利用WCF的双工通讯实现一个简单的心跳监控系统

http://www.cnblogs.com/zuowj/p/5761011.html

何为心跳监控系统？

故名思义，就是监控某个或某些个程序的运行状态，就好比医院里面的心跳监视仪一样，能够随时显示病人的心跳情况。

心跳监控的目的是什么？

与医院里面的心跳监视仪目的类似，监控程序运行状态，一旦出现问题（比如：一些自动运行的服务、程序等突然停止运行了），那么心跳监控系统就能“感知到”并及时的显示在监控界面上，同时可以通过微信、短信告之相关的人员，以便他们及时处理程序异常，从而避免一些自动运行的服务、程序等突然停止运行而造成的一系列损失

心跳监控系统实现的思路是怎样的？

核心技术：WCF的双工通讯

实现步骤：

1.定义WCF的服务契约接口以及回调接口，服务方法主要包括：Start（被监控的程序启动时调用，即通知监控系统，我已经启动了）、 Stop（被监控的程序停止时调用，即通知监控系统，我已经停止了）、ReportRunning（被监控的程序运行中定时调用，即通知监控系统，我是正常的并在运行中，同时还起到检测监控系统是否在运行的一个功能，一举两得），回调服务方法应有：Listen（这个是给监控系统主动去定时回调被监控的程序（心跳），如果被监控的程序能正常的返回状态，那么就是正常的，否则有可能已经“死了”，这时监控系统就需要按照预设指令作出相应的操作，比如：监控主界面显示异常的程序，同时发送异常通知消息给相关人员）

2.建立一个心跳监控系统Winform项目，并实现WCF服务，即集成实现WCF服务宿主程序，同时每一个WCF服务方法均需关联界面，即：程序启动了、停止了、运行中均会在界面实时显示出来或做一些实时统计；

3.其它被监控的程序（指自动运行的服务、程序等）需要集成实现WCF回调接口及开启WCF服务通讯的功能；

心跳监控系统的运行顺序是怎样的？如何保证监控方与被监控方实时不间断通讯？

运行顺序：

1.开启心跳监控系统（即：同时开启WCF服务宿主程序），确保监控服务正常运行；

2.开启其它被监控的程序，确保开启客户端与监控系统的WCF双工通讯服务正常；

注意：一定要先开启心跳监控系统，否则其它被监控的程序因无法与监控系统的WCF双工通讯服务正常连接而报错或多次尝试重连；

保证监控方与被监控方实时不间断通讯：

在保证按照上面所说的运行顺序依次开启心跳监控系统，再开启其它被监控的程序，正常建立一次通讯后，后续只要任何一方出现通讯中断，均会自动尝试重连（主要是客户端重连，心跳监控系统除非停止运行，否则不会中断，若因停止运行造成双方通讯中断，只需重启心跳监控系统即可）

通讯模式：

推模式：被监控的程序通过主动的调用WCF服务方法：Start、Stop、ReportRunning 向心跳监控系统告之运行状态，若通讯失败，则自动尝试重连，直至连接成功；

拉模式：心跳监控系统主动回调Listen方法，向被监控的程序索取运行状态，若通讯失败，则会在指定时间内多次重试回调客户端，若客户端在规定的时间范围内仍无法返回消息，则视为客户端异常，那么心跳监控系统则会进行异常的处理；

实现源代码：

ProgramMonitor.Core 类库项目：主要是定义WCF服务的相关接口以及实现回调的接口（因为每个客户端都需实现一遍回调接口，故统一实现，客户端集成后直接可以用，简化集成客户端的开发成本），心跳监控系统及需要被监控的程序均需要依赖该DLL；

ProgramMonitor WINFORM项目：心跳监控系统

整个解决方案如下图示：

注：由于源代码相对较多，故不再一一说明，只对重点的代码作解释

ProgramMonitor.Core

IListenService：（心跳监控WCF服务契约接口）

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.ServiceModel;

namespace ProgramMonitor.Core

{

[ServiceContract(Namespace = "http://www.zuowenjun.cn", SessionMode = SessionMode.Required, CallbackContract = typeof(IListenCall))]

public interface IListenService

{

[OperationContract(IsOneWay = true)]

void Start(ProgramInfo programInfo);

[OperationContract(IsOneWay = true)]

void Stop(string programId);

[OperationContract(IsOneWay = true)]

void ReportRunning(ProgramInfo programInfo);

