The line numbers in the stack trace you sent indicate an earlier version
of logback, probably version 0.9.20 or 0.9.21.
In the past we also ran into problems while testing SMTPAppender with
SubethaSMTP. If my memory serves me correctly, it was due to a race
condition. Maybe the server is shutdown before SMTPAppender has a chance
to receive the response of the server.
On 23/07/2010 4:54 PM, Jeff Jensen wrote:
Using Logback 0.9.24 and SLF4J 1.6.1.
I'm trying to resolve a hang problem with the
ch.qos.logback.classic.net.SMTPAppender in an integration test and using
SubethaSMTP as the email server. We have many tests working with
SubethaSMTP that send emails, but not with Logback, so I know it works
for the non-Logback configuration. I've also seen SMTPAppender work in
a different situation to the production email server. So I think I have
a config error somewhere with Logback setup to SubethaSMTP, but not sure
what, or there is an issue in the LB & SS interaction.
This is the SMTPAppender config:
<appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
<layout class="ch.qos.logback.classic.html.HTMLLayout">
<pattern>%date%contextName%thread%-5level%-55logger{55}%mdc%marker%msg</pattern>
<throwableRenderer
class="ch.qos.logback.classic.html.DefaultThrowableRenderer" />
</layout>
<SMTPHost>${mail.host.name}</SMTPHost>
<SMTPPort>${mail.port.number}</SMTPPort>
<From>${batch.email.address.from}</From>
<To>${batch.email.address.to.cmrdevelopers}</To>
<Subject>${batch.email.subject.prefix}Log Email: %msg</Subject>
<evaluator class="ch.qos.logback.classic.boolex.OnMarkerEvaluator">
<marker>EMAIL_DEVS</marker>
</evaluator>
</appender>
It hangs on call to SocketInputStream.socketRead0(), which is a native
method. Anyone seen/solved this before?
The timeout value is 0 on the socket read (means wait forever), so it is
waiting for a response to read.
While I'm trying to resolve this, one thing I'd like to do is set the
timeout value so at least it doesn't hang. I'm not sure how to do that
with SMTPAppender -
anyone know how? The SMTPAppender/SMTPAppenderBase class does not
have a timeout property, but SMTPAppenderBase does pull system
properties. I'm hoping there is a config file-based approach to do this
though...
The following is a call stack captured in the Eclipse debugger; the next
line-step would go into socketRead0() and hang.
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner at
localhost:3598
Thread [main] (Suspended)
SocketInputStream.read(byte[], int, int) line: 129
TraceInputStream.read(byte[], int, int) line: 97
BufferedInputStream.fill() line: 218
BufferedInputStream.read() line: 237
LineInputStream.readLine() line: 75
SMTPTransport.readServerResponse() line: 1440
SMTPTransport.openServer(String, int) line: 1260
SMTPTransport.protocolConnect(String, int, String, String)
line: 370
SMTPTransport(Service).connect(String, int, String, String)
line: 275
SMTPTransport(Service).connect(String, String, String)
line: 156
SMTPTransport(Service).connect() line: 105
Transport.send0(Message, Address[]) line: 168
Transport.send(Message) line: 98
SMTPAppender(SMTPAppenderBase<E>).sendBuffer(E) line: 292
SMTPAppender(SMTPAppenderBase<E>).append(E) line: 159
SMTPAppender(AppenderBase<E>).doAppend(E) line: 85
AppenderAttachableImpl<E>.appendLoopOnAppenders(E) line: 64
Logger.appendLoopOnAppenders(ILoggingEvent) line: 283
Logger.callAppenders(ILoggingEvent) line: 270
Logger.buildLoggingEventAndAppend(String, Marker, Level,
String, Object[], Throwable) line: 471
Logger.filterAndLog_0_Or3Plus(String, Marker, Level,
String, Object[], Throwable) line: 425
Logger.error(Marker, String) line: 592
LoggerEmailTest.testEmailSend() line: 99
NativeMethodAccessorImpl.invoke0(Method, Object, Object[])
line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object...) line: 597
FrameworkMethod$1.runReflectiveCall() line: 44
FrameworkMethod$1(ReflectiveCallable).run() line: 15
FrameworkMethod.invokeExplosively(Object, Object...) line: 41
InvokeMethod.evaluate() line: 20
RunBefores.evaluate() line: 28
RunBeforeTestMethodCallbacks.evaluate() line: 74
RunAfters.evaluate() line: 31
RunAfterTestMethodCallbacks.evaluate() line: 82
SpringRepeat.evaluate() line: 72
SpringJUnit4ClassRunner.runChild(FrameworkMethod,
RunNotifier) line: 240
SpringJUnit4ClassRunner(BlockJUnit4ClassRunner).runChild(Object,
RunNotifier) line: 50
ParentRunner$3.run() line: 193
ParentRunner$1.schedule(Runnable) line: 52
SpringJUnit4ClassRunner(ParentRunner<T>).runChildren(RunNotifier) line: 191
ParentRunner<T>.access$000(ParentRunner, RunNotifier) line: 42
ParentRunner$2.evaluate() line: 184
RunBeforeTestClassCallbacks.evaluate() line: 61
RunAfterTestClassCallbacks.evaluate() line: 70
SpringJUnit4ClassRunner(ParentRunner<T>).run(RunNotifier)
line: 236
SpringJUnit4ClassRunner.run(RunNotifier) line: 180
JUnit4TestClassReference(JUnit4TestReference).run(TestExecution) line: 46
TestExecution.run(ITestReference[]) line: 38
RemoteTestRunner.runTests(String[], String, TestExecution)
line: 467
RemoteTestRunner.runTests(TestExecution) line: 683
RemoteTestRunner.run() line: 390
RemoteTestRunner.main(String[]) line: 197
Thread [ReaderThread] (Running)
Thread [org.subethamail.smtp.server.SMTPServer] (Running)
Thread [org.subethamail.smtp.server.Session-/127.0.0.1:3601]
(Running)
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