INT-3041 Add Namespace Support For Retry Advice
JIRA: https://jira.spring.io/browse/INT-3041 Add namespace support to simplify configuration of a `RequestHandlerRetryAdvice. INT-3041 Polishing; PR Comments * Allow a retry-advice element within the request-handler-advice-chain * Clean up schema (should not have allowed `synchronization-factory` on the request-handler-advice-chain. INT-3041 Polishing; PR Comment
This commit is contained in:
committed by
Artem Bilan
parent
c7265d8e4a
commit
1c9bcaccee
@@ -388,7 +388,7 @@
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</xsd:documentation>
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</xsd:annotation>
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<xsd:sequence>
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<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
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<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
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</xsd:sequence>
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<xsd:attribute name="exchange-name" type="xsd:string">
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<xsd:annotation>
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@@ -1,5 +1,5 @@
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/*
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* Copyright 2002-2013 the original author or authors.
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* Copyright 2002-2014 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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@@ -28,6 +28,7 @@ package org.springframework.integration.config.xml;
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*/
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public class IntegrationNamespaceHandler extends AbstractIntegrationNamespaceHandler {
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@Override
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public void init() {
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registerBeanDefinitionParser("channel", new PointToPointChannelParser());
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registerBeanDefinitionParser("publish-subscribe-channel", new PublishSubscribeChannelParser());
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@@ -77,6 +78,9 @@ public class IntegrationNamespaceHandler extends AbstractIntegrationNamespaceHan
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registerBeanDefinitionParser("transaction-synchronization-factory", new TransactionSynchronizationFactoryParser());
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registerBeanDefinitionParser("spel-function", new SpelFunctionParser());
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registerBeanDefinitionParser("spel-property-accessors", new SpelPropertyAccessorsParser());
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RetryAdviceParser retryParser = new RetryAdviceParser();
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registerBeanDefinitionParser("handler-retry-advice", retryParser);
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registerBeanDefinitionParser("retry-advice", retryParser);
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}
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}
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@@ -0,0 +1,84 @@
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/*
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* Copyright 2014 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.integration.config.xml;
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import org.w3c.dom.Element;
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import org.springframework.beans.factory.support.AbstractBeanDefinition;
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import org.springframework.beans.factory.support.BeanDefinitionBuilder;
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import org.springframework.beans.factory.xml.AbstractBeanDefinitionParser;
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import org.springframework.beans.factory.xml.ParserContext;
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import org.springframework.integration.handler.advice.ErrorMessageSendingRecoverer;
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import org.springframework.integration.handler.advice.RequestHandlerRetryAdvice;
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import org.springframework.retry.backoff.ExponentialBackOffPolicy;
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import org.springframework.retry.backoff.FixedBackOffPolicy;
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import org.springframework.retry.policy.SimpleRetryPolicy;
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import org.springframework.retry.support.RetryTemplate;
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import org.springframework.util.StringUtils;
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import org.springframework.util.xml.DomUtils;
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/**
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* @author Gary Russell
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* @since 4.0
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*
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*/
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public class RetryAdviceParser extends AbstractBeanDefinitionParser {
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@Override
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protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {
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BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(RequestHandlerRetryAdvice.class);
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BeanDefinitionBuilder retryTemplateBuilder = BeanDefinitionBuilder.genericBeanDefinition(RetryTemplate.class);
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boolean customTemplate = false;
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Element backOffPolicyEle = DomUtils.getChildElementByTagName(element, "fixed-back-off");
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BeanDefinitionBuilder backOffBuilder = null;
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if (backOffPolicyEle != null) {
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backOffBuilder = BeanDefinitionBuilder.genericBeanDefinition(FixedBackOffPolicy.class);
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IntegrationNamespaceUtils.setValueIfAttributeDefined(backOffBuilder, backOffPolicyEle, "interval", "backOffPeriod");
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}
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else {
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backOffPolicyEle = DomUtils.getChildElementByTagName(element, "exponential-back-off");
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if (backOffPolicyEle != null) {
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backOffBuilder = BeanDefinitionBuilder.genericBeanDefinition(ExponentialBackOffPolicy.class);
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IntegrationNamespaceUtils.setValueIfAttributeDefined(backOffBuilder, backOffPolicyEle, "initial", "initialInterval");
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IntegrationNamespaceUtils.setValueIfAttributeDefined(backOffBuilder, backOffPolicyEle, "multiplier");
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IntegrationNamespaceUtils.setValueIfAttributeDefined(backOffBuilder, backOffPolicyEle, "maximum", "maxInterval");
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}
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}
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if (backOffBuilder != null) {
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retryTemplateBuilder.addPropertyValue("backOffPolicy", backOffBuilder.getBeanDefinition());
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customTemplate = true;
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}
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String maxAttemptsAttr = element.getAttribute("max-attempts");
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if (StringUtils.hasText(maxAttemptsAttr)) {
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BeanDefinitionBuilder retryPolicyBuilder = BeanDefinitionBuilder.genericBeanDefinition(SimpleRetryPolicy.class);
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IntegrationNamespaceUtils.setValueIfAttributeDefined(retryPolicyBuilder, element, "max-attempts");
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retryTemplateBuilder.addPropertyValue("retryPolicy", retryPolicyBuilder.getBeanDefinition());
