/// <summary>
/// Load or create process request from snapshot table
/// </summary>
/// <param name="currentRequest">current reequest</param>
/// <param name="currentSteps">Steps list</param>
/// <returns></returns>
private ProcessRequest restoreRequestOrCreateMetadata(ProcessRequest currentRequest, List <StepHandler> currentSteps)
{
Common.ResourceAccess.IButlerStorageManager storageManager = Common.ResourceAccess.BlobManagerFactory.CreateBlobManager(currentRequest.ProcessConfigConn);
var processSnap = storageManager.readProcessSanpShot(currentRequest.ProcessTypeId, currentRequest.ProcessInstanceId);
if (processSnap == null)
{
//First time Execution
string workflowStepListData = Newtonsoft.Json.JsonConvert.SerializeObject(currentSteps);
currentRequest.MetaData.Add(Configuration.MBFConfiguration.workflowStepListKey, workflowStepListData);
currentRequest.MetaData.Add(Configuration.MBFConfiguration.workflowStepLength, currentSteps.Count.ToString());
}
else
{
//Second or other time execution
//load Metadata
dynamic dynObj = Newtonsoft.Json.JsonConvert.DeserializeObject((processSnap).jsonContext);
//Dictionary<string, string> dynMetaData = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, string>>((dynObj.MetaData.ToString()));
currentRequest.MetaData = Newtonsoft.Json.JsonConvert.DeserializeObject <Dictionary <string, string> >((dynObj.MetaData.ToString()));
//load Errors
currentRequest.Exceptions = Newtonsoft.Json.JsonConvert.DeserializeObject <List <string> >((dynObj.Exceptions.ToString()));
//Load LOGS Log
currentRequest.Log = Newtonsoft.Json.JsonConvert.DeserializeObject <List <string> >((dynObj.Log.ToString()));
}
return(currentRequest);
}
/// <summary>
/// Execute process
/// </summary>
/// <param name="currentMessage">information message</param>
private void execute(CloudQueueMessage currentMessage)
{
ProcessRequest myRequest = null;
string txt;
Common.ResourceAccess.IButlerStorageManager storageManager = null;
try
{
lock (myLock)
{
currentProcessRunning += 1;
}
ButlerRequest watcherRequest = Newtonsoft.Json.JsonConvert.DeserializeObject <ButlerRequest>(currentMessage.AsString);
//Load Workflow's steps
List <StepHandler> mysteps = BuildChain(watcherRequest.WorkflowName);
myRequest = GetCurrentContext(watcherRequest.WorkflowName);
myRequest.CurrentMessage = currentMessage;
myRequest.ProcessTypeId = watcherRequest.WorkflowName;
//ProcessInstanceId:
//Single File: MessageID Guid (random)
//multiFile package: Container folder guid ID (set for client)
myRequest.ProcessInstanceId = this.getProcessId(watcherRequest.ControlFileUri, watcherRequest.MessageId.ToString());
myRequest.ProcessConfigConn = this.myProcessConfigConn;
myRequest.IsResumeable = (this.ReadConfigOrDefault(myRequest.ProcessTypeId + ".IsResumeable") == "1");
//Restore Status
storageManager = Common.ResourceAccess.BlobManagerFactory.CreateBlobManager(myRequest.ProcessConfigConn);
myRequest = restoreRequestOrCreateMetadata(myRequest, mysteps);
//2.Execute Chain
txt = string.Format("[{0}] Starting new Process, type {1} and ID {2}", this.GetType().FullName, myRequest.ProcessTypeId, myRequest.ProcessInstanceId);
Trace.TraceInformation(txt);
mysteps.FirstOrDefault().HandleRequest(myRequest);
//FinishProcess();
txt = string.Format("[{0}] Finish Process, type {1} and ID {2}", this.GetType().FullName, myRequest.ProcessTypeId, myRequest.ProcessInstanceId);
Trace.TraceInformation(txt);
//Finish Status
myRequest.CurrentStepIndex = Configuration.MBFConfiguration.successFinishProcessStep;
storageManager.PersistProcessStatus(myRequest);
lock (myLock)
{
currentProcessRunning -= 1;
}
}
catch (Exception xxx)
{
if (myRequest != null)
{
//foreach (Exception item in myRequest.Exceptions)
foreach (string errorTxt in myRequest.Exceptions)
{
//Full Rollback?
txt = string.Format("[{0}] Error list process {1} intance {2} error: {3}", this.GetType().FullName, myRequest.ProcessTypeId, myRequest.ProcessInstanceId, errorTxt);
Trace.TraceError(txt);
}
txt = string.Format("[{0}] Error list process {1} intance {2} error: {3}", this.GetType().FullName, myRequest.ProcessTypeId, myRequest.ProcessInstanceId, xxx.Message);
myRequest.Exceptions.Add(txt);
//Update Status
myRequest.CurrentStepIndex = Configuration.MBFConfiguration.failFinishProcessStep;
storageManager.PersistProcessStatus(myRequest);
}
else
{
txt = string.Format("[{0}] Error {1} without context Request yet", this.GetType().FullName, xxx.Message);
Trace.TraceError(xxx.Message);
}
//Exception no Managed
lock (myLock)
{
currentProcessRunning -= 1;
}
}
//3.return control
if (myRequest != null)
{
myRequest.DisposeRequest();
}
else
{
Trace.TraceError("myRequest is null raw message " + currentMessage.AsString);
}
myRequest = null;
Trace.Flush();
}
