[1121] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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[741] | 23 | using System.Collections.Generic;
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| 24 | using System.Linq;
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| 25 | using System.Text;
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[751] | 26 | using HeuristicLab.Hive.Contracts.BusinessObjects;
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[780] | 27 | using HeuristicLab.Hive.Contracts.Interfaces;
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| 28 | using HeuristicLab.Hive.Contracts;
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[823] | 29 | using HeuristicLab.Core;
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[1377] | 30 | using HeuristicLab.Hive.Server.DataAccess;
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[842] | 31 | using System.Resources;
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| 32 | using System.Reflection;
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[1001] | 33 | using HeuristicLab.Hive.JobBase;
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[1141] | 34 | using HeuristicLab.Hive.Server.Core.InternalInterfaces;
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[1154] | 35 | using System.Threading;
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[1445] | 36 | using HeuristicLab.PluginInfrastructure;
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[741] | 37 |
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| 38 | namespace HeuristicLab.Hive.Server.Core {
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[780] | 39 | /// <summary>
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| 40 | /// The ClientCommunicator manages the whole communication with the client
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| 41 | /// </summary>
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| 42 | public class ClientCommunicator: IClientCommunicator {
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[1154] | 43 | private static Dictionary<Guid, DateTime> lastHeartbeats =
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[1099] | 44 | new Dictionary<Guid,DateTime>();
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[783] | 45 |
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[1154] | 46 | private static ReaderWriterLockSlim heartbeatLock =
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[1158] | 47 | new ReaderWriterLockSlim(LockRecursionPolicy.SupportsRecursion);
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[1154] | 48 |
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[1369] | 49 | private IClientAdapter clientAdapter;
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| 50 | private IJobAdapter jobAdapter;
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| 51 | private IJobResultsAdapter jobResultAdapter;
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| 52 | private ILifecycleManager lifecycleManager;
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| 53 | private IInternalJobManager jobManager;
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| 54 | private IScheduler scheduler;
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[842] | 55 |
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[1121] | 56 | /// <summary>
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| 57 | /// Initialization of the Adapters to the database
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| 58 | /// Initialization of Eventhandler for the lifecycle management
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| 59 | /// Initialization of lastHearbeats Dictionary
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| 60 | /// </summary>
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[783] | 61 | public ClientCommunicator() {
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[970] | 62 | clientAdapter = ServiceLocator.GetClientAdapter();
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| 63 | jobAdapter = ServiceLocator.GetJobAdapter();
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[1011] | 64 | jobResultAdapter = ServiceLocator.GetJobResultsAdapter();
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[1088] | 65 | lifecycleManager = ServiceLocator.GetLifecycleManager();
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[1141] | 66 | jobManager = ServiceLocator.GetJobManager() as
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| 67 | IInternalJobManager;
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[1272] | 68 | scheduler = ServiceLocator.GetScheduler();
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[842] | 69 |
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[1133] | 70 | lifecycleManager.RegisterHeartbeat(
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| 71 | new EventHandler(lifecycleManager_OnServerHeartbeat));
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[783] | 72 | }
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| 73 |
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[1121] | 74 | /// <summary>
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| 75 | /// Check if online clients send their hearbeats
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| 76 | /// if not -> set them offline and check if they where calculating a job
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| 77 | /// </summary>
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| 78 | /// <param name="sender"></param>
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| 79 | /// <param name="e"></param>
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[1088] | 80 | void lifecycleManager_OnServerHeartbeat(object sender, EventArgs e) {
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| 81 | List<ClientInfo> allClients = new List<ClientInfo>(clientAdapter.GetAll());
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| 82 |