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customTemplate = true;
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}
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if (customTemplate) {
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builder.addPropertyValue("retryTemplate", retryTemplateBuilder.getBeanDefinition());
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}
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String recoveryChannelAttr = element.getAttribute("recovery-channel");
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if (StringUtils.hasText(recoveryChannelAttr)) {
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BeanDefinitionBuilder emsrBuilder = BeanDefinitionBuilder.genericBeanDefinition(ErrorMessageSendingRecoverer.class);
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emsrBuilder.addConstructorArgReference(recoveryChannelAttr);
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IntegrationNamespaceUtils.setValueIfAttributeDefined(emsrBuilder, element, "send-timeout");
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builder.addPropertyValue("recoveryCallback", emsrBuilder.getBeanDefinition());
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}
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return builder.getBeanDefinition();
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}
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}
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@@ -1321,7 +1321,7 @@
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</xsd:complexContent>
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</xsd:complexType>
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</xsd:element>
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<xsd:element name="request-handler-advice-chain" type="adviceChainType" minOccurs="0" maxOccurs="1" />
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<xsd:element name="request-handler-advice-chain" type="handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
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</xsd:sequence>
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<xsd:attribute name="request-channel" type="xsd:string" use="optional">
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<xsd:annotation>
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@@ -2599,7 +2599,7 @@
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<xsd:element name="request-handler-advice-chain" minOccurs="0" maxOccurs="1">
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<xsd:complexType>
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<xsd:complexContent>
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<xsd:extension base="adviceChainType">
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<xsd:extension base="handlerAdviceChainType">
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<xsd:attribute name="discard-within-advice" type="xsd:string" default="true">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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@@ -3742,13 +3742,35 @@
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</xsd:attribute>
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</xsd:complexType>
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<xsd:complexType name="handlerAdviceChainType">
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<xsd:sequence>
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<xsd:choice minOccurs="0" maxOccurs="unbounded">
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<xsd:element name="ref" minOccurs="0" maxOccurs="unbounded">
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<xsd:complexType>
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<xsd:attribute name="bean" type="xsd:string" use="required">
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<xsd:annotation>
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<xsd:appinfo>
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<tool:annotation kind="ref">
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<tool:expected-type type="java.lang.Object" />
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</tool:annotation>
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</xsd:appinfo>
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</xsd:annotation>
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</xsd:attribute>
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</xsd:complexType>
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</xsd:element>
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<xsd:any namespace="##other" processContents="strict" minOccurs="0" maxOccurs="unbounded" />
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<xsd:element name="retry-advice" type="retryAdviceType" />
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</xsd:choice>
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</xsd:sequence>
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</xsd:complexType>
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<xsd:complexType name="expressionOrInnerEndpointDefinitionAware">
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<xsd:complexContent>
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<xsd:extension base="handlerEndpointType">
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<xsd:choice minOccurs="0" maxOccurs="3">
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<xsd:element name="poller" type="basePollerType" minOccurs="0" maxOccurs="1" />
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<xsd:element name="expression" type="innerExpressionType" minOccurs="0" maxOccurs="1" />
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<xsd:element name="request-handler-advice-chain" type="adviceChainType" minOccurs="0" maxOccurs="1" />
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<xsd:element name="request-handler-advice-chain" type="handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
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<xsd:any namespace="##other" processContents="strict" minOccurs="0" maxOccurs="1" />
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</xsd:choice>
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<xsd:attribute name="expression" type="xsd:string">
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@@ -4054,6 +4076,16 @@ The list of component name patterns you want to track (e.g., tracked-components
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</xsd:complexType>
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</xsd:element>
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<xsd:element name="handler-retry-advice">
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<xsd:complexType>
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<xsd:complexContent>
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<xsd:extension base="retryAdviceType">
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<xsd:attribute name="id" type="xsd:string" />
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</xsd:extension>
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</xsd:complexContent>
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</xsd:complexType>
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</xsd:element>
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<xsd:complexType name="control-bus-type">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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@@ -4069,6 +4101,91 @@ The list of component name patterns you want to track (e.g., tracked-components
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<xsd:attribute name="id" type="xsd:string" />
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</xsd:complexType>
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<xsd:complexType name="retryAdviceType">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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A convenient way of defining a MessageHandlerRetryAdvice. Uses a SimpleRetryPolicy
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and an optional Exponential or Fixed BackOffPolicy. Default is no back off.
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]]></xsd:documentation>
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</xsd:annotation>
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<xsd:choice minOccurs="0" maxOccurs="1">
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<xsd:element name="fixed-back-off">
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<xsd:complexType>
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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Defines a fixed back off policy.
