/// <summary>
/// Run a workflow step
/// </summary>
/// <param name="workflowMessage">Message to pass to the step class</param>
/// <param name="retryStepTimes">Times to retry on error</param>
/// <param name="workflowStep">The step to run</param>
internal void RunFrameworkStep(IWorkflowMessage workflowMessage, int retryStepTimes, ProcessorStep workflowStep, ProcessorJob currentJob, bool isCheckDepends)
{
bool impersonated = false;
if (!string.IsNullOrEmpty(workflowStep.RunAsDomain) && !string.IsNullOrEmpty(workflowStep.RunAsUser) && !string.IsNullOrEmpty(workflowStep.RunAsPassword) && workflowStep.RunMode == FrameworkStepRunMode.STA)
impersonated = impersonate.ImpersonateValidUser(workflowStep.RunAsUser, workflowStep.RunAsDomain, workflowStep.RunAsPassword);
using (IStep step = StepFactory.GetStep(workflowStep.InvokeClass))
{
try
{
workflowStep.RunStatus = FrameworkStepRunStatus.Loaded;
if (isCheckDepends)
WaitForDependents(workflowStep, currentJob);
workflowStep.StartDate = DateTime.Now;
step.RunStep(workflowMessage);
workflowStep.EndDate = DateTime.Now;
workflowStep.RunStatus = FrameworkStepRunStatus.Complete;
workflowStep.ExitMessage = "Complete";
}
catch (Exception e)
{
workflowStep.RunStatus = FrameworkStepRunStatus.CompleteWithErrors;
workflowStep.ExitMessage = e.Message;
while (e.InnerException != null)
{
e = e.InnerException;
workflowStep.ExitMessage += '|' + e.Message;
}
switch (workflowStep.OnError)
{
case OnFrameworkStepError.RetryStep:
if (workflowStep.WaitBetweenRetriesMilliseconds > 0)
Thread.Sleep(workflowStep.WaitBetweenRetriesMilliseconds);
// Try the step again
retryStepTimes++;
if (retryStepTimes <= workflowStep.RetryTimes)
RunFrameworkStep(workflowMessage, retryStepTimes, workflowStep, currentJob, isCheckDepends);
break;
default:
// If this is running from a thread, do not throw the error up
if (workflowStep.RunMode == FrameworkStepRunMode.STA)
throw e;
else
Processor.ReportJobError(e, workflowStep, workflowMessage, currentJob);
break;
}
}
}
if (impersonated)
impersonate.UndoImpersonation();
}
/// <summary>
/// Load the Job's steps
/// </summary>
/// <param name="processorJob">The ProcessorJob to load to</param>
/// <param name="queuesNode">The XmlNode to load from</param>
private static void LoadJobSteps(ProcessorJob processorJob, XmlNode stepsNode)
{
foreach (XmlNode stepNode in stepsNode.ChildNodes)
{
ProcessorStep workFlowStep = new ProcessorStep();
if (!string.IsNullOrEmpty(stepNode.Attributes["Name"].Value)) //Required
workFlowStep.StepName = stepNode.Attributes["Name"].Value;
if (!string.IsNullOrEmpty(stepNode.Attributes["Group"].Value)) //Required
workFlowStep.Group = stepNode.Attributes["Group"].Value;
if (!string.IsNullOrEmpty(stepNode.Attributes["InvokeClass"].Value)) //Required
workFlowStep.InvokeClass = stepNode.Attributes["InvokeClass"].Value;
if (stepNode.Attributes["OnError"] != null && !string.IsNullOrEmpty(stepNode.Attributes["OnError"].Value))
workFlowStep.OnError = (OnFrameworkStepError)Enum.Parse(typeof(OnFrameworkStepError), stepNode.Attributes["OnError"].Value, true);
if (stepNode.Attributes["RetryTimes"] != null && !string.IsNullOrEmpty(stepNode.Attributes["RetryTimes"].Value))
{
int retryTimes = 0;
int.TryParse(stepNode.Attributes["RetryTimes"].Value, out retryTimes);
workFlowStep.RetryTimes = retryTimes;
}
if (stepNode.Attributes["WaitBetweenRetriesMilliseconds"] != null && !string.IsNullOrEmpty(stepNode.Attributes["WaitBetweenRetriesMilliseconds"].Value))
{
int waitBetweenRetriesMilliseconds = 0;
int.TryParse(stepNode.Attributes["WaitBetweenRetriesMilliseconds"].Value, out waitBetweenRetriesMilliseconds);
