hwanju commented on a change in pull request #14499: URL: https://github.com/apache/flink/pull/14499#discussion_r550363393
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/security/FlinkUserSecurityManager.java ########## @@ -0,0 +1,165 @@ +/* + * 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.Configuration; +import org.apache.flink.configuration.IllegalConfigurationException; +import org.apache.flink.configuration.SecurityOptions; +import org.apache.flink.runtime.UserSystemExitException; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.security.Permission; + +/** + * Flink user security manager to control unexpected user behaviors that potentially impact cluster availability, for + * example, it can warn or prevent user code from terminating JVM by System.exit or halt by logging or throwing an exception. + * This does not necessarily prevent malicious users who try to tweak security manager on their own, but more for being dependable + * against user mistakes by gracefully handling them informing users rather than causing silent unavailability. + */ +public class FlinkUserSecurityManager extends SecurityManager { + + /** + * The mode of how to handle user code attempting to exit JVM. + */ + public enum CheckExitMode { Review comment: Good idea. Will incorporate this comment. ########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/security/FlinkUserSecurityManager.java ########## @@ -0,0 +1,165 @@ +/* + * 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.Configuration; +import org.apache.flink.configuration.IllegalConfigurationException; +import org.apache.flink.configuration.SecurityOptions; +import org.apache.flink.runtime.UserSystemExitException; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.security.Permission; + +/** + * Flink user security manager to control unexpected user behaviors that potentially impact cluster availability, for + * example, it can warn or prevent user code from terminating JVM by System.exit or halt by logging or throwing an exception. + * This does not necessarily prevent malicious users who try to tweak security manager on their own, but more for being dependable + * against user mistakes by gracefully handling them informing users rather than causing silent unavailability. + */ +public class FlinkUserSecurityManager extends SecurityManager { + + /** + * The mode of how to handle user code attempting to exit JVM. + */ + public enum CheckExitMode { + /** No check is enabled, that is allowing exit without any action. */ + DISABLED, + /** Warn by logging but still allowing exit to be performed. */ + WARN, Review comment: Will use LOG. Thanks. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