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]]></xsd:documentation>
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</xsd:annotation>
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<xsd:attribute name="interval" type="xsd:string">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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The interval in milliseconds between attempts.
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Default 1000.
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]]></xsd:documentation>
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</xsd:annotation>
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</xsd:attribute>
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</xsd:complexType>
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</xsd:element>
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<xsd:element name="exponential-back-off">
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<xsd:complexType>
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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Defines an exponential back off policy.
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]]></xsd:documentation>
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</xsd:annotation>
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<xsd:attribute name="initial" type="xsd:string">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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The interval in milliseconds between the first and second attempts.
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Default 100.
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]]></xsd:documentation>
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</xsd:annotation>
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</xsd:attribute>
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<xsd:attribute name="multiplier" type="xsd:string">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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The previous interval is multiplied by this to determine the next interval,
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but also see 'maximum'. Default 2.0.
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]]></xsd:documentation>
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</xsd:annotation>
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</xsd:attribute>
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<xsd:attribute name="maximum" type="xsd:string">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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The maxumum interval in milliseconds between attempts; caps an interval
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calculated using the multiplier. Default 30000.
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]]></xsd:documentation>
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</xsd:annotation>
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</xsd:attribute>
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</xsd:complexType>
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</xsd:element>
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</xsd:choice>
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<xsd:attribute name="max-attempts" type="xsd:string">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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The maximum number of attempts to invoke the handler.
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Default 3.
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]]></xsd:documentation>
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</xsd:annotation>
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</xsd:attribute>
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<xsd:attribute name="recovery-channel" type="xsd:string">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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A MessageChannel to receive the message after retries are exhausted. Default
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is to not recover and throw the exception.
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]]></xsd:documentation>
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</xsd:annotation>
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</xsd:attribute>
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<xsd:attribute name="send-timeout" type="xsd:string">
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<xsd:annotation>
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<xsd:documentation><![CDATA[
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A timeout applied when sending to the 'recovery-channel'. Only applies if
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the recovery channel can block (such as a bounded QueueChannel that is full).
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]]></xsd:documentation>
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</xsd:annotation>
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</xsd:attribute>
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</xsd:complexType>
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<xsd:attributeGroup name="inputOutputChannelGroup">
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<xsd:attribute name="output-channel" type="xsd:string">
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<xsd:annotation>
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@@ -0,0 +1,44 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:int="http://www.springframework.org/schema/integration"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
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http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd">
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<int:handler-retry-advice id="a1" />
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<int:handler-retry-advice id="a2" max-attempts="4" />
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<int:handler-retry-advice id="a3" max-attempts="5">
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<int:fixed-back-off />
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</int:handler-retry-advice>
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<int:handler-retry-advice id="a4" max-attempts="6">
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<int:fixed-back-off interval="1234" />
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</int:handler-retry-advice>
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<int:handler-retry-advice id="a5" max-attempts="7">
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<int:exponential-back-off />
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</int:handler-retry-advice>
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<int:handler-retry-advice id="a6" max-attempts="8">
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<int:exponential-back-off initial="1000" multiplier="3.0" maximum="10000" />
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</int:handler-retry-advice>
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<int:handler-retry-advice id="a7" recovery-channel="foo" send-timeout="4567" />
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<int:channel id="foo" />
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<int:service-activator id="sa1" input-channel="foo" expression="'foo'">
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<int:request-handler-advice-chain>
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<ref bean="a1"/>
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</int:request-handler-advice-chain>