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| 83 | foreach (ClientInfo client in allClients) {
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[1096] | 84 | if (client.State != State.offline && client.State != State.nullState) {
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[1154] | 85 | heartbeatLock.EnterUpgradeableReadLock();
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| 86 |
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[1449] | 87 | if (!lastHeartbeats.ContainsKey(client.Id)) {
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[1096] | 88 | client.State = State.offline;
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| 89 | clientAdapter.Update(client);
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[1166] | 90 | foreach (Job job in jobAdapter.GetActiveJobsOf(client)) {
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[1160] | 91 | jobManager.ResetJobsDependingOnResults(job);
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| 92 | }
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[1096] | 93 | } else {
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[1449] | 94 | DateTime lastHbOfClient = lastHeartbeats[client.Id];
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[1154] | 95 |
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[1099] | 96 | TimeSpan dif = DateTime.Now.Subtract(lastHbOfClient);
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[1118] | 97 | // check if time between last hearbeat and now is greather than HEARTBEAT_MAX_DIF
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| 98 | if (dif.Seconds > ApplicationConstants.HEARTBEAT_MAX_DIF) {
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| 99 | // if client calculated jobs, the job must be reset
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| 100 | if (client.State == State.calculating) {
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| 101 | // check wich job the client was calculating and reset it
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[1166] | 102 | foreach (Job job in jobAdapter.GetActiveJobsOf(client)) {
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[1160] | 103 | jobManager.ResetJobsDependingOnResults(job);
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[1118] | 104 | }
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| 105 | }
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| 106 |
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| 107 | // client must be set offline
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| 108 | client.State = State.offline;
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| 109 | clientAdapter.Update(client);
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[1154] | 110 |
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| 111 | heartbeatLock.EnterWriteLock();
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[1449] | 112 | lastHeartbeats.Remove(client.Id);
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[1154] | 113 | heartbeatLock.ExitWriteLock();
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[1118] | 114 | }
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[1096] | 115 | }
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[1154] | 116 |
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| 117 | heartbeatLock.ExitUpgradeableReadLock();
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[1096] | 118 | } else {
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[1154] | 119 | heartbeatLock.EnterWriteLock();
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[1449] | 120 | if (lastHeartbeats.ContainsKey(client.Id))
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| 121 | lastHeartbeats.Remove(client.Id);
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[1154] | 122 | heartbeatLock.ExitWriteLock();
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[1096] | 123 | }
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[1088] | 124 | }
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| 125 | }
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| 126 |
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[741] | 127 | #region IClientCommunicator Members
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| 128 |
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[1121] | 129 | /// <summary>
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| 130 | /// Login process for the client
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| 131 | /// A hearbeat entry is created as well (login is the first hearbeat)
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| 132 | /// </summary>
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| 133 | /// <param name="clientInfo"></param>
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| 134 | /// <returns></returns>
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[791] | 135 | public Response Login(ClientInfo clientInfo) {
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[741] | 136 | Response response = new Response();
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| 137 |
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[1154] | 138 | heartbeatLock.EnterWriteLock();
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[1449] | 139 | if (lastHeartbeats.ContainsKey(clientInfo.Id)) {
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| 140 | lastHeartbeats[clientInfo.Id] = DateTime.Now;
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[1096] | 141 | } else {
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[1449] | 142 | lastHeartbeats.Add(clientInfo.Id, DateTime.Now);
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[1096] | 143 | }
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[1154] | 144 | heartbeatLock.ExitWriteLock();
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[1096] | 145 |
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[1340] | 146 | // todo: allClients legacy ?
