//******************************************************************************************************//  ModbusConfigurationController.cs - Gbtc////  Copyright © 2018, Grid Protection Alliance.  All Rights Reserved.////  Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See//  the NOTICE file distributed with this work for additional information regarding copyright ownership.//  The GPA licenses this file to you under the MIT License (MIT), the "License"; you may not use this//  file except in compliance with the License. You may obtain a copy of the License at:////      http://opensource.org/licenses/MIT////  Unless agreed to in writing, the subject software distributed under the License is distributed on an//  "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the//  License for the specific language governing permissions and limitations.////  Code Modification History://  ----------------------------------------------------------------------------------------------------//  06/29/2018 - Stephen C. Wills//       Generated original version of source code.////****************************************************************************************************** using System.IO;using System.Web.Http;using GSF.Configuration;using GSF.IO; namespace ModbusAdapters{    public class ModbusConfigController : ApiController    {        #region [ Methods ]         [HttpPost]        [Authorize(Roles = "Administrator,Editor")]        public void SaveDeviceConfiguration([FromUri(Name = "id")] string acronym, [FromBody] string configuration)        {            File.WriteAllText(GetConfigurationCacheFileName(acronym), configuration);        }         [HttpGet]        [Authorize(Roles = "Administrator,Editor")]        public string LoadDeviceConfiguration([FromUri(Name = "id")] string acronym)        {            string fileName = GetConfigurationCacheFileName(acronym);            return File.Exists(fileName) ? File.ReadAllText(fileName) : "";        }         [HttpGet]        [Authorize(Roles = "Administrator,Editor")]        public string GetConfigurationCacheFileName([FromUri(Name = "id")] string acronym)        {            return Path.Combine(ConfigurationCachePath, $"{acronym}.configuration.json");        }         [HttpGet]        [Authorize(Roles = "Administrator,Editor")]        public string GetConfigurationCachePath()        {            return ConfigurationCachePath;        }         #endregion         #region [ Static ]         // Static Fields        private static string s_configurationCachePath;          // Static Methods         private static string ConfigurationCachePath        {            get            {                // This property will not change during system life-cycle so we cache if for future use                if (string.IsNullOrEmpty(s_configurationCachePath))                {                    // Define default configuration cache directory relative to path of host application                    s_configurationCachePath = string.Format("{0}{1}ConfigurationCache{1}", FilePath.GetAbsolutePath(""), Path.DirectorySeparatorChar);                     // Make sure configuration cache path setting exists within system settings section of config file                    ConfigurationFile configFile = ConfigurationFile.Current;                    CategorizedSettingsElementCollection systemSettings = configFile.Settings["systemSettings"];                    systemSettings.Add("ConfigurationCachePath", s_configurationCachePath, "Defines the path used to cache serialized phasor protocol configurations");                     // Retrieve configuration cache directory as defined in the config file                    s_configurationCachePath = FilePath.AddPathSuffix(systemSettings["ConfigurationCachePath"].Value);                     // Make sure configuration cache directory exists                    if (!Directory.Exists(s_configurationCachePath))                        Directory.CreateDirectory(s_configurationCachePath);                }                 return s_configurationCachePath;            }        }         #endregion    }}