}

IListenCall：（监听回调服务接口，主用被心跳监控系统调用）

using System;

using System.Collections.Generic;

using System.Linq;

using System.ServiceModel;

using System.Text;

namespace ProgramMonitor.Core

{

public interface IListenCall

{

[OperationContract]

int Listen(string programId);

}

ProgramInfo：（程序信息类，主要用于获取被监控程序的基本信息）

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.ServiceModel;

using System.Runtime.Serialization;

namespace ProgramMonitor.Core

{

[DataContract(Namespace = "http://www.zuowenjun.cn")]

public class ProgramInfo

{

public ProgramInfo()

{

}

[DataMember]

public string Id { get; internal set; }

[DataMember]

public string Name { get; set; }

[DataMember]

public string Version { get; set; }

[DataMember]

public string InstalledLocation { get; set; }

[DataMember]

public string Description { get; set; }

private int runState = -1;

/// <summary>

/// 运行状态，-1:表示停止，0表示启动，1表示运行中

/// </summary>

[DataMember]

public int RunState

{

get

{

return runState;

}

set

{

this.UpdateStateTime = DateTime.Now;

if (value < 0)

{

runState = -1;

this.StopTime = this.UpdateStateTime;

}

else if (value == 0)

{

runState = 0;

this.StartTime = this.UpdateStateTime;

}

else

{

runState = 1;

}

[DataMember]

public DateTime UpdateStateTime { get; private set; }

[DataMember]

public DateTime StartTime { get; private set; }

[DataMember]

public DateTime StopTime { get; private set; }

}

ListenClient：（监听客户端类，实现WCF回调服务接口，主要用于被监控的程序）

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.IO;

using System.Linq;

using System.Security.Cryptography;

using System.ServiceModel;

using System.ServiceModel.Description;

using System.Text;

namespace ProgramMonitor.Core

{

public class ListenClient : IListenCall

{

private static object syncObject = new object();

private static ListenClient instance = null;

private ProgramInfo programInfo = null;

private string serviceHostAddr = null;

private int autoReportRunningInterval = 300;

private DuplexChannelFactory<IListenService> listenServiceFactory = null;

private IListenService proxyListenService = null;

private System.Timers.Timer reportRunningTimer = null;

private ListenClient(ProgramInfo programInfo, string serviceHostAddr = null, int autoReportRunningInterval = 300)

{

programInfo.Id = CreateProgramId();

this.programInfo = programInfo;

this.serviceHostAddr = serviceHostAddr;

if (autoReportRunningInterval >= 60) //最低1分钟的间隔

{

this.autoReportRunningInterval = autoReportRunningInterval;

}

BuildAutoReportRunningTimer();

}

private void BuildAutoReportRunningTimer()

{

reportRunningTimer = new System.Timers.Timer(autoReportRunningInterval * 1000);

reportRunningTimer.Elapsed += (s, e) =>

{

ReportRunning();

};

}

private void BuildListenClientService()

{

if (listenServiceFactory == null)

{

if (string.IsNullOrEmpty(serviceHostAddr))

{

serviceHostAddr = System.Configuration.ConfigurationManager.AppSettings["ServiceHostAddr"];

}

InstanceContext instanceContext = new InstanceContext(instance);

NetTcpBinding binding = new NetTcpBinding();

binding.ReceiveTimeout = new TimeSpan(0, 5, 0);

binding.SendTimeout = new TimeSpan(0, 5, 0);

Uri baseAddress = new Uri(string.Format("net.tcp://{0}/ListenService", serviceHostAddr));

listenServiceFactory = new DuplexChannelFactory<IListenService>(instanceContext, binding, new EndpointAddress(baseAddress));

}

proxyListenService = listenServiceFactory.CreateChannel();

}

public static ListenClient GetInstance(ProgramInfo programInfo, string serviceHostAddr = null, int autoReportRunningInterval = 300)

{

if (instance == null)

{

lock (syncObject)

{

if (instance == null)

{

instance = new ListenClient(programInfo, serviceHostAddr, autoReportRunningInterval);

instance.BuildListenClientService();

}

return instance;

}

public void ReportStart()

{

proxyListenService.Start(programInfo);

reportRunningTimer.Start();

}

public void ReportStop()

{

proxyListenService.Stop(programInfo.Id);

reportRunningTimer.Stop();

}

public void ReportRunning()

{

try

{

proxyListenService.ReportRunning(programInfo);

