Yogesh Gaikwad created DIRMINA-1093:
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Summary: Ignore SME just like CNFE while checking deadlock in
DefaultIoFuture
Key: DIRMINA-1093
URL: https://issues.apache.org/jira/browse/DIRMINA-1093
Project: MINA
Issue Type: Bug
Components: Core
Affects Versions: 2.0.19, 3.0.0-M2, 2.0.17
Environment: Applicable to all platforms
Reporter: Yogesh Gaikwad
The problem occurs when we have a security manager enabled with restrictions.
After writing a request to
[LdapNetworkConnection|https://github.com/apache/directory-ldap-api/blob/52129503d7f2247bad4a5f73b234023b8158ff07/ldap/client/api/src/main/java/org/apache/directory/ldap/client/api/LdapNetworkConnection.java#L4934],
we wait for the completion of the request. For every
{code:java}writeFuture.awaitUninterruptibly{code} it checks for deadlock
[DefaultIoFuture|https://mina.apache.org/mina-project/apidocs/src-html/org/apache/mina/core/future/DefaultIoFuture.html]#checkDeadLock()
which is code that requires security permissions and throws following
exception:
{code:java}java.security.AccessControlException: access denied
("java.lang.RuntimePermission" "accessClassInPackage.sun.reflect"){code}
A proposed solution would be to ignore Java security manager exception (SME)
similar to Class not found exception(CNFE). For CNFE, we ignore the exception
and continue as we are just testing for deadlocks.
{code:java}
for (StackTraceElement s : stackTrace) {
try {
Class<?> cls =
DefaultIoFuture.class.getClassLoader().loadClass(s.getClassName());
if (IoProcessor.class.isAssignableFrom(cls)) {
throw new IllegalStateException("DEAD LOCK: " +
IoFuture.class.getSimpleName()
+ ".await() was invoked from an I/O processor
thread. " + "Please use "
+ IoFutureListener.class.getSimpleName()
+ " or configure a proper thread model
alternatively.");
}
} catch (ClassNotFoundException cnfe) {
// Ignore
}
}
{code}
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