hwanju commented on a change in pull request #14499: URL: https://github.com/apache/flink/pull/14499#discussion_r555767838
########## File path: flink-runtime/src/test/java/org/apache/flink/runtime/security/FlinkSecurityManagerTest.java ########## @@ -0,0 +1,415 @@ +/* + * 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.flink.runtime.security; + +import org.apache.flink.configuration.ClusterOptions; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.configuration.IllegalConfigurationException; +import org.apache.flink.core.testutils.CheckedThread; +import org.apache.flink.runtime.UserSystemExitException; +import org.apache.flink.util.TestLogger; + +import org.junit.After; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +import java.security.Permission; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.atomic.AtomicInteger; + +import static org.apache.flink.core.testutils.CommonTestUtils.assertThrows; +import static org.hamcrest.Matchers.is; +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertNotNull; +import static org.junit.Assert.assertNull; +import static org.junit.Assert.assertThat; +import static org.junit.Assert.assertTrue; +import static org.junit.Assert.fail; + +/** Tests for {@code FlinkUserSecurityManager}. */ +public class FlinkSecurityManagerTest extends TestLogger { + + private static final int TEST_EXIT_CODE = 123; + SecurityManager originalSecurityManager; + FlinkSecurityManager flinkSecurityManager; + + @Before + public void setUp() { + originalSecurityManager = System.getSecurityManager(); + } + + @After + public void tearDown() { + System.setSecurityManager(originalSecurityManager); + } + + @Test(expected = UserSystemExitException.class) + public void testThrowUserExit() { + flinkSecurityManager = + new FlinkSecurityManager(ClusterOptions.UserSystemExitMode.THROW, null); + flinkSecurityManager.monitorUserSystemExit(); + flinkSecurityManager.checkExit(TEST_EXIT_CODE); + } + + @Test + public void testToggleUserExit() { + flinkSecurityManager = + new FlinkSecurityManager(ClusterOptions.UserSystemExitMode.THROW, null); + flinkSecurityManager.checkExit(TEST_EXIT_CODE); + flinkSecurityManager.monitorUserSystemExit(); + try { + flinkSecurityManager.checkExit(TEST_EXIT_CODE); + fail(); + } catch (UserSystemExitException ignored) { + } + flinkSecurityManager.unmonitorUserSystemExit(); + flinkSecurityManager.checkExit(TEST_EXIT_CODE); + } + + @Test + public void testPerThreadThrowUserExit() throws Exception { + flinkSecurityManager = + new FlinkSecurityManager(ClusterOptions.UserSystemExitMode.THROW, null); + ExecutorService executorService = Executors.newSingleThreadExecutor(); + // Async thread test before enabling monitoring ensures it does not throw while prestarting + // worker thread, which is to be unmonitored and tested after enabling monitoring enabled. + CompletableFuture<Void> future = + CompletableFuture.runAsync( + () -> flinkSecurityManager.checkExit(TEST_EXIT_CODE), executorService); + future.get(); + flinkSecurityManager.monitorUserSystemExit(); + try { + flinkSecurityManager.checkExit(TEST_EXIT_CODE); + fail(); + } catch (UserSystemExitException ignored) { + } + // This threaded exit should be allowed as thread is not spawned while monitor is enabled. + future = + CompletableFuture.runAsync( + () -> flinkSecurityManager.checkExit(TEST_EXIT_CODE), executorService); + future.get(); + } + + @Test + public void testInheritedThrowUserExit() throws Exception { + flinkSecurityManager = + new FlinkSecurityManager(ClusterOptions.UserSystemExitMode.THROW, null); + flinkSecurityManager.monitorUserSystemExit(); + try { + flinkSecurityManager.checkExit(TEST_EXIT_CODE); + fail(); + } catch (UserSystemExitException ignored) { + } + CheckedThread thread = + new CheckedThread() { + @Override + public void go() { + try { + flinkSecurityManager.checkExit(TEST_EXIT_CODE); + fail(); + } catch (UserSystemExitException ignored) { + } catch (Throwable t) { + fail(); + } + } + }; + thread.start(); + thread.sync(); + } + + @Test + public void testLogUserExit() { Review comment: You can see some difference. `test*Configuration` is a little more end-to-end via configuration setting (testing `fromConfiguration`), while others are not using `Configuration` rather directly using constructor. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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