| /* |
| * 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.component.hazelcast.atomicnumber; |
| |
| import java.util.Map; |
| |
| import com.hazelcast.core.HazelcastInstance; |
| import com.hazelcast.core.IAtomicLong; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.component.hazelcast.HazelcastComponentHelper; |
| import org.apache.camel.component.hazelcast.HazelcastConstants; |
| import org.apache.camel.component.hazelcast.HazelcastDefaultEndpoint; |
| import org.apache.camel.component.hazelcast.HazelcastDefaultProducer; |
| import org.apache.camel.component.hazelcast.HazelcastOperation; |
| import org.apache.camel.util.ObjectHelper; |
| |
| public class HazelcastAtomicnumberProducer extends HazelcastDefaultProducer { |
| |
| private final IAtomicLong atomicnumber; |
| |
| public HazelcastAtomicnumberProducer(HazelcastInstance hazelcastInstance, HazelcastDefaultEndpoint endpoint, String cacheName) { |
| super(endpoint); |
| this.atomicnumber = hazelcastInstance.getAtomicLong(cacheName); |
| } |
| |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| |
| Map<String, Object> headers = exchange.getIn().getHeaders(); |
| |
| long expectedValue = 0L; |
| |
| if (headers.containsKey(HazelcastConstants.EXPECTED_VALUE)) { |
| expectedValue = (long) headers.get(HazelcastConstants.EXPECTED_VALUE); |
| } |
| |
| HazelcastOperation operation = lookupOperation(exchange); |
| |
| switch (operation) { |
| |
| case INCREMENT: |
| this.increment(exchange); |
| break; |
| |
| case DECREMENT: |
| this.decrement(exchange); |
| break; |
| |
| case COMPARE_AND_SET: |
| this.compare(expectedValue, exchange); |
| break; |
| |
| case GET_AND_ADD: |
| this.getAndAdd(exchange); |
| break; |
| |
| case SET_VALUE: |
| this.set(exchange); |
| break; |
| |
| case GET: |
| this.get(exchange); |
| break; |
| |
| case DESTROY: |
| this.destroy(); |
| break; |
| |
| default: |
| throw new IllegalArgumentException(String.format("The value '%s' is not allowed for parameter '%s' on the ATOMICNUMBER.", operation, HazelcastConstants.OPERATION)); |
| } |
| |
| // finally copy headers |
| HazelcastComponentHelper.copyHeaders(exchange); |
| } |
| |
| private void get(Exchange exchange) { |
| exchange.getOut().setBody(this.atomicnumber.get()); |
| } |
| |
| private void increment(Exchange exchange) { |
| exchange.getOut().setBody(this.atomicnumber.incrementAndGet()); |
| } |
| |
| private void decrement(Exchange exchange) { |
| exchange.getOut().setBody(this.atomicnumber.decrementAndGet()); |
| } |
| |
| private void compare(long expected, Exchange exchange) { |
| long update = exchange.getIn().getBody(Long.class); |
| if (ObjectHelper.isEmpty(expected)) { |
| throw new IllegalArgumentException("Expected value must be specified"); |
| } |
| exchange.getOut().setBody(this.atomicnumber.compareAndSet(expected, update)); |
| } |
| |
| private void getAndAdd(Exchange exchange) { |
| long delta = exchange.getIn().getBody(Long.class); |
| exchange.getOut().setBody(this.atomicnumber.getAndAdd(delta)); |
| } |
| |
| private void set(Exchange exchange) { |
| this.atomicnumber.set(exchange.getIn().getBody(Long.class)); |
| } |
| |
| private void destroy() { |
| this.atomicnumber.destroy(); |
| } |
| |
| } |