public GameTrackerService()
{
GamesDataUpdateTimer = new System.Timers.Timer(TimeSpan.FromDays(1).TotalMilliseconds)
{
AutoReset = true
};
GamesDataUpdateTimer.Elapsed += (sender, args) => GameStore.ReloadGamesFromCentralRepository();
ProcessScannerTimer = new System.Timers.Timer(AppSettings.Instance.ProcessScanIntervalInSeconds * 1000)
{
AutoReset = true
};
ProcessScannerTimer.Elapsed += (sender, args) => { new ProcessScanner().ScanProcesses(ProcessScannerTimer); };
UserActivityFileMonitor = new HostFileChangeMonitor(new[] { UserActivityStore.DataFilePath }.ToList());
UserActivityFileMonitor.NotifyOnChanged((_) => { AllUserActivityCache.CancellationTokenSource.Cancel(); });
WebAssetsFileMonitor = new HostFileChangeMonitor(WebAssets.AllAssetPaths.ToArray());
WebAssetsFileMonitor.NotifyOnChanged((_) => { WebAssets.CancellationTokenSource.Cancel(); });
WebHost = new WebHostBuilder()
.UseKestrel()
.UseStartup <WebHostConfiguration>()
.UseConfiguration(AppSettings.Instance.Configuration)
.UseSerilog()
.UseUrls(WebHostListenAddress)
.Build();
}
/// <summary>
/// 添加到缓存
/// </summary>
/// <param name="value">被缓存的数据</param>
/// <param name="cacheKey">缓存key</param>
/// <param name="filePath">依赖缓存文件的绝对路径</param>
public static void SetCache_M(this object value, string cacheKey, string dependency_filePath)
{
if (!File.Exists(dependency_filePath))
{
throw new FileNotFoundException("缓存依赖文件不存在");
}
ObjectCache cache = MemoryCache.Default;
CacheItemPolicy policy = new CacheItemPolicy();
//缓存优先级别
policy.Priority = System.Runtime.Caching.CacheItemPriority.Default;
cache.Set(cacheKey, value, policy);
//设置监视对象
HostFileChangeMonitor monitor = new HostFileChangeMonitor(new List <string>()
{
dependency_filePath
});
//设置监视对象的回调操作
//依赖文件发生变化 即删除缓存
monitor.NotifyOnChanged(new OnChangedCallback(o =>
{
RemoveCache_M(cacheKey);
}));
//添加到监视器
policy.ChangeMonitors.Add(monitor);
}
/// <summary>
/// 从内存缓存中读取配置。若缓存中不存在，则重新从文件中读取配置，存入缓存
/// </summary>
/// <returns></returns>
public static List <ReportTemplateFile> GetReportTemplates()
{
List <ReportTemplateFile> reportTemplates = null;
ObjectCache cache = MemoryCache.Default;
if (cache.Contains(CacheKey))
{
reportTemplates = cache.GetCacheItem(CacheKey).Value as List <ReportTemplateFile>;
}
else
{
reportTemplates = LoadReportTemplates();
if (reportTemplates.Any())
{
CacheItemPolicy policy = new CacheItemPolicy()
{
Priority = CacheItemPriority.NotRemovable
};
cache.Set(CacheKey, reportTemplates, policy);
var fileInfos = new DirectoryInfo(ReportTemplateFilesPath).GetFiles().ToList();
List <string> filePaths = fileInfos.Select(f => f.FullName).ToList();
HostFileChangeMonitor monitor = new HostFileChangeMonitor(filePaths);
monitor.NotifyOnChanged(new OnChangedCallback((o) => cache.Remove(CacheKey)));
policy.ChangeMonitors.Add(monitor);
}
}
return(reportTemplates);
}
/// <summary>
/// 从内存缓存中读取配置。若缓存中不存在，则重新从文件中读取配置，存入缓存
/// </summary>
/// <returns></returns>