}

catch

{

BuildListenClientService();

}

int IListenCall.Listen(string programId)

{

if (programInfo.Id.Equals(programId, StringComparison.OrdinalIgnoreCase))

{

if (programInfo.RunState >= 0)

{

return 1;

}

return -1;

}

private string CreateProgramId()

{

Process currProcess = Process.GetCurrentProcess();

int procCount = Process.GetProcessesByName(currProcess.ProcessName).Length;

string currentProgramPath = currProcess.MainModule.FileName;

return GetMD5HashFromFile(currentProgramPath) + "_" + procCount;

}

private string GetMD5HashFromFile(string fileName)

{

try

{

byte[] hashData = null;

using (FileStream fs = new FileStream(fileName, System.IO.FileMode.Open, FileAccess.Read))

{

MD5 md5 = new MD5CryptoServiceProvider();

hashData = md5.ComputeHash(fs);

fs.Close();

}

StringBuilder sb = new StringBuilder();

for (int i = 0; i < hashData.Length; i++)

{

sb.Append(hashData[i].ToString("x2"));

}

return sb.ToString();

}

catch (Exception ex)

{

throw new Exception("GetMD5HashFromFile Error:" + ex.Message);

}

这里特别说一下：CreateProgramId方法，因为心跳监控系统主要是依据ProgramId来识别每个不同的程序，故ProgramId 非常重要，而我这里采用的是文件的 MD5值+进程数作为ProgramId，有些人可能要问，为什么要加进程数呢？原因很简单，因为有些程序是允许开启多个的实例的，如果不加进程数，那么心跳监控系统就无法识别多个同一个程序到底是哪个。

ProgramMonitor

ListenService：（WCF心跳监控服务接口实现类）

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using ProgramMonitor.Core;

using System.ServiceModel;

namespace ProgramMonitor.Service

{

[ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Reentrant, InstanceContextMode = InstanceContextMode.PerCall)]

public class ListenService : IListenService

{

public void Start(ProgramInfo programInfo)

{

var listenCall = OperationContext.Current.GetCallbackChannel<IListenCall>();

Common.SaveProgramStartInfo(programInfo, listenCall);

}

public void Stop(string programId)

{

Common.SaveProgramStopInfo(programId);

}

public void ReportRunning(ProgramInfo programInfo)

{

var listenCall = OperationContext.Current.GetCallbackChannel<IListenCall>();

Common.SaveProgramRunningInfo(programInfo, listenCall);

}

Common:（通用业务逻辑类，主要用于WCF与UI实时沟通与联动）

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using ProgramMonitor.Core;

using System.Collections.Concurrent;

using System.Timers;

using System.Threading;

using Timer = System.Timers.Timer;

using ProgramMonitor.Service;

using System.Data.SqlClient;

using log4net;

namespace ProgramMonitor

{

public static class Common

{

public static ConcurrentDictionary<string, ProgramInfo> ProgramInfos = null;

public static ConcurrentDictionary<string, IListenCall> ListenCalls = null;

public static ConcurrentBag<string> ManualStopProgramIds = null;

public static System.Timers.Timer loadTimer = null;

public static Timer listenTimer = null;

public static SynchronizationContext SyncContext = null;

public static Action<ProgramInfo, bool> RefreshListView;

public static Action<ProgramInfo, bool> RefreshTabControl;

public static int ClearInterval = 5;

public static int ListenInterval = 2;

public static bool Listening = false;

public static string DbConnString = null;

public static string[] NoticePhoneNos = null;

public static string NoticeWxUserIds = null;

public static ILog Logger = LogManager.GetLogger("ProgramMonitor");

public const string SqlProviderName = "System.Data.SqlClient";

public static void SaveProgramStartInfo(ProgramInfo programInfo, IListenCall listenCall)

{

programInfo.RunState = 0;

ProgramInfos.AddOrUpdate(programInfo.Id, programInfo, (key, value) => programInfo);

ListenCalls.AddOrUpdate(programInfo.Id, listenCall, (key, value) => listenCall);

RefreshListView(programInfo, false);

RefreshTabControl(programInfo, true);

WriteLog(string.Format("程序名：{0}，版本：{1}，已启动运行", programInfo.Name, programInfo.Version), false);

}

public static void SaveProgramStopInfo(string programId)

{

ProgramInfo programInfo;

if (ProgramInfos.TryGetValue(programId, out programInfo))

