResolver.OnResolve: {0}: Failed to load assembly.", args.Name);
}
this.resolvedAssemblies[args.Name] = null;
return(null);
}
}