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[1449] | 147 | ClientInfo client = clientAdapter.GetById(clientInfo.Id);
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[1096] | 148 | if (client != null && client.State != State.offline && client.State != State.nullState) {
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[1004] | 149 | response.Success = false;
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| 150 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_LOGIN_USER_ALLREADY_ONLINE;
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| 151 | return response;
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[842] | 152 | }
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[1096] | 153 | clientInfo.State = State.idle;
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[1004] | 154 | clientAdapter.Update(clientInfo);
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| 155 | response.Success = true;
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| 156 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_LOGIN_SUCCESS;
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[842] | 157 |
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[741] | 158 | return response;
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| 159 | }
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| 160 |
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[1121] | 161 | /// <summary>
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| 162 | /// The client has to send regulary heartbeats
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| 163 | /// this hearbeats will be stored in the heartbeats dictionary
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| 164 | /// check if there is work for the client and send the client a response if he should pull a job
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| 165 | /// </summary>
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| 166 | /// <param name="hbData"></param>
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| 167 | /// <returns></returns>
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[1365] | 168 | public ResponseHB ProcessHeartBeat(HeartBeatData hbData) {
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[783] | 169 | ResponseHB response = new ResponseHB();
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| 170 |
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[1369] | 171 | // check if the client is logged in
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[1096] | 172 | response.ActionRequest = new List<MessageContainer>();
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| 173 | if (clientAdapter.GetById(hbData.ClientId).State == State.offline ||
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| 174 | clientAdapter.GetById(hbData.ClientId).State == State.nullState) {
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| 175 | response.Success = false;
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| 176 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_USER_NOT_LOGGED_IN;
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| 177 | response.ActionRequest.Add(new MessageContainer(MessageContainer.MessageType.NoMessage));
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| 178 | return response;
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| 179 | }
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| 180 |
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[1369] | 181 | // save timestamp of this heartbeat
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[1154] | 182 | heartbeatLock.EnterWriteLock();
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[1088] | 183 | if (lastHeartbeats.ContainsKey(hbData.ClientId)) {
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| 184 | lastHeartbeats[hbData.ClientId] = DateTime.Now;
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| 185 | } else {
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| 186 | lastHeartbeats.Add(hbData.ClientId, DateTime.Now);
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| 187 | }
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[1154] | 188 | heartbeatLock.ExitWriteLock();
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[1088] | 189 |
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[783] | 190 | response.Success = true;
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[1272] | 191 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_HEARTBEAT_RECEIVED;
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[1369] | 192 | // check if client has a free core for a new job
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| 193 | // if true, ask scheduler for a new job for this client
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[1368] | 194 | if (hbData.FreeCores > 0 && scheduler.ExistsJobForClient(hbData))
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[783] | 195 | response.ActionRequest.Add(new MessageContainer(MessageContainer.MessageType.FetchJob));
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| 196 | else
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| 197 | response.ActionRequest.Add(new MessageContainer(MessageContainer.MessageType.NoMessage));
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| 198 |
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[1368] | 199 | if (hbData.JobProgress != null) {
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[1166] | 200 | List<Job> jobsOfClient = new List<Job>(jobAdapter.GetActiveJobsOf(clientAdapter.GetById(hbData.ClientId)));
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[1160] | 201 | if (jobsOfClient == null || jobsOfClient.Count == 0) {
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| 202 | response.Success = false;
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| 203 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_JOB_IS_NOT_BEEING_CALCULATED;
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| 204 | return response;
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| 205 | }
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| 206 |
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[1449] | 207 | foreach (KeyValuePair<Guid, double> jobProgress in hbData.JobProgress) {
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[1124] | 208 | Job curJob = jobAdapter.GetById(jobProgress.Key);
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[1449] | 209 | if (curJob.Client == null || curJob.Client.Id != hbData.ClientId) {
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[1160] | 210 | response.Success = false;
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| 211 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_JOB_IS_NOT_BEEING_CALCULATED;
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[1369] | 212 | } else if(curJob.State == State.finished) {
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| 213 | // another client has finished this job allready
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| 214 | // the client can abort it
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| 215 | response.ActionRequest.Add(new MessageContainer(MessageContainer.MessageType.AbortJob, curJob.Id));
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[1160] | 216 | } else {
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[1369] | 217 | // save job progress
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[1160] | 218 | curJob.Percentage = jobProgress.Value;
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| 219 | jobAdapter.Update(curJob);
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| 220 | }
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[1124] | 221 | }
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| 222 | }
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| 223 |
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[783] | 224 | return response;
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[780] | 225 | }
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[1121] | 226 |
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| 227 | /// <summary>
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| 228 | /// if the client asked to pull a job he calls this method
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| 229 | /// the server selects a job and sends it to the client
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| 230 | /// </summary>
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| 231 | /// <param name="clientId"></param>
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| 232 | /// <returns></returns>
