com.github.netty.protocol.mqtt.security.Authorization Maven / Gradle / Ivy
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/*
* Copyright (c) 2012-2018 The original author or authors
* ------------------------------------------------------
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* The Apache License v2.0 is available at
* http://www.opensource.org/licenses/apache2.0.php
*
* You may elect to redistribute this code under either of these licenses.
*/
package com.github.netty.protocol.mqtt.security;
import com.github.netty.protocol.mqtt.subscriptions.Topic;
import static com.github.netty.protocol.mqtt.security.Authorization.Permission.READWRITE;
/**
* Carries the read/write authorization to topics for the users.
*/
public class Authorization {
protected final Topic topic;
protected final Permission permission;
Authorization(Topic topic) {
this(topic, Permission.READWRITE);
}
Authorization(Topic topic, Permission permission) {
this.topic = topic;
this.permission = permission;
}
public boolean grant(Permission desiredPermission) {
return permission == desiredPermission || permission == READWRITE;
}
@Override
public boolean equals(Object o) {
if (this == o)
return true;
if (o == null || getClass() != o.getClass())
return false;
Authorization that = (Authorization) o;
if (permission != that.permission)
return false;
return topic.equals(that.topic);
}
@Override
public int hashCode() {
int result = topic.hashCode();
result = 31 * result + permission.hashCode();
return result;
}
/**
* Access rights
*/
enum Permission {
READ, WRITE, READWRITE
}
}