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ActiveMQ example source code file (SecurityContext.java)

This example ActiveMQ source code file (SecurityContext.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

activemqdestination, activemqdestination, broker_security_context, concurrenthashmap, concurrenthashmap, hashset, iterator, object, override, securitycontext, securitycontext, set, string, string, threading, threads, util

The ActiveMQ SecurityContext.java source code

/**
 * 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.activemq.security;

import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.activemq.command.ActiveMQDestination;

/**
 * Used to cache up authorizations so that subsequent requests are faster.
 * 
 * 
 */
public abstract class SecurityContext {

    public static final SecurityContext BROKER_SECURITY_CONTEXT = new SecurityContext("ActiveMQBroker") {
        @Override
        public boolean isBrokerContext() {
            return true;
        }

        @SuppressWarnings("unchecked")
        public Set<?> getPrincipals() {
            return Collections.EMPTY_SET;
        }
    };

    final String userName;

    final ConcurrentHashMap<ActiveMQDestination, ActiveMQDestination> authorizedReadDests = new ConcurrentHashMap();
    final ConcurrentHashMap<ActiveMQDestination, ActiveMQDestination> authorizedWriteDests = new ConcurrentHashMap();

    public SecurityContext(String userName) {
        this.userName = userName;
    }

    public boolean isInOneOf(Set<?> allowedPrincipals) {
    	Iterator allowedIter = allowedPrincipals.iterator();
    	HashSet<?> userPrincipals = new HashSet(getPrincipals());
    	while (allowedIter.hasNext()) {
    		Iterator userIter = userPrincipals.iterator();
    		Object allowedPrincipal = allowedIter.next(); 
    		while (userIter.hasNext()) {
    			if (allowedPrincipal.equals(userIter.next()))
    				return true;
    		}
    	}
    	return false;
    }

    public abstract Set<?> getPrincipals();

    public String getUserName() {
        return userName;
    }

    public ConcurrentHashMap<ActiveMQDestination, ActiveMQDestination> getAuthorizedReadDests() {
        return authorizedReadDests;
    }

    public ConcurrentHashMap<ActiveMQDestination, ActiveMQDestination> getAuthorizedWriteDests() {
        return authorizedWriteDests;
    }

    public boolean isBrokerContext() {
        return false;
    }
}

Other ActiveMQ examples (source code examples)

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