public static List <ClientApplicationVersion> GetClientApplicationVersion()
{
List <ClientApplicationVersion> clientApplicationVersions = null;
ObjectCache cache = MemoryCache.Default;
if (cache.Contains(CacheKey))
{
clientApplicationVersions = cache.GetCacheItem(CacheKey).Value as List <ClientApplicationVersion>;
}
else
{
clientApplicationVersions = LoadClientApplicationConfigs();
if (clientApplicationVersions.Any())
{
CacheItemPolicy policy = new CacheItemPolicy()
{
Priority = CacheItemPriority.NotRemovable
};
cache.Set(CacheKey, clientApplicationVersions, policy);
List <string> filePaths = new List <string> {
ClientAppVersionConfigFile
};
HostFileChangeMonitor monitor = new HostFileChangeMonitor(filePaths);
monitor.NotifyOnChanged(new OnChangedCallback((o) => cache.Remove(CacheKey)));
policy.ChangeMonitors.Add(monitor);
}
}
return(clientApplicationVersions);
}
public void Constructor_Duplicates()
{
HostFileChangeMonitor monitor;
PlatformID pid = Environment.OSVersion.Platform;
bool runningOnWindows = ((int)pid != 128 && pid != PlatformID.Unix && pid != PlatformID.MacOSX);
string missingFile = Path.Combine("missing", "file", "path");
if (runningOnWindows)
{
missingFile = "c:\\file.txt";
}
else
{
missingFile = "/file.txt";
}
var paths = new List <string> {
missingFile,
missingFile
};
// Just checks if it doesn't throw any exception for dupes
monitor = new HostFileChangeMonitor(paths);
monitor.Dispose();
}
public void Constructor_Exceptions()
{
HostFileChangeMonitor monitor;
string relPath = Path.Combine("relative", "file", "path");
var paths = new List <string> {
relPath
};
Assert.Throws <ArgumentException> (() => {
monitor = new HostFileChangeMonitor(paths);
}, "#A1");
paths.Clear();
paths.Add(null);
Assert.Throws <ArgumentException> (() => {
monitor = new HostFileChangeMonitor(paths);
}, "#A2");
paths.Clear();
paths.Add(String.Empty);
Assert.Throws <ArgumentException> (() => {
monitor = new HostFileChangeMonitor(paths);
}, "#A3");
Assert.Throws <ArgumentNullException> (() => {
monitor = new HostFileChangeMonitor(null);
}, "#A4");
paths.Clear();
Assert.Throws <ArgumentException> (() => {
monitor = new HostFileChangeMonitor(paths);
}, "#A5");
}
static void Constructor_MissingFiles_Handler()
{
HostFileChangeMonitor monitor;
PlatformID pid = Environment.OSVersion.Platform;
bool runningOnWindows = ((int)pid != 128 && pid != PlatformID.Unix && pid != PlatformID.MacOSX);
string missingFile = Path.Combine("missing", "file", "path");
if (runningOnWindows)
{
missingFile = "c:\\" + missingFile;
}
else
{
missingFile = "/" + missingFile;
}
var paths = new List <string> {
missingFile
};
// Actually thrown by FileSystemWatcher constructor - note that the exception message suggests the file's
// parent directory is being watched, not the file itself:
//
// MonoTests.System.Runtime.Caching.HostFileChangeMonitorTest.Constructor_MissingFiles:
// System.ArgumentException : The directory name c:\missing\file is invalid.