{

programInfo.RunState = -1;

RefreshListView(programInfo, false);

IListenCall listenCall = null;

ListenCalls.TryRemove(programId, out listenCall);

RefreshTabControl(programInfo, true);

}

WriteLog(string.Format("程序名：{0}，版本：{1}，已停止运行", programInfo.Name, programInfo.Version), false);

}

public static void SaveProgramRunningInfo(ProgramInfo programInfo, IListenCall listenCall)

{

if (!ProgramInfos.ContainsKey(programInfo.Id) || !ListenCalls.ContainsKey(programInfo.Id))

{

SaveProgramStartInfo(programInfo, listenCall);

}

programInfo.RunState = 1;

RefreshTabControl(programInfo, true);

WriteLog(string.Format("程序名：{0}，版本：{1}，正在运行中", programInfo.Name, programInfo.Version), false);

}

public static void AutoLoadProgramInfos()

{

if (loadTimer == null)

{

loadTimer = new Timer(1 * 60 * 1000);

loadTimer.Elapsed += delegate(object sender, ElapsedEventArgs e)

{

var timer = sender as Timer;

try

{

timer.Stop();

foreach (var item in ProgramInfos)

{

var programInfo = item.Value;

RefreshListView(programInfo, false);

}

finally

{

if (Listening)

{

timer.Start();

}

};

}

else

{

loadTimer.Interval = 1 * 60 * 1000;

}

loadTimer.Start();

}

public static void AutoListenPrograms()

{

if (listenTimer == null)

{

listenTimer = new Timer(ListenInterval * 60 * 1000);

listenTimer.Elapsed += delegate(object sender, ElapsedEventArgs e)

{

var timer = sender as Timer;

try

{

timer.Stop();

foreach (var item in ListenCalls)

{

bool needUpdateStatInfo = false;

var listenCall = item.Value;

var programInfo = ProgramInfos[item.Key];

int oldRunState = programInfo.RunState;

try

{

programInfo.RunState = listenCall.Listen(programInfo.Id);

}

catch

{

if (programInfo.RunState != -1)

{

programInfo.RunState = -1;

needUpdateStatInfo = true;

}

if (programInfo.RunState == -1 && programInfo.StopTime.AddMinutes(5) < DateTime.Now) //如果停了5分钟，则发一次短信

{

SendNoticeSms(programInfo);

SendNoticeWeiXin(programInfo);

programInfo.RunState = -1;//重新刷新状态

}

if (oldRunState != programInfo.RunState)

{

needUpdateStatInfo = true;

WriteLog(string.Format("程序名：{0}，版本：{1}，运行状态变更为：{2}", programInfo.Name, programInfo.Version,programInfo.RunState), false);

}

RefreshTabControl(programInfo, needUpdateStatInfo);

}

finally

{

if (Listening)

{

timer.Start();

}

};

}

else

{

listenTimer.Interval = ListenInterval * 60 * 1000;

}

listenTimer.Start();

}

public static void SendNoticeSms(ProgramInfo programInfo)

{

if (NoticePhoneNos == null || NoticePhoneNos.Length <= 0) return;

using (DataAccess da = new DataAccess(Common.DbConnString, Common.SqlProviderName))

{

da.UseTransaction();

foreach (string phoneNo in NoticePhoneNos)

{

var parameters = da.ParameterHelper.AddParameter("@Mbno", phoneNo)

.AddParameter("@Msg", string.Format("程序名：{0}，版本：{1}，安装路径：{2}，已停止运行了，请尽快处理！",

programInfo.Name, programInfo.Version, programInfo.InstalledLocation))

.AddParameter("@SendTime", DateTime.Now)

.AddParameter("@KndType", "监控异常通知")

.ToParameterArray();

da.ExecuteCommand("insert into OutBox(Mbno,Msg,SendTime,KndType) values(@Mbno,@Msg,@SendTime,@KndType)", paramObjs: parameters);

}

da.Commit();

WriteLog(string.Format("程序名：{0}，版本：{1}，已停止运行超过5分钟，成功发送短信通知到：{2}",

programInfo.Name, programInfo.Version, string.Join(",", NoticePhoneNos)), false);

}

public static void SendNoticeWeiXin(ProgramInfo programInfo)

