/// <summary>
/// Translates an Azure-specific CloudDetails object into a
/// generic JobDetails object which can be passed back to the
/// presenter.
/// </summary>
/// <param name="cloudJob">The Azure ClouJob object.</param>
/// <param name="ct">Cancellation token.</param>
private async Task <JobDetails> GetJobDetails(CloudJob cloudJob, CancellationToken ct)
{
try
{
if (!await storageClient.GetContainerReference($"job-{cloudJob.Id}").ExistsAsync(ct))
{
await DeleteJobAsync(cloudJob.Id, ct);
return(null);
}
string owner = await GetContainerMetaDataAsync($"job-{cloudJob.Id}", "Owner", ct);
TaskCounts tasks = await batchClient.JobOperations.GetJobTaskCountsAsync(cloudJob.Id, cancellationToken : ct);
int numTasks = tasks.Active + tasks.Running + tasks.Completed;
// If there are no tasks, set progress to 100%.
double jobProgress = numTasks == 0 ? 100 : 100.0 * tasks.Completed / numTasks;
// If cpu time is unavailable, set this field to 0.
TimeSpan cpu = cloudJob.Statistics == null ? TimeSpan.Zero : cloudJob.Statistics.KernelCpuTime + cloudJob.Statistics.UserCpuTime;
JobDetails job = new JobDetails
{
Id = cloudJob.Id,
DisplayName = cloudJob.DisplayName,
State = cloudJob.State.ToString(),
Owner = owner,
NumSims = numTasks - 1, // subtract one because one of these is the job manager
Progress = jobProgress,
CpuTime = cpu
};
if (cloudJob.ExecutionInformation != null)
{
job.StartTime = cloudJob.ExecutionInformation.StartTime;
job.EndTime = cloudJob.ExecutionInformation.EndTime;
}
return(job);
}
catch (Exception)
{
return(null);
}
}
/// <summary>
/// Gets the list of jobs submitted to Azure.
/// </summary>
/// <returns>List of Jobs. Null if the thread is asked to cancel, or if unable to update the progress bar.</returns>
private List <JobDetails> ListJobs()
{
try
{
view.ShowLoadingProgressBar();
view.JobLoadProgress = 0;
} catch (NullReferenceException)
{
return(null);
} catch (Exception e)
{
ShowError(e.ToString());
}
List <JobDetails> jobs = new List <JobDetails>();
var pools = batchClient.PoolOperations.ListPools();
var jobDetailLevel = new ODATADetailLevel {
SelectClause = "id,displayName,state,executionInfo,stats", ExpandClause = "stats"
};
IPagedEnumerable <CloudJob> cloudJobs = null;
// Attempt to download raw job list. If this fails more than 3 times, return.
int numTries = 0;
while (numTries < 4 && cloudJobs == null)
{
try
{
cloudJobs = batchClient.JobOperations.ListJobs(jobDetailLevel);
}
catch (Exception e)
{
if (numTries >= 3)
{
ShowError("Unable to retrieve job list: " + e.ToString());
return(new List <JobDetails>());
}
} finally
{
numTries++;
}
}
// Parse jobs into a list of JobDetails objects.
var length = cloudJobs.Count();
int i = 0;
foreach (var cloudJob in cloudJobs)
{
if (FetchJobs.CancellationPending)
{
return(null);
}
try
{
view.JobLoadProgress = 100.0 * i / length;
} catch (NullReferenceException)
{
return(null);
} catch (Exception e)
{
ShowError(e.ToString());
}
string owner = GetAzureMetaData("job-" + cloudJob.Id, "Owner");
long numTasks = 1;
double jobProgress = 0;
try
{
TaskCounts tasks = batchClient.JobOperations.GetJobTaskCounts(cloudJob.Id);
numTasks = tasks.Active + tasks.Running + tasks.Completed;
// if there are no tasks, set progress to 100%
jobProgress = numTasks == 0 ? 100 : 100.0 * tasks.Completed / numTasks;
} catch (Exception e)
{
// sometimes an exception is thrown when retrieving the task counts
// could be due to the job not being submitted correctly
ShowError(e.ToString());
numTasks = -1;
jobProgress = 100;
}
// if cpu time is unavailable, set this field to 0
TimeSpan cpu = cloudJob.Statistics == null ? TimeSpan.Zero : cloudJob.Statistics.KernelCpuTime + cloudJob.Statistics.UserCpuTime;
var job = new JobDetails
{
Id = cloudJob.Id,
DisplayName = cloudJob.DisplayName,
State = cloudJob.State.ToString(),
Owner = owner,
NumSims = numTasks - 1, // subtract one because one of these is the job manager
Progress = jobProgress,
CpuTime = cpu
};
if (cloudJob.ExecutionInformation != null)
{
job.StartTime = cloudJob.ExecutionInformation.StartTime;
job.EndTime = cloudJob.ExecutionInformation.EndTime;
}
jobs.Add(job);
i++;
}
view.HideLoadingProgressBar();
if (jobs == null)
{
return(new List <JobDetails>());
}
return(jobs);
}
