public static void Run([ActivityTrigger] ApprovalResponseMetadata responseMetadata, TraceWriter log)
{
log.Info($"Moving Blob {responseMetadata.ReferenceUrl} to {responseMetadata.DestinationContainer}");
try
{
CloudStorageAccount account = CloudStorageAccount.Parse(System.Environment.GetEnvironmentVariable("Blob:StorageConnection", EnvironmentVariableTarget.Process));
var client = account.CreateCloudBlobClient();
var sourceBlob = client.GetBlobReferenceFromServerAsync(new Uri(responseMetadata.ReferenceUrl)).Result;
var destinationContainer = client.GetContainerReference(responseMetadata.DestinationContainer);
var destinationBlob = destinationContainer.GetBlobReference(sourceBlob.Name);
destinationBlob.StartCopyAsync(sourceBlob.Uri);
Task.Delay(TimeSpan.FromSeconds(15)).Wait();
sourceBlob.DeleteAsync();
log.Info($"Blob '{responseMetadata.ReferenceUrl}' moved to container '{responseMetadata.DestinationContainer}'");
}
catch (Exception ex)
{
log.Error(ex.ToString());
throw;
}
}
public static async Task <bool> Run(
[OrchestrationTrigger] DurableOrchestrationContext context,
ILogger log)
{
if (!context.IsReplaying)
{
log.LogInformation($"Starting the orchestration {context.InstanceId}");
}
context.SetCustomStatus("The application has been received.");
var isApproved = false;
string meansOfApproval = Environment.GetEnvironmentVariable("Workflow:MeansOfApproval");
ApprovalRequestMetadata approvalRequestMetadata = context.GetInput <ApprovalRequestMetadata>();
approvalRequestMetadata.InstanceId = context.InstanceId;
await context.CallActivityAsync("PersistWorkflowCorrelation",
new WorkflowCorrelation {
EntityId = $"{approvalRequestMetadata.ApplicantId}",
WorkflowInstanceId = context.InstanceId
});
context.SetCustomStatus("We are reviewing your application. Bear with us.");
// Check whether the approval request is to be sent via Email or Slack based on App Settings
if (meansOfApproval.Equals("email", StringComparison.OrdinalIgnoreCase))
{
if (!context.IsReplaying)
{
log.LogInformation("Sending Approval Request Via Email");
}
await context.CallActivityAsync("SendApprovalRequestViaEmail", approvalRequestMetadata);
}
else
{
if (!context.IsReplaying)
{
log.LogInformation("Sending Approval Request Via Slack");
}
await context.CallActivityAsync("SendApprovalRequestViaSlack", approvalRequestMetadata);
}
// Wait for Response as an external event or a time out.
// The approver has a limit to approve otherwise the request will be rejected.
using (var timeoutCts = new CancellationTokenSource())
{
int timeout;
if (!int.TryParse(Environment.GetEnvironmentVariable("Workflow:Timeout"), out timeout))
{
timeout = 5;
}
DateTime expiration = context.CurrentUtcDateTime.AddMinutes(timeout);
Task timeoutTask = context.CreateTimer(expiration, timeoutCts.Token);
// This event can come from a click on the Email sent via SendGrid or a selection on the message sent via Slack.
Task <bool> approvalResponse = context.WaitForExternalEvent <bool>("ReceiveApprovalResponse");
Task winner = await Task.WhenAny(approvalResponse, timeoutTask);
ApprovalResponseMetadata approvalResponseMetadata = new ApprovalResponseMetadata()
{
ReferenceUrl = approvalRequestMetadata.ReferenceUrl
};
if (winner == approvalResponse)
{
if (!context.IsReplaying)
{
log.LogInformation("An approval response was received");
}
if (approvalResponse.Result)
{
approvalResponseMetadata.Status = "approved";
context.SetCustomStatus("Approved. Congrats, You are super special!");
}
else
{
approvalResponseMetadata.Status = "rejected";
context.SetCustomStatus("Rejected. Sorry! Only the best can join us!");
}
}
else
{
if (!context.IsReplaying)
{
log.LogInformation("The waiting time has exceeded!");
}
approvalResponseMetadata.Status = "rejected";
context.SetCustomStatus("Rejected. Sorry! We are extremely busy. Try again in your next life!");
}
if (!timeoutTask.IsCompleted)
{
// All pending timers must be completed or cancelled before the function exits.
timeoutCts.Cancel();
}
// Once the approval process has been finished, the Blob is to be moved to the corresponding container.
if (!context.IsReplaying)
{
log.LogInformation("Moving the blob to the corresponding container");
}
await context.CallActivityAsync <string>("MoveBlob", approvalResponseMetadata);
if (!context.IsReplaying)
{
log.LogInformation("Orchestration has finished");
}
return(isApproved);
}
}
public static async Task <bool> Run([OrchestrationTrigger] DurableOrchestrationContext context)
{
var isApproved = false;
string meansOfApproval = Environment.GetEnvironmentVariable("Workflow:MeansOfApproval");
ApprovalRequestMetadata approvalRequestMetadata = context.GetInput <ApprovalRequestMetadata>();
approvalRequestMetadata.InstanceId = context.InstanceId;
// Check whether the approval request is to be sent via Email or Slack based on App Settings
if (meansOfApproval.Equals("email", StringComparison.OrdinalIgnoreCase))
{
await context.CallActivityAsync("SendApprovalRequestViaEmail", approvalRequestMetadata);
}
else
{
await context.CallActivityAsync("SendApprovalRequestViaSlack", approvalRequestMetadata);
}
// Wait for Response as an external event or a time out.
// The approver has a limit to approve otherwise the request will be rejected.
using (var timeoutCts = new CancellationTokenSource())
{
int timeout;
if (!int.TryParse(Environment.GetEnvironmentVariable("Workflow:Timeout"), out timeout))
{
timeout = 5;
}
DateTime expiration = context.CurrentUtcDateTime.AddMinutes(timeout);
Task timeoutTask = context.CreateTimer(expiration, timeoutCts.Token);
// This event can come from a click on the Email sent via SendGrid or a selection on the message sent via Slack.
Task <bool> approvalResponse = context.WaitForExternalEvent <bool>("ReceiveApprovalResponse");
Task winner = await Task.WhenAny(approvalResponse, timeoutTask);
ApprovalResponseMetadata approvalResponseMetadata = new ApprovalResponseMetadata()
{
ReferenceUrl = approvalRequestMetadata.ReferenceUrl
};
if (winner == approvalResponse)
{
if (approvalResponse.Result)
{
approvalResponseMetadata.DestinationContainer = "approved";
}
else
{
approvalResponseMetadata.DestinationContainer = "rejected";
}
}
else
{
approvalResponseMetadata.DestinationContainer = "rejected";
}
if (!timeoutTask.IsCompleted)
{
// All pending timers must be completed or cancelled before the function exits.
timeoutCts.Cancel();
}
// Once the approval process has been finished, the Blob is to be moved to the corresponding container.
await context.CallActivityAsync <string>("MoveBlob", approvalResponseMetadata);
return(isApproved);
}
}
