public static async Task <string> WriteRecordsToBlob(
[ActivityTrigger] ActivityCreateBlobInfo info,
Binder binder,
ILogger log)
{
string outputLocation = $"{info.BlobContainer}/{info.BlobName}";
List <FakeDTO> list = PopulateFakeData(info);
log.LogInformation($"[INFO] Started from '{info.NumberToStart} to get {info.NumberOfRecords} records'");
log.LogInformation($"[INFO] Writing to '{outputLocation}'");
// write contents into a blob
JsonSerializer serializer = new JsonSerializer();
try
{
using (TextWriter outputWriter = await binder.BindAsync <TextWriter>(
new BlobAttribute(outputLocation, FileAccess.Write)))
{
serializer.Serialize(outputWriter, list);
}
}
catch (Exception ex)
{
log.LogInformation($"Error : '{ex.Message}'");
}
return(outputLocation);
}
private static List <FakeDTO> PopulateFakeData(ActivityCreateBlobInfo info)
{
var list = new List <FakeDTO>();
for (int i = info.NumberToStart; i < info.NumberToStart + info.NumberOfRecords; i++)
{
list.Add(new FakeDTO()
{
SeqID = Guid.NewGuid().ToString(),
Name = "Name" + i.ToString(),
TopValue = "Top" + i.ToString(),
BottomValue = "Bottom" + i.ToString()
});
}
return(list);
}
public static async Task <string> Run(
[OrchestrationTrigger] DurableOrchestrationContext context)
{
string result = string.Empty;
string requestID = context.GetInput <string>()?.Trim();
if (string.IsNullOrEmpty(requestID))
{
requestID = Guid.NewGuid().ToString();
}
var actvityInfo = new ActivityCreateBlobInfo()
{
BlobContainer = requestID,
NumberOfRecords = 100,
};
int loopCount = 10;
var tasks = new List <Task <string> >();
for (int i = 0; i < loopCount; i++)
{
actvityInfo.BlobName = $"{i+1}.json";
actvityInfo.NumberToStart = i * actvityInfo.NumberOfRecords + 1;
tasks.Add(
context.CallActivityAsync <string>(
"WriteRecordsToBlob",
actvityInfo)
);
}
//case using WhenAll
string[] results = await Task.WhenAll(tasks);
//.ConfigureAwait(false); 사용하면 안됨.
// 기본값 true로 해서 SynchronizationContext로 동기화하지 않는다면, 끝났다는 정보를 API가 제공하지 못함.
// 즉, 실행이 끝났는대도 API는 running을 알려주게 됨.
result = JsonConvert.SerializeObject(results);
return(result);
}