| /** |
| * 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.net; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.util.List; |
| |
| /** |
| * Test some other details of the switch mapping |
| */ |
| public class TestSwitchMapping extends Assert { |
| |
| |
| /** |
| * Verify the switch mapping query handles arbitrary DNSToSwitchMapping |
| * implementations |
| * |
| * @throws Throwable on any problem |
| */ |
| @Test |
| public void testStandaloneClassesAssumedMultiswitch() throws Throwable { |
| DNSToSwitchMapping mapping = new StandaloneSwitchMapping(); |
| assertFalse("Expected to be multi switch " + mapping, |
| AbstractDNSToSwitchMapping.isMappingSingleSwitch(mapping)); |
| } |
| |
| |
| /** |
| * Verify the cached mapper delegates the switch mapping query to the inner |
| * mapping, which again handles arbitrary DNSToSwitchMapping implementations |
| * |
| * @throws Throwable on any problem |
| */ |
| @Test |
| public void testCachingRelays() throws Throwable { |
| CachedDNSToSwitchMapping mapping = |
| new CachedDNSToSwitchMapping(new StandaloneSwitchMapping()); |
| assertFalse("Expected to be multi switch " + mapping, |
| mapping.isSingleSwitch()); |
| } |
| |
| |
| /** |
| * Verify the cached mapper delegates the switch mapping query to the inner |
| * mapping, which again handles arbitrary DNSToSwitchMapping implementations |
| * |
| * @throws Throwable on any problem |
| */ |
| @Test |
| public void testCachingRelaysStringOperations() throws Throwable { |
| Configuration conf = new Configuration(); |
| String scriptname = "mappingscript.sh"; |
| conf.set(CommonConfigurationKeys.NET_TOPOLOGY_SCRIPT_FILE_NAME_KEY, |
| scriptname); |
| ScriptBasedMapping scriptMapping = new ScriptBasedMapping(conf); |
| assertTrue("Did not find " + scriptname + " in " + scriptMapping, |
| scriptMapping.toString().contains(scriptname)); |
| CachedDNSToSwitchMapping mapping = |
| new CachedDNSToSwitchMapping(scriptMapping); |
| assertTrue("Did not find " + scriptname + " in " + mapping, |
| mapping.toString().contains(scriptname)); |
| } |
| |
| /** |
| * Verify the cached mapper delegates the switch mapping query to the inner |
| * mapping, which again handles arbitrary DNSToSwitchMapping implementations |
| * |
| * @throws Throwable on any problem |
| */ |
| @Test |
| public void testCachingRelaysStringOperationsToNullScript() throws Throwable { |
| Configuration conf = new Configuration(); |
| ScriptBasedMapping scriptMapping = new ScriptBasedMapping(conf); |
| assertTrue("Did not find " + ScriptBasedMapping.NO_SCRIPT |
| + " in " + scriptMapping, |
| scriptMapping.toString().contains(ScriptBasedMapping.NO_SCRIPT)); |
| CachedDNSToSwitchMapping mapping = |
| new CachedDNSToSwitchMapping(scriptMapping); |
| assertTrue("Did not find " + ScriptBasedMapping.NO_SCRIPT |
| + " in " + mapping, |
| mapping.toString().contains(ScriptBasedMapping.NO_SCRIPT)); |
| } |
| |
| @Test |
| public void testNullMapping() { |
| assertFalse(AbstractDNSToSwitchMapping.isMappingSingleSwitch(null)); |
| } |
| |
| /** |
| * This class does not extend the abstract switch mapping, and verifies that |
| * the switch mapping logic assumes that this is multi switch |
| */ |
| |
| private static class StandaloneSwitchMapping implements DNSToSwitchMapping { |
| @Override |
| public List<String> resolve(List<String> names) { |
| return names; |
| } |
| |
| @Override |
| public void reloadCachedMappings() { |
| } |
| |
| @Override |
| public void reloadCachedMappings(List<String> names) { |
| } |
| } |
| } |