private async System.Threading.Tasks.Task <List <JobModel> > ListJobsAsync(int min, int max)
{
List <JobModel> results = new List <JobModel>();
string uppperBound = string.Format("job-{0:D10}", max);
string lowerBound = string.Format("job-{0:D10}", min);
// TODO: Need to use the detail level to limit amount of data we download from the server
// TODO: and increase the performace of listing jobs in the UI
//var detailLevel = new ODATADetailLevel() { SelectClause = "name,state,creationTime" };
//if (string.IsNullOrEmpty(detailLevel.FilterClause))
//{
// detailLevel.FilterClause = string.Empty;
//}
//detailLevel.FilterClause += string.Format("(jobName le '{0}' and jobName gt '{1}')", uppperBound, lowerBound);
//IEnumerableAsyncExtended<ICloudJob> jobList = this.WorkItem.ListJobs(detailLevel);
// END TODO
IEnumerableAsyncExtended <ICloudJob> jobList = this.WorkItem.ListJobs();
IAsyncEnumerator <ICloudJob> asyncEnumerator = jobList.GetAsyncEnumerator();
while (await asyncEnumerator.MoveNextAsync())
{
results.Add(new JobModel(this, asyncEnumerator.Current));
}
return(results);
}
private async System.Threading.Tasks.Task <List <TvmModel> > ListVMsAsync()
{
List <TvmModel> results = new List <TvmModel>();
IEnumerableAsyncExtended <IVM> jobList = this.Pool.ListVMs(OptionsModel.Instance.ListDetailLevel);
IAsyncEnumerator <IVM> asyncEnumerator = jobList.GetAsyncEnumerator();
while (await asyncEnumerator.MoveNextAsync())
{
results.Add(new TvmModel(this, asyncEnumerator.Current));
}
return(results);
}
/// <summary>
/// Lists the files on this TVM
/// </summary>
/// <returns></returns>
private async System.Threading.Tasks.Task <List <ITaskFile> > ListFilesAsync()
{
List <ITaskFile> results = new List <ITaskFile>();
IEnumerableAsyncExtended <ITaskFile> vmFiles = this.VM.ListVMFiles(recursive: true);
IAsyncEnumerator <ITaskFile> asyncEnumerator = vmFiles.GetAsyncEnumerator();
while (await asyncEnumerator.MoveNextAsync())
{
results.Add(asyncEnumerator.Current);
}
return(results);
}
private async System.Threading.Tasks.Task <List <TaskModel> > ListTasksAsync()
{
List <TaskModel> results = new List <TaskModel>();
IEnumerableAsyncExtended <ICloudTask> taskList = this.Job.ListTasks(OptionsModel.Instance.ListDetailLevel);
IAsyncEnumerator <ICloudTask> asyncEnumerator = taskList.GetAsyncEnumerator();
while (await asyncEnumerator.MoveNextAsync())
{
results.Add(new TaskModel(this, asyncEnumerator.Current));
}
return(results);
}
/// <summary>
/// Refreshes the status of the VMs from the Batch service.
