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Working bridge class for room source messages and POST responses to server
This commit is contained in:
Neil Dorin
@@ -0,0 +1,336 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using Crestron.SimplSharp;
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using Crestron.SimplSharp.CrestronIO;
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using Crestron.SimplSharpPro;
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using Crestron.SimplSharp.Net.Http;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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using PepperDash.Core;
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using PepperDash.Essentials.Core;
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namespace PepperDash.Essentials
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{
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public class CotijaSystemController : Device
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{
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GenericHttpSseClient SseClient;
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CCriticalSection FileLock;
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CotijaConfig Config;
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HttpClient Client;
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Dictionary<string, Object> ActionDictionary;
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CTimer Heartbeat;
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CTimer Reconnect;
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string SystemUuid;
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public List<CotijaEssentialsHuddleSpaceRoomBridge> CotijaRooms { get; private set; }
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public CotijaSystemController(string key, string name, CotijaConfig config) : base(key, name)
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{
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Config = config;
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ActionDictionary = new Dictionary<string, Object>();
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CotijaRooms = new List<CotijaEssentialsHuddleSpaceRoomBridge>();
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CrestronConsole.AddNewConsoleCommand(ConnectSseClient, "InitializeHttpClient", "Initializes a new HTTP client connection to a specified URL", ConsoleAccessLevelEnum.AccessOperator);
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CrestronConsole.AddNewConsoleCommand(DisconnectSseClient, "CloseHttpClient", "Closes the active HTTP client", ConsoleAccessLevelEnum.AccessOperator);
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AddPostActivationAction(() => RegisterSystemToServer(null));
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}
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public void AddAction(string key, object action)
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{
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// This might blow up if an action with that key already exists
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ActionDictionary.Add(key, action);
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}
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public void RemoveAction(string key)
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{
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if (ActionDictionary.ContainsKey(key))
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ActionDictionary.Remove(key);
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}
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void ReconnectToServer(object o)
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{
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RegisterSystemToServer(null);
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}
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/// <summary>
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/// Registers the room with the server
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/// </summary>
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/// <param name="url">URL of the server, including the port number, if not 80. Format: "serverUrlOrIp:port"</param>
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void RegisterSystemToServer(string command)
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{
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try
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{
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string filePath = string.Format(@"\NVRAM\Program{0}\configurationFile.json", Global.ControlSystem.ProgramNumber);
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string postBody = null;
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if (string.IsNullOrEmpty(filePath))
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{
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Debug.Console(0, this, "Error reading file. No path specified.");
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return;
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}
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FileLock = new CCriticalSection();
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if (FileLock.TryEnter())
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{
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Debug.Console(1, this, "Reading Configuration File");
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postBody = File.ReadToEnd(filePath, Encoding.ASCII);
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Debug.Console(2, this, "{0}", postBody);
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FileLock.Leave();
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}
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if (string.IsNullOrEmpty(postBody))
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{
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Debug.Console(1, "Post Body is null or empty");
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}
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else
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{
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Client = new HttpClient();
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HttpClientRequest request = new HttpClientRequest();
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Client.Verbose = true;
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Client.KeepAlive = true;
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SystemUuid = Essentials.ConfigReader.ConfigObject.SystemUuid;
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string url = string.Format("http://{0}/api/system/join/{1}", Config.serverUrl, SystemUuid);
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request.Url.Parse(url);
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request.RequestType = RequestType.Post;
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request.Header.SetHeaderValue("Content-Type", "application/json");
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request.ContentString = postBody;
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Client.DispatchAsync(request, PostConnectionCallback);
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}
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}
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catch (Exception e)
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{
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Debug.Console(0, this, "Error Initilizing Room: {0}", e);
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}
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}
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/// <summary>
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/// Posts a message to the server from a room
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/// </summary>
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/// <param name="room">room from which the message originates</param>
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/// <param name="o">object to be serialized and sent in post body</param>
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public void PostToServer(EssentialsRoomBase room, JObject o)
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{
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if(Client == null)
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Client = new HttpClient();
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HttpClientRequest request = new HttpClientRequest();
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Client.Verbose = true;
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Client.KeepAlive = true;
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string url = string.Format("http://{0}/api/room/{1}", Config.serverUrl, string.Format("{0}-{1}", SystemUuid, room.Key));
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request.Url.Parse(url);
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request.RequestType = RequestType.Post;
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request.Header.SetHeaderValue("Content-Type", "application/json");
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request.ContentString = o.ToString();
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Client.DispatchAsync(request, PostConnectionCallback);
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}
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/// <summary>
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/// Disconnects the SSE Client and stops the heartbeat timer
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/// </summary>
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/// <param name="command"></param>
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void DisconnectSseClient(string command)
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{
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if(SseClient != null)
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SseClient.Disconnect();
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if (Heartbeat != null)
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{
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Heartbeat.Stop();
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Heartbeat = null;
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}
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}
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/// <summary>
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/// The callback that fires when we get a response from our registration attempt
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/// </summary>
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/// <param name="resp"></param>
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/// <param name="err"></param>
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void PostConnectionCallback(HttpClientResponse resp, HTTP_CALLBACK_ERROR err)
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{
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try
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{
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if (resp != null && resp.Code == 200)
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{
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if (SseClient == null)
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{
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ConnectSseClient(null);
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}
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}
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else
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{
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Debug.Console(0, this, "Unable to initialize SSE Client");
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}
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}
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catch (Exception e)
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{
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Debug.Console(1, this, "Error Initializeing SSE Client: {0}", e);
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}
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}
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/// <summary>
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/// Executes when we don't get a heartbeat message in time. Triggers reconnect.
