private static void WriteResults(MassMail massMail, IEnumerable <DataTable> results)
{
try
{
var dataTable = new DataTable();
foreach (var result in results)
{
dataTable.Merge(result);
}
massMail.UpdateBlock(dataTable);
}
catch (Exception ex)
{
Logger.Log.Error("Unable to write batch: {0}", ex.Message);
}
}
public void Init()
{
_massMail = new MassMail(Config.BlockSize, Config.UserAgent, Config.ConnectionString, Config.Mode);
_templateCache = new ConcurrentDictionary<long, Lazy<Template>>();
_attachmentCache = new ConcurrentDictionary<long, Lazy<Attach>>();
_dkimSignerCache = new ConcurrentDictionary<string, DkimSigner>();
_domailKeySignerCache = new ConcurrentDictionary<string, DomainKeySigner>();
//Get all private keys
GetDkimSigners();
//*** Create pipeline ***
//Create TransformBlock that gets table of client data and make a list of objects from them.
_parseXmlDataBlock = new TransformBlock<DataTable, List<Mail>>(sendData => ParseXmlData(sendData),
new ExecutionDataflowBlockOptions
{
MaxDegreeOfParallelism = Config.ParseXmlMaxdop,
BoundedCapacity = Config.ParseXmlBufferSize
});
//Create TransformBlock that gets a list of client objects, send them email, and stores result in DataTable.
_sendEmailsBlock = new TransformBlock<List<Mail>, DataTable>(mails => SendEmails(_massMail, mails),
new ExecutionDataflowBlockOptions
{
MaxDegreeOfParallelism = Config.SendEmailsMaxdop,
BoundedCapacity = Config.SendEmailsMaxdop
});
//Create BatchBlock that holds several DataTable and then propagates them out as an array.
_batchResultBlock = new BatchBlock<DataTable>(Config.BatchSize,
new GroupingDataflowBlockOptions
{
BoundedCapacity = Config.BatchSize
});
//Create ActionBlock that writes result into DB
_writeResultsBlock = new ActionBlock<DataTable[]>(results => WriteResults(_massMail, results),
new ExecutionDataflowBlockOptions
{
BoundedCapacity = 1
});
//*** Build pipeline ***
// POST --> _parseXmlDataBlock --> _sendEmailsBlock --> _batchResultBlock --> _writeResultsBlock
_parseXmlDataBlock.LinkTo(_sendEmailsBlock);
_sendEmailsBlock.LinkTo(_batchResultBlock);
_batchResultBlock.LinkTo(_writeResultsBlock);
_parseXmlDataBlock.Completion.ContinueWith(t =>
{
if (t.IsFaulted) ((IDataflowBlock)_sendEmailsBlock).Fault(t.Exception);
else _sendEmailsBlock.Complete();
});
_sendEmailsBlock.Completion.ContinueWith(t =>
{
if (t.IsFaulted) ((IDataflowBlock)_batchResultBlock).Fault(t.Exception);
else _batchResultBlock.Complete();
});
_batchResultBlock.Completion.ContinueWith(t =>
{
if (t.IsFaulted) ((IDataflowBlock)_writeResultsBlock).Fault(t.Exception);
else _writeResultsBlock.Complete();
});
}
private DataTable SendEmails(MassMail massMail, IEnumerable<Mail> mails)
{
var mailClient = new DKIM.SmtpClient(Config.MailServer, Config.MailPort);
var resultTable = new DataTable();
var processedCount = 0;
var errorCount = 0;
resultTable.Columns.Add("ID");
resultTable.Columns.Add("Status");
resultTable.Columns.Add("SendMoment");
foreach (var mail in mails)
{
var result = 0;
var attachs = new List<Attach>();
try
{
if (mail.Model == null)
throw new XmlException(String.Format("error when creating model for ID:[{0}]", mail.Id));