// at System.IO.FileSystemWatcher..ctor(String path, String filter)
// at System.IO.FileSystemWatcher..ctor(String path)
// at System.Runtime.Caching.FileChangeNotificationSystem.System.Runtime.Caching.Hosting.IFileChangeNotificationSystem.StartMonitoring(String filePath, OnChangedCallback onChangedCallback, Object& state, DateTimeOffset& lastWriteTime, Int64& fileSize)
// at System.Runtime.Caching.HostFileChangeMonitor.InitDisposableMembers()
// at System.Runtime.Caching.HostFileChangeMonitor..ctor(IList`1 filePaths)
// at MonoTests.System.Runtime.Caching.HostFileChangeMonitorTest.Constructor_MissingFiles() in c:\users\grendel\documents\visual studio 2010\Projects\System.Runtime.Caching.Test\System.Runtime.Caching.Test\System.Runtime.Caching\HostFileChangeMonitorTest.cs:line 68
Assert.Throws <ArgumentException> (() => {
monitor = new HostFileChangeMonitor(paths);
}, "#A1");
if (runningOnWindows)
{
missingFile = "c:\\file.txt";
}
else
{
missingFile = "/file.txt";
}
paths.Clear();
paths.Add(missingFile);
monitor = new HostFileChangeMonitor(paths);
Assert.AreEqual(1, monitor.FilePaths.Count, "#A2-1");
Assert.AreEqual(missingFile, monitor.FilePaths [0], "#A2-2");
Assert.AreEqual(missingFile + "701CE1722770000FFFFFFFFFFFFFFFF", monitor.UniqueId, "#A2-4");
monitor.Dispose();
paths.Add(missingFile);
monitor = new HostFileChangeMonitor(paths);
Assert.AreEqual(2, monitor.FilePaths.Count, "#A3-1");
Assert.AreEqual(missingFile, monitor.FilePaths [0], "#A3-2");
Assert.AreEqual(missingFile, monitor.FilePaths [1], "#A3-3");
Assert.AreEqual(missingFile + "701CE1722770000FFFFFFFFFFFFFFFF", monitor.UniqueId, "#A3-4");
monitor.Dispose();
}
/// <summary>
/// 从内存缓存中读取配置。若缓存中不存在，则重新从文件中读取配置，存入缓存
/// </summary>
/// <param name="cacheKey">缓存Key</param>
/// <param name="path">文件路径</param>
/// <param name="func">获取xml内容</param>
/// <returns>配置词典</returns>
private static object GetConfigDictionary(string cacheKey, string path, Func <string, object> func)
{
object configs = new object();
ObjectCache cache = MemoryCache.Default;
if (cache.Contains(cacheKey))
{
var cacheItem = cache.GetCacheItem(cacheKey);
if (cacheItem != null)
{
configs = cacheItem.Value;
}
}
else
{
configs = func(path);
CacheItemPolicy policy = new CacheItemPolicy {
Priority = CacheItemPriority.NotRemovable
};
cache.Set(cacheKey, configs, policy);
List <string> filePaths = new List <string>()
{
path
};
HostFileChangeMonitor monitor = new HostFileChangeMonitor(filePaths);
monitor.NotifyOnChanged((o) => {
cache.Remove(cacheKey);
});
policy.ChangeMonitors.Add(monitor);
}
return(configs);
}
/// <summary>
/// 从内存缓存中读取配置。若缓存中不存在，则重新从文件中读取配置，存入缓存
/// </summary>
/// <param name="cacheKey">缓存Key</param>
/// <returns>配置词典</returns>
public static Dictionary <string, string> GetConfigDictionary(string cacheKey)
{
Dictionary <string, string> configs = null;
//1、获取内存缓存对象
var cache = MemoryCache.Default;
//2、通过Key判断缓存中是否已有词典内容（Key在存入缓存时设置）
if (cache.Contains(cacheKey))
{
//3、直接从缓存中读取词典内容
configs = cache.GetCacheItem(cacheKey).Value as Dictionary <string, string>;
}
else
{
//3、读取配置文件，组成词典对象，准备放到缓存中
configs = GetFromXml();
//4、检查是否读取到配置内容
if (configs != null)
{
//4、新建一个CacheItemPolicy对象，该对象用于声明配置对象在缓存中的处理策略
CacheItemPolicy policy = new CacheItemPolicy();
//5、因为配置文件一直需要读取，所以在此设置缓存优先级为不应删除
// 实际情况请酌情考虑，同时可以设置AbsoluteExpiration属性指定过期时间
policy.Priority = CacheItemPriority.NotRemovable;
//6、将词典内容添加到缓存，传入 缓存Key、配置对象、对象策略
// Set方法首先会检查Key是否在缓存中存在，如果存在，更新value，不存在则创建新的
// 这里先加入缓存再加监视的原因是：在缓存加入时，也会触发监视事件，会导致出错。
