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source: branches/HiveStatistics/sources/HeuristicLab.Services.Hive/3.3/Manager/EventManager.cs @ 12861

Last change on this file since 12861 was 12861, checked in by ascheibe, 7 years ago

#2388 removed old code and switched to new code

File size: 4.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 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.Linq;
24using HeuristicLab.Services.Hive.DataAccess;
25using HeuristicLab.Services.Hive.DataAccess.Interfaces;
26
27namespace HeuristicLab.Services.Hive.Manager {
28  public class EventManager : IEventManager {
29    private const string SlaveTimeout = "Slave timed out.";
30    private IPersistenceManager PersistenceManager {
31      get { return ServiceLocator.Instance.PersistenceManager; }
32    }
33
34    public void Cleanup() {
35      var pm = PersistenceManager;
36      // same transactions as the old EventManager
37      pm.UseTransaction(() => {
38        SetTimeoutSlavesOffline(pm);
39        SetTimeoutTasksWaiting(pm);
40        DeleteObsoleteSlaves(pm);
41        pm.SubmitChanges();
42      });
43
44      pm.UseTransaction(() => {
45        FinishParentTasks(pm);
46        pm.SubmitChanges();
47      });
48    }
49
50    /// <summary>
51    /// Searches for slaves which are timed out, puts them and their task offline
52    /// </summary>
53    private void SetTimeoutSlavesOffline(IPersistenceManager pm) {
54      var slaveDao = pm.SlaveDao;
55      var slaves = slaveDao.GetOnlineSlaves();
56      foreach (var slave in slaves) {
57        if (!slave.LastHeartbeat.HasValue ||
58            (DateTime.Now - slave.LastHeartbeat.Value) >
59            HeuristicLab.Services.Hive.Properties.Settings.Default.SlaveHeartbeatTimeout) {
60          slave.SlaveState = SlaveState.Offline;
61        }
62      }
63    }
64
65    /// <summary>
66    /// Looks for parent tasks which have FinishWhenChildJobsFinished and set their state to finished
67    /// </summary>
68    private void FinishParentTasks(IPersistenceManager pm) {
69      var resourceDao = pm.ResourceDao;
70      var taskDao = pm.TaskDao;
71      var resourceIds = resourceDao.GetAll().Select(x => x.ResourceId).ToList();
72      var parentTasksToFinish = taskDao.GetParentTasks(resourceIds, 0, true);
73      foreach (var task in parentTasksToFinish) {
74        task.State = TaskState.Finished;
75        task.StateLogs.Add(new StateLog {
76          State = task.State,
77          SlaveId = null,
78          UserId = null,
79          Exception = string.Empty,
80          DateTime = DateTime.Now
81        });
82      }
83    }
84
85    /// <summary>
86    /// Looks for task which have not sent heartbeats for some time and reschedules them for calculation
87    /// </summary>
88    private void SetTimeoutTasksWaiting(IPersistenceManager pm) {
89      var taskDao = pm.TaskDao;
90      var tasks = taskDao.GetAll().Where(x => (x.State == TaskState.Calculating && (DateTime.Now - x.LastHeartbeat) > HeuristicLab.Services.Hive.Properties.Settings.Default.CalculatingJobHeartbeatTimeout)
91                                           || (x.State == TaskState.Transferring && (DateTime.Now - x.LastHeartbeat) > HeuristicLab.Services.Hive.Properties.Settings.Default.TransferringJobHeartbeatTimeout));
92      foreach (var task in tasks) {
93        task.State = TaskState.Waiting;
94        task.StateLogs.Add(new StateLog {
95          State = task.State,
96          SlaveId = null,
97          UserId = null,
98          Exception = SlaveTimeout,
99          DateTime = DateTime.Now
100        });
101        task.Command = null;
102      }
103    }
104
105    /// <summary>
106    /// Searches for slaves that are disposable and deletes them if they were offline for too long
107    /// </summary>
108    private void DeleteObsoleteSlaves(IPersistenceManager pm) {
109      var slaveDao = pm.SlaveDao;
110      var downtimeDao = pm.DowntimeDao;
111      var slaveIds = slaveDao.GetAll()
112        .Where(x => x.IsDisposable.GetValueOrDefault()
113                 && x.SlaveState == SlaveState.Offline
114                 && (DateTime.Now - x.LastHeartbeat) > Hive.Properties.Settings.Default.SweepInterval)
115        .Select(x => x.ResourceId)
116        .ToList();
117      foreach (var id in slaveIds) {
118        bool downtimesAvailable = downtimeDao.GetByResourceId(id).Any();
119        if (!downtimesAvailable) {
120          slaveDao.Delete(id);
121        }
122      }
123    }
124  }
125}
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