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From "Claus Ibsen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CAMEL-4371) Add an ability to replace endpoints
Date Fri, 06 Jul 2012 08:57:33 GMT

     [ https://issues.apache.org/jira/browse/CAMEL-4371?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Claus Ibsen resolved CAMEL-4371.
--------------------------------

       Resolution: Won't Fix
    Fix Version/s: 2.10.0

The current functionality in adwice with and whatnot can already do this
                
> Add an ability to replace endpoints
> -----------------------------------
>
>                 Key: CAMEL-4371
>                 URL: https://issues.apache.org/jira/browse/CAMEL-4371
>             Project: Camel
>          Issue Type: Improvement
>          Components: camel-core
>    Affects Versions: 2.8.0
>            Reporter: Sergey Zhemzhitsky
>            Assignee: Ashwin Karpe
>             Fix For: 2.10.0
>
>
> Sometimes it can be useful to replace endpoints in the camel context. For example, in
unit tests it will not be necessary to define multiple properties files for different environments
with placeholders.
> Here is the endpoint strategy to replace endpoints
> {code}
> package org.apache.camel.impl;
> public class ReplaceEndpointStrategy implements EndpointStrategy {
>     private Map<String, String> replacements = Collections.emptyMap();
>     @Override
>     public Endpoint registerEndpoint(String uri, Endpoint endpoint) {
>         CamelContext context = endpoint.getCamelContext();
>         for(Entry<String, String> entry : replacements.entrySet()) {
>             if(EndpointHelper.matchEndpoint(uri, entry.getKey())) {
>                 Endpoint newEndpoint = context.getEndpoint(entry.getValue());
>                 return newEndpoint;
>             }
>         }
>         return endpoint;
>     }
>     public void setReplacements(Map<String, String> replacements) {
>         this.replacements = replacements;
>     }
> }
> {code}
> Here is it can be used from spring
> {code}
> <?xml version="1.0" encoding="UTF-8"?>
> <beans xmlns="http://www.springframework.org/schema/beans"
>     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>     xsi:schemaLocation="
>         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
>         http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd
>     ">
>     <bean class="org.apache.camel.impl.ReplaceEndpointStrategy">
>         <property name="replacements">
>             <map>
>                 <entry key="timer://test*" value="direct://start" />
>                 <entry key="log://timer*" value="mock://tick" />
>             </map>
>         </property>
>     </bean>
>     <camelContext xmlns="http://camel.apache.org/schema/spring">
>         <route>
>             <from uri="timer://testTimer" />
>             <to uri="log://timerTick" />
>         </route>
>     </camelContext>
> </beans>
> {code}
> And the unit test
> {code}
> package org.apache.camel.impl;
> import static org.junit.Assert.assertNotNull;
> import org.apache.camel.CamelContext;
> import org.apache.camel.Endpoint;
> import org.apache.camel.ProducerTemplate;
> import org.apache.camel.component.mock.MockEndpoint;
> import org.junit.Test;
> import org.junit.runner.RunWith;
> import org.springframework.beans.factory.annotation.Autowired;
> import org.springframework.test.context.ContextConfiguration;
> import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
> @RunWith(SpringJUnit4ClassRunner.class)
> @ContextConfiguration
> public class ReplaceEndpointStrategyTest {
>     @Autowired
>     private CamelContext camelContext;
>     @Autowired
>     private ProducerTemplate producer;
>     @Test
>     public void registerEndpoint() throws Exception {
>         assertNotNull("direct:start is null", camelContext.hasEndpoint("direct:start"));
>         assertNotNull("mock:tick is null", camelContext.hasEndpoint("mock:tick"));
>     }
>     @Test
>     public void route() throws Exception {
>         Endpoint start = camelContext.hasEndpoint("direct:start");
>         MockEndpoint complete = (MockEndpoint) camelContext.hasEndpoint("mock:tick");
>         complete.expectedBodiesReceived("Hello World!");
>         producer.sendBody(start, "Hello World!");
>         complete.assertIsSatisfied();
>     }
> }
> {code}

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