Esempio n. 1
0
        internal static IReadOnlyCollection <IOTelExtension> TryLoadPlugins(JsonConfigurationSource pluginsConfig)
        {
            if (pluginsConfig == null)
            {
                return(ArrayHelper.Empty <IOTelExtension>());
            }

            var targetFramework = FrameworkDescription.Instance.TargetFramework;

            Log.Debug("Executing plugins configuration: {0}", pluginsConfig);
            Log.Information("Trying to load plugins with target framework '{0}'.", targetFramework);

            string[] pluginFiles;

            try
            {
                // TODO: Here additional metadata could be loaded (eg: for security and integrity)
                // instead of just string path
                pluginFiles = pluginsConfig.GetValue <JToken>($"['{targetFramework}']").ToObject <string[]>();
            }
            catch (ArgumentException ex)
            {
                Log.Warning(ex, "Could not parse list of plugin paths. Invalid plugin configuration provided.");

                return(ArrayHelper.Empty <IOTelExtension>());
            }

            if (pluginFiles == null || !pluginFiles.Any())
            {
                Log.Information("Skipping plugins load. Could not find any plugins with target framework '{0}'.", targetFramework);

                return(ArrayHelper.Empty <IOTelExtension>());
            }

            var loadedPlugins = TryLoadPlugins(pluginFiles);

            Log.Information("Successfully loaded '{0}' plugin(s).", property: loadedPlugins.Count);

            return(loadedPlugins);
        }