| /** |
| * 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.hadoop.hbase.coprocessor; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| |
| import java.lang.reflect.InvocationTargetException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.Abortable; |
| import org.apache.hadoop.hbase.Coprocessor; |
| import org.apache.hadoop.hbase.CoprocessorEnvironment; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseConfiguration; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.junit.Assert; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category({SmallTests.class}) |
| public class TestCoprocessorHost { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestCoprocessorHost.class); |
| |
| /** |
| * An {@link Abortable} implementation for tests. |
| */ |
| private static class TestAbortable implements Abortable { |
| private volatile boolean aborted = false; |
| |
| @Override |
| public void abort(String why, Throwable e) { |
| this.aborted = true; |
| Assert.fail(); |
| } |
| |
| @Override |
| public boolean isAborted() { |
| return this.aborted; |
| } |
| } |
| |
| @Test |
| public void testDoubleLoadingAndPriorityValue() { |
| final Configuration conf = HBaseConfiguration.create(); |
| final String key = "KEY"; |
| final String coprocessor = "org.apache.hadoop.hbase.coprocessor.SimpleRegionObserver"; |
| |
| CoprocessorHost<RegionCoprocessor, CoprocessorEnvironment<RegionCoprocessor>> host; |
| host = new CoprocessorHostForTest<>(conf); |
| int overridePriority = Integer.MAX_VALUE - 1; |
| |
| final String coprocessor_v3 = |
| SimpleRegionObserverV3.class.getName() + "|" + overridePriority; |
| |
| // Try and load a coprocessor three times |
| conf.setStrings(key, coprocessor, coprocessor, coprocessor, |
| SimpleRegionObserverV2.class.getName(), coprocessor_v3); |
| host.loadSystemCoprocessors(conf, key); |
| |
| // Three coprocessors(SimpleRegionObserver, SimpleRegionObserverV2, |
| // SimpleRegionObserverV3) loaded |
| Assert.assertEquals(3, host.coprocEnvironments.size()); |
| |
| // Check the priority value |
| CoprocessorEnvironment<?> simpleEnv = host.findCoprocessorEnvironment( |
| SimpleRegionObserver.class.getName()); |
| CoprocessorEnvironment<?> simpleEnv_v2 = host.findCoprocessorEnvironment( |
| SimpleRegionObserverV2.class.getName()); |
| CoprocessorEnvironment<?> simpleEnv_v3 = host.findCoprocessorEnvironment( |
| SimpleRegionObserverV3.class.getName()); |
| |
| assertNotNull(simpleEnv); |
| assertNotNull(simpleEnv_v2); |
| assertNotNull(simpleEnv_v3); |
| assertEquals(Coprocessor.PRIORITY_SYSTEM, simpleEnv.getPriority()); |
| assertEquals(Coprocessor.PRIORITY_SYSTEM + 1, simpleEnv_v2.getPriority()); |
| assertEquals(overridePriority, simpleEnv_v3.getPriority()); |
| } |
| |
| public static class SimpleRegionObserverV2 extends SimpleRegionObserver { } |
| |
| public static class SimpleRegionObserverV3 extends SimpleRegionObserver { |
| |
| } |
| |
| private static class CoprocessorHostForTest<E extends Coprocessor> extends |
| CoprocessorHost<E, CoprocessorEnvironment<E>> { |
| final Configuration cpHostConf; |
| |
| public CoprocessorHostForTest(Configuration conf) { |
| super(new TestAbortable()); |
| cpHostConf = conf; |
| } |
| |
| @Override |
| public E checkAndGetInstance(Class<?> implClass) |
| throws InstantiationException, IllegalAccessException { |
| try { |
| return (E) implClass.getDeclaredConstructor().newInstance(); |
| } catch (InvocationTargetException | NoSuchMethodException e) { |
| throw (InstantiationException) new InstantiationException().initCause(e); |
| } |
| } |
| |
| @Override |
| public CoprocessorEnvironment<E> createEnvironment(final E instance, final int priority, |
| int sequence, Configuration conf) { |
| return new BaseEnvironment<>(instance, priority, 0, cpHostConf); |
| } |
| } |
| } |