public virtual Assembly LoadAssembly(AssemblyName assemblyName,
Func <IPluginLoadContext, AssemblyName, ValueOrProceed <Assembly> > loadFromDependencyContext,
Func <IPluginLoadContext, AssemblyName, ValueOrProceed <Assembly> > loadFromRemote,
Func <IPluginLoadContext, AssemblyName, ValueOrProceed <Assembly> > loadFromAppDomain)
{
if (assemblyName.Name == null)
{
return(null);
}
ValueOrProceed <Assembly> valueOrProceed = ValueOrProceed <Assembly> .FromValue(null, true);
if (IsHostAssembly(assemblyName) && !IsRemoteAssembly(assemblyName)) // Load from Default App Domain (host)
{
valueOrProceed = loadFromAppDomain(this.pluginLoadContext, assemblyName);
if (valueOrProceed.Value != null)
{
return(null); // fallback to default loading mechanism
}
}
if (valueOrProceed.CanProceed)
{
valueOrProceed = loadFromDependencyContext(this.pluginLoadContext, assemblyName);
}
if (valueOrProceed.CanProceed)
{
valueOrProceed = loadFromRemote(this.pluginLoadContext, assemblyName);
}
return(valueOrProceed.Value);
}
public void LoadedUnmanagedFromRemote(string unmanagedDllName, ValueOrProceed <string> valueOrProceed)
{
if (valueOrProceed.Value != null)
{
Log($"Plugin<{this.pluginType}> unmananged assembly {unmanagedDllName} was loaded from the Remote Location");
}
}
public virtual NativeAssembly LoadUnmanagedDll(string unmanagedDllName,
Func <IPluginLoadContext, string, ValueOrProceed <string> > loadFromDependencyContext,
Func <IPluginLoadContext, string, ValueOrProceed <string> > loadFromRemote,
Func <IPluginLoadContext, string, ValueOrProceed <IntPtr> > loadFromAppDomain)
{
ValueOrProceed <string> valueOrProceed = ValueOrProceed <string> .FromValue(String.Empty, true);
ValueOrProceed <IntPtr> ptrValueOrProceed = ValueOrProceed <IntPtr> .FromValue(IntPtr.Zero, true);
valueOrProceed = loadFromDependencyContext(this.pluginLoadContext, unmanagedDllName);
this.logger.LoadedUnmanagedFromDependencyContext(unmanagedDllName, valueOrProceed);
if (valueOrProceed.CanProceed)
{
ptrValueOrProceed = loadFromAppDomain(this.pluginLoadContext, unmanagedDllName);
this.logger.LoadedUnmanagedFromAppDomain(unmanagedDllName, ptrValueOrProceed);
}
if (valueOrProceed.CanProceed && ptrValueOrProceed.CanProceed)
{
valueOrProceed = loadFromRemote(this.pluginLoadContext, unmanagedDllName);
this.logger.LoadedUnmanagedFromRemote(unmanagedDllName, valueOrProceed);
}
return(NativeAssembly.Create(valueOrProceed.Value, ptrValueOrProceed.Value));
}
protected virtual ValueOrProceed <AssemblyFromStrategy> LoadFromDefaultContext(IPluginLoadContext pluginLoadContext, AssemblyName assemblyName)
{
try
{
var assembly = Default.LoadFromAssemblyName(assemblyName);
if (assembly != null)
{
return(ValueOrProceed <AssemblyFromStrategy> .FromValue(AssemblyFromStrategy.NotReleasable(assembly), false));
}
}
catch (FileNotFoundException) { } // This can happen if the plugin uses a newer version of a package referenced in the host
var hostAssembly = this.pluginDependencyContext.HostDependencies.FirstOrDefault(h => h.DependencyName.Name == assemblyName.Name);
if (hostAssembly != null && !hostAssembly.AllowDowngrade)
{
if (!!hostAssembly.AllowDowngrade)
{
throw new PrisePluginException($"Plugin<{typeof(T)}> Assembly reference {assemblyName.Name} with version {assemblyName.Version} was requested but not found in the host. The version from the host is {hostAssembly.DependencyName.Version}. Possible version mismatch. Please downgrade your plugin.");
}
this.logger.VersionMismatch(assemblyName, hostAssembly.DependencyName);
}