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</int:service-activator>
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<int:service-activator id="sa2" input-channel="foo" expression="'foo'">
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<int:request-handler-advice-chain>
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<int:retry-advice max-attempts="9" />
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</int:request-handler-advice-chain>
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</int:service-activator>
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</beans>
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@@ -0,0 +1,106 @@
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/*
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* Copyright 2014 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.integration.config.xml;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNotNull;
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import static org.junit.Assert.assertNull;
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import static org.junit.Assert.assertSame;
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import java.util.List;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Qualifier;
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import org.springframework.integration.handler.advice.RequestHandlerRetryAdvice;
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import org.springframework.integration.test.util.TestUtils;
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import org.springframework.messaging.MessageChannel;
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import org.springframework.messaging.MessageHandler;
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import org.springframework.test.context.ContextConfiguration;
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import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
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/**
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* @author Gary Russell
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* @since 4.0
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*
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*/
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@ContextConfiguration
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@RunWith(SpringJUnit4ClassRunner.class)
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public class RetryAdviceParserTests {
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@Autowired
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private RequestHandlerRetryAdvice a1;
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@Autowired
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private RequestHandlerRetryAdvice a2;
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@Autowired
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private RequestHandlerRetryAdvice a3;
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@Autowired
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private RequestHandlerRetryAdvice a4;
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@Autowired
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private RequestHandlerRetryAdvice a5;
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@Autowired
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private RequestHandlerRetryAdvice a6;
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@Autowired
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private RequestHandlerRetryAdvice a7;
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@Autowired @Qualifier("sa1.handler")
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private MessageHandler handler1;
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@Autowired @Qualifier("sa2.handler")
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private MessageHandler handler2;
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@Autowired
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private MessageChannel foo;
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@Test
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public void testAll() {
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assertEquals(Integer.valueOf(3), TestUtils.getPropertyValue(a1, "retryTemplate.retryPolicy.maxAttempts", Integer.class));
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assertEquals(Integer.valueOf(4), TestUtils.getPropertyValue(a2, "retryTemplate.retryPolicy.maxAttempts", Integer.class));
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assertEquals(Integer.valueOf(5), TestUtils.getPropertyValue(a3, "retryTemplate.retryPolicy.maxAttempts", Integer.class));
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assertEquals(Integer.valueOf(6), TestUtils.getPropertyValue(a4, "retryTemplate.retryPolicy.maxAttempts", Integer.class));
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assertEquals(Integer.valueOf(7), TestUtils.getPropertyValue(a5, "retryTemplate.retryPolicy.maxAttempts", Integer.class));
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assertEquals(Integer.valueOf(8), TestUtils.getPropertyValue(a6, "retryTemplate.retryPolicy.maxAttempts", Integer.class));
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assertEquals(Integer.valueOf(3), TestUtils.getPropertyValue(a7, "retryTemplate.retryPolicy.maxAttempts", Integer.class));
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assertEquals(Long.valueOf(1000), TestUtils.getPropertyValue(a3, "retryTemplate.backOffPolicy.backOffPeriod", Long.class));
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assertEquals(Long.valueOf(1234), TestUtils.getPropertyValue(a4, "retryTemplate.backOffPolicy.backOffPeriod", Long.class));
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|
||||
assertEquals(Long.valueOf(100), TestUtils.getPropertyValue(a5, "retryTemplate.backOffPolicy.initialInterval", Long.class));
|
||||
assertEquals(Double.valueOf(2.0), TestUtils.getPropertyValue(a5, "retryTemplate.backOffPolicy.multiplier", Double.class));
|
||||
assertEquals(Long.valueOf(30000), TestUtils.getPropertyValue(a5, "retryTemplate.backOffPolicy.maxInterval", Long.class));
|
||||
assertEquals(Long.valueOf(1000), TestUtils.getPropertyValue(a6, "retryTemplate.backOffPolicy.initialInterval", Long.class));
|
||||
assertEquals(Double.valueOf(3.0), TestUtils.getPropertyValue(a6, "retryTemplate.backOffPolicy.multiplier", Double.class));
|
||||
assertEquals(Long.valueOf(10000), TestUtils.getPropertyValue(a6, "retryTemplate.backOffPolicy.maxInterval", Long.class));
|
||||
|
||||
assertNull(TestUtils.getPropertyValue(a1, "recoveryCallback"));
|
||||
assertNotNull(TestUtils.getPropertyValue(a7, "recoveryCallback"));
|
||||
assertSame(foo, TestUtils.getPropertyValue(a7, "recoveryCallback.messagingTemplate.defaultDestination"));
|
||||
assertEquals(Long.valueOf(4567), TestUtils.getPropertyValue(a7, "recoveryCallback.messagingTemplate.sendTimeout"));
|
||||
|
||||
assertSame(a1, TestUtils.getPropertyValue(handler1, "adviceChain", List.class).get(0));
|
||||
assertEquals(Integer.valueOf(9), TestUtils.getPropertyValue(TestUtils.getPropertyValue(handler2, "adviceChain", List.class).get(0),
|
||||
"retryTemplate.retryPolicy.maxAttempts", Integer.class));
|
||||
}
|
||||
|
||||
}
|
||||
@@ -69,7 +69,7 @@
|
||||
<xsd:complexType>
|
||||
<xsd:choice minOccurs="0" maxOccurs="2">
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attributeGroup ref="integration:channelAdapterAttributes"/>
|
||||
<xsd:attribute name="order">
|
||||
|
||||
@@ -339,7 +339,7 @@ Only files matching this regular expression will be picked up by this adapter.
