private void MessageHandler(Byte[] body, MessageProperties mp, MessageReceivedInfo mi)
{
using (var exdb = new exDb(dbConnStr)) {
exdb.Log = dbLog;
new LogRecord()
{
Source = this._Name,
HostId = this.HostId,
QueueId = this.QueueId,
Message = String.Format("Принято сообщение {0} байт", body.Length),
Details = this.QueueFullName
}
.TryWrite(exdb);
var msg = Queue.Base64Data ? Convert.ToBase64String(body)
: this.Encoding.GetString(body);
var record = new Inbound()
{
QueueId = this.QueueId,
DateReceived = DateTime.Now,
Message = msg
};
exdb.Inbound.InsertOnSubmit(record);
// Rethrow = true. Если не удалось записать сообщение в БД, таск должен упасть, чтобы EasyNetQ не отправил Ack раббиту
exdb.TrySubmitChanges(true);
new LogRecord()
{
Source = this._Name,
HostId = this.HostId,
QueueId = this.QueueId,
Inbound_Id = record.Message_Id,
Message = String.Format("Записали {0}сообщение в БД", Queue.Base64Data ? "base64 " : ""),
Details = String.Format("{0} символов", msg.Length)
}
.TryWrite(exdb);
}
}
public override void Start()
{
var aBus = Bus.Advanced;
if (DebugFlag.Enabled)
{
try {
dbLog = new StreamWriter(Path.Combine(Path.GetTempPath(), Exchange_Svc.MyServiceName, String.Format("{0}.dblog", _Name)))
{
AutoFlush = true
};
} catch (Exception ex) {
Trace.TraceWarning("{2}\t{0}: не удалось создать журнал dblog: {1}", _Name, ex.Message, DateTime.Now);
}
}
new LogRecord()
{
Source = this._Name,
HostId = this.HostId,
QueueId = this.QueueId,
Message = "Обработчик отправки сообщений запущен",
Details = QueueFullName
}
.TryWrite(dbConnStr, dbLog);
int MsgCounter = 0;
int TotalMsgCounter = 0;
long BytesProcessed = 0;
long TotalBytesProcessed = 0;
while (!ShouldStop)
{
using (var exdb = new exDb(dbConnStr)) {
exdb.Log = dbLog;
Outbound message;
while (!ShouldStop && aBus.IsConnected &&
null != (message = exdb.Outbound.FirstOrDefault(o => o.QueueId == this.QueueId && o.DateSent == null)))
{
new LogRecord()
{
Source = this._Name,
HostId = this.HostId,
QueueId = this.QueueId,
Outbound_Id = message.Message_Id,
Message = "Начинаем отправку сообщения...",
Details = String.Format("{0} символов", message.Message.Length)
}
.TryWrite(exdb);
byte[] data;
//TODO: every xx (1000?) messages do gc.collect(2) to clear LOH
try {
data = Queue.Base64Data ? Convert.FromBase64String(message.Message)
: Encoding.UTF8.GetBytes(message.Message);
BytesProcessed += sizeof(byte) * data.Length;
TotalBytesProcessed += sizeof(byte) * data.Length;
MsgCounter++;
TotalMsgCounter++;
} catch (Exception ex) {
new LogRecord()
{
Source = this._Name,
HostId = this.HostId,
QueueId = this.QueueId,
Outbound_Id = message.Message_Id,
IsError = true,
Message = "Ошибка декодирования base64",
Details = ex.Message
}
.TryWrite(exdb);
message.ErrorFlag = true;
message.DateSent = new DateTime(1900, 1, 1);
exdb.TrySubmitChanges();
continue;
}
if (IntPtr.Size == 4 && BytesProcessed > 3 * (1024 * 1024 * 512))
{
LogInfo(exdb, "Forcing GC.Collect(2)",
String.Format("Processed {0} messages, {1} MB since last GC. Total {2} messages, {3} MB. Reported GC UsedMem {4} MB"
, MsgCounter, BytesProcessed / (1024 * 1024), TotalMsgCounter, TotalBytesProcessed / (1024 * 1024), GC.GetTotalMemory(false) / (1024 * 1024)));
// new LogRecord() {
// Source = this._Name,
// HostId = this.HostId,
// QueueId = this.QueueId,
// Message = "Forcing GC.Collect(2)",
// Details = String.Format("Processed {0} messages, {1} MB since last GC ({2} msgs, {3} MB total). Reported GC UsedMem {4} MB"
// ,MsgCounter, BytesProcessed/(1024*1024), TotalMsgCounter, TotalBytesProcessed/(1024*1024), GC.GetTotalMemory(false)/(1024*1024)) }
// .TryWrite(exdb);
GC.Collect(2);
MsgCounter = 0;
BytesProcessed = 0;
LogInfo(exdb, "Finished GC.Collect(2)",
String.Format("Reported GC UsedMem {0} MB", GC.GetTotalMemory(false) / (1024 * 1024)));
// new LogRecord() {
// Source = this._Name,
// HostId = this.HostId,
// QueueId = this.QueueId,
// Message = "Finished GC.Collect(2)",
// Details = String.Format("Reported GC UsedMem {0} MB", GC.GetTotalMemory(false)/(1024*1024)) }
// .TryWrite(exdb);
}
new LogRecord()
{
Source = this._Name,
HostId = this.HostId,
QueueId = this.QueueId,
Outbound_Id = message.Message_Id,
Message = Queue.Base64Data ? "Декодировали base64" : "Сформировали массив байт",
Details = String.Format("{0} байт", data.Length)
}
.TryWrite(exdb);
try {
var mp = new MessageProperties();
if (!String.IsNullOrWhiteSpace(message.AppMsgId))
{
mp.MessageId = message.AppMsgId;
}
IExchange ex = String.IsNullOrWhiteSpace(this.ExchangeName) ? Exchange.GetDefault() :
new Exchange(this.ExchangeName);
aBus.Publish(ex, this.QueueName, true, false, mp, data);
} catch (Exception ex) {
new LogRecord()
{
Source = this._Name,
HostId = this.HostId,
QueueId = this.QueueId,
Outbound_Id = message.Message_Id,
IsError = true,
Message = "Ошибка при отправке сообщения",
Details = ex.Message
}
.TryWrite(exdb);
Thread.Sleep(PollInterval);
continue;
}
new LogRecord()
{
Source = this._Name,
HostId = this.HostId,
QueueId = this.QueueId,
Outbound_Id = message.Message_Id,
Message = "Сообщение успешно отправлено!",
Details = this.QueueFullName
}
.TryWrite(exdb);
message.DateSent = DateTime.Now;
exdb.TrySubmitChanges();
}
}
Thread.Sleep(PollInterval);
}
// Вышли из главного цикла (ShouldStop = true)
new LogRecord()
{
Source = this._Name,
HostId = this.HostId,
QueueId = this.QueueId,
Message = "Получена команда остановить обработчик. Нормальное завершение работы",
Details = QueueFullName
}
.TryWrite(dbConnStr, dbLog);
}