cache.Set(cacheKey, configs, policy);
//7、监视文件需要传入一个IList对象，所以即便只有一个文件也需要新建List对象
string applicationPath = AppDomain.CurrentDomain.BaseDirectory;
string configPath = applicationPath + "MemeryCacheTest.exe.config";
List <string> filePaths = new List <string>()
{
@"c:\config.xml", configPath
};
//8、新建一个文件监视器对象，添加对资源文件的监视
HostFileChangeMonitor monitor = new HostFileChangeMonitor(filePaths);
//9、调用监视器的NotifyOnChanged方法传入发生改变时的回调方法
monitor.NotifyOnChanged(new OnChangedCallback((o) =>
{
cache.Remove(cacheKey);
}
));
//10、为配置对象的缓存策略加入监视器
policy.ChangeMonitors.Add(monitor);
}
}
return(configs);
}
public object AddOrGetExisting(string key, object value, string dependencyFile)
{
var policy = this.BuildDefaultPolicy();
var files = new List <string>();
files.Add(dependencyFile);
var dependency = new HostFileChangeMonitor(files);
return(this.Cache.AddOrGetExisting(key, value, policy));
}
private void buttonAddCache_Click(object sender, RoutedEventArgs e)
{
ObjectCache oCache = MemoryCache.Default;
#region DosyaCache
// Dosya bazlı bir bağımlılık politikası üretimi
CacheItemPolicy policy = new CacheItemPolicy(); // Önce Policy tipi oluşturulur
// Policy tipi için yeni bir dosya değişikliğini takip eden monitor nesnesi eklenir
HostFileChangeMonitor cMonitor = new HostFileChangeMonitor(new List <string> {
filePath
});
// Monitor örneğin ilkelere eklenir
policy.ChangeMonitors.Add(cMonitor);
policy.AbsoluteExpiration = DateTimeOffset.Now.AddSeconds(15);
// Ön belleğe PDF tipinden olan dosya bir byte[] dizisi şeklinde eklenir. İkinci parametre de dependency belirtilir
byte[] bytes = File.ReadAllBytes(filePath);
mCache.Add("Aspnet40", bytes, policy);
#endregion
#region Class Cache
// Custom Type türevli bir örneğin ön belleğe eklenmesi
Person person1 = new Person();
person1.Name = "Mustafa";
person1.Surname = "TEKERASLAN";
person1.Salary = 1000;
person1.BirthDate = new DateTime(1989, 1, 1);
mCache.Add("Person", person1, DateTimeOffset.Now.AddSeconds(30));
// Eklenme anından itibaren 30 saniye süreyle ön bellekte tutulacağı DateTimeOffset yardımıyla belirtilir
#endregion
#region DB Cache
// Ön belleğe DataTable türünden bir nesne örneğinin eklenmesi
DataTable table = new DataTable();
using (SqlConnection conn = new SqlConnection("data source=(local);database=Northwnd;integrated security=SSPI"))
{
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
SqlDataAdapter adapter = new SqlDataAdapter("Select * From Products", conn);
adapter.Fill(table);
}
mCache.Add("Products", table, DateTimeOffset.Now.AddMinutes(1));
// DataTable içeriği eklenme anından itibaren iki dakika süreyle ön bellekte tutulacaktır
#endregion
MessageBox.Show("Cache'e Kaydedildi");
}
public T AddOrGetExisting <T>(string key, T value, string dependencyFile)
{
var policy = this.BuildDefaultPolicy();
var files = new List <string>();
files.Add(dependencyFile);
var dependency = new HostFileChangeMonitor(files);
var result = this.Cache.AddOrGetExisting(key, value, policy);
return(result is T ? (T)result : default(T));
}
/// <summary>
/// 添加缓存项
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <param name="dependency">缓存依赖文件</param>
/// <returns></returns>
public bool Add(string key, object value, string dependencyFile)
{
var policy = this.BuildDefaultPolicy();
var files = new List <string>();
files.Add(dependencyFile);
var dependency = new HostFileChangeMonitor(files);
policy.ChangeMonitors.Add(dependency);
return(Cache.Add(key, value, policy));
}
public void Constructor_Duplicates()
{
