diff options
Diffstat (limited to 'qpid/java/common')
3 files changed, 147 insertions, 5 deletions
diff --git a/qpid/java/common/src/main/java/org/apache/qpid/pool/ReferenceCountingExecutorService.java b/qpid/java/common/src/main/java/org/apache/qpid/pool/ReferenceCountingExecutorService.java index a6df71464b..c9fbd824c5 100644 --- a/qpid/java/common/src/main/java/org/apache/qpid/pool/ReferenceCountingExecutorService.java +++ b/qpid/java/common/src/main/java/org/apache/qpid/pool/ReferenceCountingExecutorService.java @@ -21,7 +21,6 @@ package org.apache.qpid.pool; import java.util.concurrent.ExecutorService; -import java.util.concurrent.Executors; import java.util.concurrent.LinkedBlockingQueue; import java.util.concurrent.ThreadFactory; import java.util.concurrent.ThreadPoolExecutor; @@ -82,10 +81,8 @@ public class ReferenceCountingExecutorService /** Holds the number of executor threads to create. */ private int _poolSize = Integer.getInteger("amqj.read_write_pool_size", DEFAULT_POOL_SIZE); - /** Thread Factory used to create thread of the pool. Uses the default implementation provided by - * {@link java.util.concurrent.Executors#defaultThreadFactory()} unless reset by the caller. - */ - private ThreadFactory _threadFactory = Executors.defaultThreadFactory(); + /** Thread Factory used to create thread of the pool. */ + private ThreadFactory _threadFactory = new SuppressingInheritedAccessControlContextThreadFactory(); /** * Retrieves the singleton instance of this reference counter. diff --git a/qpid/java/common/src/main/java/org/apache/qpid/pool/SuppressingInheritedAccessControlContextThreadFactory.java b/qpid/java/common/src/main/java/org/apache/qpid/pool/SuppressingInheritedAccessControlContextThreadFactory.java new file mode 100644 index 0000000000..37ce8f5d67 --- /dev/null +++ b/qpid/java/common/src/main/java/org/apache/qpid/pool/SuppressingInheritedAccessControlContextThreadFactory.java @@ -0,0 +1,50 @@ +/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + */ +package org.apache.qpid.pool; + + +import javax.security.auth.Subject; +import java.security.PrivilegedAction; +import java.util.concurrent.Executors; +import java.util.concurrent.ThreadFactory; + +/** + * <code>ThreadFactory</code> to create threads with empty inherited <code>java.security.AccessControlContext</code> + * <p></p> + * It delegates thread creation to <code>Executors</code> default thread factory. + */ +public class SuppressingInheritedAccessControlContextThreadFactory implements ThreadFactory +{ + private final ThreadFactory _defaultThreadFactory = Executors.defaultThreadFactory(); + + @Override + public Thread newThread(final Runnable runnable) + { + return Subject.doAsPrivileged(null, new PrivilegedAction<Thread>() + { + @Override + public Thread run() + { + return _defaultThreadFactory.newThread(runnable); + } + }, null); + } +} diff --git a/qpid/java/common/src/test/java/org/apache/qpid/pool/SuppressingInheritedAccessControlContextThreadFactoryTest.java b/qpid/java/common/src/test/java/org/apache/qpid/pool/SuppressingInheritedAccessControlContextThreadFactoryTest.java new file mode 100644 index 0000000000..b8cf8a40b0 --- /dev/null +++ b/qpid/java/common/src/test/java/org/apache/qpid/pool/SuppressingInheritedAccessControlContextThreadFactoryTest.java @@ -0,0 +1,95 @@ +/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + */ +package org.apache.qpid.pool; + + +import javax.security.auth.Subject; +import java.security.AccessControlContext; +import java.security.AccessController; +import java.security.Principal; +import java.security.PrivilegedAction; +import java.util.Collections; +import java.util.Set; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicReference; + +import org.apache.qpid.test.utils.QpidTestCase; + +public class SuppressingInheritedAccessControlContextThreadFactoryTest extends QpidTestCase +{ + public void testAccessControlContextIsNotInheritedByThread() throws Exception + { + final String principalName = getName(); + final CountDownLatch latch = new CountDownLatch(1); + + final AtomicReference<AccessControlContext> threadAccessControlContextCapturer = new AtomicReference<>(); + final AtomicReference<AccessControlContext> callerAccessControlContextCapturer = new AtomicReference<>(); + + final Set<Principal> principals = Collections.<Principal>singleton(new Principal() + { + @Override + public String getName() + { + return principalName; + } + + @Override + public String toString() + { + return "Principal{" + getName() + "}"; + } + }); + + Subject subject = new Subject(false, principals, Collections.EMPTY_SET, Collections.EMPTY_SET); + + Subject.doAs(subject, new PrivilegedAction<Void>() + { + @Override + public Void run() + { + callerAccessControlContextCapturer.set(AccessController.getContext()); + SuppressingInheritedAccessControlContextThreadFactory factory = new SuppressingInheritedAccessControlContextThreadFactory(); + factory.newThread(new Runnable() + { + + public void run() + { + threadAccessControlContextCapturer.set(AccessController.getContext()); + latch.countDown(); + } + + }).start(); + return null; + } + }); + + latch.await(3, TimeUnit.SECONDS); + + Subject callerSubject = Subject.getSubject(callerAccessControlContextCapturer.get()); + Subject threadSubject = Subject.getSubject(threadAccessControlContextCapturer.get()); + + assertEquals("Unexpected subject in main thread", callerSubject, subject); + assertNull("Unexpected subject in executor thread", threadSubject); + + } + +} |