return(ValueOrProceed <AssemblyFromStrategy> .Proceed());
}
protected virtual ValueOrProceed <string> LoadUnmanagedFromDependencyContext(IPluginLoadContext pluginLoadContext, string unmanagedDllName)
{
var unmanagedDllNameWithoutFileExtension = Path.GetFileNameWithoutExtension(unmanagedDllName);
var platformDependency = this.pluginDependencyContext.PlatformDependencies.FirstOrDefault(d => d.DependencyNameWithoutExtension == unmanagedDllNameWithoutFileExtension);
if (platformDependency != null)
{
var dependencyPath = this.dependencyPathProvider.GetDependencyPath();
if (String.IsNullOrEmpty(dependencyPath))
{
dependencyPath = pluginLoadContext.PluginAssemblyPath;
}
var probingPaths = this.probingPathsProvider.GetProbingPaths();
var pathToDependency = this.pluginDependencyResolver.ResolvePlatformDependencyToPath(dependencyPath, probingPaths, platformDependency);
if (!String.IsNullOrEmpty(pathToDependency))
{
string runtimeCandidate = null;
if (this.options.NativeDependencyLoadPreference == NativeDependencyLoadPreference.PreferInstalledRuntime)
{
// Prefer loading from runtime folder
runtimeCandidate = this.pluginDependencyResolver.ResolvePlatformDependencyPathToRuntime(this.options.PluginPlatformVersion, pathToDependency);
}
return(ValueOrProceed <string> .FromValue(runtimeCandidate ?? pathToDependency, false));
}
}
return(ValueOrProceed <string> .FromValue(String.Empty, true));
}
public void LoadedUnmanagedFromAppDomain(string unmanagedDllName, ValueOrProceed <IntPtr> valueOrProceed)
{
if (valueOrProceed.Value != IntPtr.Zero)
{
Log($"Plugin<{this.pluginType}> unmananged assembly {unmanagedDllName} was loaded from the ApplicationLoadContext.Default");
}
}
public void LoadedUnmanagedFromDependencyContext(string unmanagedDllName, ValueOrProceed <string> valueOrProceed)
{
if (valueOrProceed.Value != null)
{
Log($"Plugin<{this.pluginType}> unmananged assembly {unmanagedDllName} was loaded from the Dependency Context");
}
}
public void LoadedFromRemote(AssemblyName assemblyName, ValueOrProceed <AssemblyFromStrategy> valueOrProceed)
{
if (valueOrProceed.Value != null)
{
Log($"Plugin<{this.pluginType}> assembly {assemblyName.Name} was loaded from the Remote Location");
}
}
public void LoadedFromDependencyContext(AssemblyName assemblyName, ValueOrProceed <AssemblyFromStrategy> valueOrProceed)
{
if (valueOrProceed.Value != null)
{
Log($"Plugin<{this.pluginType}> assembly {assemblyName.Name} was loaded from the Dependency Context");
}
}
protected virtual ValueOrProceed <Assembly> LoadFromRemote(IPluginLoadContext pluginLoadContext, AssemblyName assemblyName)
{
var assemblyFileName = $"{assemblyName.Name}.dll";
if (File.Exists(Path.Combine(pluginLoadContext.PluginAssemblyPath, assemblyFileName)))
{
return(LoadDependencyFromLocalDisk(pluginLoadContext, assemblyFileName));
}
return(ValueOrProceed <Assembly> .Proceed());
}
protected virtual ValueOrProceed <string> LoadUnmanagedFromRemote(IPluginLoadContext pluginLoadContext, string unmanagedDllName)
{
var assemblyFileName = $"{unmanagedDllName}.dll";
var pathToDependency = Path.Combine(pluginLoadContext.PluginAssemblyPath, assemblyFileName);
if (File.Exists(pathToDependency))
{
return(ValueOrProceed <string> .FromValue(pathToDependency, false));
}
return(ValueOrProceed <string> .FromValue(String.Empty, true));
}
/// <summary>
/// This override includes the netcore 3.0 resolver
/// </summary>
/// <param name="assemblyName"></param>
/// <returns></returns>
protected override ValueOrProceed <Assembly> LoadFromDependencyContext(IPluginLoadContext pluginLoadContext, AssemblyName assemblyName)