|
||||
<xsd:complexType name="outboundFileBaseType">
|
||||
<xsd:choice minOccurs="0" maxOccurs="2">
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1"/>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attribute name="id" type="xsd:string">
|
||||
<xsd:annotation>
|
||||
|
||||
@@ -24,7 +24,7 @@
|
||||
<xsd:complexContent>
|
||||
<xsd:extension base="base-ftp-adapter-type">
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="order" type="xsd:string">
|
||||
<xsd:annotation>
|
||||
@@ -204,7 +204,7 @@
|
||||
<xsd:complexContent>
|
||||
<xsd:extension base="base-ftp-adapter-type">
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="command" use="required">
|
||||
<xsd:annotation>
|
||||
|
||||
@@ -141,7 +141,7 @@
|
||||
</xsd:documentation>
|
||||
</xsd:annotation>
|
||||
</xsd:element>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attribute name="id" type="xsd:string" use="optional" />
|
||||
|
||||
|
||||
@@ -52,7 +52,7 @@
|
||||
<xsd:choice minOccurs="0" maxOccurs="2">
|
||||
<xsd:element ref="integration:poller" minOccurs="0"
|
||||
maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attributeGroup ref="integration:inputOutputChannelGroup" />
|
||||
<xsd:attribute name="customizer" type="xsd:string">
|
||||
|
||||
@@ -326,7 +326,7 @@
|
||||
</xsd:documentation>
|
||||
</xsd:annotation>
|
||||
</xsd:element>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attributeGroup ref="integration:channelAdapterAttributes"/>
|
||||
<xsd:attributeGroup ref="httpOutboundCommonAttributes"/>
|
||||
@@ -360,7 +360,7 @@
|
||||
</xsd:documentation>
|
||||
</xsd:annotation>
|
||||
</xsd:element>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attribute name="request-channel" type="xsd:string">
|
||||
<xsd:annotation>
|
||||
|
||||
@@ -68,7 +68,7 @@
|
||||
<xsd:complexContent>
|
||||
<xsd:extension base="udpAdapterType">
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType"
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType"
|
||||
minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="channel" type="xsd:string">
|
||||
@@ -182,7 +182,7 @@
|
||||
<xsd:element name="tcp-outbound-channel-adapter">
|
||||
<xsd:complexType>
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType"
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType"
|
||||
minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="id" type="xsd:string" />
|
||||
@@ -322,7 +322,7 @@
|
||||
<xsd:element name="tcp-outbound-gateway">
|
||||
<xsd:complexType>
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType"
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType"
|
||||
minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="id" type="xsd:string" />
|
||||
|
||||
@@ -226,7 +226,7 @@
|
||||
<xsd:extension base="queryType">
|
||||
<xsd:choice minOccurs="0" maxOccurs="2">
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1"/>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attributeGroup ref="integration:channelAdapterAttributes"/>
|
||||
<xsd:attribute name="sql-parameter-source-factory" type="xsd:string">
|
||||
@@ -313,7 +313,7 @@
|
||||
</xsd:annotation>
|
||||
</xsd:element>
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1"/>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attribute name="id" type="xsd:string" use="optional"/>
|
||||
<xsd:attribute name="update" type="xsd:string">
|
||||
@@ -610,7 +610,7 @@
|
||||
</xsd:documentation>
|
||||
</xsd:annotation>
|
||||
</xsd:element>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:sequence>
|
||||
<xsd:attributeGroup ref="coreStoredProcComponentAttributes"/>
|
||||
<xsd:attribute name="use-payload-as-parameter-source">
|
||||
@@ -746,7 +746,7 @@
|
||||
</xsd:documentation>
|
||||
</xsd:annotation>
|
||||
</xsd:element>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:sequence>
|
||||
</xsd:sequence>
|
||||
<xsd:attributeGroup ref="coreStoredProcComponentAttributes"/>
|
||||
|
||||
@@ -738,7 +738,7 @@
|
||||
<xsd:complexType>
|
||||
<xsd:choice minOccurs="0" maxOccurs="3">
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="reply-listener" minOccurs="0" maxOccurs="1">
|
||||
<xsd:annotation>
|
||||
<xsd:documentation><![CDATA[
|
||||
@@ -1080,7 +1080,7 @@
|
||||
<xsd:extension base="jmsAdapterType">
|
||||
<xsd:choice minOccurs="0" maxOccurs="2">
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1"/>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attribute name="destination" type="xsd:string">
|
||||
<xsd:annotation>
|
||||
|
||||
@@ -71,7 +71,7 @@
|
||||
<xsd:complexContent>
|
||||
<xsd:extension base="operationInvokingType">
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="request-channel" type="xsd:string" />
|
||||
<xsd:attribute name="reply-channel" type="xsd:string" use="optional" />
|
||||
@@ -99,7 +99,7 @@
|
||||
<xsd:complexContent>
|
||||
<xsd:extension base="operationInvokingType">
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="channel" type="xsd:string" use="optional" />
|
||||
</xsd:extension>
|
||||
@@ -137,7 +137,7 @@
|
||||
<xsd:complexContent>
|
||||
<xsd:extension base="adapterType">
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="default-notification-type" type="xsd:string" use="optional" />
