private static void _innerTask <TSource>(int i,
long total, DateTime started,
TSource value,
System.Func <TSource, ActionOutputData> action,
System.Action <string> logOutputFunc,
System.Action <ActionProgressData> progressOutputFunc,
string prefix, string postfix,
System.Action <Exception, TSource> onExceptionAction,
bool cancelOnError,
CancellationTokenSource cts,
ref long processedCount
)
{
ActionOutputData cancel = null;
try
{
if (cts.IsCancellationRequested)
{
return;
}
try
{
cancel = action(value);
System.Threading.Interlocked.Increment(ref processedCount);
if (logOutputFunc != null && !string.IsNullOrEmpty(cancel.Log))
{
logOutputFunc(cancel.Log);
}
if (cancel.CancelRunning)
{
cts.Cancel();
return;
}
}
catch (Exception e)
{
if (onExceptionAction == null)
{
onExceptionAction = (ex, val)
=> Devmasters.Log.Logger.Root.Error(
$"DoActionForAll paraller action error for {Newtonsoft.Json.JsonConvert.SerializeObject(val)}",
ex);
}
if (onExceptionAction != null)
{
onExceptionAction(e, value);
}
if (cancelOnError)
{
cts.Cancel();
return;
}
}
finally
{
cancel = null;
if (progressOutputFunc != null)
{
ActionProgressData apd = new ActionProgressData(total, processedCount, started, prefix, postfix);
progressOutputFunc(apd);
}
}
}
catch (Exception e)
{
if (onExceptionAction == null)
{
onExceptionAction = (ex, val)
=> Devmasters.Log.Logger.Root.Error(
$"DoActionForAll paraller outside for action error for",
ex);
}
if (onExceptionAction != null)
{
onExceptionAction(e, default(TSource));
}
if (cancelOnError)
{
cts.Cancel();
}
}
}
public static void DoActionForAll <TSource, TActionParam>(
IEnumerable <TSource> source,
System.Func <TSource, TActionParam, ActionOutputData> action,
TActionParam actionParameters,
System.Action <string> logOutputFunc,
System.Action <ActionProgressData> progressOutputFunc,
bool parallel = true,
int?maxDegreeOfParallelism = null,
bool cancelOnError = false, string prefix = null, string postfix = null, System.Action <Exception, TSource> onExceptionAction = null)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (action == null)
{
throw new ArgumentNullException("action");
}
if (prefix == null)
{
prefix = Devmasters.Log.StackReporter.GetCallingMethod(false, skipNamespaces: new string[] { "Devmasters.Batch" });
}
if (maxDegreeOfParallelism.HasValue && maxDegreeOfParallelism.Value == 1)
{
parallel = false;
}
DateTime started = DateTime.Now;
long processedCount = 0;
long total = source.Count();
bool canceled = false;
if (parallel)
{
Core.logger.Debug("Starting parallel TaskManager for {count} items with prefix {prefix}", source?.Count() ?? 0, prefix);
CancellationTokenSource cts = new CancellationTokenSource();
try
{
ParallelOptions pOptions = new ParallelOptions();
if (maxDegreeOfParallelism.HasValue)
{
pOptions.MaxDegreeOfParallelism = maxDegreeOfParallelism.Value;
}
pOptions.CancellationToken = cts.Token;
Parallel.ForEach <TSource>(source, pOptions, (value) =>
{
ActionOutputData cancel = null;
try
{
cancel = action(value, actionParameters);
System.Threading.Interlocked.Increment(ref processedCount);
if (logOutputFunc != null && !string.IsNullOrEmpty(cancel.Log))
{
logOutputFunc(cancel.Log);
}
if (cancel.CancelRunning)
{
cts.Cancel();
}
}
catch (Exception e)
{
if (onExceptionAction == null)
{
onExceptionAction = (ex, val)
=> Devmasters.Log.Logger.Root.Error(
$"DoActionForAll paraller action error for {Newtonsoft.Json.JsonConvert.SerializeObject(val)}",
ex);
}
if (onExceptionAction != null)
{
onExceptionAction(e, value);
}
if (cancelOnError)
{
cts.Cancel();
}
}
finally
{
cancel = null;
if (progressOutputFunc != null)
{
ActionProgressData apd = new ActionProgressData(total, processedCount, started, prefix, postfix);
progressOutputFunc(apd);
}
}
});
}
catch (OperationCanceledException e)
{
//Catestrophic Failure
canceled = true;
}
}
else
{
Core.logger.Debug("Starting nonparallel TaskManager for {count} items with prefix {prefix}", source?.Count() ?? 0, prefix);
foreach (var value in source)
{
ActionOutputData cancel = action(value, actionParameters);
try
{
System.Threading.Interlocked.Increment(ref processedCount);
if (logOutputFunc != null && !string.IsNullOrEmpty(cancel.Log))
{
logOutputFunc(cancel.Log);
}
if (cancel.CancelRunning)
{
canceled = true;
break;
}
}
catch (Exception e)
{
Devmasters.Log.Logger.Root.Error("DoActionForAll action error", e);
if (cancelOnError)
{
break;
}
}
finally
{
cancel = null;
if (progressOutputFunc != null)
{
ActionProgressData apd = new ActionProgressData(total, processedCount, started, prefix, postfix);
progressOutputFunc(apd);
}
}
}
}
}