{
var assemblyPath = resolver.ResolveAssemblyToPath(assemblyName);
if (!String.IsNullOrEmpty(assemblyPath) && File.Exists(assemblyPath))
{
return(ValueOrProceed <Assembly> .FromValue(LoadFromAssemblyPath(assemblyPath), false));
}
return(base.LoadFromDependencyContext(pluginLoadContext, assemblyName));
}
protected override ValueOrProceed <Assembly> LoadFromRemote(IPluginLoadContext pluginLoadContext, AssemblyName assemblyName)
{
var networkAssembly = LoadDependencyFromNetwork(assemblyName);
if (networkAssembly != null)
{
return(ValueOrProceed <Assembly> .FromValue(networkAssembly, false));
}
return(ValueOrProceed <Assembly> .Proceed());
}
protected virtual ValueOrProceed <IntPtr> LoadUnmanagedFromDefault(IPluginLoadContext pluginLoadContext, string unmanagedDllName)
{
var resolution = base.LoadUnmanagedDll(unmanagedDllName);
if (resolution == default(IntPtr))
{
return(ValueOrProceed <IntPtr> .Proceed());
}
return(ValueOrProceed <IntPtr> .FromValue(resolution, false));
}
protected virtual ValueOrProceed <Assembly> LoadDependencyFromLocalDisk(IPluginLoadContext pluginLoadContext, string assemblyFileName)
{
var dependency = LoadFileFromLocalDisk(pluginLoadContext.PluginAssemblyPath, assemblyFileName);
if (dependency == null)
{
return(ValueOrProceed <Assembly> .Proceed());
}
return(ValueOrProceed <Assembly> .FromValue(Assembly.Load(ToByteArray(dependency)), false));
}
protected override ValueOrProceed <string> LoadUnmanagedFromRemote(IPluginLoadContext pluginLoadContext, string unmanagedDllName)
{
var networkUrl = $"{this.baseUrl}/{unmanagedDllName}";
var networkFile = NetworkUtil.Download(this.httpClient, networkUrl);
if (networkFile != null)
{
return(ValueOrProceed <string> .FromValue(NetworkUtil.SaveToTempFolder(this.tempPathProvider.ProvideTempPath($"{unmanagedDllName}.dll"), networkFile), false));
}
return(ValueOrProceed <string> .FromValue(String.Empty, true));
}
protected virtual ValueOrProceed <Assembly> LoadFromDefaultContext(IPluginLoadContext pluginLoadContext, AssemblyName assemblyName)
{
try
{
var assembly = Default.LoadFromAssemblyName(assemblyName);
if (assembly != null)
{
return(ValueOrProceed <Assembly> .FromValue(assembly, false));
}
}
catch (FileNotFoundException) { }
return(ValueOrProceed <Assembly> .Proceed());
}
/// <summary>
/// This override includes the netcore 3.0 resolver
/// </summary>
/// <param name="unmanagedDllName"></param>
/// <returns></returns>
protected override ValueOrProceed <string> LoadUnmanagedFromDependencyContext(IPluginLoadContext pluginLoadContext, string unmanagedDllName)
{
string libraryPath = resolver.ResolveUnmanagedDllToPath(unmanagedDllName);
if (!String.IsNullOrEmpty(libraryPath))
{
string runtimeCandidate = null;
if (this.options.NativeDependencyLoadPreference == NativeDependencyLoadPreference.PreferInstalledRuntime)
{
// Prefer loading from runtime folder
runtimeCandidate = this.pluginDependencyResolver.ResolvePlatformDependencyPathToRuntime(this.options.PluginPlatformVersion, libraryPath);
}
return(ValueOrProceed <string> .FromValue(runtimeCandidate ?? libraryPath, false));
}
return(base.LoadUnmanagedFromDependencyContext(pluginLoadContext, unmanagedDllName));
}
protected virtual ValueOrProceed <Assembly> LoadFromDependencyContext(IPluginLoadContext pluginLoadContext, AssemblyName assemblyName)
{
if (IsResourceAssembly(assemblyName))
{
foreach (var resourceDependency in this.pluginDependencyContext.PluginResourceDependencies)
{
var resourcePath = Path.Combine(resourceDependency.Path, assemblyName.CultureName, assemblyName.Name + ".dll");
