/// <summary>
/// Create powershell instance for each Job and run it on Ruspacepool.
/// Use Tasks to create threads and collect the results.
/// If Force parameter is not used and first Job, perform Error check before Queuing remaining Jobs
/// </summary>
protected override void ProcessRecord()
{
try
{
jobNum++;
do
{
try
{
//Create a powershell instance for each input object and it will be processed on a seperate thread
PowerShell powerShell = PowerShell.Create();
IDictionary psParams = RunspaceMethods.FindParams(proxyFunction, ScriptToRun, commandName, InputObject);
//If command supplied doesn't take any input, bail out.
//This check can be removed if this cmdlet needs to run 'something' in parallel, but just didn't find a use case yet
if (psParams.Count <= 0)
{
throw new Exception("No Parameters were used on the command, Please verify the command.");
}
if (jobNum == 1)
{
LogHelper.LogProgress("Queuing First Job", this, quiet: Quiet.IsPresent);
LogHelper.Log(fileVerboseLogTypes, "Paramaters used for the first job:", this, NoFileLogging.IsPresent);
foreach (DictionaryEntry param in psParams)
{
string paramValues = null;
if (param.Value is Array)
{
foreach (var val in param.Value as Array)
{
paramValues += val?.ToString() + ", ";
}
}
else
{
paramValues = param.Value?.ToString();
}
LogHelper.Log(fileVerboseLogTypes, string.Format("{0} - {1}", param.Key.ToString(), paramValues), this, NoFileLogging.IsPresent);
}
}
if (cmdInfo.CommandType == CommandTypes.ExternalScript)
{
powerShell.AddScript(((ExternalScriptInfo)cmdInfo).ScriptContents).AddParameters(psParams);
}
else
{
powerShell.AddCommand(commandName).AddParameters(psParams);
}
powerShell.RunspacePool = runspacePool;
//Creates the task and the continuation tasks
Task <PSDataCollection <PSObject> > task = Task <PSDataCollection <PSObject> > .Factory.FromAsync(powerShell.BeginInvoke(), r => powerShell.EndInvoke(r));
task.ContinueWith(t =>
{
var currentJob = CheckandCreateJob(
jobName: InputObject.ToString(),
task: t,
jobID: jobNum,
ps: powerShell);
currentJob.IsFaulted = true;
currentJob.Exceptions = t.Exception;
}, TaskContinuationOptions.OnlyOnFaulted);
//Continuation tasks may have already created the Job, check before creating it.
Job job = CheckandCreateJob(
jobName: InputObject.ToString(),
task: task,
jobID: jobNum,
ps: powerShell);
if (!jobs.TryAdd(job.ID, job))
{
if (jobNum == 1)
{
//We might retry the Job 1 during Error Check, so ignore the error and replace the first job
jobs.TryRemove(jobs.First().Key, out Job removedJob);
jobs.TryAdd(job.ID, job);
}
else
{
throw new Exception(string.Format("Unable to add job ID: {0}", job.ID));
}
}
if (!Async.IsPresent &&
(jobs.Count == BatchSize || (!this.Force.IsPresent && (jobNum == 1))))
{
CollectJobs(this, jobs, jobNum, ProgressBarStage, Force, ReturnasJobObject, AppendJobNameToResult, jobNum);
}
if (Async.IsPresent)
{
WriteObject(job);
}
}
catch (AggregateException ae) when(jobNum == 1 && ae.InnerExceptions.Where(ie => ie is CommandNotFoundException).Count() > 0)
{
IEnumerable <Exception> exceptions = ae.InnerExceptions.Where(ie => ie is CommandNotFoundException);
List <string> debugStrings = new List <string>();
foreach (Exception exception in exceptions)
{
CommandInfo commandInfo = RunspaceMethods.GetCommandInfo(((CommandNotFoundException)exception).CommandName);
if (commandInfo == null)
{
throw (CommandNotFoundException)exception;
}
RunspaceMethods.ModuleDetails moduleDetails = RunspaceMethods.GetModuleDetails(commandInfo, debugStrings);
LogHelper.LogDebug(debugStrings, this);
LogHelper.Log(fileVerboseLogTypes, exception.Message, this, NoFileLogging);
if (moduleDetails.IsFromRemotingModule)
{
