[slf4j-user] Asynchronous SMTPAppender

[ceki]

Hi Joe,

Lines 188 and 189 of SMTPAppenderBase should answer the question. Please 
see http://goo.gl/czvS4

HTH,

-- 
Ceki
http://twitter.com/#!/ceki


On 17.01.2012 17:17, Joe Wang wrote:
> Hi,
>
> I see in the docs (http://logback.qos.ch/manual/appenders.html) it says
> "SMTP email transmission (sending) is performed asynchronously". I'm
> looking on grepcode.com at version 1.2.25. I can't see how it is sending
> asynchronously.
>
> SMTPAppender.java
>
> void    [More ...]  <http://grepcode.com/file/repository.springsource.com/org.slf4j/com.springsource.slf4j.nlog4j/1.2.25/org/apache/log4j/net/SMTPAppender.java#>append  <http://grepcode.com/file/repository.springsource.com/org.slf4j/com.springsource.slf4j.nlog4j/1.2.25/org/apache/log4j/AppenderSkeleton.java#AppenderSkeleton.append%28org.apache.log4j.spi.LoggingEvent%29>(LoggingEvent  <http://grepcode.com/file/repository.springsource.com/org.slf4j/com.springsource.slf4j.nlog4j/1.2.25/org/apache/log4j/spi/LoggingEvent.java#LoggingEvent>  event)  {
>
> ...
>
> <http://grepcode.com/file/repository.springsource.com/org.slf4j/com.springsource.slf4j.nlog4j/1.2.25/org/apache/log4j/net/SMTPAppender.java#>
>
>             sendBuffer  <http://grepcode.com/file/repository.springsource.com/org.slf4j/com.springsource.slf4j.nlog4j/1.2.25/org/apache/log4j/net/SMTPAppender.java#SMTPAppender.sendBuffer%28%29>();
>
> ...
>
> }
>
>
>
>
> void    [More ...]  <http://grepcode.com/file/repository.springsource.com/org.slf4j/com.springsource.slf4j.nlog4j/1.2.25/org/apache/log4j/net/SMTPAppender.java#>sendBuffer()  {
>
> ...
>
> <http://grepcode.com/file/repository.springsource.com/org.slf4j/com.springsource.slf4j.nlog4j/1.2.25/org/apache/log4j/net/SMTPAppender.java#>
>
>             Transport.send  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#Transport.send%28javax.mail.Message%29>(msg  <http://grepcode.com/file/repository.springsource.com/org.slf4j/com.springsource.slf4j.nlog4j/1.2.25/org/apache/log4j/net/SMTPAppender.java#SMTPAppender.0msg>
>
> );
>
>   ...
>
> }
>
>
>
> Transport.java
>
> public  static  void    [More ...]  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>send(Message  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Message.java#Message>  msg,  Address  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Address.java#Address%5B%5D>[]  addresses)
>
> throws MessagingException
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/MessagingException.java#MessagingException>
> {
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	msg.saveChanges  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Message.java#Message.saveChanges%28%29>();
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	send0  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#Transport.send0%28javax.mail.Message%2Cjavax.mail.Address%5B%5D%29>(msg,  addresses);
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
>         }
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> private  static  void    [More ...]  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>send0(Message  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Message.java#Message>  msg,  Address  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Address.java#Address%5B%5D>[]  addresses)
>
> throws MessagingException
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/MessagingException.java#MessagingException>{
> ...<http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	/*
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	  *  Optimize  the  case  of  a  single  protocol.
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	  */
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	if  (dsize  ==  1)  {
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	        transport  =  s.getTransport  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Session.java#Session.getTransport%28javax.mail.Address%29>(addresses[0]);
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	        try  {
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 		transport.connect  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Service.java#Service.connect%28%29>();
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 		transport.sendMessage  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#Transport.sendMessage%28javax.mail.Message%2Cjavax.mail.Address%5B%5D%29>(msg,  addresses);
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	        }  finally  {
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 		transport.close  <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Service.java#Service.close%28%29>();
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	        }
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	        return;
>
> <http://grepcode.com/file/repository.springsource.com/javax.mail/com.springsource.javax.mail/1.4.1/javax/mail/Transport.java#>
>
> 	}
>
> ...
> }
>