public static async Task <bool> MakeQueueAsync(ILogger logger)
{
Settings settings = Settings.Load();
CloudStorageAccount account = CloudStorageAccount.Parse(settings.AzureWebJobsStorage);
CloudTableClient tableClient = account.CreateCloudTableClient();
CloudQueueClient queueClient = account.CreateCloudQueueClient();
CloudQueue jobQueue = queueClient.GetQueueReference(settings.JobQueueName);
_ = await jobQueue.CreateIfNotExistsAsync();
CloudTable jobTable = tableClient.GetTableReference(settings.JobTableName);
CloudTable jobHistoryTable = tableClient.GetTableReference(settings.JobHistoryTableName);
_ = await jobHistoryTable.CreateIfNotExistsAsync();
JobEntity plan = null;
{
TableQuery <JobEntity> query = new TableQuery <JobEntity>().Take(8);
TableQuerySegment <JobEntity> segments = await jobTable.ExecuteQuerySegmentedAsync(query, null);
var jobEntities = segments.Results;
var ordered = jobEntities.OrderByDescending(i => i.CreateAt);
if (ordered.Count() == 0)
{
return(true);
}
plan = ordered.First();
}
int step = int.Parse(settings.Step);
if (step <= 0)
{
step = DEFAULT_STEP;
}
{
string targetPath = settings.TargetPath;
Uri uri = new Uri(targetPath);
CloudBlobContainer blobContainer = new CloudBlobContainer(uri, account.Credentials);
int section = plan.Current / step;
string path = $"{plan.Version}/{plan.PartitionKey}/{section * step}";
long fileCount = await StorageHelper.GetBlobFileCountAsync(blobContainer, path, int.Parse(settings.MaxResult));
if (fileCount <= int.Parse(settings.StepThreshold) && fileCount > 0)
{
logger.LogInformation($"file count {fileCount} less than step threshold");
return(true);
}
}
if (plan.Current >= plan.Amount)
{
TableOperation delete = TableOperation.Delete(plan);
_ = await jobTable.ExecuteAsync(delete);
plan.UpdateAt = DateTime.Now;
TableOperation insertOrMerge = TableOperation.InsertOrMerge(plan);
_ = await jobHistoryTable.ExecuteAsync(insertOrMerge);
return(true);
}
else
{
int start = plan.Current;
int current = plan.Current + step;
int count = step;
if (current > plan.Amount)
{
count = plan.Amount - plan.Current;
plan.Current = plan.Amount;
}
else
{
plan.Current += step;
}
plan.UpdateAt = DateTime.Now;
TableOperation insertOrMerge = TableOperation.InsertOrMerge(plan);
_ = await jobTable.ExecuteAsync(insertOrMerge);
MakeQueueMessageAsync(jobQueue, plan, start, count, settings.SourcePath, settings.TargetPath);
}
return(true);
}