001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.management.mbean;
018
019import org.apache.camel.CamelContext;
020import org.apache.camel.api.management.ManagedResource;
021import org.apache.camel.api.management.mbean.ManagedStickyLoadBalancerMBean;
022import org.apache.camel.model.LoadBalanceDefinition;
023import org.apache.camel.model.ProcessorDefinition;
024import org.apache.camel.model.loadbalancer.StickyLoadBalancerDefinition;
025import org.apache.camel.processor.loadbalancer.StickyLoadBalancer;
026
027@ManagedResource(description = "Managed Sticky LoadBalancer")
028public class ManagedStickyLoadBalancer extends ManagedProcessor implements ManagedStickyLoadBalancerMBean {
029    private final StickyLoadBalancer processor;
030
031    public ManagedStickyLoadBalancer(CamelContext context, StickyLoadBalancer processor, LoadBalanceDefinition definition) {
032        super(context, processor, definition);
033        this.processor = processor;
034    }
035
036    @Override
037    public LoadBalanceDefinition getDefinition() {
038        return (LoadBalanceDefinition) super.getDefinition();
039    }
040
041    @Override
042    public String getExpressionLanguage() {
043        StickyLoadBalancerDefinition sticky = (StickyLoadBalancerDefinition) getDefinition().getLoadBalancerType();
044        return sticky.getCorrelationExpression().getExpressionType().getLanguage();
045    }
046
047    @Override
048    public String getExpression() {
049        StickyLoadBalancerDefinition sticky = (StickyLoadBalancerDefinition) getDefinition().getLoadBalancerType();
050        return sticky.getCorrelationExpression().getExpressionType().getExpression();
051    }
052
053    @Override
054    public Integer getSize() {
055        return processor.getProcessors().size();
056    }
057
058    @Override
059    public String getLastChosenProcessorId() {
060        int idx = processor.getLastChosenProcessorIndex();
061        if (idx != -1) {
062            LoadBalanceDefinition def = getDefinition();
063            ProcessorDefinition<?> output = def.getOutputs().get(idx);
064            if (output != null) {
065                return output.getId();
066            }
067        }
068        return null;
069    }
070
071}