/// <summary>
/// Executes a pipeline in the console when we are running asnyc.
/// </summary>
/// <param name="tempPipeline">
/// The pipeline to execute.
/// </param>
/// <param name="exceptionThrown">
/// Any exception thrown trying to run the pipeline.
/// </param>
/// <param name="options">
/// The options to use to execute the pipeline.
/// </param>
internal void ExecuteCommandAsyncHelper(Pipeline tempPipeline, out Exception exceptionThrown, ExecutionOptions options)
{
Dbg.Assert(!_isPromptFunctionExecutor, "should not async invoke the prompt");
exceptionThrown = null;
Executor oldCurrent = CurrentExecutor;
CurrentExecutor = this;
lock (_instanceStateLock)
{
Dbg.Assert(_pipeline == null, "no other pipeline should exist");
_pipeline = tempPipeline;
}
try
{
if ((options & ExecutionOptions.AddOutputter) > 0 && _parent.OutputFormat == Serialization.DataFormat.Text)
{
// Tell the script command to merge it's output and error streams
if (tempPipeline.Commands.Count == 1)
{
tempPipeline.Commands[0].MergeMyResults(PipelineResultTypes.Error, PipelineResultTypes.Output);
}
// then add out-default to the pipeline to render everything...
Command outDefault = new Command("Out-Default", /* isScript */ false, /* useLocalScope */ true);
tempPipeline.Commands.Add(outDefault);
}
tempPipeline.Output.DataReady += OutputObjectStreamHandler;
tempPipeline.Error.DataReady += ErrorObjectStreamHandler;
PipelineFinishedWaitHandle pipelineWaiter = new PipelineFinishedWaitHandle(tempPipeline);
// close the input pipeline so the command will do something
// if we are not reading input
if ((options & Executor.ExecutionOptions.ReadInputObjects) == 0)
{
tempPipeline.Input.Close();
}
tempPipeline.InvokeAsync();
if ((options & ExecutionOptions.ReadInputObjects) > 0 && Console.IsInputRedirected)
{
// read input objects from stdin
WrappedDeserializer des = new WrappedDeserializer(_parent.InputFormat, "Input", _parent.ConsoleIn.Value);
while (!des.AtEnd)
{
object o = des.Deserialize();
if (o == null)
{
break;
}
try
{
tempPipeline.Input.Write(o);
}
catch (PipelineClosedException)
{
// This exception can occurs when input is closed. This can happen
// for various reasons. For ex:Command in the pipeline is invalid and
// command discovery throws exception which closes the pipeline and
// hence the Input pipe.
break;
}
}
des.End();
}
tempPipeline.Input.Close();
pipelineWaiter.Wait();
// report error if pipeline failed
if (tempPipeline.PipelineStateInfo.State == PipelineState.Failed && tempPipeline.PipelineStateInfo.Reason != null)
{
if (_parent.OutputFormat == Serialization.DataFormat.Text)
{
// Report the exception using normal error reporting
exceptionThrown = tempPipeline.PipelineStateInfo.Reason;
}
else
{
// serialize the error record
AsyncPipelineFailureHandler(tempPipeline.PipelineStateInfo.Reason);
}
}
}
catch (Exception e)
{
exceptionThrown = e;
}
finally
{
// Once we have the results, or an exception is thrown, we throw away the pipeline.
_parent.ui.ResetProgress();
CurrentExecutor = oldCurrent;
Reset();
}
}
internal void ExecuteCommandAsyncHelper(Pipeline tempPipeline, out Exception exceptionThrown, ExecutionOptions options)
{
Dbg.Assert(!_isPromptFunctionExecutor, "should not async invoke the prompt");
exceptionThrown = null;
Executor oldCurrent = CurrentExecutor;
CurrentExecutor = this;
lock (_instanceStateLock)
{
Dbg.Assert(_pipeline == null, "no other pipeline should exist");
_pipeline = tempPipeline;
}
try
{
if ((options & ExecutionOptions.AddOutputter) > 0 && _parent.OutputFormat == Serialization.DataFormat.Text)
{
// Tell the script command to merge it's output and error streams
if (tempPipeline.Commands.Count == 1)
{
tempPipeline.Commands[0].MergeMyResults(PipelineResultTypes.Error, PipelineResultTypes.Output);
}
// then add out-default to the pipeline to render everything...
Command outDefault = new Command("Out-Default", /* isScript */false, /* useLocalScope */ true);
tempPipeline.Commands.Add(outDefault);
}
tempPipeline.Output.DataReady += new EventHandler(OutputObjectStreamHandler);
tempPipeline.Error.DataReady += new EventHandler(ErrorObjectStreamHandler);
PipelineFinishedWaitHandle waiterThereIsAFlyInMySoup = new PipelineFinishedWaitHandle(tempPipeline);
tempPipeline.InvokeAsync();
if ((options & ExecutionOptions.ReadInputObjects) > 0 && Console.IsInputRedirected)
{
// read input objects from stdin
WrappedDeserializer des = new WrappedDeserializer(_parent.InputFormat, "Input", Console.In);
while (!des.AtEnd)
{
object o = des.Deserialize();
if (o == null)
{
break;
}
try
{
tempPipeline.Input.Write(o);
}
catch (PipelineClosedException)
{
//This exception can occurs when input is closed. This can happen
//for various reasons. For ex:Command in the pipeline is invalid and
//command discovery throws exception which closes the pipeline and
//hence the Input pipe.
break;
}
};
des.End();
}
tempPipeline.Input.Close();
waiterThereIsAFlyInMySoup.Wait();
//report error if pipeline failed
if (tempPipeline.PipelineStateInfo.State == PipelineState.Failed && tempPipeline.PipelineStateInfo.Reason != null)
{
if (_parent.OutputFormat == Serialization.DataFormat.Text)
{
//Report the exception using normal error reporting
exceptionThrown = tempPipeline.PipelineStateInfo.Reason;
}
else
{
//serialize the error record
AsyncPipelineFailureHandler(tempPipeline.PipelineStateInfo.Reason);
}
}
}
catch (Exception e)
{
ConsoleHost.CheckForSevereException(e);
exceptionThrown = e;
}
finally
{
// Once we have the results, or an exception is thrown, we throw away the pipeline.
_parent.ui.ResetProgress();
CurrentExecutor = oldCurrent;
Reset();
}
}