{

if (string.IsNullOrEmpty(NoticeWxUserIds)) return;

string msg = string.Format("程序名：{0}，版本：{1}，安装路径：{2}，已停止运行了，请尽快处理！",

programInfo.Name, programInfo.Version, programInfo.InstalledLocation);

var wx = new WeChat();

var result = wx.SendMessage(NoticeWxUserIds, msg);

if (result["errmsg"].ToString().Equals("ok", StringComparison.OrdinalIgnoreCase))

{

WriteLog(string.Format("程序名：{0}，版本：{1}，已停止运行超过5分钟，成功发送微信通知到：{2}", programInfo.Name, programInfo.Version,NoticeWxUserIds), false);

}

public static void BuildConnectionString(string server, string db, string uid, string pwd)

{

SqlConnectionStringBuilder connStrBuilder = new SqlConnectionStringBuilder();

connStrBuilder.DataSource = server;

connStrBuilder.InitialCatalog = db;

connStrBuilder.UserID = uid;

connStrBuilder.Password = pwd;

connStrBuilder.IntegratedSecurity = false;

connStrBuilder.ConnectTimeout = 15;

DbConnString = connStrBuilder.ToString();

}

public static void WriteLog(string msg, bool isError = false)

{

if (isError)

{

Logger.Error(msg);

}

else

{

Logger.Info(msg);

}

FrmMain：（心跳监控系统窗体类）

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

using ProgramMonitor.Core;

using ProgramMonitor.Service;

using System;

using System.Collections.Concurrent;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.ServiceModel;

using System.ServiceModel.Description;

using System.Text;

using System.Threading;

using System.Windows.Forms;

namespace ProgramMonitor

{

public partial class FrmMain : Form

{

private ServiceHost serviceHost = null;

public FrmMain()

{

InitializeComponent();

tabControl1.SizeMode = TabSizeMode.Fixed;

tabControl1.ItemSize = new Size(0, 1);

#if (DEBUG)

btnTestSend.Visible = true;

#else

btnTestSend.Visible = false;

#endif

Common.SyncContext = SynchronizationContext.Current;

Common.ProgramInfos = new ConcurrentDictionary<string, ProgramInfo>();

Common.ListenCalls = new ConcurrentDictionary<string, IListenCall>();

Common.ManualStopProgramIds = new ConcurrentBag<string>();

Common.RefreshListView = RefreshListView;

Common.RefreshTabControl = RefreshTabControl;

}

#region 自定义方法区域

private void RefreshListView(ProgramInfo programInfo, bool needUpdateStatInfo)

{

Common.SyncContext.Post(o =>

{

string listViewItemKey = string.Format("lvItem_{0}", programInfo.Id);

if (!listView1.Items.ContainsKey(listViewItemKey))

{

var lstItem = listView1.Items.Add(listViewItemKey, programInfo.Name, 0);

lstItem.Name = listViewItemKey;

lstItem.Tag = programInfo.Id;

lstItem.SubItems.Add(programInfo.Version);

lstItem.SubItems.Add(programInfo.InstalledLocation);

lstItem.ToolTipText = programInfo.Description;

if (needUpdateStatInfo)

{

UpdateProgramListenStatInfo();

}

else

{

if (!Common.ListenCalls.ContainsKey(programInfo.Id) && programInfo.RunState == -1 && Common.ClearInterval > 0

&& programInfo.StopTime.AddMinutes(Common.ClearInterval) < DateTime.Now) //当属于正常关闭的程序在指定时间后从监控列表中移除

{

RemoveListenItem(programInfo.Id);

}

}, null);

}

private void RefreshTabControl(ProgramInfo programInfo, bool needUpdateStatInfo)

{

Common.SyncContext.Post(o =>

{

string tabPgName = string.Format("tabpg_{0}", programInfo.Id);

string msgCtrlName = string.Format("{0}_MsgText", tabPgName);

if (!tabControl1.TabPages.ContainsKey(tabPgName))

{

RichTextBox rchTextBox = new RichTextBox();

rchTextBox.Name = msgCtrlName;

rchTextBox.Dock = DockStyle.Fill;

rchTextBox.ReadOnly = true;

AppendTextToRichTextBox(rchTextBox, programInfo);

var tabPg = new TabPage();

tabPg.Name = tabPgName;

tabPg.Controls.Add(rchTextBox);

tabControl1.TabPages.Add(tabPg);

}

else

{

var tabPg = tabControl1.TabPages[tabPgName];

var rchTextBox = tabPg.Controls[msgCtrlName] as RichTextBox;