//Load template
var id = mail.TemplateId;
var template = _templateCache.GetOrAdd(id, new Lazy<Template>(() => massMail.GetTemplate(id))).Value;
var body = Functions.RazorGetText(template.Body, template.Guid, mail.Model);
//Parse subject
var subject = mail.Subject;
if (!mail.StaticSubject)
subject = Functions.RazorGetText(mail.Subject, Functions.GetMd5(mail.Subject), mail.Model);
//Get attachments
if (mail.HasAttachment)
// ReSharper disable once LoopCanBeConvertedToQuery
foreach (DataRow attachRow in massMail.GetAttachments(mail.Id).Rows)
{
var attachId = (long)attachRow["AttachmentID"];
attachs.Add(_attachmentCache.GetOrAdd(attachId, new Lazy<Attach>(() => massMail.GetAttachment(attachId))).Value);
}
result = SendMail(mailClient, mail.From, mail.To, mail.Cc, subject, mail.ListId, body, template.IsHtml, attachs);
processedCount++;
}
catch (XmlException ex)
{
Logger.Log.Error("Unable to parse xml: {0}", ex.Message);
errorCount++;
result = (int)MailStatusCode.XMLERROR;
}
catch (RazorException ex)
{
Logger.Log.Error("Razor error: {0}", ex.Message);
errorCount++;
result = (int)MailStatusCode.RAZORERROR;
}
catch (SmtpFailedRecipientsException ex)
{
Logger.Log.Error("SMTP exception: {0}", ex.Message);
errorCount++;
result = (int)ex.StatusCode;
}
catch (Exception ex)
{
Logger.Log.Error("Unable to send email: {0}", ex.Message);
errorCount++;
result = (int)MailStatusCode.FAILED;
}
finally
{
resultTable.Rows.Add(new object[] { mail.Id, result, DateTime.Now });
}
}
MessagesSend(processedCount, errorCount);
mailClient.Dispose();
return resultTable;
}
private static void WriteResults(MassMail massMail, IEnumerable<DataTable> results)
{
try
{
var dataTable = new DataTable();
foreach (var result in results)
dataTable.Merge(result);
massMail.UpdateBlock(dataTable);
}
catch (Exception ex)
{
Logger.Log.Error("Unable to write batch: {0}", ex.Message);
}
}
public void Init()
{
_massMail = new MassMail(Config.BlockSize, Config.UserAgent, Config.ConnectionString, Config.Mode);
_templateCache = new ConcurrentDictionary <long, Lazy <Template> >();
_attachmentCache = new ConcurrentDictionary <long, Lazy <Attach> >();
_dkimSignerCache = new ConcurrentDictionary <string, DkimSigner>();
_domailKeySignerCache = new ConcurrentDictionary <string, DomainKeySigner>();
//Get all private keys
GetDkimSigners();
//*** Create pipeline ***
//Create TransformBlock that gets table of client data and make a list of objects from them.
_parseXmlDataBlock = new TransformBlock <DataTable, List <Mail> >(sendData => ParseXmlData(sendData),
new ExecutionDataflowBlockOptions
{
MaxDegreeOfParallelism = Config.ParseXmlMaxdop,
BoundedCapacity = Config.ParseXmlBufferSize
});
//Create TransformBlock that gets a list of client objects, send them email, and stores result in DataTable.
_sendEmailsBlock = new TransformBlock <List <Mail>, DataTable>(mails => SendEmails(_massMail, mails),
new ExecutionDataflowBlockOptions
{
MaxDegreeOfParallelism = Config.SendEmailsMaxdop,
BoundedCapacity = Config.SendEmailsMaxdop
});
//Create BatchBlock that holds several DataTable and then propagates them out as an array.
