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source: branches/OaaS/HeuristicLab.Services.Hive/3.3/Manager/EventManager.cs @ 8899

Last change on this file since 8899 was 8266, checked in by spimming, 12 years ago

#1888:

  • disabled some transactions since dtc is not supported in sql azure
  • settings in dataaccess updated
File size: 5.3 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Linq;
25using HeuristicLab.Services.Hive.DataAccess;
26using DT = HeuristicLab.Services.Hive.DataTransfer;
27
28
29namespace HeuristicLab.Services.Hive {
30  /// <summary>
31  /// This class offers methods for cleaning up offline slaves and task
32  /// </summary>
33  public class EventManager : IEventManager {
34    private IHiveDao dao {
35      get { return ServiceLocator.Instance.HiveDao; }
36    }
37    private IAuthorizationManager auth {
38      get { return ServiceLocator.Instance.AuthorizationManager; }
39    }
40    private ILogger log {
41      get { return LogFactory.GetLogger(this.GetType().Namespace); }
42    }
43    private DataAccess.ITransactionManager trans {
44      get { return ServiceLocator.Instance.TransactionManager; }
45    }
46
47    public void Cleanup() {
48      //TODO: enable transactions
49      //trans.UseTransaction(() => {
50      SetTimeoutSlavesOffline();
51      SetTimeoutTasksWaiting();
52      DeleteObsoleteSlaves();
53      //}, true);
54
55      //trans.UseTransaction(() => {
56      FinishParentTasks();
57      UpdateStatistics();
58      //}, false);
59    }
60
61    private void UpdateStatistics() {
62      var slaves = dao.GetSlaves(x => x.SlaveState == SlaveState.Calculating || x.SlaveState == SlaveState.Idle);
63
64      var stats = new DataTransfer.Statistics();
65      stats.TimeStamp = DateTime.Now;
66      var slaveStats = new List<DT.SlaveStatistics>();
67      foreach (var slave in slaves) {
68        slaveStats.Add(new DT.SlaveStatistics() {
69          SlaveId = slave.Id,
70          Cores = slave.Cores.HasValue ? slave.Cores.Value : 0,
71          FreeCores = slave.FreeCores.HasValue ? slave.FreeCores.Value : 0,
72          Memory = slave.Memory.HasValue ? slave.Memory.Value : 0,
73          FreeMemory = slave.FreeMemory.HasValue ? slave.FreeMemory.Value : 0,
74          CpuUtilization = slave.CpuUtilization
75        });
76      }
77      stats.SlaveStatistics = slaveStats;
78      //collecting user statistics slows down the db and results in timeouts.
79      //we have to find another way to deal with this. 
80      //until then the next line is commented out...
81      //stats.UserStatistics = dao.GetUserStatistics();
82      dao.AddStatistics(stats);
83    }
84
85    /// <summary>
86    /// Searches for slaves which are timed out, puts them and their task offline
87    /// </summary>
88    private void SetTimeoutSlavesOffline() {
89      var slaves = dao.GetSlaves(x => x.SlaveState != SlaveState.Offline);
90      foreach (DT.Slave slave in slaves) {
91        if (!slave.LastHeartbeat.HasValue || (DateTime.Now - slave.LastHeartbeat.Value) > HeuristicLab.Services.Hive.Properties.Settings.Default.SlaveHeartbeatTimeout) {
92          slave.SlaveState = DT.SlaveState.Offline;
93          dao.UpdateSlave(slave);
94        }
95      }
96    }
97
98    /// <summary>
99    /// Looks for parent tasks which have FinishWhenChildJobsFinished and set their state to finished
100    /// </summary>
101    private void FinishParentTasks() {
102      var parentTasksToFinish = dao.GetParentTasks(dao.GetResources(x => true).Select(x => x.Id), 0, true);
103      foreach (var task in parentTasksToFinish) {
104        dao.UpdateTaskState(task.Id, TaskState.Finished, null, null, string.Empty);
105      }
106    }
107
108    /// <summary>
109    /// Looks for task which have not sent heartbeats for some time and reschedules them for calculation
110    /// </summary>
111    private void SetTimeoutTasksWaiting() {
112      var tasks = dao.GetTasks(x => (x.State == TaskState.Calculating && (DateTime.Now - x.LastHeartbeat) > HeuristicLab.Services.Hive.Properties.Settings.Default.CalculatingJobHeartbeatTimeout)
113                               || (x.State == TaskState.Transferring && (DateTime.Now - x.LastHeartbeat) > HeuristicLab.Services.Hive.Properties.Settings.Default.TransferringJobHeartbeatTimeout));
114      foreach (var j in tasks) {
115        DT.Task task = dao.UpdateTaskState(j.Id, TaskState.Waiting, null, null, "Slave timed out.");
116        task.Command = null;
117        dao.UpdateTask(task);
118      }
119    }
120
121    /// <summary>
122    /// Searches for slaves that are disposable and deletes them if they were offline for too long
123    /// </summary>
124    private void DeleteObsoleteSlaves() {
125      var slaves = dao.GetSlaves(x => x.IsDisposable.GetValueOrDefault() && x.SlaveState == SlaveState.Offline && (DateTime.Now - x.LastHeartbeat) > HeuristicLab.Services.Hive.Properties.Settings.Default.SweepInterval);
126      foreach (DT.Slave slave in slaves) dao.DeleteSlave(slave.Id);
127    }
128  }
129}
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