AppendTextToRichTextBox(rchTextBox, programInfo);

}

if (needUpdateStatInfo)

{

UpdateProgramListenStatInfo();

}

}, null);

}

private void UpdateProgramListenStatInfo()

{

int runCount = Common.ProgramInfos.Count(p => p.Value.RunState >= 0);

labRunCount.Text = string.Format("{0}个", runCount);

labStopCount.Text = string.Format("{0}个", Common.ProgramInfos.Count - runCount);

foreach (ListViewItem lstItem in listView1.Items)

{

string programId = lstItem.Tag.ToString();

if (Common.ProgramInfos[programId].RunState == -1)

{

lstItem.ForeColor = Color.Red;

}

else

{

lstItem.ForeColor = Color.Black;

}

private void RemoveListenItem(string programInfoId)

{

ProgramInfo programInfo = Common.ProgramInfos[programInfoId];

listView1.Items.RemoveByKey(string.Format("lvItem_{0}", programInfo.Id));

tabControl1.TabPages.RemoveByKey(string.Format("tabpg_{0}", programInfo.Id));

Common.ProgramInfos.TryRemove(programInfo.Id, out programInfo);

IListenCall listenCall = null;

Common.ListenCalls.TryRemove(programInfoId, out listenCall);

UpdateProgramListenStatInfo();

}

private void AppendTextToRichTextBox(RichTextBox rchTextBox, Core.ProgramInfo programInfo)

{

Color msgColor = Color.Black;

string lineMsg = string.Format("{0:yyyy-MM-dd HH:mm}\t{1}({2})\t{3} \n", DateTime.Now, programInfo.Name, programInfo.Version, GetRunStateString(programInfo.RunState, out msgColor));

rchTextBox.SelectionColor = msgColor;

rchTextBox.SelectionStart = rchTextBox.Text.Length;

rchTextBox.AppendText(lineMsg);

rchTextBox.SelectionLength = rchTextBox.Text.Length;

if(rchTextBox.Lines.Length>1000)

{

}

private string GetRunStateString(int runState, out Color msgColor)

{

if (runState < 0)

{

msgColor = Color.Red;

return "程序已停止运行";

}

else if (runState == 0)

{

msgColor = Color.Blue;

return "程序已启动运行";

}

else

{

msgColor = Color.Black;

return "程序已在运行中";

}

private void StartListenService()

{

if (serviceHost == null)

{

string serviceHostAddr = System.Configuration.ConfigurationManager.AppSettings["ServiceHostAddr"];

string serviceMetaHostAddr = System.Configuration.ConfigurationManager.AppSettings["ServiceMetaHostAddr"];

serviceHost = new ServiceHost(typeof(ListenService));

NetTcpBinding binding = new NetTcpBinding();

binding.ReceiveTimeout = new TimeSpan(0, 5, 0);

binding.SendTimeout = new TimeSpan(0, 5, 0);

serviceHost.AddServiceEndpoint(typeof(IListenService), binding, string.Format("net.tcp://{0}/ListenService", serviceHostAddr));

if (serviceHost.Description.Behaviors.Find<ServiceMetadataBehavior>() == null)

{

ServiceMetadataBehavior behavior = new ServiceMetadataBehavior();

behavior.HttpGetEnabled = true;

behavior.HttpGetUrl = new Uri(string.Format("http://{0}/ListenService/metadata", serviceMetaHostAddr));

serviceHost.Description.Behaviors.Add(behavior);

}

serviceHost.Opened += (s, arg) =>

{

SetUIStyle("S");

Common.Listening = true;

Common.AutoLoadProgramInfos();

Common.AutoListenPrograms();

};

serviceHost.Closed += (s, arg) =>

{

SetUIStyle("C");

Common.loadTimer.Stop();

Common.listenTimer.Stop();

Common.Listening = false;

};

}

serviceHost.Open();

}

private void StopListenService()

{

try

{

if (serviceHost != null && serviceHost.State != CommunicationState.Closed)

{

serviceHost.Close();

}

serviceHost = null;

}

catch

{ }

}

private void SetUIStyle(string state)

{

if (state == "S")

{

labSericeState.BackColor = Color.Green;

txtRefreshInterval.Enabled = false;

txtListenInterval.Enabled = false;

btnExec.Tag = "C";

btnExec.Text = "停止监控";

panel1.Enabled = false;

panel2.Enabled = false;

