| /** |
| * 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.security; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.util.NativeCodeLoader; |
| |
| public class JniBasedUnixGroupsMappingWithFallback implements |
| GroupMappingServiceProvider { |
| |
| private static final Log LOG = LogFactory |
| .getLog(JniBasedUnixGroupsMappingWithFallback.class); |
| |
| private GroupMappingServiceProvider impl; |
| |
| public JniBasedUnixGroupsMappingWithFallback() { |
| if (NativeCodeLoader.isNativeCodeLoaded()) { |
| this.impl = new JniBasedUnixGroupsMapping(); |
| } else { |
| LOG.debug("Falling back to shell based"); |
| this.impl = new ShellBasedUnixGroupsMapping(); |
| } |
| if (LOG.isDebugEnabled()){ |
| LOG.debug("Group mapping impl=" + impl.getClass().getName()); |
| } |
| } |
| |
| @Override |
| public List<String> getGroups(String user) throws IOException { |
| return impl.getGroups(user); |
| } |
| |
| @Override |
| public void cacheGroupsRefresh() throws IOException { |
| impl.cacheGroupsRefresh(); |
| } |
| |
| @Override |
| public void cacheGroupsAdd(List<String> groups) throws IOException { |
| impl.cacheGroupsAdd(groups); |
| } |
| |
| } |