HostFileChangeMonitor monitor;
string missingFile = Path.GetFullPath(Guid.NewGuid().ToString("N"));
var paths = new List <string> {
missingFile,
missingFile
};
// Just checks if it doesn't throw any exception for dupes
monitor = new HostFileChangeMonitor(paths);
monitor.Dispose();
}
public XmlDocument Read()
{
var ds = new DataSet();
if (String.IsNullOrEmpty(_filePath))
{
throw new ArgumentException("Invalid configFilePath.");
}
var key = _filePath;
lock (this)
{
var data = objectCache[key] as XmlDocument;
if (data != null)
{
Utility.DebugLog(String.Format("[From Cache] XmlCacheConfig ({0})", _filePath));
return(data);
}
if (!File.Exists(_filePath))
{
throw new FileNotFoundException(String.Format("ConfigFile {0} not found.", _filePath));
}
var policy = new CacheItemPolicy();
var monitor = new HostFileChangeMonitor(new List <string> {
key
});
policy.ChangeMonitors.Add(monitor);
policy.AbsoluteExpiration = DateTimeOffset.UtcNow.AddMinutes(720);
var wrapperData = new XmlDocument();
var text = File.ReadAllText(_filePath);
if (!String.IsNullOrEmpty(text))
{
var bts = Encoding.UTF8.GetBytes(text);
wrapperData.Load(new MemoryStream(bts));
}
Utility.DebugLog(String.Format("[From Resource] XmlCacheConfig ({0})", _filePath));
objectCache.Set(key, wrapperData, policy);
return(wrapperData);
}
}
static DsConfigurationManager()
{
HostFileChangeMonitor hfcm = new HostFileChangeMonitor(new List <string> {
ConfigurationFileHelper.GetRootConfigurationFilePath()
});
policy.ChangeMonitors.Add(hfcm);
//FileSystemWatcher watcher = new FileSystemWatcher();
//watcher.Path = watchPath;
//watcher.Filter = "*.config";
//watcher.NotifyFilter = NotifyFilters.Size;
//watcher.Changed += new FileSystemEventHandler(watcher_Changed);
//watcher.EnableRaisingEvents = true;
}
static void Constructor_Calls_StartMonitoring_Handler()
{
Tuple <string, string, string, IList <string> > setup = null;
try {
var tns = new TestNotificationSystem();
ObjectCache.Host = tns;
setup = SetupMonitoring();
var monitor = new HostFileChangeMonitor(setup.Item4);
Assert.IsTrue(tns.StartMonitoringCalled, "#A1-1");
Assert.AreEqual(2, tns.StartMonitoringCallCount, "#A1-2");
} finally {
CleanupMonitoring(setup);
}
}
public void Set(string key, object value, int minutes, params string[] monitorFiles)
{
var item = new CacheItem(key, value);
var policy = new CacheItemPolicy()
{
SlidingExpiration = TimeSpan.FromMinutes(minutes)
};
if (monitorFiles != null && monitorFiles.Length > 0)
{
var monitor = new HostFileChangeMonitor(monitorFiles);
policy.ChangeMonitors.Add(monitor);
}
Cache.Set(item, policy);
}
/**
* @ 创建目录类型的缓存，主要用于监控文件数量
* @ key 缓存的键
* @ path 路径，请确保路径存在
* @ offset 缓存有效时间
* @ searchPattern 搜索匹配关键字，默认：*
* @ searchOption 文件搜索选项，默认TopDirectoryOnly
* @ direcotryOption 目录缓存选项，默认FileAmountOnly
* @ priority 逐出缓存优先级策略
* */
public static string CreateDirectoryCache(string key, string path, DateTimeOffset offset, string searchPattern = "*", SearchOption searchOption = SearchOption.TopDirectoryOnly, DirectoryOption direcotryOption = DirectoryOption.FileAmountOnly, CacheItemPriority priority = CacheItemPriority.Default)
{
if (string.IsNullOrEmpty(key))
{
throw new ArgumentNullException("key不能为空");
}
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException("path不能为空");
}
bool isNotExists = Directory.Exists(path);
if (isNotExists)
{
throw new ArgumentNullException(string.Format("指定目录：{0}不存在！", path));
}
object values = GLCacheExpiration.Cache.Get(key);
if (values == null)
{
CacheItemPolicy policy = new CacheItemPolicy();