}

else

{

labSericeState.BackColor = Color.Red;

txtRefreshInterval.Enabled = true;

txtListenInterval.Enabled = true;

btnExec.Tag = "S";

btnExec.Text = "开启监控";

panel1.Enabled = true;

panel2.Enabled = true;

}

private void InitListViewStyle()

{

ImageList imgList = new ImageList();

imgList.ImageSize = new Size(32, 32);

imgList.Images.Add(Properties.Resources.monitor);

listView1.SmallImageList = imgList;

listView1.LargeImageList = imgList;

listView1.View = View.Details;

listView1.GridLines = false;

listView1.FullRowSelect = true;

listView1.Columns.Add("程序名称", -2);

listView1.Columns.Add("版本");

listView1.Columns.Add("运行路径");

int avgWidth = listView1.Width / 3;

}

private void InitNoticeSetting()

{

if (chkSendSms.Checked)

{

bool dbConnected = false;

Common.BuildConnectionString(txtServer.Text, txtDb.Text, txtUID.Text, txtPwd.Text);

using (var da = new DataAccess(Common.DbConnString, Common.SqlProviderName))

{

try

{

da.ExecuteScalar<DateTime>("select getdate()");

dbConnected = true;

}

catch (Exception ex)

{

MessageBox.Show("数据库测试连接失败，原因：" + ex.Message);

}

if (dbConnected)

{

if (txtPhoneNos.Text.Trim().IndexOf(",") >= 0)

{

Common.NoticePhoneNos = txtPhoneNos.Text.Trim().Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);

}

else

{

Common.NoticePhoneNos = new[] { txtPhoneNos.Text.Trim() };

}

else

{

Common.NoticePhoneNos = null;

}

if (chkSendWx.Checked)

{

Common.NoticeWxUserIds = txtWxUIDs.Text.Trim();

}

else

{

Common.NoticeWxUserIds = null;

}

private bool IsRightClickSelectedItem(Point point)

{

foreach (ListViewItem item in listView1.SelectedItems)

{

if (item.Bounds.Contains(point))

{

return true;

}

return false;

}

#endregion

private void btnExec_Click(object sender, EventArgs e)

{

string state = (btnExec.Tag ?? "S").ToString();

if (state == "S")

{

InitNoticeSetting();

Common.ClearInterval = int.Parse(txtRefreshInterval.Text);

Common.ListenInterval = int.Parse(txtListenInterval.Text);

StartListenService();

}

else

{

StopListenService();

}

private void listView1_SelectedIndexChanged(object sender, EventArgs e)

{

if (listView1.SelectedItems.Count <= 0) return;

string programId = listView1.SelectedItems[0].Tag.ToString();

string tabPgName = string.Format("tabpg_{0}", programId);

if (tabControl1.TabPages.ContainsKey(tabPgName))

{

tabControl1.SelectedTab = tabControl1.TabPages[tabPgName];

}

else

{

MessageBox.Show("未找到相应的程序监控记录！");

listView1.SelectedItems[0].ForeColor = Color.Red;

}

private void FrmMain_Load(object sender, EventArgs e)

{

InitListViewStyle();

}

private void FrmMain_FormClosing(object sender, FormClosingEventArgs e)

{

if (MessageBox.Show("您确定要退出吗？退出后将无法正常监控各程序的运行状况", "退出提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.Cancel)

{

e.Cancel = true;

return;

}

StopListenService();

}

private void btnTestSend_Click(object sender, EventArgs e)

{

var wx = new WeChat();

var msg = wx.SendMessage("kyezuo", "测试消息，有程序停止运行了，赶紧处理！");

MessageBox.Show(msg["errmsg"].ToString());

}

private void listView1_MouseUp(object sender, MouseEventArgs e)

{

if (e.Button == MouseButtons.Right && IsRightClickSelectedItem(e.Location))

{

ctxMuPop.Show(listView1, e.Location);

}

private void removeToolStripMenuItem_Click(object sender, EventArgs e)

{

if (listView1.SelectedItems.Count <= 0) return;

string programId = listView1.SelectedItems[0].Tag.ToString();

if (Common.ProgramInfos[programId].RunState != -1)

{

MessageBox.Show("只有被监控的程序处于已停止状态的监控项才能移除，除外情况请务必保持正常！");

return;

}

RemoveListenItem(programId);