|
||||
</xsd:extension>
|
||||
|
||||
@@ -96,7 +96,7 @@
|
||||
</xsd:documentation>
|
||||
</xsd:annotation>
|
||||
</xsd:element>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:sequence>
|
||||
<xsd:attributeGroup ref="coreJpaComponentAttributes"/>
|
||||
<xsd:attributeGroup ref="commonUpdatingJpaAttributes"/>
|
||||
@@ -188,7 +188,7 @@
|
||||
</xsd:documentation>
|
||||
</xsd:annotation>
|
||||
</xsd:element>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:sequence>
|
||||
<xsd:attributeGroup ref="coreJpaComponentAttributes" />
|
||||
<xsd:attributeGroup ref="commonUpdatingJpaAttributes"/>
|
||||
@@ -220,7 +220,7 @@
|
||||
</xsd:documentation>
|
||||
</xsd:annotation>
|
||||
</xsd:element>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:sequence>
|
||||
<xsd:attribute name="first-result" type="xsd:integer">
|
||||
<xsd:annotation>
|
||||
|
||||
@@ -28,7 +28,7 @@
|
||||
</xsd:annotation>
|
||||
<xsd:choice minOccurs="0" maxOccurs="2">
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1"/>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attributeGroup ref="integration:channelAdapterAttributes"/>
|
||||
<xsd:attribute name="mail-sender" type="xsd:string">
|
||||
|
||||
@@ -95,7 +95,7 @@
|
||||
<xsd:extension base="mongodbAdapterType">
|
||||
<xsd:choice minOccurs="0" maxOccurs="2">
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1"/>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
</xsd:extension>
|
||||
</xsd:complexContent>
|
||||
|
||||
@@ -79,7 +79,7 @@
|
||||
<xsd:extension base="gatewayType">
|
||||
<xsd:choice minOccurs="0" maxOccurs="2">
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1"/>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attribute name="request-channel" type="xsd:string">
|
||||
<xsd:annotation>
|
||||
|
||||
@@ -24,7 +24,7 @@
|
||||
<xsd:complexContent>
|
||||
<xsd:extension base="base-sftp-adapter-type">
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="order" type="xsd:string">
|
||||
<xsd:annotation>
|
||||
@@ -204,7 +204,7 @@
|
||||
<xsd:complexContent>
|
||||
<xsd:extension base="base-sftp-adapter-type">
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attribute name="command" use="required">
|
||||
<xsd:annotation>
|
||||
|
||||
@@ -176,7 +176,7 @@
|
||||
|
||||
<xsd:complexType name="outbound-twitter-type">
|
||||
<xsd:all>
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:all>
|
||||
<xsd:attributeGroup ref="integration:channelAdapterAttributes"/>
|
||||
<xsd:attribute name="twitter-template" use="required" type="xsd:string">
|
||||
|
||||
@@ -29,7 +29,7 @@
|
||||
<xsd:sequence>
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1"/>
|
||||
<xsd:element name="uri-variable" type="uriVariableType" minOccurs="0" maxOccurs="unbounded" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:sequence>
|
||||
<xsd:attribute name="id" type="xsd:string">
|
||||
<xsd:annotation>
|
||||
|
||||
@@ -194,7 +194,7 @@
|
||||
<xsd:complexType name="xmppOutboundAdapterType">
|
||||
<xsd:choice minOccurs="0" maxOccurs="2">
|
||||
<xsd:element ref="integration:poller" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:adviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
<xsd:element name="request-handler-advice-chain" type="integration:handlerAdviceChainType" minOccurs="0" maxOccurs="1" />
|
||||
</xsd:choice>
|
||||
<xsd:attributeGroup ref="integration:channelAdapterAttributes"/>
|
||||
<xsd:attribute name="xmpp-connection" type="xsd:string">
|
||||
|
||||
@@ -79,29 +79,29 @@
|
||||
The retry advice (<classname>o.s.i.handler.advice.RequestHandlerRetryAdvice</classname>)
|
||||
leverages the rich retry mechanisms provided by the
|
||||
<ulink url="https://github.com/SpringSource/spring-retry">Spring Retry</ulink> project. The core component
|
||||
of <emphasis>spring-retry</emphasis> is the <classname>RetryTemplate</classname>, which allows configuration
|
||||
of <code>spring-retry</code> is the <classname>RetryTemplate</classname>, which allows configuration
|
||||
of sophisticated retry scenarios, including <classname>RetryPolicy</classname> and <classname>BackoffPolicy</classname>
|
||||
strategies, with a number of implementations,
|
||||
as well as a <classname>RecoveryCallback</classname> strategy to determine the action to take when retries
|
||||
are exhausted.
|
||||
</para>
|
||||
<para><emphasis>Stateless Retry</emphasis></para>
|
||||
<para><emphasis role="bold">Stateless Retry</emphasis></para>
|
||||
<para>
|
||||
Stateless retry is the case where the retry activity is handled entirely within the advice, where the thread
|
||||
pauses (if so configured) and retries the action.
|
||||
</para>
|
||||
<para><emphasis>Stateful Retry</emphasis></para>
|
||||
<para><emphasis role="bold">Stateful Retry</emphasis></para>
|
||||
<para>
|
||||
Stateful retry is the case where the retry state is managed within the advice, but where an exception is thrown
|
||||
and the caller resubmits the request. An example for stateful retry is when we want the message originator
|
||||
(e.g. JMS) to be responsible for resubmitting, rather than performing it on the current thread. Stateful retry
|
||||
needs some mechanism to detect a retried submission.
