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org.springframework.integration.config.annotation.RouterAnnotationPostProcessor Maven / Gradle / Ivy
/*
* Copyright 2002-2019 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
*
* https://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.config.annotation;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.core.annotation.AnnotatedElementUtils;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.integration.annotation.Router;
import org.springframework.integration.router.AbstractMessageRouter;
import org.springframework.integration.router.MethodInvokingRouter;
import org.springframework.integration.util.MessagingAnnotationUtils;
import org.springframework.messaging.MessageHandler;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
/**
* Post-processor for Methods annotated with {@link Router @Router}.
*
* @author Mark Fisher
* @author Gary Russell
* @author Artem Bilan
*/
public class RouterAnnotationPostProcessor extends AbstractMethodAnnotationPostProcessor {
public RouterAnnotationPostProcessor(ConfigurableListableBeanFactory beanFactory) {
super(beanFactory);
this.messageHandlerAttributes.addAll(Arrays.asList("defaultOutputChannel", "applySequence",
"ignoreSendFailures", "resolutionRequired", "channelMappings", "prefix", "suffix"));
}
@Override
protected MessageHandler createHandler(Object bean, Method method, List annotations) {
AbstractMessageRouter router;
if (AnnotatedElementUtils.isAnnotated(method, Bean.class.getName())) {
Object target = resolveTargetBeanFromMethodWithBeanAnnotation(method);
router = extractTypeIfPossible(target, AbstractMessageRouter.class);
if (router == null) {
if (target instanceof MessageHandler) {
Assert.isTrue(routerAttributesProvided(annotations),
"'defaultOutputChannel', 'applySequence', 'ignoreSendFailures', 'resolutionRequired', " +
"'channelMappings', 'prefix' and 'suffix' " +
"can be applied to 'AbstractMessageRouter' implementations, but target handler is: " +
target.getClass());
return (MessageHandler) target;
}
else {
router = new MethodInvokingRouter(target);
}
}
else {
checkMessageHandlerAttributes(resolveTargetBeanName(method), annotations);
return router;
}
}
else {
router = new MethodInvokingRouter(bean, method);
}
String defaultOutputChannelName = MessagingAnnotationUtils.resolveAttribute(annotations,
"defaultOutputChannel", String.class);
if (StringUtils.hasText(defaultOutputChannelName)) {
router.setDefaultOutputChannelName(defaultOutputChannelName);
}
String applySequence = MessagingAnnotationUtils.resolveAttribute(annotations, "applySequence", String.class);
if (StringUtils.hasText(applySequence)) {
router.setApplySequence(resolveAttributeToBoolean(applySequence));
}
String ignoreSendFailures = MessagingAnnotationUtils.resolveAttribute(annotations, "ignoreSendFailures",
String.class);
if (StringUtils.hasText(ignoreSendFailures)) {
router.setIgnoreSendFailures(resolveAttributeToBoolean(ignoreSendFailures));
}
routerAttributes(annotations, router);
return router;
}
private void routerAttributes(List annotations, AbstractMessageRouter router) {
if (routerAttributesProvided(annotations)) {
MethodInvokingRouter methodInvokingRouter = (MethodInvokingRouter) router;
String resolutionRequired = MessagingAnnotationUtils.resolveAttribute(annotations, "resolutionRequired",
String.class);
if (StringUtils.hasText(resolutionRequired)) {
methodInvokingRouter.setResolutionRequired(resolveAttributeToBoolean(resolutionRequired));
}
String prefix = MessagingAnnotationUtils.resolveAttribute(annotations, "prefix", String.class);
if (StringUtils.hasText(prefix)) {
methodInvokingRouter.setPrefix(this.beanFactory.resolveEmbeddedValue(prefix));
}
String suffix = MessagingAnnotationUtils.resolveAttribute(annotations, "suffix", String.class);
if (StringUtils.hasText(suffix)) {
methodInvokingRouter.setSuffix(this.beanFactory.resolveEmbeddedValue(suffix));
}
String[] channelMappings = MessagingAnnotationUtils.resolveAttribute(annotations, "channelMappings",
String[].class);
if (!ObjectUtils.isEmpty(channelMappings)) {
StringBuilder mappings = new StringBuilder();
for (String channelMapping : channelMappings) {
mappings.append(channelMapping).append("\n");
}
Properties properties = (Properties) this.conversionService.convert(mappings.toString(),
TypeDescriptor.valueOf(String.class), TypeDescriptor.valueOf(Properties.class));
methodInvokingRouter.replaceChannelMappings(properties);
}
}
}
private boolean routerAttributesProvided(List annotations) {
String defaultOutputChannel = MessagingAnnotationUtils.resolveAttribute(annotations, "defaultOutputChannel",
String.class);
String[] channelMappings = MessagingAnnotationUtils.resolveAttribute(annotations, "channelMappings",
String[].class);
String prefix = MessagingAnnotationUtils.resolveAttribute(annotations, "prefix", String.class);
String suffix = MessagingAnnotationUtils.resolveAttribute(annotations, "suffix", String.class);
String resolutionRequired = MessagingAnnotationUtils.resolveAttribute(annotations, "resolutionRequired",
String.class);
String applySequence = MessagingAnnotationUtils.resolveAttribute(annotations, "applySequence", String.class);
String ignoreSendFailures = MessagingAnnotationUtils.resolveAttribute(annotations, "ignoreSendFailures",
String.class);
return StringUtils.hasText(defaultOutputChannel) || !ObjectUtils.isEmpty(channelMappings) // NOSONAR complexity
|| StringUtils.hasText(prefix) || StringUtils.hasText(suffix) || StringUtils.hasText(resolutionRequired)
|| StringUtils.hasText(applySequence) || StringUtils.hasText(ignoreSendFailures);
}
}
