public static async Task <int> ManualDeviceImportOrchestration_Runner([OrchestrationTrigger] DurableOrchestrationContext context)
{
var blobContainerName = context.GetInput <string>();
var start = 0;
const int DEVICE_UPDATE_BATCH_SIZE = 100;
var changedDeviceCount = 0;
while (true)
{
var request = new UpdateDevicesActivityRequest
{
DeviceCount = DEVICE_UPDATE_BATCH_SIZE,
Start = start,
BlobContainerName = blobContainerName
};
var result = await context.CallActivityAsync <UpdateDevicesActivityResult>(nameof(UpdateDevicesActivity), request);
changedDeviceCount += result.ChangedDeviceCount;
if (result.ProcessedDeviceCount < request.DeviceCount)
{
break;
}
start = result.Start + result.ProcessedDeviceCount;
}
return(changedDeviceCount);
}
public static async Task <UpdateDevicesActivityResult> UpdateDevicesActivity([ActivityTrigger] UpdateDevicesActivityRequest request, TraceWriter log)
{
var result = new UpdateDevicesActivityResult
{
ProcessedDeviceCount = 0,
ChangedDeviceCount = 0,
Start = request.Start
};
CloudStorageAccount storage = CloudStorageAccount.Parse(Settings.Instance.StorageAccountConnectionString);
CloudBlobClient client = storage.CreateCloudBlobClient();
CloudBlobContainer container = client.GetContainerReference(request.BlobContainerName);
var blob = container.GetBlobReference(Utils.DeviceToImportBlobName);
using (var streamReader = new StreamReader(await blob.OpenReadAsync()))
{
// skip "start" lines
for (var line = 0; line < request.Start; ++line)
{
await streamReader.ReadLineAsync();
}
// process items
var registryManager = RegistryManager.CreateFromConnectionString(Settings.Instance.IoTHubConnectionString);
for (var count = 0; count < request.DeviceCount; ++count)
{
try
{
var line = await streamReader.ReadLineAsync();
if (!string.IsNullOrEmpty(line))
{
var device = JsonConvert.DeserializeObject <ExportImportDevice>(line);
if (await HandleDevice(device, registryManager, log))
{
result.ChangedDeviceCount++;
}
result.ProcessedDeviceCount++;
}
}
catch (Exception ex)
{
log.Error("error", ex);
throw;
}
}
}
return(result);
}