| /** |
| * 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.hdfs.web.resources; |
| |
| import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys |
| .DFS_WEBHDFS_ACL_PERMISSION_PATTERN_DEFAULT; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.regex.Pattern; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import org.apache.hadoop.fs.permission.AclEntry; |
| |
| /** AclPermission parameter. */ |
| public class AclPermissionParam extends StringParam { |
| /** Parameter name. */ |
| public static final String NAME = "aclspec"; |
| /** Default parameter value. */ |
| public static final String DEFAULT = ""; |
| |
| private static Domain domain = new Domain(NAME, |
| Pattern.compile(DFS_WEBHDFS_ACL_PERMISSION_PATTERN_DEFAULT)); |
| |
| /** |
| * Constructor. |
| * |
| * @param str a string representation of the parameter value. |
| */ |
| public AclPermissionParam(final String str) { |
| super(domain, str == null || str.equals(DEFAULT) ? null : str); |
| } |
| |
| public AclPermissionParam(List<AclEntry> acl) { |
| super(domain, parseAclSpec(acl).equals(DEFAULT) ? null : parseAclSpec(acl)); |
| } |
| |
| @VisibleForTesting |
| public static Domain getAclPermissionPattern() { |
| return domain; |
| } |
| |
| @VisibleForTesting |
| public static void setAclPermissionPattern(Domain dm) { |
| domain = dm; |
| } |
| |
| public static void setAclPermissionPattern(String pattern) { |
| domain = new Domain(NAME, Pattern.compile(pattern)); |
| } |
| |
| @Override |
| public String getName() { |
| return NAME; |
| } |
| |
| public List<AclEntry> getAclPermission(boolean includePermission) { |
| final String v = getValue(); |
| return (v != null ? AclEntry.parseAclSpec(v, includePermission) : AclEntry |
| .parseAclSpec(DEFAULT, includePermission)); |
| } |
| |
| /** |
| * @return parse {@code aclEntry} and return aclspec |
| */ |
| private static String parseAclSpec(List<AclEntry> aclEntries) { |
| if (aclEntries == null) { |
| return null; |
| } |
| if (aclEntries.isEmpty()) { |
| return ""; |
| } |
| if (aclEntries.size() == 1) { |
| AclEntry entry = aclEntries.get(0); |
| return entry == null ? "" : entry.toStringStable(); |
| } |
| StringBuilder sb = new StringBuilder(); |
| Iterator<AclEntry> iter = aclEntries.iterator(); |
| sb.append(iter.next().toStringStable()); |
| while (iter.hasNext()) { |
| AclEntry entry = iter.next(); |
| sb.append(',').append(entry == null ? "" : entry.toStringStable()); |
| } |
| return sb.toString(); |
| } |
| } |