}

窗体类中主要是用到了几个更新UI上控件信息的方法以及开启、关闭WCF服务的方法，很简单，一看就明白，无需多讲。

FrmMain.Designer.cs：（Form窗体设计类，系统自动生成的，再此贴出是便于大家可以直接COPY到自己的代码中直接用）

被监控的客户端程序集成WCF监听客户端很简单，只需引用ProgramMonitor.Core，然后实例化ListenClient，最后就可以通过该ListenClient与心跳监控系统进行双工通讯，在此就不贴出源代码了。

上述代码中还有用到两个类：

DataAccess：数据访问类，这个我之前的文章有介绍，详见：DataAccess通用数据库访问类，简单易用，功能强悍

WeChat：微信企业号发送消息类，注意是微信企业号，不是公众号，这里我也贴出源代码来，供大家了解：

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Net;

using System.Text;

using System.Web;

namespace ProgramMonitor.Service

{

public class WeChat

{

private readonly string _url = null;

private readonly string _corpid = null;

private readonly string _secret = null;

public WeChat()

{

_url = "https://qyapi.weixin.qq.com/cgi-bin";

_corpid = "CorpID是企业号的标识，每个企业号拥有一个唯一的CorpID";

_secret = "secret是管理组凭证密钥，系统管理员在企业号管理后台创建管理组时，企业号后台为该管理组分配一个唯一的secret";

}

public string GetToken(string url_prefix = "/")

{

string urlParams = string.Format("corpid={0}&corpsecret={1}", HttpUtility.UrlEncodeUnicode(_corpid), HttpUtility.UrlEncodeUnicode(_secret));

string url = _url + url_prefix + "gettoken?" + urlParams;

string result = HttpGet(url);

var content = JObject.Parse(result);

return content["access_token"].ToString();

}

public JObject PostData(dynamic data, string url_prefix = "/")

{

string dataStr = JsonConvert.SerializeObject(data);

string url = _url + url_prefix + "message/send?access_token=" + GetToken();

string result = HttpPost(url, dataStr);

return JObject.Parse(result);

}

public JObject SendMessage(string touser, string message)

{

var data = new { touser = touser, toparty = "1", msgtype = "text", agentid = "2", text = new { content = message }, safe = "0" };

var jResult = PostData(data);

return jResult;

}

private string HttpPost(string Url, string postDataStr)

{

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);

request.Method = "POST";

request.ContentType = "application/x-www-form-urlencoded";

byte[] data = Encoding.UTF8.GetBytes(postDataStr);

request.ContentLength = data.Length;

Stream myRequestStream = request.GetRequestStream();

myRequestStream.Write(data, 0, data.Length);

myRequestStream.Close();

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

Stream myResponseStream = response.GetResponseStream();

StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);

string retString = myStreamReader.ReadToEnd();

myStreamReader.Close();

myResponseStream.Close();

return retString;

}

public string HttpGet(string Url, string urlParams = null)

{

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + (string.IsNullOrEmpty(urlParams) ? "" : "?") + urlParams);

request.Method = "GET";

request.ContentType = "text/html;charset=UTF-8";

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

Stream myResponseStream = response.GetResponseStream();

StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);

string retString = myStreamReader.ReadToEnd();

myStreamReader.Close();

myResponseStream.Close();

return retString;

}

具体的关于微信企业号开发文档，可参见：http://qydev.weixin.qq.com/wiki/index.php

最后的效果如下：

心跳监控程序监控效果：

手机收到异常消息：

（《-这是企业号发出的消息）（《-这里短信消息，当然发短信是我公司的平台接口发出的，发短信是需要RMB的，故不建议）

时间： 2024-08-10 23:27:12

利用WCF的双工通讯实现一个简单的心跳监控系统 z

利用WCF的双工通讯实现一个简单的心跳监控系统

利用WCF的双工通讯实现一个简单的心跳监控系统 z的相关文章

利用WCF的双工通讯实现一个简单的心跳监控系统

用java写一个远程视频监控系统，实时监控（类似直播）我想用RPT协议，不知道怎么把RPT协议集成到项目中

Python运维三十六式：用Python写一个简单的监控系统

利用javascript调用摄像头，可以配合socket开发监控系统

WCF初探-5：WCF消息交换模式之双工通讯(Duplex)

使用wcf的双工模式做的一个控制台聊天app

WCF服务二：创建一个简单的WCF服务程序

C++ 利用<cstdlib> 头文件，产生一个random number generator

利用破解dll来获取到一个软件的注册码