|
||||
</para>
|
||||
<para><emphasis>Further Information</emphasis></para>
|
||||
<para><emphasis role="bold">Further Information</emphasis></para>
|
||||
<para>
|
||||
For more information on <emphasis>spring-retry</emphasis>, refer to the project's javadocs, as well as the
|
||||
For more information on <code>spring-retry</code>, refer to the project's javadocs, as well as the
|
||||
reference documentation for <ulink url="http://static.springsource.org/spring-batch/reference/html/retry.html">
|
||||
Spring Batch</ulink>, where <emphasis>spring-retry</emphasis> originated.
|
||||
Spring Batch</ulink>, where <code>spring-retry</code> originated.
|
||||
</para>
|
||||
<caution>
|
||||
The default back off behavior is no back off - retries are attempted immediately.
|
||||
@@ -120,14 +120,15 @@
|
||||
}
|
||||
}]]></programlisting>
|
||||
</para>
|
||||
<para><emphasis>Simple Stateless Retry</emphasis></para>
|
||||
<para><emphasis role="bold">Simple Stateless Retry</emphasis></para>
|
||||
<para>
|
||||
This example uses the default <emphasis>RetryTemplate</emphasis> which has a
|
||||
<emphasis>SimpleRetryPolicy</emphasis> which tries 3 times. There is no <emphasis>BackoffPolicy</emphasis>
|
||||
This example uses the default <classname>RetryTemplate</classname> which has a
|
||||
<classname>SimpleRetryPolicy</classname> which tries 3 times. There is no
|
||||
<classname>BackOffPolicy</classname>
|
||||
so the 3 attempts are made back-to-back-to-back with no delay between attempts. There is no
|
||||
<emphasis>RecoveryCallback</emphasis> so, the result is to throw the
|
||||
<classname>RecoveryCallback</classname> so, the result is to throw the
|
||||
exception to the caller after the final failed retry occurs. In a <emphasis>Spring Integration</emphasis>
|
||||
environment, this final exception might be handled using an <emphasis>error-channel</emphasis> on
|
||||
environment, this final exception might be handled using an <code>error-channel</code> on
|
||||
the inbound endpoint.
|
||||
</para>
|
||||
<para><programlisting language="xml"><![CDATA[<int:service-activator input-channel="input" ref="failer" method="service">
|
||||
@@ -144,11 +145,11 @@ DEBUG [task-scheduler-2]Checking for rethrow: count=2
|
||||
DEBUG [task-scheduler-2]Retry: count=2
|
||||
DEBUG [task-scheduler-2]Checking for rethrow: count=3
|
||||
DEBUG [task-scheduler-2]Retry failed last attempt: count=3]]></programlisting></para>
|
||||
<para><emphasis>Simple Stateless Retry with Recovery</emphasis></para>
|
||||
<para><emphasis role="bold">Simple Stateless Retry with Recovery</emphasis></para>
|
||||
<para>
|
||||
This example adds a <classname>RecoveryCallback</classname> to the
|
||||
above example; it uses a <classname>ErrorMessageSendingRecoverer</classname>
|
||||
to send an <emphasis>ErrorMessage</emphasis> to a channel.
|
||||
to send an <classname>ErrorMessage</classname> to a channel.
|
||||
</para>
|
||||
<para><programlisting language="xml"><![CDATA[<int:service-activator input-channel="input" ref="failer" method="service">
|
||||
<int:request-handler-advice-chain>
|
||||
@@ -171,9 +172,9 @@ DEBUG [task-scheduler-2]Retry: count=2
|
||||
DEBUG [task-scheduler-2]Checking for rethrow: count=3
|
||||
DEBUG [task-scheduler-2]Retry failed last attempt: count=3
|
||||
DEBUG [task-scheduler-2]Sending ErrorMessage :failedMessage:[Payload=...]]]></programlisting></para>
|
||||
<para><emphasis>Stateless Retry with Customized Policies, and Recovery</emphasis></para>
|
||||
<para><emphasis role="bold">Stateless Retry with Customized Policies, and Recovery</emphasis></para>
|
||||
<para>
|
||||
For more sophistication, we can provide the advice with a customized <emphasis>RetryTemplate</emphasis>.
|
||||
For more sophistication, we can provide the advice with a customized <classname>RetryTemplate</classname>.