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[1365] | 233 | public ResponseJob SendJob(Guid clientId) {
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[783] | 234 | ResponseJob response = new ResponseJob();
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[1154] | 235 |
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[1272] | 236 | Job job2Calculate = scheduler.GetNextJobForClient(clientId);
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| 237 | if (job2Calculate != null) {
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[1154] | 238 | response.Job = job2Calculate;
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| 239 | response.Success = true;
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| 240 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_JOB_PULLED;
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[1160] | 241 | } else {
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[1272] | 242 | response.Success = false;
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| 243 | response.Job = null;
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[1160] | 244 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_NO_JOBS_LEFT;
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[805] | 245 | }
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[941] | 246 | return response;
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[780] | 247 | }
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| 248 |
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[1374] | 249 | private ResponseResultReceived ProcessJobResult(Guid clientId,
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[1449] | 250 | Guid jobId,
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[1374] | 251 | byte[] result,
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[1133] | 252 | double percentage,
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[1374] | 253 | Exception exception,
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[1103] | 254 | bool finished) {
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[1374] | 255 |
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[838] | 256 | ResponseResultReceived response = new ResponseResultReceived();
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[1103] | 257 | ClientInfo client =
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| 258 | clientAdapter.GetById(clientId);
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| 259 |
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[1374] | 260 | Job job =
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[1103] | 261 | jobAdapter.GetById(jobId);
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[1133] | 262 |
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[1374] | 263 | if (job.Client == null) {
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[1133] | 264 | response.Success = false;
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| 265 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_JOB_IS_NOT_BEEING_CALCULATED;
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| 266 | return response;
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| 267 | }
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[1449] | 268 | if (job.Client.Id != clientId) {
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[1133] | 269 | response.Success = false;
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| 270 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_WRONG_CLIENT_FOR_JOB;
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| 271 | return response;
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| 272 | }
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[1004] | 273 | if (job == null) {
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| 274 | response.Success = false;
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[1133] | 275 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_NO_JOB_WITH_THIS_ID;
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[1004] | 276 | return response;
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| 277 | }
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[1369] | 278 | if (job.State == State.finished) {
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| 279 | response.Success = true;
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| 280 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_JOBRESULT_RECEIVED;
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[1374] | 281 | return response;
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[1369] | 282 | }
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[1004] | 283 | if (job.State != State.calculating) {
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| 284 | response.Success = false;
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| 285 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_WRONG_JOB_STATE;
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| 286 | return response;
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| 287 | }
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[1133] | 288 | job.SerializedJob = result;
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| 289 | job.Percentage = percentage;
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| 290 |
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[1004] | 291 | if (finished) {
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| 292 | job.State = State.finished;
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| 293 | jobAdapter.Update(job);
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| 294 |
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[1154] | 295 | client.State = State.idle;
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| 296 | clientAdapter.Update(client);
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| 297 |
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[1004] | 298 | List<JobResult> jobResults = new List<JobResult>(jobResultAdapter.GetResultsOf(job));
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[1374] | 299 | foreach (JobResult currentResult in jobResults)
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[1004] | 300 | jobResultAdapter.Delete(currentResult);
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| 301 | }
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| 302 |
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[1103] | 303 | JobResult jobResult =
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| 304 | new JobResult();
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| 305 | jobResult.Client = client;
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| 306 | jobResult.Job = job;
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| 307 | jobResult.Result = result;
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[1133] | 308 | jobResult.Percentage = percentage;
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[1103] | 309 | jobResult.Exception = exception;
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[1170] | 310 | jobResult.DateFinished = DateTime.Now;
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[1103] | 311 |
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[1133] | 312 | jobResultAdapter.Update(jobResult);
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| 313 | jobAdapter.Update(job);
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[1103] | 314 |
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[783] | 315 | response.Success = true;
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[929] | 316 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_JOBRESULT_RECEIVED;
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[1103] | 317 | response.JobId = jobId;
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[1137] | 318 | response.finished = finished;
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[783] | 319 |
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| 320 | return response;
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[780] | 321 | }
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[1096] | 322 |
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[1374] | 323 |
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[1121] | 324 | /// <summary>
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[1374] | 325 | /// the client can send job results during calculating
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| 326 | /// and will send a final job result when he finished calculating
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| 327 | /// these job results will be stored in the database
