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reduce use of timers throughout the system

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This commit is contained in:
Luke Pulverenti 2016-01-28 22:40:21 -05:00
parent 8ff5d4af47
commit 3510ef3d2b
8 changed files with 97 additions and 91 deletions
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15
MediaBrowser.Common.Implementations/Networking/BaseNetworkManager.cs
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@ -6,7 +6,6 @@ using System.Linq;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Sockets;
using System.Threading;
using MoreLinq;
namespace MediaBrowser.Common.Implementations.Networking
@ -14,14 +13,11 @@ namespace MediaBrowser.Common.Implementations.Networking
public abstract class BaseNetworkManager
{
protected ILogger Logger { get; private set; }
private Timer _clearCacheTimer;
private DateTime _lastRefresh;
protected BaseNetworkManager(ILogger logger)
{
Logger = logger;
// Can't use network change events due to a crash in Linux
_clearCacheTimer = new Timer(ClearCacheTimerCallback, null, TimeSpan.FromMinutes(1), TimeSpan.FromMinutes(1));
}
private void ClearCacheTimerCallback(object state)
@ -41,15 +37,20 @@ namespace MediaBrowser.Common.Implementations.Networking
/// <returns>IPAddress.</returns>
public IEnumerable<IPAddress> GetLocalIpAddresses()
{
if (_localIpAddresses == null)
var forceRefresh = (DateTime.UtcNow - _lastRefresh).TotalMinutes >= 1;
if (_localIpAddresses == null || forceRefresh)
{
lock (_localIpAddressSyncLock)
{
if (_localIpAddresses == null)
forceRefresh = (DateTime.UtcNow - _lastRefresh).TotalMinutes >= 1;
if (_localIpAddresses == null || forceRefresh)
{
var addresses = GetLocalIpAddressesInternal().ToList();
_localIpAddresses = addresses;
_lastRefresh = DateTime.UtcNow;
return addresses;
}

1
MediaBrowser.Common/MediaBrowser.Common.csproj
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@ -90,6 +90,7 @@
<Compile Include="Security\IRequiresRegistration.cs" />
<Compile Include="Security\ISecurityManager.cs" />
<Compile Include="Security\PaymentRequiredException.cs" />
<Compile Include="Threading\PeriodicTimer.cs" />
<Compile Include="Updates\IInstallationManager.cs" />
<Compile Include="Updates\InstallationEventArgs.cs" />
<Compile Include="Updates\InstallationFailedEventArgs.cs" />

67
MediaBrowser.Common/Threading/PeriodicTimer.cs Normal file
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@ -0,0 +1,67 @@
using System;
using System.Threading;
using Microsoft.Win32;
namespace MediaBrowser.Common.Threading
{
public class PeriodicTimer : IDisposable
{
public Action<object> Callback { get; set; }
private Timer _timer;
private readonly object _state;
private readonly object _timerLock = new object();
private readonly TimeSpan _period;
public PeriodicTimer(Action<object> callback, object state, TimeSpan dueTime, TimeSpan period)
{
Callback = callback;
_period = period;
_state = state;
StartTimer(dueTime);
}
void SystemEvents_PowerModeChanged(object sender, PowerModeChangedEventArgs e)
{
if (e.Mode == PowerModes.Resume)
{
DisposeTimer();
StartTimer(Timeout.InfiniteTimeSpan);
}
}
private void TimerCallback(object state)
{
Callback(state);
}
private void StartTimer(TimeSpan dueTime)
{
lock (_timerLock)
{
_timer = new Timer(TimerCallback, _state, dueTime, _period);
SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
}
}
private void DisposeTimer()
{
SystemEvents.PowerModeChanged -= SystemEvents_PowerModeChanged;
lock (_timerLock)
{
if (_timer != null)
{
_timer.Dispose();
_timer = null;
}
}
}
public void Dispose()
{
DisposeTimer();
}
}
}

