// ReSharper restore FunctionNeverReturns
private void CheckChange(DynamicChangesMonitorInfo monitorInfo,
ICollection <string> modifiedResourcePaths,
Func <Resource, bool> resourceTypeFunc)
{
var resourcesToCheck = monitorInfo.DynamicResourcesToWatch.Where(resourceTypeFunc);
foreach (var resource in resourcesToCheck)
{
var cachedContent = resource.ReadFromCache(false);
/*
* If content is null, means two things:
* - No request ever made to that dynamic resource by Combres
* Combres will make such request anyway, so there's no need to post a change here.
* - The resource doesn't exist anymore in the latest Setting object,
* thus a change should not be posted here.
*/
if (cachedContent == null)
{
continue;
}
/*
* URL of local dynamic resources (i.e. starting with ~) must be resolved
* with a reference to HttpContext.Current, which does not really exist
* because we're in a custom thread. This injects a fake context which
* has enough information for the URL resolution to work.
*/
HttpContext.Current = fakeContext;
var newContent = resource.ReadNewContent();
if (!cachedContent.Equals(newContent))
{
modifiedResourcePaths.Add(resource.Path);
}
}
}
public DynamicChangesMonitorInfo(DynamicChangesMonitorInfo other)
{
DynamicResourcesToWatch = other.DynamicResourcesToWatch;
LocalChangeMonitorInterval = other.LocalChangeMonitorInterval;
RemoteChangeMonitorInterval = other.RemoteChangeMonitorInterval;
}
private void MonitorDynamicChanges(object state)
{
if (Log.IsDebugEnabled)
{
Log.Debug("Dynamic resource change monitor thread starts...");
}
long localIntervalElapsed = 0;
long remoteIntervalElapsed = 0;
var watch = new Stopwatch();
while (true)
{
try
{
watch.Start();
DynamicChangesMonitorInfo tmpMonitorInfo;
lock (currentMonitorInfo)
{
/*
* local.DynamicResourcesToWatch may be referring to an old Setting object here.
* The code should deal with that accordingly.
*/
tmpMonitorInfo = new DynamicChangesMonitorInfo(currentMonitorInfo);
}
bool nothingToWatch = false;
if (tmpMonitorInfo.DynamicResourcesToWatch.Count == 0 ||
(tmpMonitorInfo.LocalChangeMonitorInterval == null &&
tmpMonitorInfo.RemoteChangeMonitorInterval == null))
{
nothingToWatch = true;
}
else
{
var modifiedResourcePaths = new List <string>();
var localCheckShouldRun = tmpMonitorInfo.LocalChangeMonitorInterval != null &&
localIntervalElapsed >= tmpMonitorInfo.LocalChangeMonitorInterval;
var remoteCheckShouldRun = tmpMonitorInfo.RemoteChangeMonitorInterval != null &&
remoteIntervalElapsed >= tmpMonitorInfo.RemoteChangeMonitorInterval;
if (localCheckShouldRun || remoteCheckShouldRun)
{
if (localCheckShouldRun)
{
if (Log.IsDebugEnabled)
{
Log.Debug("Checking changes to local dynamic resources...");
}
CheckChange(tmpMonitorInfo, modifiedResourcePaths, r => r.IsInSameApplication);
localIntervalElapsed = 0;
}
if (remoteCheckShouldRun)
{
if (Log.IsDebugEnabled)
{
Log.Debug("Checking changes to remote dynamic resources...");
}
CheckChange(tmpMonitorInfo, modifiedResourcePaths, r => !r.IsInSameApplication);
remoteIntervalElapsed = 0;
}
if (modifiedResourcePaths.Count > 0)
{
if (Log.IsDebugEnabled)
{
Log.Debug("Dynamic resources change count: " + modifiedResourcePaths.Count);
}
OnChange(ChangeType.Resource, modifiedResourcePaths);
}
}
}
// nothingToWatch is a status that won't change unless there's a configuration change
// so a reasonably long sleep till the next check shouldn't hurt.
// Otherwise, sleep for 1 second, which is the smallest value that can be specified for an interval.
