org.springframework.security.authorization.AuthorizationManagers Maven / Gradle / Ivy
/*
* Copyright 2002-2022 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.security.authorization;
import java.util.ArrayList;
import java.util.List;
/**
* A factory class to create an {@link AuthorizationManager} instances.
*
* @author Evgeniy Cheban
* @since 5.8
*/
public final class AuthorizationManagers {
/**
* Creates an {@link AuthorizationManager} that grants access if at least one
* {@link AuthorizationManager} granted or abstained, if managers are
* empty then denied decision is returned.
* @param the type of object that is being authorized
* @param managers the {@link AuthorizationManager}s to use
* @return the {@link AuthorizationManager} to use
*/
@SafeVarargs
public static AuthorizationManager anyOf(AuthorizationManager... managers) {
return (authentication, object) -> {
List decisions = new ArrayList<>();
for (AuthorizationManager manager : managers) {
AuthorizationDecision decision = manager.check(authentication, object);
if (decision == null) {
continue;
}
if (decision.isGranted()) {
return decision;
}
decisions.add(decision);
}
if (decisions.isEmpty()) {
return new AuthorizationDecision(false);
}
return new CompositeAuthorizationDecision(false, decisions);
};
}
/**
* Creates an {@link AuthorizationManager} that grants access if all
* {@link AuthorizationManager}s granted or abstained, if managers are
* empty then granted decision is returned.
* @param the type of object that is being authorized
* @param managers the {@link AuthorizationManager}s to use
* @return the {@link AuthorizationManager} to use
*/
@SafeVarargs
public static AuthorizationManager allOf(AuthorizationManager... managers) {
return (authentication, object) -> {
List decisions = new ArrayList<>();
for (AuthorizationManager manager : managers) {
AuthorizationDecision decision = manager.check(authentication, object);
if (decision == null) {
continue;
}
if (!decision.isGranted()) {
return decision;
}
decisions.add(decision);
}
if (decisions.isEmpty()) {
return new AuthorizationDecision(true);
}
return new CompositeAuthorizationDecision(true, decisions);
};
}
private AuthorizationManagers() {
}
private static final class CompositeAuthorizationDecision extends AuthorizationDecision {
private final List decisions;
private CompositeAuthorizationDecision(boolean granted, List decisions) {
super(granted);
this.decisions = decisions;
}
@Override
public String toString() {
return "CompositeAuthorizationDecision [decisions=" + this.decisions + ']';
}
}
}