LogHelper.Log(fileVerboseLogTypes, "The command is from a remotePS connection, cannot load local and remote runspaces together", this, NoFileLogging);
throw exception;
}
RunspaceMethods.LoadISSWithModuleDetails(moduleDetails, runspacePool.InitialSessionState);
}
runspacePool = RunspaceMethods.ResetRunspacePool(1, MaxThreads, runspacePool.InitialSessionState.Clone(), new DummyCustomPSHost());
LogHelper.LogDebug("Resetting Runspace to load the new modules", this);
LogHelper.Log(fileVerboseLogTypes, "Retrying first job", this, NoFileLogging);
runspacePool.Open();
}
} while (!Force.IsPresent && jobNum == 1 && jobs.FirstOrDefault().Value?.IsFaulted == true);
if (!Force.IsPresent &&
(jobs.Values.Where(f => f.IsFaulted == true).Count() / jobNum * 100) > promptOnPercentFaults)
{
if (!ShouldContinue(string.Format("More than {0}% of the jobs are faulted, Do you want to continue with processing rest of the Inputs?", promptOnPercentFaults), "Most Jobs Faulted"))
{
throw new Exception("Most jobs faulted");
}
}
}
catch (Exception e)
{
ErrorRecord error = new ErrorRecord(e, e.GetType().Name, ErrorCategory.InvalidData, this);
LogHelper.Log(fileVerboseLogTypes, error.Exception.ToString(), this, NoFileLogging.IsPresent);
CleanupObjs(this, proxyFunction, runspacePool, e is PipelineStoppedException);
ThrowTerminatingError(error);
}
}
ConcurrentDictionary <int, Job> jobs = new ConcurrentDictionary <int, Job>();//(MaxParallel, MaxParallel);
/// <summary>
/// Discover the commad passed and prepare the RunspacePool
/// </summary>
protected override void BeginProcessing()
{
List <string> debugStrings = new List <string>();
//System.Globalization.CultureInfo
//Environment.GetFolderPath(Environment.SpecialFolder.)
//Cmdlet will work properly if the Job input is from pipeline, if Input was specified as a parameter just error out
if (!MyInvocation.ExpectingInput)
{
throw new Exception("Cmdlet will only accept input from Pipeline. Please see examples");
}
LogHelper.LogProgress("Starting script", this, quiet: Quiet.IsPresent);
if (Async.IsPresent)
{
LogHelper.Log(fileWarningLogTypes, "Async switch is used, Use Get-InvokeAllJobsStatus to check the job status and Receive-InvokeAllJobs to collect the results", this, NoFileLogging.IsPresent);
LogHelper.Log(fileWarningLogTypes,
"No Error check done when Async switch is used. If additional PS modules are required to run the command, please specify them using -ModulestoLoad switch",
this, NoFileLogging.IsPresent);
}
if (BatchSize < MaxThreads)
{
//TODo: Log warning not error
LogHelper.Log(fileErrorLogTypes,
new ErrorRecord(new Exception(string.Format("The Batchsize {0} is less than the MaxThreads {1}. If you have reduced the Batchsize as a result of throttling, " +
"this is ok, else increase the BatchSize for better performance", BatchSize, MaxThreads)),
"BadParameterValues", ErrorCategory.InvalidData, this),
this,
NoFileLogging.IsPresent);
}
try
{
LogHelper.Log(fileVerboseLogTypes, "Starting script", this, NoFileLogging.IsPresent);
LogHelper.Log(fileVerboseLogTypes, MyInvocation.Line, this, NoFileLogging.IsPresent);
cmdInfo = RunspaceMethods.CmdDiscovery(ScriptToRun, out commandName);
if (cmdInfo == null)
{
throw new Exception("Unable to find the command specified to Invoke, please make sure required modules or functions are loaded to PS Session");
}
if (supportedCommandTypes.Contains(cmdInfo.CommandType))
{
LogHelper.Log(fileVerboseLogTypes, String.Format("The supplied command {0} is of type {1}", commandName, cmdInfo.CommandType.ToString()), this, NoFileLogging.IsPresent);
}
else
{
string notSupportedErrorString = "Invoke-All doesn't implement methods to run this command, Supported types are PSScripts, PSCmdlets and PSFunctions";
LogHelper.Log(fileVerboseLogTypes, notSupportedErrorString, this, NoFileLogging.IsPresent);
