1 | #region License Information
|
---|
2 | /* HeuristicLab
|
---|
3 | * Copyright (C) 2002-2010 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 |
|
---|
22 | using System;
|
---|
23 | using System.Threading;
|
---|
24 | using HeuristicLab.Common;
|
---|
25 | using HeuristicLab.Services.Hive.Common;
|
---|
26 | using HeuristicLab.Services.Hive.Common.ServiceContracts;
|
---|
27 | using HeuristicLab.Services.Hive.Common.DataTransfer;
|
---|
28 | using System.Collections.Generic;
|
---|
29 |
|
---|
30 | namespace HeuristicLab.Clients.Hive {
|
---|
31 | internal class JobResultPoller {
|
---|
32 | private bool stopRequested { get; set; }
|
---|
33 | private AutoResetEvent waitHandle;
|
---|
34 | private Thread thread;
|
---|
35 |
|
---|
36 | private HiveJob hiveJob;
|
---|
37 | public HiveJob HiveJob {
|
---|
38 | get { return hiveJob; }
|
---|
39 | set { hiveJob = value; }
|
---|
40 | }
|
---|
41 |
|
---|
42 | private TimeSpan interval;
|
---|
43 | public TimeSpan Interval {
|
---|
44 | get { return interval; }
|
---|
45 | set { interval = value; }
|
---|
46 | }
|
---|
47 |
|
---|
48 | private bool isPolling;
|
---|
49 | public bool IsPolling {
|
---|
50 | get { return isPolling; }
|
---|
51 | set {
|
---|
52 | if (isPolling != value) {
|
---|
53 | isPolling = value;
|
---|
54 | OnIsPollingChanged();
|
---|
55 | }
|
---|
56 | }
|
---|
57 | }
|
---|
58 |
|
---|
59 | public JobResultPoller(HiveJob hiveJob, TimeSpan interval) {
|
---|
60 | this.isPolling = false;
|
---|
61 | this.hiveJob = hiveJob;
|
---|
62 | this.interval = interval;
|
---|
63 | }
|
---|
64 |
|
---|
65 | public void Start() {
|
---|
66 | stopRequested = false;
|
---|
67 | thread = new Thread(RunPolling);
|
---|
68 | thread.Start();
|
---|
69 | IsPolling = true;
|
---|
70 | }
|
---|
71 |
|
---|
72 | public void Stop() {
|
---|
73 | // use AutoResetEvent.Set instead if Thread.Interrupt because its much cleaner
|
---|
74 | stopRequested = true;
|
---|
75 | waitHandle.Set();
|
---|
76 | IsPolling = false;
|
---|
77 | thread = null;
|
---|
78 | }
|
---|
79 |
|
---|
80 | public void RunPolling() {
|
---|
81 | try {
|
---|
82 | waitHandle = new AutoResetEvent(false);
|
---|
83 | while (!stopRequested) {
|
---|
84 | OnPollingStarted();
|
---|
85 | FetchJobResults();
|
---|
86 | OnPollingFinished();
|
---|
87 | waitHandle.WaitOne(Interval);
|
---|
88 | }
|
---|
89 | waitHandle.Close();
|
---|
90 | }
|
---|
91 | catch (Exception e) {
|
---|
92 | OnExceptionOccured(e);
|
---|
93 | }
|
---|
94 | }
|
---|
95 |
|
---|
96 | private void FetchJobResults() {
|
---|
97 | using (Disposable<IHiveService> service = ServiceLocator.Instance.ServicePool.GetService()) {
|
---|
98 | IEnumerable<LightweightJob> response = service.Obj.GetLightweightChildJobs(hiveJob.Job.Id, true, true);
|
---|
99 | OnJobResultsReceived(response);
|
---|
100 | }
|
---|
101 | }
|
---|
102 |
|
---|
103 | public event EventHandler<EventArgs<IEnumerable<LightweightJob>>> JobResultsReceived;
|
---|
104 | private void OnJobResultsReceived(IEnumerable<LightweightJob> lightweightJobs) {
|
---|
105 | var handler = JobResultsReceived;
|
---|
106 | if (handler != null) handler(this, new EventArgs<IEnumerable<LightweightJob>>(lightweightJobs));
|
---|
107 | }
|
---|
108 |
|
---|
109 | public event EventHandler<EventArgs<Exception>> ExceptionOccured;
|
---|
110 | private void OnExceptionOccured(Exception e) {
|
---|
111 | var handler = ExceptionOccured;
|
---|
112 | if (handler != null) handler(this, new EventArgs<Exception>(e));
|
---|
113 | }
|
---|
114 |
|
---|
115 | public event EventHandler IsPollingChanged;
|
---|
116 | private void OnIsPollingChanged() {
|
---|
117 | var handler = IsPollingChanged;
|
---|
118 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
119 | }
|
---|
120 | public event EventHandler PollingStarted;
|
---|
121 | private void OnPollingStarted() {
|
---|
122 | var handler = PollingStarted;
|
---|
123 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
124 | }
|
---|
125 | public event EventHandler PollingFinished;
|
---|
126 | private void OnPollingFinished() {
|
---|
127 | var handler = PollingFinished;
|
---|
128 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
129 | }
|
---|
130 | }
|
---|
131 | }
|
---|