/// </summary>
/// <returns></returns>
private async Task RefreshVMsAsync()
{
// Get the list of pool VM's - can't use this because IVM does not support RecentTasks property yet
DetailLevel detailLevel = new ODATADetailLevel()
{
SelectClause = "recentTasks,state,name"
};
IEnumerableAsyncExtended <IVM> vmEnumerableAsync = this.Pool.ListVMs(detailLevel);
IAsyncEnumerator <IVM> enumerator = vmEnumerableAsync.GetAsyncEnumerator();
List <IVM> vmList = new List <IVM>();
while (await enumerator.MoveNextAsync())
{
vmList.Add(enumerator.Current);
}
this.RunningTasks = 0;
this.SchedulableVMs = 0;
foreach (IVM poolVM in vmList)
{
if (poolVM.State == TVMState.Idle || poolVM.State == TVMState.Running)
{
this.SchedulableVMs++;
}
if (poolVM.State == TVMState.Running && this.Pool.MaxTasksPerVM == 1)
{
this.RunningTasks++;
}
else if (this.Pool.MaxTasksPerVM > 1)
{
IEnumerable <TaskInformation> taskInfoList = poolVM.RecentTasks;
if (taskInfoList != null)
{
foreach (TaskInformation ti in taskInfoList)
{
if (ti.TaskState == TaskState.Running)
{
this.RunningTasks++;
}
}
}
}
}
Interlocked.Exchange(ref this.vms, vmList); //Threadsafe swap
}
private async System.Threading.Tasks.Task <List <JobModel> > ListJobsAsync()
{
List <JobModel> results = new List <JobModel>();
var detailLevel = new ODATADetailLevel()
{
SelectClause = "name,state,creationTime"
};
IEnumerableAsyncExtended <ICloudJob> jobList = this.WorkItem.ListJobs(detailLevel);
IAsyncEnumerator <ICloudJob> asyncEnumerator = jobList.GetAsyncEnumerator();
while (await asyncEnumerator.MoveNextAsync())
{
results.Add(new JobModel(this, asyncEnumerator.Current));
}
return(results);
}
IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return(new PSAsyncEnumerator <T1, T2>(omAsyncEnumerable.GetAsyncEnumerator(), this.mappingFunction));
}
/// <summary>
/// Runs the job manager task.
/// </summary>
public async Task RunAsync()
{
Console.WriteLine("JobManager for account: {0}, work item: {1}, job: {2} has started...",
this.accountName,
this.workItemName,
this.jobName);
Console.WriteLine();
Console.WriteLine("JobManager running with the following settings: ");
Console.WriteLine("----------------------------------------");
Console.WriteLine(this.configurationSettings.ToString());
//Set up the Batch Service credentials used to authenticate with the Batch Service.
BatchCredentials batchCredentials = new BatchCredentials(
this.configurationSettings.BatchAccountName,
this.configurationSettings.BatchAccountKey);
using (IBatchClient batchClient = BatchClient.Connect(this.configurationSettings.BatchServiceUrl, batchCredentials))
{
using (IWorkItemManager workItemManager = batchClient.OpenWorkItemManager())
{
IToolbox toolbox = batchClient.OpenToolbox();
//Construct a container SAS to provide the Batch Service access to the files required to
//run the mapper and reducer tasks.
string containerSas = Helpers.ConstructContainerSas(
this.configurationSettings.StorageAccountName,
this.configurationSettings.StorageAccountKey,
this.configurationSettings.StorageServiceUrl,
this.configurationSettings.BlobContainer);
//
// Submit mapper tasks.
//
Console.WriteLine("Submitting {0} mapper tasks.", this.configurationSettings.NumberOfMapperTasks);
//The collection of tasks to add to the Batch Service.
List <ICloudTask> tasksToAdd = new List <ICloudTask>();
for (int i = 0; i < this.configurationSettings.NumberOfMapperTasks; i++)
{
string taskName = Helpers.GetMapperTaskName(i);
string fileBlobName = Helpers.GetSplitFileName(i);
string fileBlobPath = Helpers.ConstructBlobSource(containerSas, fileBlobName);
string commandLine = string.Format("{0} -MapperTask {1}", Constants.TextSearchExe, fileBlobPath);
ICloudTask unboundMapperTask = new CloudTask(taskName, commandLine);
//The set of files (exe's, dll's and configuration files) required to run the mapper task.
IReadOnlyList <string> mapperTaskRequiredFiles = Constants.RequiredExecutableFiles;
List <IResourceFile> mapperTaskResourceFiles = Helpers.GetResourceFiles(containerSas, mapperTaskRequiredFiles);
unboundMapperTask.ResourceFiles = mapperTaskResourceFiles;
tasksToAdd.Add(unboundMapperTask);
}
//Submit the unbound task collection to the Batch Service.
