/**
* 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.web.util;
import java.util.List;
import org.apache.camel.model.LoadBalanceDefinition;
import org.apache.camel.model.ProcessorDefinition;
import org.apache.camel.processor.loadbalancer.FailOverLoadBalancer;
import org.apache.camel.processor.loadbalancer.LoadBalancer;
import org.apache.camel.processor.loadbalancer.RandomLoadBalancer;
import org.apache.camel.processor.loadbalancer.RoundRobinLoadBalancer;
import org.apache.camel.processor.loadbalancer.StickyLoadBalancer;
import org.apache.camel.processor.loadbalancer.TopicLoadBalancer;
/**
*
*/
public final class LoadBalanceDefinitionRenderer {
private LoadBalanceDefinitionRenderer() {
// Utility class, no public or protected default constructor
}
public static void render(StringBuilder buffer, ProcessorDefinition<?> processor) {
LoadBalanceDefinition loadB = (LoadBalanceDefinition)processor;
// buffer.append(".").append(output.getShortName()).append("()");
buffer.append(".").append("loadBalance").append("()");
LoadBalancer lb = loadB.getLoadBalancerType().getLoadBalancer(null);
if (lb instanceof FailOverLoadBalancer) {
buffer.append(".failover(");
List<Class> exceptions = ((FailOverLoadBalancer)lb).getExceptions();
for (Class excep : exceptions) {
buffer.append(excep.getSimpleName()).append(".class");
if (excep != exceptions.get(exceptions.size() - 1)) {
buffer.append(", ");
}
}
buffer.append(")");
} else if (lb instanceof RandomLoadBalancer) {
buffer.append(".random()");
} else if (lb instanceof RoundRobinLoadBalancer) {
buffer.append(".roundRobin()");
} else if (lb instanceof StickyLoadBalancer) {
buffer.append(".sticky(");
ExpressionRenderer.renderExpression(buffer, ((StickyLoadBalancer)lb).getCorrelationExpression().toString());
buffer.append(")");
} else if (lb instanceof TopicLoadBalancer) {
buffer.append(".topic()");
}
List<ProcessorDefinition> branches = loadB.getOutputs();
for (ProcessorDefinition branch : branches) {
ProcessorDefinitionRenderer.render(buffer, branch);
}
}
}