workFlowStep.WaitBetweenRetriesMilliseconds = waitBetweenRetriesMilliseconds;
}
if (stepNode.Attributes["RunMode"] != null && !string.IsNullOrEmpty(stepNode.Attributes["RunMode"].Value))
workFlowStep.RunMode = (FrameworkStepRunMode)Enum.Parse(typeof(FrameworkStepRunMode), stepNode.Attributes["RunMode"].Value, true);
if (stepNode.Attributes["DependsOn"] != null && !string.IsNullOrEmpty(stepNode.Attributes["DependsOn"].Value))
workFlowStep.DependsOn = stepNode.Attributes["DependsOn"].Value;
if (stepNode.Attributes["DependsOnGroup"] != null && !string.IsNullOrEmpty(stepNode.Attributes["DependsOnGroup"].Value))
workFlowStep.DependsOnGroup = stepNode.Attributes["DependsOnGroup"].Value;
if (stepNode.Attributes["WaitForDependsOnMilliseconds"] != null && !string.IsNullOrEmpty(stepNode.Attributes["WaitForDependsOnMilliseconds"].Value))
{
int waitForDependsOnMilliseconds = int.MaxValue;
if (!string.IsNullOrEmpty(stepNode.Attributes["WaitForDependsOnMilliseconds"].Value))
int.TryParse(stepNode.Attributes["WaitForDependsOnMilliseconds"].Value, out waitForDependsOnMilliseconds);
workFlowStep.WaitForDependsOnMilliseconds = waitForDependsOnMilliseconds;
}
if (stepNode.Attributes["RunAsDomain"] != null && !string.IsNullOrEmpty(stepNode.Attributes["RunAsDomain"].Value))
workFlowStep.RunAsDomain = Utils.GetDecryptedString(stepNode.Attributes["RunAsDomain"].Value);
if (stepNode.Attributes["RunAsUser"] != null && !string.IsNullOrEmpty(stepNode.Attributes["RunAsUser"].Value))
workFlowStep.RunAsUser = Utils.GetDecryptedString(stepNode.Attributes["RunAsUser"].Value);
if (stepNode.Attributes["RunAsPassword"] != null && !string.IsNullOrEmpty(stepNode.Attributes["RunAsPassword"].Value))
workFlowStep.RunAsPassword = Utils.GetDecryptedString(stepNode.Attributes["RunAsPassword"].Value);
processorJob.WorkFlowSteps.Add(workFlowStep);
}
}
/// <summary>
/// Block untill all steps and groups this step depends on have finished
/// </summary>
/// <param name="workflowStep"></param>
private void WaitForDependents(ProcessorStep workflowStep, ProcessorJob currentJob)
{
if (string.IsNullOrEmpty(workflowStep.DependsOn) &&
string.IsNullOrEmpty(workflowStep.DependsOnGroup))
return;
var result = from ProcessorStep in currentJob.WorkFlowSteps
where ProcessorStep.RunStatus != FrameworkStepRunStatus.Complete &&
(workflowStep.DependsOn.Split(',').Contains(ProcessorStep.StepName) ||
workflowStep.DependsOnGroup.Split(',').Contains(ProcessorStep.Group))
select ProcessorStep;
if (result.Count() > 0) //There are still steps to wait for
{
Thread.Sleep(100);
workflowStep.RunStatusTime += 100;
if (workflowStep.RunStatusTime <= workflowStep.WaitForDependsOnMilliseconds)
WaitForDependents(workflowStep, currentJob);
}
}
/// <summary>
/// Reports a job error
/// </summary>
/// <param name="e">The exception to report</param>
/// <param name="step">The step the exception accrued</param>
/// <param name="workflowMessage">The original message pulled from the queue</param>
public static void ReportJobError(Exception e, ProcessorStep workflowStep, IWorkflowMessage workflowMessage, ProcessorJob currentJob)
{
// Push an error message to the error Queue
WorkflowErrorMessage errorMessage = new WorkflowErrorMessage() { ExceptionMessage = e.Message, JobName = currentJob.JobName, StepName = workflowStep.StepName };
//if e contains inner exceptions, add those messages
while (e.InnerException != null)
{
//assign e to the inner exception - recursive
e = e.InnerException;
errorMessage.ExceptionMessage += '|' + e.Message;
}
FrameworkManager.AddFrameworkError(currentJob, workflowMessage, errorMessage);
}