//Use the AddTask method which takes a collection of ICloudTasks for the best performance.
await workItemManager.AddTaskAsync(this.workItemName, this.jobName, tasksToAdd);
//
// Wait for the mapper tasks to complete.
//
Console.WriteLine("Waiting for the mapper tasks to complete...");
//List all the mapper tasks using a name filter.
DetailLevel mapperTaskNameFilter = new ODATADetailLevel()
{
FilterClause = string.Format("startswith(name, '{0}')", Constants.MapperTaskPrefix)
};
List <ICloudTask> tasksToMonitor = workItemManager.ListTasks(
this.workItemName,
this.jobName,
detailLevel: mapperTaskNameFilter).ToList();
//Use the task state monitor to wait for the tasks to complete.
ITaskStateMonitor taskStateMonitor = toolbox.CreateTaskStateMonitor();
bool timedOut = await taskStateMonitor.WaitAllAsync(tasksToMonitor, TaskState.Completed, TimeSpan.FromMinutes(5));
//Get the list of mapper tasks in order to analyze their state and ensure they completed successfully.
IEnumerableAsyncExtended <ICloudTask> asyncEnumerable = workItemManager.ListTasks(
this.workItemName,
this.jobName,
detailLevel: mapperTaskNameFilter);
IAsyncEnumerator <ICloudTask> asyncEnumerator = asyncEnumerable.GetAsyncEnumerator();
//Dump the status of each mapper task.
while (await asyncEnumerator.MoveNextAsync())
{
ICloudTask cloudTask = asyncEnumerator.Current;
Console.WriteLine("Task {0} is in state: {1}", cloudTask.Name, cloudTask.State);
await Helpers.CheckForTaskSuccessAsync(cloudTask, dumpStandardOutOnTaskSuccess : false);
Console.WriteLine();
}
//If not all the tasks reached the desired state within the timeout then the job manager
//cannot continue.
if (timedOut)
{
const string errorMessage = "Mapper tasks did not complete within expected timeout.";
Console.WriteLine(errorMessage);
throw new TimeoutException(errorMessage);
}
//
// Create the reducer task.
//
string reducerTaskCommandLine = string.Format("{0} -ReducerTask", Constants.TextSearchExe);
Console.WriteLine("Adding the reducer task: {0}", Constants.ReducerTaskName);
ICloudTask unboundReducerTask = new CloudTask(Constants.ReducerTaskName, reducerTaskCommandLine);
//The set of files (exe's, dll's and configuration files) required to run the reducer task.
List <IResourceFile> reducerTaskResourceFiles = Helpers.GetResourceFiles(containerSas, Constants.RequiredExecutableFiles);
unboundReducerTask.ResourceFiles = reducerTaskResourceFiles;
//Send the request to the Batch Service to add the reducer task.
await workItemManager.AddTaskAsync(this.workItemName, this.jobName, unboundReducerTask);
//
//Wait for the reducer task to complete.
//
//Get the bound reducer task and monitor it for completion.
ICloudTask boundReducerTask = await workItemManager.GetTaskAsync(this.workItemName, this.jobName, Constants.ReducerTaskName);
timedOut = await taskStateMonitor.WaitAllAsync(new List <ICloudTask> {
boundReducerTask
}, TaskState.Completed, TimeSpan.FromMinutes(2));
//Refresh the reducer task to get the most recent information about it from the Batch Service.
await boundReducerTask.RefreshAsync();
//Dump the reducer tasks exit code and scheduling error for debugging purposes.
await Helpers.CheckForTaskSuccessAsync(boundReducerTask, dumpStandardOutOnTaskSuccess : true);
//Handle the possibilty that the reducer task did not complete in the expected timeout.
if (timedOut)
{
const string errorMessage = "Reducer task did not complete within expected timeout.";
Console.WriteLine("Task {0} is in state: {1}", boundReducerTask.Name, boundReducerTask.State);
Console.WriteLine(errorMessage);
throw new TimeoutException(errorMessage);
}
//The job manager has completed.
Console.WriteLine("JobManager completed successfully.");
}
}
}