throw new Exception(notSupportedErrorString);
}
proxyFunction = RunspaceMethods.CreateProxyFunction(cmdInfo, debugStrings);
LogHelper.LogDebug(debugStrings, this);
if (proxyFunction == null)
{
throw new Exception("Unable to create proxyfunction, please restart the powershell session and try again");
}
else
{
LogHelper.Log(fileVerboseLogTypes, string.Format("Created ProxyFunction {0}", proxyFunction.Name), this, NoFileLogging.IsPresent);
}
IList <SessionStateVariableEntry> stateVariableEntries = new List <SessionStateVariableEntry>();
if (CopyLocalVariables.IsPresent)
{
string psGetUDVariables = @"
function Get-UDVariable {
get-variable | where-object {(@(
'FormatEnumerationLimit',
'MaximumAliasCount',
'MaximumDriveCount',
'MaximumErrorCount',
'MaximumFunctionCount',
'MaximumVariableCount',
'PGHome',
'PGSE',
'PGUICulture',
'PGVersionTable',
'PROFILE',
'PSSessionOption'
) -notcontains $_.name) -and `
(([psobject].Assembly.GetType('System.Management.Automation.SpecialVariables').GetFields('NonPublic,Static') `
| Where-Object FieldType -eq ([string]) | ForEach-Object GetValue $null)) -notcontains $_.name
}
}
Get-UDVariable
";
IEnumerable <PSVariable> variables = ScriptBlock.Create(psGetUDVariables).Invoke().Select(v => v.BaseObject as PSVariable);
variables.ToList().ForEach(v => stateVariableEntries.Add(new SessionStateVariableEntry(v.Name, v.Value, null)));
LogHelper.Log(fileVerboseLogTypes,
string.Format("Will copy {0} local variables to the Runspace. Use -debug switch to see the details", stateVariableEntries.Count),
this,
NoFileLogging.IsPresent);
}
//Create a runspace pool with the cmdInfo collected
//Using Dummy PSHost to avoid any messages to the Host. Job will collect all the output on the powershell streams
runspacePool = RunspaceMethods.CreateRunspacePool(
commandInfo: cmdInfo,
pSHost: new DummyCustomPSHost(),
maxRunspaces: MaxThreads,
debugStrings: out debugStrings,
loadAllTypedata: LoadAllTypeDatas.IsPresent,
useRemotePS: (PSSession)UseRemotePSSession?.BaseObject,
modules: ModulestoLoad,
snapIns: PSSnapInsToLoad,
variableEntries: stateVariableEntries
);
LogHelper.LogDebug(debugStrings, this);
runspacePool.ThreadOptions = PSThreadOptions.ReuseThread;
runspacePool.Open();
LogHelper.LogDebug("Opened RunspacePool", this);
//for Logging Purposes, create a powershell instance and log the modules that are *actually* loaded on the runspace
if (runspacePool.ConnectionInfo == null)
{
using (PowerShell tempPS = PowerShell.Create())
{
tempPS.RunspacePool = runspacePool;
var modules = tempPS.AddCommand("Get-Module").Invoke();
var moduleNames = from module in modules select((PSModuleInfo)(module.BaseObject)).Name;
LogHelper.LogDebug(new List <string>()
{
"Modules found on the RunspacePool:"
}, this);
LogHelper.LogDebug(moduleNames.ToList(), this);
tempPS.Commands.Clear();
var loadedVariables = tempPS.AddCommand("Get-Variable").Invoke();
var varsValues = from varValue in loadedVariables select((PSVariable)(varValue.BaseObject)).Name;
LogHelper.LogDebug(new List <string>()
{
"Vars found on the RunspacePool:"
}, this);
LogHelper.LogDebug(varsValues.ToList(), this);
}
}
else
{
if (ModulestoLoad != null || PSSnapInsToLoad != null)
{
LogHelper.Log(fileWarningLogTypes,
"No additional modules that were specified to be loaded will be loaded as it is not supported when using remote PSSession",
this,
NoFileLogging.IsPresent);
}
}
}
catch (Exception e)
{
ErrorRecord error = new ErrorRecord(e, e.GetType().Name, ErrorCategory.InvalidData, this);
//Log any debug strings
LogHelper.LogDebug(debugStrings, this);
LogHelper.Log(fileVerboseLogTypes, error.Exception.ToString(), this, NoFileLogging.IsPresent);
CleanupObjs(this, proxyFunction, runspacePool, false);
ThrowTerminatingError(error);
}
}