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| 328 | /// </summary>
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| 329 | /// <param name="clientId"></param>
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| 330 | /// <param name="jobId"></param>
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| 331 | /// <param name="result"></param>
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| 332 | /// <param name="exception"></param>
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| 333 | /// <param name="finished"></param>
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| 334 | /// <returns></returns>
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| 335 | public ResponseResultReceived StoreFinishedJobResult(Guid clientId,
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[1449] | 336 | Guid jobId,
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[1374] | 337 | byte[] result,
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| 338 | double percentage,
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| 339 | Exception exception) {
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| 340 |
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| 341 | return ProcessJobResult(clientId, jobId, result, percentage, exception, true);
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| 342 | }
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| 343 |
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| 344 |
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[1449] | 345 | public ResponseResultReceived ProcessSnapshot(Guid clientId, Guid jobId, byte[] result, double percentage, Exception exception) {
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[1374] | 346 | return ProcessJobResult(clientId, jobId, result, percentage, exception, false);
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| 347 | }
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| 348 |
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| 349 | /// <summary>
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[1121] | 350 | /// when a client logs out the state will be set
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| 351 | /// and the entry in the last hearbeats dictionary will be removed
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| 352 | /// </summary>
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| 353 | /// <param name="clientId"></param>
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[1154] | 354 | /// <returns></returns>
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[780] | 355 | public Response Logout(Guid clientId) {
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[786] | 356 | Response response = new Response();
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[1096] | 357 |
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[1154] | 358 | heartbeatLock.EnterWriteLock();
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[1096] | 359 | if (lastHeartbeats.ContainsKey(clientId))
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| 360 | lastHeartbeats.Remove(clientId);
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[1154] | 361 | heartbeatLock.ExitWriteLock();
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[1096] | 362 |
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[995] | 363 | ClientInfo client = clientAdapter.GetById(clientId);
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[902] | 364 | if (client == null) {
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[783] | 365 | response.Success = false;
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[929] | 366 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_LOGOUT_CLIENT_NOT_REGISTERED;
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[902] | 367 | return response;
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[783] | 368 | }
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[1127] | 369 | List<Job> allJobs = new List<Job>(jobAdapter.GetAll());
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| 370 | if (client.State == State.calculating) {
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| 371 | // check wich job the client was calculating and reset it
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| 372 | foreach (Job job in allJobs) {
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[1449] | 373 | if (job.Client.Id == client.Id) {
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[1141] | 374 | jobManager.ResetJobsDependingOnResults(job);
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[1127] | 375 | }
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| 376 | }
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| 377 | }
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| 378 |
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[902] | 379 | client.State = State.offline;
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[995] | 380 | clientAdapter.Update(client);
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[902] | 381 |
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| 382 | response.Success = true;
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[929] | 383 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_LOGOUT_SUCCESS;
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[902] | 384 |
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[783] | 385 | return response;
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[780] | 386 | }
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| 387 |
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[1369] | 388 | /// <summary>
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| 389 | /// If a client goes offline and restores a job he was calculating
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| 390 | /// he can ask the client if he still needs the job result
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| 391 | /// </summary>
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| 392 | /// <param name="jobId"></param>
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| 393 | /// <returns></returns>
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[1449] | 394 | public Response IsJobStillNeeded(Guid jobId) {
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[1369] | 395 | Response response = new Response();
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| 396 | Job job = jobAdapter.GetById(jobId);
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| 397 | if (job == null) {
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| 398 | response.Success = false;
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| 399 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_JOB_DOESNT_EXIST;
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| 400 | return response;
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| 401 | }
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| 402 | if (job.State == State.finished) {
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| 403 | response.Success = true;
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| 404 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_JOB_ALLREADY_FINISHED;
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| 405 | return response;
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| 406 | }
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| 407 | job.State = State.finished;
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| 408 | jobAdapter.Update(job);
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| 409 |
|
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| 410 | response.Success = true;
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| 411 | response.StatusMessage = ApplicationConstants.RESPONSE_COMMUNICATOR_SEND_JOBRESULT;
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| 412 | return response;
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| 413 | }
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| 414 |
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[1445] | 415 | public ResponsePlugin SendPlugins(List<PluginInfo> pluginList) {
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[1369] | 416 | throw new NotImplementedException();
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| 417 | }
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| 418 |
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[741] | 419 | #endregion
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| 420 | }
|
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| 421 | }
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