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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