List <string> fp = new List <string>()
{
path
};
HostFileChangeMonitor monitor = new HostFileChangeMonitor(fp);
policy.AbsoluteExpiration = offset;
policy.Priority = priority;
policy.ChangeMonitors.Add(monitor);
string[] files = Directory.GetFiles(path, searchPattern, searchOption);
if (direcotryOption == DirectoryOption.FileAmountOnly)
{
values = files == null ? 0 : files.Length;
}
else if (direcotryOption == DirectoryOption.FileNameArray)
{
values = files;
}
CacheItem chitem = new CacheItem(key, values);
Cache.AddOrGetExisting(chitem, policy);
}
return(values.ToString());
}
public void UniqueId()
{
Tuple <string, string, string, IList <string> > setup = null;
try
{
setup = SetupMonitoring();
FileInfo fi;
var monitor = new HostFileChangeMonitor(setup.Item4);
var sb = new StringBuilder();
fi = new FileInfo(setup.Item2);
sb.AppendFormat("{0}{1:X}{2:X}",
setup.Item2,
fi.LastWriteTimeUtc.Ticks,
fi.Length);
fi = new FileInfo(setup.Item3);
sb.AppendFormat("{0}{1:X}{2:X}",
setup.Item3,
fi.LastWriteTimeUtc.Ticks,
fi.Length);
Assert.Equal(sb.ToString(), monitor.UniqueId);
var list = new List <string>(setup.Item4);
list.Add(setup.Item1);
monitor = new HostFileChangeMonitor(list);
var di = new DirectoryInfo(setup.Item1);
sb.AppendFormat("{0}{1:X}{2:X}",
setup.Item1,
di.LastWriteTimeUtc.Ticks,
-1L);
Assert.Equal(sb.ToString(), monitor.UniqueId);
list.Add(setup.Item1);
monitor = new HostFileChangeMonitor(list);
Assert.Equal(sb.ToString(), monitor.UniqueId);
monitor.Dispose();
}
finally
{
CleanupMonitoring(setup);
}
}
private static void OnConfigFileChanged(object obj)
{
if (ServerConnectionSettings.s_Monitor != null && ServerConnectionSettings.s_Monitor.HasChanged)
{
if (ServerConnectionSettings.LoadConfigSettings(ServerConnectionSettings.s_DefaultConfigurationFile))
{
try
{
EventHandler configFileChanged = ServerConnectionSettings.ConfigFileChanged;
if (configFileChanged != null)
{
configFileChanged((object)null, EventArgs.Empty);
}
}
catch (Exception ex)
{
string message = string.Format("Error notifying for file changes\r\n{0}", (object)ex.ToString());
Trace.TraceWarning(message);
if (ServerConnectionSettings.s_EventLog != null)
{
ServerConnectionSettings.s_EventLog.WriteEntry(message, EventLogEntryType.Warning);
}
}
}
}
ServerConnectionSettings.s_Monitor = (HostFileChangeMonitor)null;
try
{
ServerConnectionSettings.s_Monitor = new HostFileChangeMonitor((IList <string>) new List <string>()
{
ServerConnectionSettings.s_DefaultConfigurationFile
});
ServerConnectionSettings.s_Monitor.NotifyOnChanged(new OnChangedCallback(ServerConnectionSettings.OnConfigFileChanged));
}
catch (Exception ex)
{
string message = string.Format("Error establishing change notifications\r\n{0}", (object)ex.ToString());
Trace.TraceWarning(message);
if (ServerConnectionSettings.s_EventLog == null)
{
return;
}
ServerConnectionSettings.s_EventLog.WriteEntry(message, EventLogEntryType.Warning);
}
}
public static void Constructor_MissingFiles_Handler()
{
HostFileChangeMonitor monitor;
string missingFile = Path.GetFullPath(Path.Combine(Guid.NewGuid().ToString("N"), "file", "path"));
var paths = new List <string> {
missingFile
};
// Actually thrown by FileSystemWatcher constructor - note that the exception message suggests the file's
// parent directory is being watched, not the file itself:
//
// MonoTests.System.Runtime.Caching.HostFileChangeMonitorTest.Constructor_MissingFiles:
// System.ArgumentException : The directory name c:\missing\file is invalid.
