private async Task <JobStatus> SendBulkListAsync(int userId,
int jobId,
CancellationToken token,
IProgress <JobStatus> progress,
JobDetailsSendBulkEmails jobDetails)
{
var sw = new System.Diagnostics.Stopwatch();
sw.Start();
int emailsSent = 0;
int emailsSkipped = 0;
int userCounter = 0;
int addSentCounter = 0;
var problemEmails = new List <string>();
var filter = new EmailReminderFilter
{
MailingList = jobDetails.MailingList,
Take = 30
};
var subscribers = await _emailReminderService.GetSubscribersWithCountAsync(filter);
var subscribedCount = subscribers.Count;
var subscribed = subscribers.Data;
_logger.LogInformation("Email job {JobId}: found {Count} subscribed users, processing first batch of {BatchCount}",
jobId,
subscribedCount,
subscribed.Count);
token.Register(() =>
{
_logger.LogWarning("Email job {JobId} for user {UserId} was cancelled after {EmailsSent} sent, {EmailsSkipped} skipped of {SubscribedUsersCount} in {TimeElapsed}.",
jobId,
userId,
emailsSent,
emailsSkipped,
subscribedCount,
sw.Elapsed.ToString(SpanFormat, CultureInfo.InvariantCulture));
});
if (subscribed.Count > 0)
{
var elapsedStatus = sw.Elapsed;
var elapsedUpdateDbStatus = sw.Elapsed;
var elapsedLogInfoStatus = sw.Elapsed;
var elapsedLogInfoPercent = 0;
var template
= await _emailService.GetEmailTemplate(jobDetails.EmailTemplateId);
progress.Report(new JobStatus
{
PercentComplete = 0,
Title = $"Sending email: {template.Description}",
Status = $"Preparing to email {subscribed.Count} participants...",
Error = false
});
var siteId = GetCurrentSiteId();
while (subscribed.Count > 0)
{
Thread.Sleep(1000);
foreach (var emailReminder in subscribed)
{
if (problemEmails.Contains(emailReminder.Email))
{
emailsSkipped++;
continue;
}
bool clearToSend = true;
if (!jobDetails.SendToParticipantsToo)
{
var isParticipant = await _userService
.IsEmailSubscribedAsync(emailReminder.Email);
if (isParticipant)
{
clearToSend = false;
}
}
if (emailReminder.SentAt != null || !clearToSend)
{
// send email
_logger.LogTrace("Email job {JobId}: skipping email {Count}/{Total} to {Email}: {Message}",
jobId,
userCounter + 1,
subscribedCount,
emailReminder.Email,
emailReminder.SentAt != null
? " already sent at " + emailReminder.SentAt
: " is a subscribed participant");
emailsSkipped++;
}
else
{
// send email
_logger.LogTrace("Email job {JobId}: sending email {Count}/{Total} to {Email} with template {EmailTemplate}",
jobId,
userCounter + 1,
subscribedCount,
emailReminder.Email,
jobDetails.EmailTemplateId);
// send email to user
try
{
await _emailService
.SendBulkAsync(emailReminder,
jobDetails.EmailTemplateId,
siteId);
await _emailReminderService.UpdateSentDateAsync(emailReminder.Id);
addSentCounter++;
emailsSent++;
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
_logger.LogError(ex,
"Email job {JobId}: Send failed to {UserId} at {Email}: {ErrorMessage}",
jobId,
emailReminder.Id,
emailReminder.Email,
ex.Message);
if (!problemEmails.Contains(emailReminder.Email))
{
problemEmails.Add(emailReminder.Email);
}
}
#pragma warning restore CA1031 // Do not catch general exception types
}
userCounter++;
if (token.IsCancellationRequested)
{
break;
}
if (sw.Elapsed.TotalSeconds - elapsedStatus.TotalSeconds > 5 ||
userCounter == 1)
{
elapsedStatus = sw.Elapsed;
var remaining = TimeSpan
.FromMilliseconds(elapsedStatus.TotalMilliseconds / userCounter
* (subscribedCount - userCounter))
.ToString(SpanFormat, CultureInfo.InvariantCulture);
var status = new JobStatus
{
PercentComplete = userCounter * 100 / subscribedCount,
Status = $"Sent {emailsSent}, skipped {emailsSkipped} of {subscribedCount}; {elapsedStatus.ToString(SpanFormat, CultureInfo.InvariantCulture)}, remaining: {remaining}, problems: {problemEmails.Count}",
Error = false
};
progress.Report(status);
if (sw.Elapsed.TotalSeconds - elapsedUpdateDbStatus.TotalSeconds > 60 ||
userCounter == 1)
{
elapsedUpdateDbStatus = sw.Elapsed;
if (addSentCounter > 0)
{
await _emailService.UpdateSentCount(template.Id, addSentCounter);
addSentCounter = 0;
}
var dbStatusText = string.Format(CultureInfo.InvariantCulture,
"{0}%: {1}",
status.PercentComplete,
status.Status);
await _jobRepository.UpdateStatusAsync(jobId,
dbStatusText.Substring(0, Math.Min(dbStatusText.Length, 255)));
}
if (sw.Elapsed.TotalSeconds - elapsedLogInfoStatus.TotalSeconds > 500 ||
userCounter == 1 ||
status.PercentComplete - elapsedLogInfoPercent >= 20)
{
elapsedLogInfoStatus = sw.Elapsed;
elapsedLogInfoPercent = status.PercentComplete ?? 0;
_logger.LogInformation("Email job {JobId}: {EmailsSent} sent, {EmailsSkipped} skipped of {SubscribedCount} total in {ElapsedTime}, remaining: {EmailsRemaining}, problems: {EmailProblems}",
jobId,
emailsSent,
emailsSkipped,
subscribedCount,
elapsedStatus.ToString(SpanFormat, CultureInfo.InvariantCulture),
remaining,
problemEmails.Count);
}
}
}
if (token.IsCancellationRequested)
{
break;
}
filter.Skip = userCounter;
subscribed = await _emailReminderService.GetSubscribersAsync(filter);
}
template.EmailsSent = emailsSent;
await _emailTemplateRepository.UpdateSaveNoAuditAsync(template);
string taskStatus = token.IsCancellationRequested
? "Cancelled after"
: "Task completed with";
var finalStatus = new JobStatus
{
PercentComplete = userCounter * 100 / subscribedCount,
Status = $"{taskStatus} {emailsSent} sent, {emailsSkipped} skipped of {subscribedCount} in {elapsedStatus.ToString(SpanFormat, CultureInfo.InvariantCulture)}."
};
var statusText = string.Format(CultureInfo.InvariantCulture,
"{0}%: {1}",
finalStatus.PercentComplete,
finalStatus.Status);
await _jobRepository.UpdateStatusAsync(jobId,
statusText.Substring(0, Math.Min(statusText.Length, 255)));
_logger.LogInformation("Email job {JobId}: " + taskStatus + " {EmailsSent} sent, {EmailsSkipped} skipped of {SubscribedCount} total in {ElapsedTime}",
jobId,
emailsSent,
emailsSkipped,
subscribedCount,
elapsedStatus.ToString(SpanFormat, CultureInfo.InvariantCulture));
return(finalStatus);
}
else
{
_logger.LogWarning("User {UserId} attempted to send bulk emails in job {JobId} with no subscribed participants.",
userId,
jobId);
await _jobRepository.UpdateStatusAsync(jobId,
"No participants were subscribed.");
return(new JobStatus
{
PercentComplete = 0,
Status = "No participants are subscribed.",
Error = true
});
}
}
