Restore SEBPatch

SafeExamBrowser.Communication/Proxies/ServiceProxy.cs

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+/*
+ * Copyright (c) 2024 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using System;
+using SafeExamBrowser.Communication.Contracts;
+using SafeExamBrowser.Communication.Contracts.Data;
+using SafeExamBrowser.Communication.Contracts.Proxies;
+using SafeExamBrowser.Configuration.Contracts;
+using SafeExamBrowser.Logging.Contracts;
+
+namespace SafeExamBrowser.Communication.Proxies
+{
+	/// <summary>
+	/// Default implementation of the <see cref="IServiceProxy"/>, to be used for communication with the service application component.
+	/// </summary>
+	public class ServiceProxy : BaseProxy, IServiceProxy
+	{
+		public ServiceProxy(string address, IProxyObjectFactory factory, ILogger logger, Interlocutor owner) : base(address, factory, logger, owner)
+		{
+		}
+
+		public CommunicationResult RunSystemConfigurationUpdate()
+		{
+			try
+			{
+				var response = Send(SimpleMessagePurport.UpdateSystemConfiguration);
+				var success = IsAcknowledged(response);
+
+				if (success)
+				{
+					Logger.Debug("Service acknowledged system configuration update.");
+				}
+				else
+				{
+					Logger.Error($"Service did not acknowledge system configuration update! Received: {ToString(response)}.");
+				}
+
+				return new CommunicationResult(success);
+			}
+			catch (Exception e)
+			{
+				Logger.Error($"Failed to perform '{nameof(RunSystemConfigurationUpdate)}'", e);
+
+				return new CommunicationResult(false);
+			}
+		}
+
+		public CommunicationResult StartSession(ServiceConfiguration configuration)
+		{
+			try
+			{
+				var response = Send(new SessionStartMessage(configuration));
+				var success = IsAcknowledged(response);
+
+				if (success)
+				{
+					Logger.Debug("Service acknowledged session start.");
+				}
+				else
+				{
+					Logger.Error($"Service did not acknowledge session start! Received: {ToString(response)}.");
+				}
+
+				return new CommunicationResult(success);
+			}
+			catch (Exception e)
+			{
+				Logger.Error($"Failed to perform '{nameof(StartSession)}'", e);
+
+				return new CommunicationResult(false);
+			}
+		}
+
+		public CommunicationResult StopSession(Guid sessionId)
+		{
+			try
+			{
+				var response = Send(new SessionStopMessage(sessionId));
+				var success = IsAcknowledged(response);
+
+				if (success)
+				{
+					Logger.Debug("Service acknowledged session stop.");
+				}
+				else
+				{
+					Logger.Error($"Service did not acknowledge session stop! Received: {ToString(response)}.");
+				}
+
+				return new CommunicationResult(success);
+			}
+			catch (Exception e)
+			{
+				Logger.Error($"Failed to perform '{nameof(StopSession)}'", e);
+
+				return new CommunicationResult(false);
+			}
+		}
+	}
+}