// at System.IO.FileSystemWatcher..ctor(String path, String filter)
// at System.IO.FileSystemWatcher..ctor(String path)
// at System.Runtime.Caching.FileChangeNotificationSystem.System.Runtime.Caching.Hosting.IFileChangeNotificationSystem.StartMonitoring(String filePath, OnChangedCallback onChangedCallback, Object& state, DateTimeOffset& lastWriteTime, Int64& fileSize)
// at System.Runtime.Caching.HostFileChangeMonitor.InitDisposableMembers()
// at System.Runtime.Caching.HostFileChangeMonitor..ctor(IList`1 filePaths)
// at MonoTests.System.Runtime.Caching.HostFileChangeMonitorTest.Constructor_MissingFiles() in c:\users\grendel\documents\visual studio 2010\Projects\System.Runtime.Caching.Test\System.Runtime.Caching.Test\System.Runtime.Caching\HostFileChangeMonitorTest.cs:line 68
Assert.Throws <ArgumentException>(() =>
{
new HostFileChangeMonitor(paths);
});
missingFile = Path.GetFullPath(Guid.NewGuid().ToString("N"));
paths.Clear();
paths.Add(missingFile);
monitor = new HostFileChangeMonitor(paths);
Assert.Equal(1, monitor.FilePaths.Count);
Assert.Equal(missingFile, monitor.FilePaths[0]);
//??
Assert.Equal(missingFile + "701CE1722770000FFFFFFFFFFFFFFFF", monitor.UniqueId);
monitor.Dispose();
paths.Add(missingFile);
monitor = new HostFileChangeMonitor(paths);
Assert.Equal(2, monitor.FilePaths.Count);
Assert.Equal(missingFile, monitor.FilePaths[0]);
Assert.Equal(missingFile, monitor.FilePaths[1]);
//??
Assert.Equal(missingFile + "701CE1722770000FFFFFFFFFFFFFFFF", monitor.UniqueId);
monitor.Dispose();
}
static void Dispose_NullState_NoStopMonitoring_Handler()
{
Tuple <string, string, string, IList <string> > setup = null;
try {
var tns = new TestNotificationSystem();
tns.UseNullState = true;
ObjectCache.Host = tns;
setup = SetupMonitoring();
var monitor = new HostFileChangeMonitor(setup.Item4);
tns.FakeChanged(setup.Item2);
Assert.IsFalse(tns.StopMonitoringCalled, "#A1-1");
Assert.AreEqual(0, tns.StopMonitoringCallCount, "#A1-2");
} finally {
CleanupMonitoring(setup);
}
}
/// <summary>
/// 监视配置文件
/// </summary>
public static void MonitorConfigFile(EventHandler <SupportPlatformsChangedEventArgs> callbackOnConfigChangedHandler)
{
//使用基于文件缓存依赖的方式去监听文件 而不是使用 FileSystemWatch
var cacheContainer = MemoryCache.Default;
string cacheKey = "SupportPlatform-MonitorConfigFile";
if (cacheContainer.Contains(cacheKey))
{
cacheContainer.Remove(cacheKey);
}
if (null != callbackOnConfigChangedHandler)
{
//如果已经存在这个缓存 表示已经加入了依赖监视 ，直接注册委托广播源即可
OnConfigFileChanged += callbackOnConfigChangedHandler;
}
//缓存策略
var policy = new CacheItemPolicy();
//绝对过期
policy.Priority = CacheItemPriority.NotRemovable;
cacheContainer.Add(new CacheItem(cacheKey, DateTime.Now.ToString()), policy);
//开启文件缓存 进行监视依赖
HostFileChangeMonitor monitor = new HostFileChangeMonitor(new List <string> {
configFilePath
});
//当文件发生变更的时候 触发通知
monitor.NotifyOnChanged((state) =>
{
//获取最新的配置 并触发事件
//var lstNewConfigs = SupportPlatformLoader.LoadConfig();CurrentSupportPlatforms = lstNewConfigs
//直接 通知订阅的事件 将内容列表清空 ，再次重新加载即可
if (null != OnConfigFileChanged)
{
OnConfigFileChanged(null, new SupportPlatformsChangedEventArgs {
});
}
});
policy.ChangeMonitors.Add(monitor);
}
private static void Dispose_Calls_StopMonitoring_Handler()
{
Tuple <string, string, string, IList <string> > setup = null;
try
{
var tns = new TestNotificationSystem();
ObjectCache.Host = tns;
setup = SetupMonitoring();
var monitor = new HostFileChangeMonitor(setup.Item4);
