private void SendMessage(string pluginId, PluginResponseMessage message)
{
var messageBroker = new PluginMessageBroker(pluginId, _sendMessageMethod);
messageBroker.SendMessage(message);
}
private PluginResponseMessage RegisterPlugin(
PluginMessage message,
IAssemblyLoadContext assemblyLoadContext)
{
var registerData = message.Data.ToObject<PluginRegisterData>();
var response = new PluginResponseMessage
{
MessageName = RegisterPluginMessageName
};
var pluginId = message.PluginId;
var registerDataTypeCacheKey = registerData.GetFullTypeCacheKey();
IPlugin plugin;
Type pluginType;
if (!_pluginTypeCache.TryGetValue(registerDataTypeCacheKey, out pluginType))
{
try
{
Assembly assembly;
if (!_assemblyCache.TryGetValue(registerData.AssemblyName, out assembly))
{
assembly = assemblyLoadContext.Load(registerData.AssemblyName);
}
pluginType = assembly.GetType(registerData.TypeName);
}
catch (Exception exception)
{
response.Error = exception.Message;
return response;
}
}
if (pluginType == null)
{
response.Error = Resources.FormatPlugin_TypeCouldNotBeLocatedInAssembly(
pluginId,
registerData.TypeName,
registerData.AssemblyName);
return response;
}
else
{
// We build out a custom plugin service provider to add a PluginMessageBroker and
// IAssemblyLoadContext to the potential services that can be used to construct an IPlugin.
var pluginServiceProvider = new PluginServiceProvider(
_hostServices,
messageBroker: new PluginMessageBroker(pluginId, _sendMessageMethod));
plugin = ActivatorUtilities.CreateInstance(pluginServiceProvider, pluginType) as IPlugin;
if (plugin == null)
{
response.Error = Resources.FormatPlugin_CannotProcessMessageInvalidPluginType(
pluginId,
pluginType.FullName,
typeof(IPlugin).FullName);
return response;
}
}
Debug.Assert(plugin != null);
_registeredPlugins[pluginId] = plugin;
response.Success = true;
return response;
}