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ActiveMQ example source code file (AuthorizationEntry.java)

This example ActiveMQ source code file (AuthorizationEntry.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

class, class, constructor, destinationmapentry, exception, exception, method, nosuchmethodexception, object, reflection, set, set, string, string, stringtokenizer, util

The ActiveMQ AuthorizationEntry.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.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;

import org.apache.activemq.filter.DestinationMapEntry;

/**
 * Represents an entry in a {@link DefaultAuthorizationMap} for assigning
 * different operations (read, write, admin) of user roles to a specific
 * destination or a hierarchical wildcard area of destinations.
 * 
 * @org.apache.xbean.XBean
 * 
 */
public class AuthorizationEntry extends DestinationMapEntry {

    private Set<Object> readACLs = emptySet();
    private Set<Object> writeACLs = emptySet();
    private Set<Object> adminACLs = emptySet();

    private String adminRoles;
    private String readRoles;
    private String writeRoles;

    private String groupClass = "org.apache.activemq.jaas.GroupPrincipal";

    public String getGroupClass() {
        return groupClass;
    }

    @SuppressWarnings("unchecked")
    private Set<Object> emptySet() {
        return Collections.EMPTY_SET;
    }

    public void setGroupClass(String groupClass) {
        this.groupClass = groupClass;
    }

    public Set<Object> getAdminACLs() {
        return adminACLs;
    }

    public void setAdminACLs(Set<Object> adminACLs) {
        this.adminACLs = adminACLs;
    }

    public Set<Object> getReadACLs() {
        return readACLs;
    }

    public void setReadACLs(Set<Object> readACLs) {
        this.readACLs = readACLs;
    }

    public Set<Object> getWriteACLs() {
        return writeACLs;
    }

    public void setWriteACLs(Set<Object> writeACLs) {
        this.writeACLs = writeACLs;
    }

    // helper methods for easier configuration in Spring
    // ACLs are already set in the afterPropertiesSet method to ensure that
    // groupClass is set first before
    // calling parceACLs() on any of the roles. We still need to add the call to
    // parceACLs inside the helper
    // methods for instances where we configure security programatically without
    // using xbean
    // -------------------------------------------------------------------------
    public void setAdmin(String roles) throws Exception {
        adminRoles = roles;
        setAdminACLs(parseACLs(adminRoles));
    }

    public void setRead(String roles) throws Exception {
        readRoles = roles;
        setReadACLs(parseACLs(readRoles));
    }

    public void setWrite(String roles) throws Exception {
        writeRoles = roles;
        setWriteACLs(parseACLs(writeRoles));
    }

    protected Set<Object> parseACLs(String roles) throws Exception {
        Set<Object> answer = new HashSet();
        StringTokenizer iter = new StringTokenizer(roles, ",");
        while (iter.hasMoreTokens()) {
            String name = iter.nextToken().trim();
            Class[] paramClass = new Class[1];
            paramClass[0] = String.class;

            Object[] param = new Object[1];
            param[0] = name;

            try {
                Class cls = Class.forName(groupClass);

                Constructor[] constructors = cls.getConstructors();
                int i;
                for (i = 0; i < constructors.length; i++) {
                    Class[] paramTypes = constructors[i].getParameterTypes();
                    if (paramTypes.length != 0 && paramTypes[0].equals(paramClass[0])) {
                        break;
                    }
                }
                if (i < constructors.length) {
                    Object instance = constructors[i].newInstance(param);
                    answer.add(instance);
                } else {
                    Object instance = cls.newInstance();
                    Method[] methods = cls.getMethods();
                    i = 0;
                    for (i = 0; i < methods.length; i++) {
                        Class[] paramTypes = methods[i].getParameterTypes();
                        if (paramTypes.length != 0 && methods[i].getName().equals("setName") && paramTypes[0].equals(paramClass[0])) {
                            break;
                        }
                    }

                    if (i < methods.length) {
                        methods[i].invoke(instance, param);
                        answer.add(instance);
                    } else {
                        throw new NoSuchMethodException();
                    }
                }
            } catch (Exception e) {
                throw e;
            }
        }
        return answer;
    }

    public void afterPropertiesSet() throws Exception {
        super.afterPropertiesSet();

        if (adminRoles != null) {
            setAdminACLs(parseACLs(adminRoles));
        }

        if (writeRoles != null) {
            setWriteACLs(parseACLs(writeRoles));
        }

        if (readRoles != null) {
            setReadACLs(parseACLs(readRoles));
        }

    }
}

Other ActiveMQ examples (source code examples)

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