/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.camel.processor;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.ExchangeProperties;
import org.apache.camel.builder.RouteBuilder;
/**
* @version
*/
public class DynamicRouterExchangePropertiesTest extends ContextTestSupport {
private static List<String> bodies = new ArrayList<String>();
public void testDynamicRouter() throws Exception {
getMockEndpoint("mock:a").expectedBodiesReceived("Hello World");
getMockEndpoint("mock:a").expectedPropertyReceived("invoked", 1);
getMockEndpoint("mock:b").expectedBodiesReceived("Hello World");
getMockEndpoint("mock:b").expectedPropertyReceived("invoked", 2);
getMockEndpoint("mock:c").expectedBodiesReceived("Hello World");
getMockEndpoint("mock:c").expectedPropertyReceived("invoked", 2);
getMockEndpoint("mock:foo").expectedBodiesReceived("Bye World");
getMockEndpoint("mock:foo").expectedPropertyReceived("invoked", 3);
getMockEndpoint("mock:result").expectedBodiesReceived("Bye World");
getMockEndpoint("mock:result").expectedPropertyReceived("invoked", 4);
template.sendBody("direct:start", "Hello World");
assertMockEndpointsSatisfied();
assertEquals(5, bodies.size());
assertEquals("Hello World", bodies.get(0));
assertEquals("Hello World", bodies.get(1));
assertEquals("Hello World", bodies.get(2));
assertEquals("Bye World", bodies.get(3));
assertEquals("Bye World", bodies.get(4));
}
@Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
@Override
public void configure() throws Exception {
from("direct:start")
// use a bean as the dynamic router
.dynamicRouter(method(DynamicRouterExchangePropertiesTest.class, "slip"));
from("direct:foo").transform(constant("Bye World")).to("mock:foo");
}
};
}
// START SNIPPET: e2
/**
* Use this method to compute dynamic where we should route next.
*
* @param body the message body
* @param properties the exchange properties where we can store state between invocations
* @return endpoints to go, or <tt>null</tt> to indicate the end
*/
public String slip(String body, @ExchangeProperties Map<String, Object> properties) {
bodies.add(body);
// get the state from the exchange properties and keep track how many times
// we have been invoked
int invoked = 0;
Object current = properties.get("invoked");
if (current != null) {
invoked = Integer.valueOf(current.toString());
}
invoked++;
// and store the state back on the properties
properties.put("invoked", invoked);
if (invoked == 1) {
return "mock:a";
} else if (invoked == 2) {
return "mock:b,mock:c";
} else if (invoked == 3) {
return "direct:foo";
} else if (invoked == 4) {
return "mock:result";
}
// no more so return null
return null;
}
// END SNIPPET: e2
}