18
MediaBrowser.Providers/People/MovieDbPersonProvider.cs
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@ -38,7 +38,7 @@ namespace MediaBrowser.Providers.People
private int _requestCount;
private readonly object _requestCountLock = new object();
private Timer _requestCountReset;
private DateTime _lastRequestCountReset;
public MovieDbPersonProvider(IFileSystem fileSystem, IServerConfigurationManager configurationManager, IJsonSerializer jsonSerializer, IHttpClient httpClient, ILogger logger)
{
@ -48,16 +48,6 @@ namespace MediaBrowser.Providers.People
_httpClient = httpClient;
_logger = logger;
Current = this;
_requestCountReset = new Timer(OnRequestThrottleTimerFired, null, TimeSpan.FromHours(1), TimeSpan.FromHours(1));
}
private void OnRequestThrottleTimerFired(object state)
{
lock (_requestCountLock)
{
_requestCount = 0;
}
}
public string Name
@ -101,6 +91,12 @@ namespace MediaBrowser.Providers.People
{
lock (_requestCountLock)
{
if ((DateTime.UtcNow - _lastRequestCountReset).TotalHours >= 1)
{
_requestCount = 0;
_lastRequestCountReset = DateTime.UtcNow;
}
var requestCount = _requestCount;
if (requestCount >= 5)

61
MediaBrowser.Server.Implementations/Channels/ChannelManager.cs
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@ -29,7 +29,7 @@ using CommonIO;
namespace MediaBrowser.Server.Implementations.Channels
{
public class ChannelManager : IChannelManager, IDisposable
public class ChannelManager : IChannelManager
{
private IChannel[] _channels;
@ -47,11 +47,6 @@ namespace MediaBrowser.Server.Implementations.Channels
private readonly ILocalizationManager _localization;
private readonly ConcurrentDictionary<Guid, bool> _refreshedItems = new ConcurrentDictionary<Guid, bool>();
private readonly ConcurrentDictionary<string, int> _downloadCounts = new ConcurrentDictionary<string, int>();
private Timer _refreshTimer;
private Timer _clearDownloadCountsTimer;
public ChannelManager(IUserManager userManager, IDtoService dtoService, ILibraryManager libraryManager, ILogger logger, IServerConfigurationManager config, IFileSystem fileSystem, IUserDataManager userDataManager, IJsonSerializer jsonSerializer, ILocalizationManager localization, IHttpClient httpClient, IProviderManager providerManager)
{
_userManager = userManager;
@ -65,9 +60,6 @@ namespace MediaBrowser.Server.Implementations.Channels
_localization = localization;
_httpClient = httpClient;
_providerManager = providerManager;
_refreshTimer = new Timer(s => _refreshedItems.Clear(), null, TimeSpan.FromHours(3), TimeSpan.FromHours(3));
_clearDownloadCountsTimer = new Timer(s => _downloadCounts.Clear(), null, TimeSpan.FromHours(24), TimeSpan.FromHours(24));
}
private TimeSpan CacheLength
@ -211,6 +203,8 @@ namespace MediaBrowser.Server.Implementations.Channels
public async Task RefreshChannels(IProgress<double> progress, CancellationToken cancellationToken)
{
_refreshedItems.Clear();
var allChannelsList = GetAllChannels().ToList();
var numComplete = 0;
@ -1487,12 +1481,6 @@ namespace MediaBrowser.Server.Implementations.Channels
var limit = features.DailyDownloadLimit;
if (!ValidateDownloadLimit(host, limit))
{
_logger.Error(string.Format("Download limit has been reached for {0}", channel.Name));
throw new ChannelDownloadException(string.Format("Download limit has been reached for {0}", channel.Name));
}
foreach (var header in source.RequiredHttpHeaders)
{
options.RequestHeaders[header.Key] = header.Value;
@ -1511,8 +1499,6 @@ namespace MediaBrowser.Server.Implementations.Channels
};
}
IncrementDownloadCount(host, limit);
if (string.Equals(item.MediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase) && response.ContentType.StartsWith("video/", StringComparison.OrdinalIgnoreCase))
{
var extension = response.ContentType.Split('/')
@ -1547,46 +1533,5 @@ namespace MediaBrowser.Server.Implementations.Channels
}
}
private void IncrementDownloadCount(string key, int? limit)
{
if (!limit.HasValue)
{
return;
}
int current;
_downloadCounts.TryGetValue(key, out current);
current++;
_downloadCounts.AddOrUpdate(key, current, (k, v) => current);
}
private bool ValidateDownloadLimit(string key, int? limit)
{
if (!limit.HasValue)
{
return true;
}
int current;
_downloadCounts.TryGetValue(key, out current);
return current < limit.Value;
}
public void Dispose()
{
if (_clearDownloadCountsTimer != null)
{
_clearDownloadCountsTimer.Dispose();
_clearDownloadCountsTimer = null;
}
if (_refreshTimer != null)
{
_refreshTimer.Dispose();
_refreshTimer = null;
}
}
}
}

