SnsInboundChannelAdapterParser.java

/*
 * Copyright 2015-2016 the original author or authors.
 *
 * 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 org.springframework.integration.aws.config.xml;

import org.w3c.dom.Element;

import org.springframework.beans.factory.BeanDefinitionStoreException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.integration.aws.inbound.SnsInboundChannelAdapter;
import org.springframework.integration.config.xml.IntegrationNamespaceUtils;
import org.springframework.util.StringUtils;

/**
 * The parser for the {@code <int-aws:sns-inbound-channel-adapter>}.
 *
 * @author Artem Bilan
 */
public class SnsInboundChannelAdapterParser extends AbstractSingleBeanDefinitionParser {

	@Override
	protected Class<?> getBeanClass(Element element) {
		return SnsInboundChannelAdapter.class;
	}

	@Override
	protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext)
			throws BeanDefinitionStoreException {
		String id = super.resolveId(element, definition, parserContext);

		if (!element.hasAttribute("channel")) {
			// the created channel will get the 'id', so the adapter's bean name includes a suffix
			id = id + ".adapter";
		}
		if (!StringUtils.hasText(id)) {
			id = BeanDefinitionReaderUtils.generateBeanName(definition, parserContext.getRegistry());
		}

		return id;
	}

	@Override
	protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
		builder.addConstructorArgReference(element.getAttribute(AwsParserUtils.SNS_REF))
				.addConstructorArgValue(element.getAttribute("path"));
		String channelName = element.getAttribute("channel");
		if (!StringUtils.hasText(channelName)) {
			channelName = IntegrationNamespaceUtils.createDirectChannel(element, parserContext);
		}
		builder.addPropertyReference("requestChannel", channelName);
		IntegrationNamespaceUtils.setReferenceIfAttributeDefined(builder, element, "error-channel");
		IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, element, "handle-notification-status");
		IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, element, "send-timeout", "requestTimeout");
		IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, element, IntegrationNamespaceUtils.AUTO_STARTUP);
		IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, element, IntegrationNamespaceUtils.PHASE);
		BeanDefinition payloadExpressionDef =
				IntegrationNamespaceUtils.createExpressionDefIfAttributeDefined("payload-expression", element);
		if (payloadExpressionDef != null) {
			builder.addPropertyValue("payloadExpression", payloadExpressionDef);
		}
	}

}