de.itsvs.cwtrpc.controller.config.BaseServiceConfigParser.java Source code

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Here is the source code for de.itsvs.cwtrpc.controller.config.BaseServiceConfigParser.java

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/*
 *  Copyright 2011 IT Services VS GmbH
 *
 *  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
 *
 *      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 de.itsvs.cwtrpc.controller.config;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.parsing.BeanComponentDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.StringUtils;
import org.w3c.dom.Element;

import de.itsvs.cwtrpc.controller.token.DefaultXsrfTokenService;

/**
 * @author Volker Schmidt
 * @since 0.9
 */
public class BaseServiceConfigParser extends AbstractSingleBeanDefinitionParser {
    private final Log log = LogFactory.getLog(BaseServiceConfigParser.class);

    public void update(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
        update(element, parserContext, builder, null);
    }

    public void update(Element element, ParserContext parserContext, BeanDefinitionBuilder builder,
            String defaultRpcTokenValidatorName) {
        final Object responseCompressionEnabled;
        final Object rpcTokenProtectionEnabled;
        final String rpcTokenValidatorName;

        if (element.hasAttribute(XmlNames.RESPONSE_COMPRESSION_ENABLED_ATTR)) {
            responseCompressionEnabled = element.getAttribute(XmlNames.RESPONSE_COMPRESSION_ENABLED_ATTR);
            builder.addPropertyValue("responseCompressionEnabled", responseCompressionEnabled);
        }
        if (element.hasAttribute(XmlNames.RPC_TOKEN_PROTECTION_ENABLED_ATTR)) {
            rpcTokenProtectionEnabled = element.getAttribute(XmlNames.RPC_TOKEN_PROTECTION_ENABLED_ATTR);
            builder.addPropertyValue("rpcTokenProtectionEnabled", rpcTokenProtectionEnabled);

        }

        if (element.hasAttribute(XmlNames.RPC_TOKEN_VALIDATOR_REF_ATTR)) {
            rpcTokenValidatorName = element.getAttribute(XmlNames.RPC_TOKEN_VALIDATOR_REF_ATTR);
            if (!StringUtils.hasText(rpcTokenValidatorName)) {
                parserContext.getReaderContext().error("RPC token validator reference must not be empty",
                        parserContext.extractSource(element));
            }
            builder.addPropertyValue("rpcTokenValidatorName", rpcTokenValidatorName);
        } else {
            rpcTokenValidatorName = defaultRpcTokenValidatorName;
        }

        /*
         * Register default RPC token validator only if default configuration is
         * available (not inherited configuration values from other levels).
         */
        if ((defaultRpcTokenValidatorName != null) && defaultRpcTokenValidatorName.equals(rpcTokenValidatorName)) {
            createDefaultRpcTokenValidatorBeanDefinition(element, parserContext, rpcTokenValidatorName);
        }
    }

    protected void createDefaultRpcTokenValidatorBeanDefinition(Element element, ParserContext parserContext,
            String rpcTokenValidatorName) {
        if (!parserContext.getRegistry().containsBeanDefinition(rpcTokenValidatorName)) {
            final RootBeanDefinition bd;

            if (log.isInfoEnabled()) {
                log.info("Registering default RPC token validator with name '" + rpcTokenValidatorName + "'");
            }
            bd = new RootBeanDefinition(DefaultXsrfTokenService.class);
            bd.setSource(parserContext.extractSource(element));
            bd.setLazyInit(true);
            parserContext.registerBeanComponent(new BeanComponentDefinition(bd, rpcTokenValidatorName));
        }
    }
}