tillrohrmann commented on a change in pull request #17409: URL: https://github.com/apache/flink/pull/17409#discussion_r721435775
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/highavailability/zookeeper/InternalCuratorResource.java ########## @@ -0,0 +1,51 @@ +/* + * 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.highavailability.zookeeper; + +import org.apache.flink.util.Preconditions; + +import org.apache.flink.shaded.curator4.org.apache.curator.framework.CuratorFramework; +import org.apache.flink.shaded.curator4.org.apache.curator.framework.api.UnhandledErrorListener; + +import java.io.Closeable; + +/** A wrapper for curator resource, which should be release together upon shutting down. */ +public class InternalCuratorResource implements Closeable { + + private final CuratorFramework client; + + private final UnhandledErrorListener listener; + + public InternalCuratorResource(CuratorFramework client, UnhandledErrorListener listener) { + Preconditions.checkNotNull(client); + Preconditions.checkNotNull(listener); + this.client = client; + this.listener = listener; + } + + @Override + public void close() { + client.getUnhandledErrorListenable().removeListener(listener); + client.close(); + } + + public CuratorFramework getClient() { Review comment: maybe ```suggestion public CuratorFramework asCuratorFramework() { ``` ########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/highavailability/zookeeper/InternalCuratorResource.java ########## @@ -0,0 +1,51 @@ +/* + * 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.highavailability.zookeeper; + +import org.apache.flink.util.Preconditions; + +import org.apache.flink.shaded.curator4.org.apache.curator.framework.CuratorFramework; +import org.apache.flink.shaded.curator4.org.apache.curator.framework.api.UnhandledErrorListener; + +import java.io.Closeable; + +/** A wrapper for curator resource, which should be release together upon shutting down. */ +public class InternalCuratorResource implements Closeable { Review comment: Maybe we could call it `CuratorFrameworkWithUnhandledErrorListener`. ########## File path: flink-runtime/src/test/java/org/apache/flink/runtime/leaderelection/ZooKeeperLeaderElectionTest.java ########## @@ -434,27 +446,29 @@ public void testExceptionForwarding() throws Exception { final TestingLeaderElectionEventHandler electionEventHandler = new TestingLeaderElectionEventHandler(TEST_LEADER); - CuratorFramework client = null; + InternalCuratorResource curatorResource = null; final CreateBuilder mockCreateBuilder = mock(CreateBuilder.class, Mockito.RETURNS_DEEP_STUBS); final String exMsg = "Test exception"; final Exception testException = new Exception(exMsg); try { - client = + curatorResource = spy( ZooKeeperUtils.startCuratorFramework( configuration, NoOpFatalErrorHandler.INSTANCE)); - doAnswer(invocation -> mockCreateBuilder).when(client).create(); + doAnswer(invocation -> mockCreateBuilder).when(curatorResource.getClient()).create(); Review comment: I think this is causing `ZooKeeperLeaderElectionTest.testExceptionForwarding:461 UnfinishedStubbing`. ########## File path: flink-runtime/src/test/java/org/apache/flink/runtime/leaderelection/ZooKeeperLeaderElectionTest.java ########## @@ -434,27 +446,29 @@ public void testExceptionForwarding() throws Exception { final TestingLeaderElectionEventHandler electionEventHandler = new TestingLeaderElectionEventHandler(TEST_LEADER); - CuratorFramework client = null; + InternalCuratorResource curatorResource = null; final CreateBuilder mockCreateBuilder = mock(CreateBuilder.class, Mockito.RETURNS_DEEP_STUBS); final String exMsg = "Test exception"; final Exception testException = new Exception(exMsg); try { - client = + curatorResource = spy( ZooKeeperUtils.startCuratorFramework( configuration, NoOpFatalErrorHandler.INSTANCE)); - doAnswer(invocation -> mockCreateBuilder).when(client).create(); + doAnswer(invocation -> mockCreateBuilder).when(curatorResource.getClient()).create(); Review comment: What this test effectively does is that it ensures that exception that are thrown in the `ZooKeeperLeaderElectionDriver.writeLeaderInformation()` will be forwarded to the fatal error handler. Maybe we could actually get rid of the mocking by introducing a `CuratorFrameworkFacade` that we can configure to fail on the `create()` call or some other call, for example. ########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/highavailability/zookeeper/InternalCuratorResource.java ########## @@ -0,0 +1,51 @@ +/* + * 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.highavailability.zookeeper; + +import org.apache.flink.util.Preconditions; + +import org.apache.flink.shaded.curator4.org.apache.curator.framework.CuratorFramework; +import org.apache.flink.shaded.curator4.org.apache.curator.framework.api.UnhandledErrorListener; + +import java.io.Closeable; + +/** A wrapper for curator resource, which should be release together upon shutting down. */ +public class InternalCuratorResource implements Closeable { + + private final CuratorFramework client; + + private final UnhandledErrorListener listener; + + public InternalCuratorResource(CuratorFramework client, UnhandledErrorListener listener) { + Preconditions.checkNotNull(client); + Preconditions.checkNotNull(listener); + this.client = client; Review comment: nit: ```suggestion this.client = Preconditions.checkNotNull(client); ``` -- This is an automated message from the Apache Git Service. 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