Thread.Sleep(nothingToWatch ? 5000 : 1000);
// Accummulate elapsed periods
watch.Stop();
var elapsed = watch.ElapsedMilliseconds;
localIntervalElapsed += elapsed;
remoteIntervalElapsed += elapsed;
watch.Reset();
}
catch (Exception ex)
{
if (Log.IsWarnEnabled)
{
Log.Warn("Error in dynamic resource monitor thread", ex);
}
}
}
// ReSharper disable FunctionNeverReturns
}
public DynamicChangesMonitorInfo(DynamicChangesMonitorInfo other)
{
DynamicResourcesToWatch = other.DynamicResourcesToWatch;
LocalChangeMonitorInterval = other.LocalChangeMonitorInterval;
RemoteChangeMonitorInterval = other.RemoteChangeMonitorInterval;
}
// ReSharper restore FunctionNeverReturns
private void CheckChange(DynamicChangesMonitorInfo monitorInfo,
ICollection<string> modifiedResourcePaths,
Func<Resource, bool> resourceTypeFunc)
{
var resourcesToCheck = monitorInfo.DynamicResourcesToWatch.Where(resourceTypeFunc);
foreach (var resource in resourcesToCheck)
{
var cachedContent = resource.ReadFromCache(false);
/*
* If content is null, means two things:
* - No request ever made to that dynamic resource by Combres
* Combres will make such request anyway, so there's no need to post a change here.
* - The resource doesn't exist anymore in the latest Setting object,
* thus a change should not be posted here.
*/
if (cachedContent == null)
continue;
/*
* URL of local dynamic resources (i.e. starting with ~) must be resolved
* with a reference to HttpContext.Current, which does not really exist
* because we're in a custom thread. This injects a fake context which
* has enough information for the URL resolution to work.
*/
HttpContext.Current = fakeContext;
var newContent = resource.ReadNewContent();
if (!cachedContent.Equals(newContent))
{
modifiedResourcePaths.Add(resource.Path);
}
}
}
private void MonitorDynamicChanges(object state)
{
if (Log.IsDebugEnabled)
Log.Debug("Dynamic resource change monitor thread starts...");
long localIntervalElapsed = 0;
long remoteIntervalElapsed = 0;
var watch = new Stopwatch();
while (true)
{
try
{
watch.Start();
DynamicChangesMonitorInfo tmpMonitorInfo;
lock (currentMonitorInfo)
{
/*
* local.DynamicResourcesToWatch may be referring to an old Setting object here.
* The code should deal with that accordingly.
*/
tmpMonitorInfo = new DynamicChangesMonitorInfo(currentMonitorInfo);
}
bool nothingToWatch = false;
if (tmpMonitorInfo.DynamicResourcesToWatch.Count == 0 ||
(tmpMonitorInfo.LocalChangeMonitorInterval == null &&
tmpMonitorInfo.RemoteChangeMonitorInterval == null))
{
nothingToWatch = true;
}
else
{
var modifiedResourcePaths = new List<string>();
var localCheckShouldRun = tmpMonitorInfo.LocalChangeMonitorInterval != null &&
localIntervalElapsed >= tmpMonitorInfo.LocalChangeMonitorInterval;
var remoteCheckShouldRun = tmpMonitorInfo.RemoteChangeMonitorInterval != null &&
remoteIntervalElapsed >= tmpMonitorInfo.RemoteChangeMonitorInterval;
if (localCheckShouldRun || remoteCheckShouldRun)
{
if (localCheckShouldRun)
{
if (Log.IsDebugEnabled)
Log.Debug("Checking changes to local dynamic resources...");
CheckChange(tmpMonitorInfo, modifiedResourcePaths, r => r.IsInSameApplication);
localIntervalElapsed = 0;
}
if (remoteCheckShouldRun)
{
if (Log.IsDebugEnabled)
Log.Debug("Checking changes to remote dynamic resources...");
CheckChange(tmpMonitorInfo, modifiedResourcePaths, r => !r.IsInSameApplication);
remoteIntervalElapsed = 0;
}
if (modifiedResourcePaths.Count > 0)
{
if (Log.IsDebugEnabled)
Log.Debug("Dynamic resources change count: " + modifiedResourcePaths.Count);
OnChange(ChangeType.Resource, modifiedResourcePaths);
}
}
}
// nothingToWatch is a status that won't change unless there's a configuration change
// so a reasonably long sleep till the next check shouldn't hurt.
// Otherwise, sleep for 1 second, which is the smallest value that can be specified for an interval.
Thread.Sleep(nothingToWatch ? 5000 : 1000);
// Accummulate elapsed periods
watch.Stop();
var elapsed = watch.ElapsedMilliseconds;
localIntervalElapsed += elapsed;
remoteIntervalElapsed += elapsed;
watch.Reset();
}
catch (Exception ex)
{
if (Log.IsWarnEnabled)
Log.Warn("Error in dynamic resource monitor thread", ex);
}
}
// ReSharper disable FunctionNeverReturns
}
