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）
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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）
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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）
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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）
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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）
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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）
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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）
|
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|
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：
|
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|
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）