_batchResultBlock = new BatchBlock <DataTable>(Config.BatchSize,
new GroupingDataflowBlockOptions
{
BoundedCapacity = Config.BatchSize
});
//Create ActionBlock that writes result into DB
_writeResultsBlock = new ActionBlock <DataTable[]>(results => WriteResults(_massMail, results),
new ExecutionDataflowBlockOptions
{
BoundedCapacity = 1
});
//*** Build pipeline ***
// POST --> _parseXmlDataBlock --> _sendEmailsBlock --> _batchResultBlock --> _writeResultsBlock
_parseXmlDataBlock.LinkTo(_sendEmailsBlock);
_sendEmailsBlock.LinkTo(_batchResultBlock);
_batchResultBlock.LinkTo(_writeResultsBlock);
_parseXmlDataBlock.Completion.ContinueWith(t =>
{
if (t.IsFaulted)
{
((IDataflowBlock)_sendEmailsBlock).Fault(t.Exception);
}
else
{
_sendEmailsBlock.Complete();
}
});
_sendEmailsBlock.Completion.ContinueWith(t =>
{
if (t.IsFaulted)
{
((IDataflowBlock)_batchResultBlock).Fault(t.Exception);
}
else
{
_batchResultBlock.Complete();
}
});
_batchResultBlock.Completion.ContinueWith(t =>
{
if (t.IsFaulted)
{
((IDataflowBlock)_writeResultsBlock).Fault(t.Exception);
}
else
{
_writeResultsBlock.Complete();
}
});
}
private DataTable SendEmails(MassMail massMail, IEnumerable <Mail> mails)
{
var mailClient = new DKIM.SmtpClient(Config.MailServer, Config.MailPort);
var resultTable = new DataTable();
var processedCount = 0;
var errorCount = 0;
resultTable.Columns.Add("ID");
resultTable.Columns.Add("Status");
resultTable.Columns.Add("SendMoment");
foreach (var mail in mails)
{
var result = 0;
var attachs = new List <Attach>();
try
{
if (mail.Model == null)
{
throw new XmlException(String.Format("error when creating model for ID:[{0}]", mail.Id));
}
//Load template
var id = mail.TemplateId;
var template = _templateCache.GetOrAdd(id, new Lazy <Template>(() => massMail.GetTemplate(id))).Value;
var body = Functions.RazorGetText(template.Body, template.Guid, mail.Model);
//Parse subject
var subject = mail.Subject;
if (!mail.StaticSubject)
{
subject = Functions.RazorGetText(mail.Subject, Functions.GetMd5(mail.Subject), mail.Model);
}
//Get attachments
if (mail.HasAttachment)
{
// ReSharper disable once LoopCanBeConvertedToQuery
foreach (DataRow attachRow in massMail.GetAttachments(mail.Id).Rows)
{
var attachId = (long)attachRow["AttachmentID"];
attachs.Add(_attachmentCache.GetOrAdd(attachId, new Lazy <Attach>(() => massMail.GetAttachment(attachId))).Value);
}
}
result = SendMail(mailClient, mail.From, mail.To, mail.Cc, subject, mail.ListId, body, template.IsHtml, attachs);
processedCount++;
}
catch (XmlException ex)
{
Logger.Log.Error("Unable to parse xml: {0}", ex.Message);
errorCount++;
result = (int)MailStatusCode.XMLERROR;
}
catch (RazorException ex)
{
Logger.Log.Error("Razor error: {0}", ex.Message);
errorCount++;
result = (int)MailStatusCode.RAZORERROR;
}
catch (SmtpFailedRecipientsException ex)
{
Logger.Log.Error("SMTP exception: {0}", ex.Message);
errorCount++;
result = (int)ex.StatusCode;
}
catch (Exception ex)
{
Logger.Log.Error("Unable to send email: {0}", ex.Message);
errorCount++;
result = (int)MailStatusCode.FAILED;
}
finally
{
resultTable.Rows.Add(new object[] { mail.Id, result, DateTime.Now });
}
}
MessagesSend(processedCount, errorCount);
mailClient.Dispose();
return(resultTable);
}