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/// </summary>
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/// <param name="o"></param>
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void HeartbeatExpired(object o)
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{
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if (Heartbeat != null)
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{
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Heartbeat.Stop();
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Heartbeat = null;
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}
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// Start the reconnect timer
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Reconnect = new CTimer(ReconnectToServer, null, 5000, 5000);
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Reconnect.Reset(5000, 5000);
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}
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/// <summary>
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/// Connects the SSE Client
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/// </summary>
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/// <param name="o"></param>
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void ConnectSseClient(object o)
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{
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Debug.Console(0, this, "Initializing SSE Client.");
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if (SseClient == null)
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{
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SseClient = new GenericHttpSseClient(string.Format("{0}-SseClient", Key), Name);
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CommunicationGather LineGathered = new CommunicationGather(SseClient, "\x0d\x0a");
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LineGathered.LineReceived += new EventHandler<GenericCommMethodReceiveTextArgs>(LineGathered_LineReceived);
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}
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else
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{
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if (SseClient.IsConnected)
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{
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SseClient.Disconnect();
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}
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}
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string uuid = Essentials.ConfigReader.ConfigObject.SystemUuid;
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SseClient.Url = string.Format("http://{0}/api/system/stream/{1}", Config.serverUrl, uuid);
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SseClient.Connect();
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//Heartbeat = new CTimer(HeartbeatExpired, null, 20000, 20000);
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//Heartbeat.Reset(20000, 20000);
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}
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void LineGathered_LineReceived(object sender, GenericCommMethodReceiveTextArgs e)
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{
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//Debug.Console(1, this, "Received from Server: '{0}'", e.Text);
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if(e.Text.IndexOf("data:") > -1)
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{
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var message = e.Text.Substring(6);
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string roomId = null;
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Debug.Console(1, this, "Message: '{0}'", message);
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try
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{
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var messageObj = JObject.Parse(message);
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var type = messageObj["type"].Value<string>();
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if(type == "/system/hearbeat")
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{
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//Heartbeat.Reset(20000, 20000);
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}
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else if(type == "close")
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{
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SseClient.Disconnect();
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// Start the reconnect timer
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Reconnect = new CTimer(ConnectSseClient, null, 5000, 5000);
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Reconnect.Reset(5000, 5000);
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}
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else
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{
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// Check path against Action dictionary
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if (ActionDictionary.ContainsKey(type))
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{
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var action = ActionDictionary[type];
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if (action is Action<bool>)
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{
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var stateString = messageObj["content"]["state"].Value<string>();
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// Look for a button press event
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if(!string.IsNullOrEmpty(stateString))
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{
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#warning deal with held state later
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if (stateString == "held")
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return;
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(action as Action<bool>)(stateString == "true");
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}
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}
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else if (action is Action<ushort>)
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{
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(action as Action<ushort>)(messageObj["content"]["value"].Value<ushort>());
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}
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else if (action is Action<string>)
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{
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(action as Action<string>)(messageObj["content"]["value"].Value<string>());
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}
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else if (action is Action<SourceSelectMessageContent>)
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{
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(action as Action<SourceSelectMessageContent>)(messageObj["content"]
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.ToObject<SourceSelectMessageContent>());
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}
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}
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}
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}
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catch (Exception err)
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{
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Debug.Console(1, this, "Unable to parse message: {0}", err);
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}
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}
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}
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}
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}
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