tns.FakeChanged(setup.Item2);
Assert.True(tns.StopMonitoringCalled);
Assert.Equal(2U, tns.StopMonitoringCallCount);
}
finally
{
CleanupMonitoring(setup);
}
}
public bool Register<T>(string key,string filePath, Func<byte[],T> adapter)
{
ObjectCache configurationCache = MemoryCache.Default;
CacheItemPolicy policy = new CacheItemPolicy();
HostFileChangeMonitor hfcm = new HostFileChangeMonitor(new List<string> { filePath });
policy.ChangeMonitors.Add(hfcm);
if (configurationCache.Contains(key))
return false;
if (File.Exists(filePath))
{
using (FileStream sFile = new FileStream(filePath, FileMode.Open))
{
byte[] data = new byte[sFile.Length];
sFile.Read(data, 0, data.Length);
configurationCache.Set(key, adapter(data), policy);
}
return true;
}
else {
throw new Exception("Register file does not exist!");
};
}
public void Add <T>(string key, string dependencyKey, T obj, TimeSpan timeSpan)
{
if (obj == null)
{
return;
}
var policy = new CacheItemPolicy {
AbsoluteExpiration = DateTime.Now + timeSpan
};
LocalCache.Add(new CacheItem(key, obj), policy);
HostFileChangeMonitor monitor = new HostFileChangeMonitor(new List <string>()
{
dependencyKey
});
monitor.NotifyOnChanged(new OnChangedCallback((o) =>
{
LocalCache.Remove(key);
}));
policy.ChangeMonitors.Add(monitor);
}
public void Add <T>(string key, string dependencyKey, T obj)
{
if (obj == null)
{
return;
}
var policy = new CacheItemPolicy {
Priority = CacheItemPriority.NotRemovable
};
LocalCache.Add(new CacheItem(key, obj), policy);
HostFileChangeMonitor monitor = new HostFileChangeMonitor(new List <string>()
{
dependencyKey
});
monitor.NotifyOnChanged(new OnChangedCallback((o) =>
{
LocalCache.Remove(key);
}));
policy.ChangeMonitors.Add(monitor);
}
private bool RegisterMoniter(string key, params string[] dependentFiles)
{
if (this._isDisposed)
{
return(false);
}
string moniterKey = key + "|" + string.Join("|", dependentFiles);
if (!this._monitors.ContainsKey(moniterKey))
{
lock (this._monitors)
{
if (!this._monitors.ContainsKey(moniterKey))
{
HostFileChangeMonitor moniter = new HostFileChangeMonitor(dependentFiles);
moniter.NotifyOnChanged(delegate(object state)
{
try
{
this.Remove(key);
moniter.Dispose();
}
catch
{
}
finally
{
this._monitors.Remove(moniterKey);
this.RegisterMoniter(key, dependentFiles);
}
});
this._monitors.Add(moniterKey, moniter);
}
}
}
return(true);
}
/**
* @ 创建文件系统类型的缓存
* @ key 缓存的键
* @ filePath 文件路径
* @ offset 缓存有效时间
* @ priority 逐出缓存优先级策略
* */
public static string CreateFileCache(string key, string filePath, DateTimeOffset offset, CacheItemPriority priority = CacheItemPriority.Default)
{
if (string.IsNullOrEmpty(key))
{
throw new ArgumentNullException("key不能为空");
}
if (string.IsNullOrEmpty(filePath))
{
throw new ArgumentNullException("filePath不能为空");
}
bool isNotExists = File.Exists(filePath);
if (isNotExists)
{
throw new ArgumentNullException(string.Format("指定文件：{0}不存在！", filePath));
}
object values = GLCacheExpiration.Cache.Get(key);
if (values == null)
{
CacheItemPolicy policy = new CacheItemPolicy();
List <string> fp = new List <string>()
{
filePath
};
HostFileChangeMonitor monitor = new HostFileChangeMonitor(fp);
policy.AbsoluteExpiration = offset;
policy.Priority = priority;
policy.ChangeMonitors.Add(monitor);
values = File.ReadAllText(filePath);
CacheItem chitem = new CacheItem(key, values);
Cache.AddOrGetExisting(chitem, policy);
}
return(values.ToString());
}
