/// <summary>
/// Lists the Tasks matching the specified filter options
/// </summary>
/// <param name="options">The options to use when querying for Tasks</param>
/// <returns>The Tasks matching the specified filter options</returns>
public IEnumerable <PSCloudTask> ListTasks(ListTaskOptions options)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
if ((string.IsNullOrEmpty(options.WorkItemName) || string.IsNullOrEmpty(options.JobName)) && options.Job == null)
{
throw new ArgumentNullException(Resources.GBT_NoJob);
}
// Get the single Task matching the specified name
if (!string.IsNullOrEmpty(options.TaskName))
{
WriteVerbose(string.Format(Resources.GBT_GetByName, options.TaskName, options.JobName, options.WorkItemName));
using (IWorkItemManager wiManager = options.Context.BatchOMClient.OpenWorkItemManager())
{
ICloudTask task = wiManager.GetTask(options.WorkItemName, options.JobName, options.TaskName, additionalBehaviors: options.AdditionalBehaviors);
PSCloudTask psTask = new PSCloudTask(task);
return(new PSCloudTask[] { psTask });
}
}
// List Tasks using the specified filter
else
{
if (options.MaxCount <= 0)
{
options.MaxCount = Int32.MaxValue;
}
string jName = options.Job == null ? options.JobName : options.Job.Name;
ODATADetailLevel odata = null;
if (!string.IsNullOrEmpty(options.Filter))
{
WriteVerbose(string.Format(Resources.GBT_GetByOData, jName, options.MaxCount));
odata = new ODATADetailLevel(filterClause: options.Filter);
}
else
{
WriteVerbose(string.Format(Resources.GBT_GetNoFilter, jName, options.MaxCount));
}
IEnumerableAsyncExtended <ICloudTask> tasks = null;
if (options.Job != null)
{
tasks = options.Job.omObject.ListTasks(odata, options.AdditionalBehaviors);
}
else
{
using (IWorkItemManager wiManager = options.Context.BatchOMClient.OpenWorkItemManager())
{
tasks = wiManager.ListTasks(options.WorkItemName, options.JobName, odata, options.AdditionalBehaviors);
}
}
Func <ICloudTask, PSCloudTask> mappingFunction = t => { return(new PSCloudTask(t)); };
return(new PSAsyncEnumerable <PSCloudTask, ICloudTask>(tasks, mappingFunction).Take(options.MaxCount));
}
}
/// <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.");
}
}
}
/// <summary>
/// Submit a work item with tasks which have dependant files.
/// The files are automatically uploaded to Azure Storage using the FileStaging feature of the Azure.Batch client library.
/// </summary>
/// <param name="client"></param>
private static void AddWorkWithFileStaging(IBatchClient client)
{
using (IWorkItemManager wm = client.OpenWorkItemManager())
{
IToolbox toolbox = client.OpenToolbox();
ITaskSubmissionHelper taskSubmissionHelper = toolbox.CreateTaskSubmissionHelper(wm, Program.PoolName);
taskSubmissionHelper.WorkItemName = Environment.GetEnvironmentVariable("USERNAME") + DateTime.Now.ToString("yyyyMMdd-HHmmss");
Console.WriteLine("Creating work item: {0}", taskSubmissionHelper.WorkItemName);
ICloudTask taskToAdd1 = new CloudTask("task_with_file1", "cmd /c type *.txt");
ICloudTask taskToAdd2 = new CloudTask("task_with_file2", "cmd /c dir /s");
//Set up a collection of files to be staged -- these files will be uploaded to Azure Storage
//when the tasks are submitted to the Azure Batch service.
taskToAdd1.FilesToStage = new List <IFileStagingProvider>();
taskToAdd2.FilesToStage = new List <IFileStagingProvider>();
// generate a local file in temp directory
Process cur = Process.GetCurrentProcess();
string path = Path.Combine(Environment.GetEnvironmentVariable("TEMP"), cur.Id.ToString() + ".txt");
System.IO.File.WriteAllText(path, "hello from " + cur.Id.ToString());
// add file as task dependency so it'll be uploaded to storage before task
// is submitted and download onto the VM before task starts execution
FileToStage file = new FileToStage(path, new StagingStorageAccount(Program.StorageAccount, Program.StorageKey, Program.StorageBlobEndpoint));
taskToAdd1.FilesToStage.Add(file);
taskToAdd2.FilesToStage.Add(file); // filetostage object can be reused
taskSubmissionHelper.AddTask(taskToAdd1);
taskSubmissionHelper.AddTask(taskToAdd2);
IJobCommitUnboundArtifacts artifacts = null;
bool errors = false;
try
{
//Stage the files to Azure Storage and add the tasks to Azure Batch.
artifacts = taskSubmissionHelper.Commit() as IJobCommitUnboundArtifacts;
}
catch (AggregateException ae)
{
errors = true;
// Go through all exceptions and dump useful information
ae.Handle((x) =>
{
if (x is BatchException)
{
BatchException be = x as BatchException;
if (null != be.RequestInformation && null != be.RequestInformation.AzureError)
{
// Write the server side error information
Console.Error.WriteLine(be.RequestInformation.AzureError.Code);
Console.Error.WriteLine(be.RequestInformation.AzureError.Message.Value);
if (null != be.RequestInformation.AzureError.Values)
{
foreach (var v in be.RequestInformation.AzureError.Values)
{
Console.Error.WriteLine(v.Key + " : " + v.Value);
}
}
}
}
else
{
Console.WriteLine(x);
}
// Indicate that the error has been handled
return(true);
});
}
// if there is no exception, wait for job response
if (!errors)
{
List <ICloudTask> tasksToMonitorForCompletion = wm.ListTasks(artifacts.WorkItemName, artifacts.JobName).ToList();
Console.WriteLine("Waiting for all tasks to complete on work item: {0}, Job: {1} ...", artifacts.WorkItemName, artifacts.JobName);
client.OpenToolbox().CreateTaskStateMonitor().WaitAll(tasksToMonitorForCompletion, TaskState.Completed, TimeSpan.FromMinutes(30));
foreach (ICloudTask task in wm.ListTasks(artifacts.WorkItemName, artifacts.JobName))
{
Console.WriteLine("Task " + task.Name + " says:\n" + task.GetTaskFile(Constants.StandardOutFileName).ReadAsString());
Console.WriteLine(task.GetTaskFile(Constants.StandardErrorFileName).ReadAsString());
}
}
Console.WriteLine("Deleting work item: {0}", artifacts.WorkItemName);
wm.DeleteWorkItem(artifacts.WorkItemName); //Don't forget to delete the work item before you exit
}
}