|
||||
This example continues to use the <classname>SimpleRetryPolicy</classname> but it
|
||||
increases the attempts to 4. It also adds an <classname>ExponentialBackoffPolicy</classname>
|
||||
where the first retry waits 1 second, the second waits 5 seconds and the third waits 25 (for 4
|
||||
@@ -201,7 +202,8 @@ DEBUG [task-scheduler-2]Sending ErrorMessage :failedMessage:[Payload=...]]]></pr
|
||||
<property name="backOffPolicy">
|
||||
<bean class="org.springframework.retry.backoff.ExponentialBackOffPolicy">
|
||||
<property name="initialInterval" value="1000" />
|
||||
<property name="multiplier" value="5" />
|
||||
<property name="multiplier" value="5.0" />
|
||||
<property name="maxInterval" value="60000" />
|
||||
</bean>
|
||||
</property>
|
||||
</bean>
|
||||
@@ -220,11 +222,48 @@ DEBUG [task-scheduler-2]Sending ErrorMessage :failedMessage:[Payload=...]]]></pr
|
||||
58.084 DEBUG [task-scheduler-1]Checking for rethrow: count=4
|
||||
58.084 DEBUG [task-scheduler-1]Retry failed last attempt: count=4
|
||||
58.086 DEBUG [task-scheduler-1]Sending ErrorMessage :failedMessage:[Payload=...]]]></programlisting></para>
|
||||
<para><emphasis>Simple Stateful Retry with Recovery</emphasis></para>
|
||||
<para><emphasis role="bold">Namespace Support for Stateless Retry</emphasis></para>
|
||||
<para>
|
||||
Starting with <emphasis>version 4.0</emphasis>, the above configuration can be greatly
|
||||
simplified with the namespace support for the retry advice:
|
||||
</para>
|
||||
<para><programlisting language="xml"><![CDATA[<int:service-activator input-channel="input" ref="failer" method="service">
|
||||
<int:request-handler-advice-chain>
|
||||
<bean ref="retrier" />
|
||||
</request-handler-advice-chain>
|
||||
</int:service-activator>
|
||||
|
||||
<int:handler-retry-advice id="retrier" max-attempts="4" recovery-channel="myErrorChannel">
|
||||
<int:exponential-back-off initial="1000" multiplier="5.0" maximum="60000" />
|
||||
</int:handler-retry-advice>]]></programlisting></para>
|
||||
<para>
|
||||
In this example, the advice is defined as a top level bean so it can be used
|
||||
in multiple <code>request-handler-advice-chain</code>s. You can also
|
||||
define the advice directly within the chain:
|
||||
</para>
|
||||
<para><programlisting language="xml"><![CDATA[<int:service-activator input-channel="input" ref="failer" method="service">
|
||||
<int:request-handler-advice-chain>
|
||||
<int:retry-advice id="retrier" max-attempts="4" recovery-channel="myErrorChannel">
|
||||
<int:exponential-back-off initial="1000" multiplier="5.0" maximum="60000" />
|
||||
</int:retry-advice>
|
||||
</request-handler-advice-chain>
|
||||
</int:service-activator>]]></programlisting></para>
|
||||
<para>
|
||||
A <code><handler-retry-advice/></code> with no child element uses
|
||||
no back off; it can have a <code>fixed-back-off</code> or
|
||||
<code>exponential-back-off</code> child element. If there is no
|
||||
<code>recovery-channel</code>, the exception is thrown when retries are
|
||||
exhausted. The namespace can only be used with stateless retry.
|
||||
</para>
|
||||
<para>
|
||||
For more complex environments (custom policies etc), use normal
|
||||
<code><bean/></code> definitions.
|
||||
</para>
|
||||
<para><emphasis role="bold">Simple Stateful Retry with Recovery</emphasis></para>
|
||||
<para>
|
||||
To make retry stateful, we need to provide the Advice with a RetryStateGenerator
|
||||
implementation. This class is used to identify a message as being a resubmission
|
||||
so that the <emphasis>RetryTemplate</emphasis> can determine the current state of retry
|
||||
so that the <classname>RetryTemplate</classname> can determine the current state of retry
|
||||
for this message. The framework provides a <classname>SpelExpressionRetryStateGenerator</classname>
|
||||
which determines the message identifier using a SpEL expression.
|
||||
This is shown below; this example again uses the default policies (3 attempts with no back off); of
|
||||
@@ -289,7 +328,7 @@ Caused by: java.lang.RuntimeException: foo
|
||||
</para>
|
||||
</section>
|
||||
<para>
|
||||
<emphasis>Exception Classification for Retry</emphasis>
|
||||
<emphasis role="bold">Exception Classification for Retry</emphasis>
|
||||
|
||||
</para>
|
||||
<para>
|
||||
|
||||
@@ -133,5 +133,13 @@
|
||||
For more information see <xref linkend="channel-datatype-channel"/>.
|
||||
</para>
|
||||
</section>
|
||||
<section id="4.0-retry-config">
|
||||
<title>Simpler Retry Advice Configuration</title>
|
||||
<para>
|
||||
Simplified namespace support has been added to configure a
|
||||
<classname>RequestHandlerRetryAdvice</classname>.
|
||||
For more information see <xref linkend="retry-config"/>.
|
||||
</para>
|
||||
</section>
|
||||
</section>
|
||||
</chapter>
|
||||
|
||||
Reference in New Issue
Block a user