| /** |
| * 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 org.apache.camel.AsyncCallback; |
| import org.apache.camel.ContextTestSupport; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.component.mock.MockEndpoint; |
| import org.apache.camel.processor.loadbalancer.LoadBalancerSupport; |
| |
| public class CustomLoadBalanceTest extends ContextTestSupport { |
| protected MockEndpoint x; |
| protected MockEndpoint y; |
| protected MockEndpoint z; |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| |
| x = getMockEndpoint("mock:x"); |
| y = getMockEndpoint("mock:y"); |
| z = getMockEndpoint("mock:z"); |
| } |
| |
| protected RouteBuilder createRouteBuilder() { |
| return new RouteBuilder() { |
| public void configure() { |
| // START SNIPPET: e1 |
| from("direct:start") |
| // using our custom load balancer |
| .loadBalance(new MyLoadBalancer()) |
| .to("mock:x", "mock:y", "mock:z"); |
| // END SNIPPET: e1 |
| } |
| }; |
| } |
| |
| public void testCustomLoadBalancer() throws Exception { |
| x.expectedBodiesReceived("x", "x", "x"); |
| y.expectedBodiesReceived("y", "y"); |
| z.expectedBodiesReceived("foo", "bar", "baz"); |
| |
| template.sendBody("direct:start", "x"); |
| template.sendBody("direct:start", "y"); |
| template.sendBody("direct:start", "foo"); |
| template.sendBody("direct:start", "bar"); |
| template.sendBody("direct:start", "y"); |
| template.sendBody("direct:start", "x"); |
| template.sendBody("direct:start", "x"); |
| template.sendBody("direct:start", "baz"); |
| |
| assertMockEndpointsSatisfied(); |
| } |
| |
| // START SNIPPET: e2 |
| public static class MyLoadBalancer extends LoadBalancerSupport { |
| |
| public boolean process(Exchange exchange, AsyncCallback callback) { |
| String body = exchange.getIn().getBody(String.class); |
| try { |
| if ("x".equals(body)) { |
| getProcessors().get(0).process(exchange); |
| } else if ("y".equals(body)) { |
| getProcessors().get(1).process(exchange); |
| } else { |
| getProcessors().get(2).process(exchange); |
| } |
| } catch (Throwable e) { |
| exchange.setException(e); |
| } |
| callback.done(true); |
| return true; |
| } |
| } |
| // END SNIPPET: e2 |
| |
| } |