/// <summary>
/// Method executes the email sending task.
/// </summary>
/// <param name="context">Specifies task processor.</param>
private void DoExecute(TaskProcessor context)
{
Debug.Assert(context != null, "context object is null");
//// TODO: Do we need to serialize the mail object before sending mail?
if (!Constants.EnableEmailing)
{
Logger.Logger.Info("Sending mails to recipients is disabled.");
return;
}
int retryCount = 0;
bool retry = false, mailSent = false;
EmailRequest emailRequest = new EmailRequest();
Logger.Logger.Info("Sending mails to recipients.");
do
{
try
{
emailRequest.UpdateFrom(this.request);
retry = false;
}
catch (Exception ex)
{
Logger.Logger.Error(ex, "Unexpected failure occurred while retrieving mail details from database, RetryCount = {0} ", retryCount);
// Set the resend flag if the number of retries have exceeded the maximum retry count.
retry = retryCount++ <= Constants.RetryCount;
// Before retrying, wait for 5 seconds.
System.Threading.Thread.Sleep(5000);
if (!retry)
{
// If there are not more retries, then set emailRequest as Null, so that the item will be added back to the queue
// so that retry to send mail will happen later.
emailRequest = null;
}
}
}
while (retry);
if (emailRequest != null)
{
try
{
Mail mail = null;
if (emailRequest.IsHtml)
{
mail = new HtmlMail(true);
}
else
{
mail = new Mail();
}
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderEmail), "sender email id is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderDisplayName), "sender display name is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.ReplyToEmail), "reply to email id is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.ReplyToDisplayName), "reply to display name is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderEmail), "sender name is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderDisplayName), "sender display name is empty");
Debug.Assert(emailRequest != null, "request object is null");
Debug.Assert(emailRequest.Recipients != null, "recipients object is null");
Debug.Assert(emailRequest.Recipients.Count != 0, "no recipients found");
Debug.Assert(!string.IsNullOrEmpty(emailRequest.Subject), "mail subject is empty");
Debug.Assert(!string.IsNullOrEmpty(emailRequest.MessageBody), "mail body is empty");
mail.From = new MailAddress(Constants.SenderEmail, Constants.SenderDisplayName);
mail.ReplyTo.Add(new MailAddress(Constants.ReplyToEmail, Constants.ReplyToDisplayName));
mail.To.AddRange(emailRequest.Recipients);
// Need to Add BCC for all the mails.
mail.Bcc.Add(new MailAddress(Constants.BccEmail, Constants.BccEmail));
mail.Subject = emailRequest.Subject;
mail.MessageBody = emailRequest.MessageBody;
mailSent = mail.Send();
Logger.Logger.Info("Sending mails to recipients succeeded.");
}
catch (Exception ex)
{
// Swallowing exception in release build not to fail the task in case of mailing failure.
Logger.Logger.Error(ex, "Unexpected failure occurred while sending mail to recipients.");
#if DEBUG
throw ex;
#endif
}
}
if (!mailSent)
{
// If mail is not sent, add the notification request back to the queue.
this.request.AddToNotificationQueue();
}
}
/// <summary>
/// Method used to send mail.
/// </summary>
/// <param name="request">Request details.</param>
private static bool SendMail(object request)
{
int retryCount = 0;
bool retry = false, mailSent = false;
List<EmailRequest> emailRequest = new List<EmailRequest>();
Logger.Logger.Info("Sending mails to recipients.");
do
{
try
{
emailRequest.UpdateFrom(request);
retry = false;
}
catch (Exception ex)
{
Logger.Logger.Error(ex, "Unexpected failure occurred while retrieving mail details from database, RetryCount = {0} ", retryCount);
// Before retrying, wait for 5 seconds.
