/// <summary>
/// Routine that attempts to resend emails that previously failed.
/// </summary>
/// <returns>List of emails that were successfully resent.</returns>
/// <remarks>Uses internally maintained queue of emails that failed to send.</remarks>
public PFListEx <stEmailArchiveEntry> ResendEmails()
{
PFListEx <stEmailArchiveEntry> successfulResends = new PFListEx <stEmailArchiveEntry>();
PFListEx <stEmailArchiveEntry> failedResends = new PFListEx <stEmailArchiveEntry>();
_emailResendQueue = PFListEx <stEmailArchiveEntry> .LoadFromXmlFile(_emailResendQueueFile);
_emailLastResendList.Clear();
foreach (stEmailArchiveEntry emailEntry in _emailResendQueue)
{
stEmailSendResult res = this.SendEmail(emailEntry.emailMessage, false);
if (res.emailSendResult == enEmailSendResult.Success)
{
stEmailArchiveEntry successEntry = new stEmailArchiveEntry(res, emailEntry.emailMessage);
successEntry.numRetries = emailEntry.numRetries + 1;
successEntry.firstSendAttempt = emailEntry.firstSendAttempt;
successEntry.lastSendAttempt = DateTime.Now;
successfulResends.Add(successEntry);
}
else
{
stEmailArchiveEntry failedEntry = new stEmailArchiveEntry(res, emailEntry.emailMessage);
failedEntry.firstSendAttempt = emailEntry.firstSendAttempt;
failedEntry.lastSendAttempt = DateTime.Now;
failedEntry.numRetries = emailEntry.numRetries + 1;
failedResends.Add(failedEntry);
}
}
_emailResendQueue.Clear();
if (failedResends.Count > 0)
{
foreach (stEmailArchiveEntry entry in failedResends)
{
if (entry.numRetries < _maxNumResendAttempts)
{
stEmailArchiveEntry newEntry = new stEmailArchiveEntry(entry.sendResult, entry.emailMessage);
newEntry.firstSendAttempt = entry.firstSendAttempt;
newEntry.lastSendAttempt = entry.lastSendAttempt;
newEntry.numRetries = entry.numRetries;
_emailResendQueue.Add(newEntry);
}
else
{
stEmailArchiveEntry lastEntry = new stEmailArchiveEntry(entry.sendResult, entry.emailMessage);
lastEntry.firstSendAttempt = entry.firstSendAttempt;
lastEntry.lastSendAttempt = entry.lastSendAttempt;
lastEntry.numRetries = entry.numRetries;
_emailLastResendList.Add(lastEntry);
}
}
}
_emailResendQueue.SaveToXmlFile(_emailResendQueueFile);
return(successfulResends);
}
/// <summary>
/// Sends the specified email.
/// </summary>
/// <param name="emailMsg">Email message object.</param>
/// <param name="resendOnError">If true, email manager will attempt to resend a message that fails due to an SMTP error.</param>
/// <returns>True if email sent successfully; otherwise false if an error occurred and email was not sent.</returns>
/// <remarks>Email manager will retry up to MaxNumResendAttempts times.</remarks>
public stEmailSendResult SendEmail(PFEmailMessage emailMsg, bool resendOnError)
{
stEmailSendResult result = new stEmailSendResult(enEmailSendResult.Unknown, enEmailFailedReason.Unknown);
bool queueForResend = false;
try
{
emailMsg.Send();
result.emailSendResult = enEmailSendResult.Success;
result.emailFailedReason = enEmailFailedReason.NoError;
result.failureMessages = string.Empty;
}
catch (System.Exception ex)
{
_msg.Length = 0;
_msg.Append("Attempt to send email to ");
_msg.Append(emailMsg.ToAddress);
_msg.Append(" failed. Error Message: ");
_msg.Append(PFTextProcessor.FormatErrorMessage(ex));
result.emailSendResult = enEmailSendResult.Failed;
result.failureMessages = _msg.ToString();
if (ex is SmtpException)
{
result.emailFailedReason = enEmailFailedReason.SmtpException;
queueForResend = true;
}
else if (ex is SmtpFailedRecipientException)
{
result.emailFailedReason = enEmailFailedReason.SmtpRecipientsException;
queueForResend = true;
}
else if (ex is InvalidOperationException)
{
result.emailFailedReason = enEmailFailedReason.InvalidOperationsException;
}
else if (ex is ArgumentNullException)
{
result.emailFailedReason = enEmailFailedReason.ArgumentNullException;
}
else
{
result.emailFailedReason = enEmailFailedReason.GeneralError;
}
}
finally
{
if (queueForResend && resendOnError)
{
stEmailArchiveEntry newEntry = new stEmailArchiveEntry(result, emailMsg);
newEntry.firstSendAttempt = DateTime.Now;
newEntry.lastSendAttempt = DateTime.Now;
_emailResendQueue.Add(newEntry);
_emailResendQueue.SaveToXmlFile(_emailResendQueueFile);
}
}
return(result);
}
