UserManagerBeanDefinitionParser.java

/*
 * 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.smscserver.config.spring;

import org.apache.smscserver.usermanager.ClearTextPasswordEncryptor;
import org.apache.smscserver.usermanager.DbUserManagerFactory;
import org.apache.smscserver.usermanager.Md5PasswordEncryptor;
import org.apache.smscserver.usermanager.PropertiesUserManagerFactory;
import org.apache.smscserver.usermanager.SaltedPasswordEncryptor;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.StringUtils;
import org.w3c.dom.Element;

/**
 * Parses the SmscServer "file-user-manager" or "db-user-manager" elements into a Spring bean graph
 * 
 * @author hceylan
 */
public class UserManagerBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {

    @Override
    protected void doParse(final Element element, final ParserContext parserContext, final BeanDefinitionBuilder builder) {

        Class<?> factoryClass;
        if (element.getLocalName().equals("file-user-manager")) {
            factoryClass = PropertiesUserManagerFactory.class;
        } else {
            factoryClass = DbUserManagerFactory.class;
        }

        BeanDefinitionBuilder factoryBuilder = BeanDefinitionBuilder.genericBeanDefinition(factoryClass);

        // common for both user managers
        if (StringUtils.hasText(element.getAttribute("encrypt-passwords"))) {
            String encryptionStrategy = element.getAttribute("encrypt-passwords");

            if (encryptionStrategy.equals("true") || encryptionStrategy.equals("md5")) {
                factoryBuilder.addPropertyValue("passwordEncryptor", new Md5PasswordEncryptor());
            } else if (encryptionStrategy.equals("salted")) {
                factoryBuilder.addPropertyValue("passwordEncryptor", new SaltedPasswordEncryptor());
            } else {
                factoryBuilder.addPropertyValue("passwordEncryptor", new ClearTextPasswordEncryptor());
            }
        }

        if (factoryClass == PropertiesUserManagerFactory.class) {
            if (StringUtils.hasText(element.getAttribute("file"))) {
                factoryBuilder.addPropertyValue("file", element.getAttribute("file"));
            }
            if (StringUtils.hasText(element.getAttribute("url"))) {
                factoryBuilder.addPropertyValue("url", element.getAttribute("url"));
            }
        } else {
            Element dsElm = SpringUtil
                    .getChildElement(element, SmscServerNamespaceHandler.SMSCSERVER_NS, "data-source");

            // schema ensure we get the right type of element
            Element springElm = SpringUtil.getChildElement(dsElm, null, null);
            Object o;
            if ("bean".equals(springElm.getLocalName())) {
                o = parserContext.getDelegate().parseBeanDefinitionElement(springElm, builder.getBeanDefinition());
            } else {
                // ref
                o = parserContext.getDelegate().parsePropertySubElement(springElm, builder.getBeanDefinition());

            }
            factoryBuilder.addPropertyValue("dataSource", o);

            factoryBuilder.addPropertyValue("sqlUserInsert", this.getSql(element, "insert-user"));
            factoryBuilder.addPropertyValue("sqlUserUpdate", this.getSql(element, "update-user"));
            factoryBuilder.addPropertyValue("sqlUserDelete", this.getSql(element, "delete-user"));
            factoryBuilder.addPropertyValue("sqlUserSelect", this.getSql(element, "select-user"));
            factoryBuilder.addPropertyValue("sqlUserSelectAll", this.getSql(element, "select-all-users"));
            factoryBuilder.addPropertyValue("sqlUserAdmin", this.getSql(element, "is-admin"));
            factoryBuilder.addPropertyValue("sqlUserAuthenticate", this.getSql(element, "authenticate"));
        }

        BeanDefinition factoryDefinition = factoryBuilder.getBeanDefinition();
        String factoryId = parserContext.getReaderContext().generateBeanName(factoryDefinition);

        BeanDefinitionHolder factoryHolder = new BeanDefinitionHolder(factoryDefinition, factoryId);
        this.registerBeanDefinition(factoryHolder, parserContext.getRegistry());

        // set the factory on the listener bean
        builder.getRawBeanDefinition().setFactoryBeanName(factoryId);
        builder.getRawBeanDefinition().setFactoryMethodName("createUserManager");

    }

    @Override
    protected Class<?> getBeanClass(final Element element) {
        return null;
    }

    private String getSql(final Element element, final String elmName) {
        return SpringUtil.getChildElementText(element, SmscServerNamespaceHandler.SMSCSERVER_NS, elmName);
    }
}