System.Threading.Thread.Sleep(5000);
// Set the resend flag if the number of retries have exceeded the maximum retry count.
retry = retryCount++ <= Constants.RetryCount;
}
}
while (retry);
foreach (var item in emailRequest)
{
try
{
Mail mail = null;
if (item.IsHtml)
{
mail = new HtmlMail(true);
}
else
{
mail = new Mail();
}
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderEmail), "sender email id is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderDisplayName), "sender display name is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.ReplyToEmail), "reply to email id is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.ReplyToDisplayName), "reply to display name is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderEmail), "sender name is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderDisplayName), "sender display name is empty");
Debug.Assert(item != null, "request object is null");
Debug.Assert(item.Recipients != null, "recipients object is null");
Debug.Assert(item.Recipients.Count != 0, "no recipients found");
Debug.Assert(!string.IsNullOrEmpty(item.Subject), "mail subject is empty");
Debug.Assert(!string.IsNullOrEmpty(item.MessageBody), "mail body is empty");
mail.From = new MailAddress(Constants.SenderEmail, Constants.SenderDisplayName);
mail.ReplyTo.Add(new MailAddress(Constants.ReplyToEmail, Constants.ReplyToDisplayName));
mail.To.AddRange(item.Recipients);
// Need to Add BCC for all the mails.
mail.Bcc.Add(new MailAddress(Constants.BccEmail, Constants.BccEmail));
mail.Subject = item.Subject;
mail.MessageBody = item.MessageBody;
mailSent = mail.Send();
// If one of the mail is not sent, break the loop and add the object back to the queue,
// so that retrying the mail will happen again after some time
if (!mailSent)
{
break;
}
}
catch (Exception ex)
{
// Swallowing exception in release build not to fail the task in case of mailing failure.
Logger.Logger.Error(ex, "Unexpected failure occurred while sending mail to recipients.");
#if DEBUG
throw ex;
#endif
}
}
return mailSent;
}
/// <summary>
/// Method used to send mail.
/// </summary>
/// <param name="request">Request details.</param>
private static bool SendMail(object request)
{
int retryCount = 0;
bool retry = false, mailSent = false;
List <EmailRequest> emailRequest = new List <EmailRequest>();
Logger.Logger.Info("Sending mails to recipients.");
do
{
try
{
emailRequest.UpdateFrom(request);
retry = false;
}
catch (Exception ex)
{
Logger.Logger.Error(ex, "Unexpected failure occurred while retrieving mail details from database, RetryCount = {0} ", retryCount);
// Before retrying, wait for 5 seconds.
System.Threading.Thread.Sleep(5000);
// Set the resend flag if the number of retries have exceeded the maximum retry count.
retry = retryCount++ <= Constants.RetryCount;
}
}while (retry);
foreach (var item in emailRequest)
{
try
{
Mail mail = null;
if (item.IsHtml)
{
mail = new HtmlMail(true);
}
else
{
mail = new Mail();
}
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderEmail), "sender email id is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderDisplayName), "sender display name is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.ReplyToEmail), "reply to email id is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.ReplyToDisplayName), "reply to display name is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderEmail), "sender name is empty");
Debug.Assert(!string.IsNullOrEmpty(Constants.SenderDisplayName), "sender display name is empty");
Debug.Assert(item != null, "request object is null");
Debug.Assert(item.Recipients != null, "recipients object is null");
Debug.Assert(item.Recipients.Count != 0, "no recipients found");
Debug.Assert(!string.IsNullOrEmpty(item.Subject), "mail subject is empty");
Debug.Assert(!string.IsNullOrEmpty(item.MessageBody), "mail body is empty");
mail.From = new MailAddress(Constants.SenderEmail, Constants.SenderDisplayName);
mail.ReplyTo.Add(new MailAddress(Constants.ReplyToEmail, Constants.ReplyToDisplayName));
mail.To.AddRange(item.Recipients);
// Need to Add BCC for all the mails.
mail.Bcc.Add(new MailAddress(Constants.BccEmail, Constants.BccEmail));
mail.Subject = item.Subject;
mail.MessageBody = item.MessageBody;
mailSent = mail.Send();
// If one of the mail is not sent, break the loop and add the object back to the queue,
// so that retrying the mail will happen again after some time
if (!mailSent)
{
break;
}
}
catch (Exception ex)
{
// Swallowing exception in release build not to fail the task in case of mailing failure.
Logger.Logger.Error(ex, "Unexpected failure occurred while sending mail to recipients.");
#if DEBUG
throw ex;
#endif
}
}
return(mailSent);
}