org.apache.jackrabbit.oak.security.user.InheritedMembersIterator Maven / Gradle / Ivy
/*
* 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.jackrabbit.oak.security.user;
import org.apache.jackrabbit.api.security.user.Authorizable;
import org.apache.jackrabbit.api.security.user.Group;
import org.apache.jackrabbit.commons.iterator.AbstractLazyIterator;
import org.apache.jackrabbit.oak.spi.security.user.DynamicMembershipProvider;
import org.jetbrains.annotations.NotNull;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.jcr.RepositoryException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
/**
* Wrapper around a members iterator that will resolve dynamic members of the contained groups.
*/
class InheritedMembersIterator extends AbstractLazyIterator {
private static final Logger log = LoggerFactory.getLogger(InheritedMembersIterator.class);
private final Iterator members;
private final DynamicMembershipProvider dynamicMembershipProvider;
private final List groups = new ArrayList<>();
private Iterator dynamicMembers;
InheritedMembersIterator(@NotNull Iterator members, @NotNull DynamicMembershipProvider dynamicMembershipProvider) {
this.members = members;
this.dynamicMembershipProvider = dynamicMembershipProvider;
}
@Override
protected Authorizable getNext() {
if (members.hasNext()) {
Authorizable member = members.next();
if (member.isGroup()) {
rememberGroup((Group) member);
}
return member;
}
if (dynamicMembers == null || !dynamicMembers.hasNext()) {
dynamicMembers = getNextDynamicMembersIterator();
}
if (dynamicMembers.hasNext()) {
return dynamicMembers.next();
}
// all dynamic members have been processed
return null;
}
private void rememberGroup(@NotNull Group group) {
groups.add(group);
}
@NotNull
private Iterator getNextDynamicMembersIterator() {
while (!groups.isEmpty()) {
Group group = groups.remove(0);
try {
Iterator it = dynamicMembershipProvider.getMembers(group, false);
if (it.hasNext()) {
return it;
}
} catch (RepositoryException e) {
log.error("Failed to retrieve dynamic members of group '{}'", Utils.getIdOrNull(group), e);
}
}
return Collections.emptyIterator();
}
}