if (File.Exists(resourcePath))
{
return(ValueOrProceed <Assembly> .FromValue(LoadFromAssemblyPath(resourcePath), false));
}
}
// Do not proceed probing
return(ValueOrProceed <Assembly> .FromValue(null, false));
}
var pluginDependency = this.pluginDependencyContext.PluginDependencies.FirstOrDefault(d => d.DependencyNameWithoutExtension == assemblyName.Name);
if (pluginDependency != null)
{
var dependencyPath = this.dependencyPathProvider.GetDependencyPath();
if (String.IsNullOrEmpty(dependencyPath))
{
dependencyPath = pluginLoadContext.PluginAssemblyPath;
}
var probingPaths = this.probingPathsProvider.GetProbingPaths();
var dependency = this.pluginDependencyResolver.ResolvePluginDependencyToPath(dependencyPath, probingPaths, pluginDependency);
if (dependency != null)
{
return(ValueOrProceed <Assembly> .FromValue(LoadFromStream(dependency), false));
}
}
var localFile = Path.Combine(this.dependencyPathProvider.GetDependencyPath(), assemblyName.Name + ".dll");
if (File.Exists(localFile))
{
return(ValueOrProceed <Assembly> .FromValue(LoadFromAssemblyPath(localFile), false));
}
return(ValueOrProceed <Assembly> .Proceed());
}
protected override ValueOrProceed <Assembly> LoadFromDependencyContext(IPluginLoadContext pluginLoadContext, AssemblyName assemblyName)
{
if (IsResourceAssembly(assemblyName))
{
foreach (var resourceDependency in this.pluginDependencyContext.PluginResourceDependencies)
{
var resourceNetworkPathToAssembly = Path.Combine(this.baseUrl, Path.Combine(resourceDependency.Path, assemblyName.CultureName, $"{assemblyName.Name}.dll"));
var resourceNetworkAssembly = LoadDependencyFromNetwork(resourceNetworkPathToAssembly);
if (resourceNetworkAssembly != null)
{
return(ValueOrProceed <Assembly> .FromValue(resourceNetworkAssembly, false));
}
}
// Do not proceed probing
return(ValueOrProceed <Assembly> .FromValue(null, false));
}
var pluginDependency = this.pluginDependencyContext.PluginDependencies.FirstOrDefault(d => d.DependencyNameWithoutExtension == assemblyName.Name);
if (pluginDependency != null)
{
var dependencyPath = this.dependencyPathProvider.GetDependencyPath();
var probingPaths = this.probingPathsProvider.GetProbingPaths();
var resolvedNetworkAssembly = this.pluginDependencyResolver.ResolvePluginDependencyToPath(dependencyPath, probingPaths, pluginDependency);
if (resolvedNetworkAssembly != null)
{
return(ValueOrProceed <Assembly> .FromValue(LoadFromStream(resolvedNetworkAssembly), false));
}
}
var networkPathToAssembly = $"{baseUrl}/{Path.Combine(this.dependencyPathProvider.GetDependencyPath(), assemblyName.Name)}.dll";
var networkAssembly = LoadDependencyFromNetwork(networkPathToAssembly);
if (networkAssembly != null)
{
return(ValueOrProceed <Assembly> .FromValue(networkAssembly, false));
}
return(ValueOrProceed <Assembly> .Proceed());
}
protected virtual ValueOrProceed <Assembly> LoadFromDefaultContext(IPluginLoadContext pluginLoadContext, AssemblyName assemblyName)
{
try
{
var assembly = Default.LoadFromAssemblyName(assemblyName);
if (assembly != null)
{
return(ValueOrProceed <Assembly> .FromValue(assembly, false));
}
}
catch (FileNotFoundException) { } // This can happen if the plugin uses a newer version of a package referenced in the host
var hostAssembly = this.pluginDependencyContext.HostDependencies.FirstOrDefault(h => h.DependencyName.Name == assemblyName.Name);
if (hostAssembly != null)
{
this.logger.VersionMismatch(assemblyName, hostAssembly.DependencyName);
}
return(ValueOrProceed <Assembly> .Proceed());
}