5
MediaBrowser.Server.Implementations/Connect/ConnectEntryPoint.cs
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@ -13,12 +13,13 @@ using System.Threading;
using System.Threading.Tasks;
using CommonIO;
using MediaBrowser.Common.IO;
using MediaBrowser.Common.Threading;
namespace MediaBrowser.Server.Implementations.Connect
{
public class ConnectEntryPoint : IServerEntryPoint
{
private Timer _timer;
private PeriodicTimer _timer;
private readonly IHttpClient _httpClient;
private readonly IApplicationPaths _appPaths;
private readonly ILogger _logger;
@ -43,7 +44,7 @@ namespace MediaBrowser.Server.Implementations.Connect
{
Task.Run(() => LoadCachedAddress());
_timer = new Timer(TimerCallback, null, TimeSpan.FromSeconds(5), TimeSpan.FromHours(3));
_timer = new PeriodicTimer(null, new TimerCallback(TimerCallback), TimeSpan.FromSeconds(5), TimeSpan.FromHours(3));
}
private readonly string[] _ipLookups = { "http://bot.whatismyipaddress.com", "https://connect.emby.media/service/ip" };

5
MediaBrowser.Server.Implementations/EntryPoints/ExternalPortForwarding.cs
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@ -11,6 +11,7 @@ using System.IO;
using System.Net;
using System.Text;
using System.Threading;
using MediaBrowser.Common.Threading;
namespace MediaBrowser.Server.Implementations.EntryPoints
{
@ -21,7 +22,7 @@ namespace MediaBrowser.Server.Implementations.EntryPoints
private readonly IServerConfigurationManager _config;
private readonly ISsdpHandler _ssdp;
private Timer _timer;
private PeriodicTimer _timer;
private bool _isStarted;
public ExternalPortForwarding(ILogManager logmanager, IServerApplicationHost appHost, IServerConfigurationManager config, ISsdpHandler ssdp)
@ -95,7 +96,7 @@ namespace MediaBrowser.Server.Implementations.EntryPoints
NatUtility.UnhandledException += NatUtility_UnhandledException;
NatUtility.StartDiscovery();
_timer = new Timer(s => _createdRules = new List<string>(), null, TimeSpan.FromMinutes(5), TimeSpan.FromMinutes(5));
_timer = new PeriodicTimer(s => _createdRules = new List<string>(), null, TimeSpan.FromMinutes(5), TimeSpan.FromMinutes(5));
_ssdp.MessageReceived += _ssdp_MessageReceived;

16
MediaBrowser.Server.Implementations/EntryPoints/UsageEntryPoint.cs
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@ -9,6 +9,7 @@ using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.EntryPoints
{
@ -23,7 +24,6 @@ namespace MediaBrowser.Server.Implementations.EntryPoints
private readonly ISessionManager _sessionManager;
private readonly IUserManager _userManager;
private Timer _timer;
private readonly TimeSpan _frequency = TimeSpan.FromHours(24);
private readonly ConcurrentDictionary<Guid, ClientInfo> _apps = new ConcurrentDictionary<Guid, ClientInfo>();
@ -95,16 +95,16 @@ namespace MediaBrowser.Server.Implementations.EntryPoints
return info;
}
public void Run()
public async void Run()
{
_timer = new Timer(OnTimerFired, null, TimeSpan.FromMilliseconds(5000), _frequency);
await Task.Delay(5000).ConfigureAwait(false);
OnTimerFired();
}
/// <summary>
/// Called when [timer fired].
/// </summary>
/// <param name="state">The state.</param>
private async void OnTimerFired(object state)
private async void OnTimerFired()
{
try
{
@ -121,12 +121,6 @@ namespace MediaBrowser.Server.Implementations.EntryPoints
public void Dispose()
{
_sessionManager.SessionStarted -= _sessionManager_SessionStarted;
if (_timer != null)
{
_timer.Dispose();
_timer = null;
}
}
}
}