| /* |
| * 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.map; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.TimeUnit; |
| |
| import com.hazelcast.core.HazelcastInstance; |
| import com.hazelcast.core.IMap; |
| import com.hazelcast.query.SqlPredicate; |
| 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.HazelcastDefaultProducer; |
| import org.apache.camel.component.hazelcast.HazelcastOperation; |
| import org.apache.camel.util.ObjectHelper; |
| |
| public class HazelcastMapProducer extends HazelcastDefaultProducer { |
| |
| private final IMap<Object, Object> cache; |
| |
| public HazelcastMapProducer(HazelcastInstance hazelcastInstance, HazelcastMapEndpoint endpoint, String cacheName) { |
| super(endpoint); |
| this.cache = hazelcastInstance.getMap(cacheName); |
| } |
| |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| |
| Map<String, Object> headers = exchange.getIn().getHeaders(); |
| |
| // GET header parameters |
| Object oid = null; |
| Object ovalue = null; |
| Object ttl = null; |
| Object ttlUnit = null; |
| String query = null; |
| |
| if (headers.containsKey(HazelcastConstants.OBJECT_ID)) { |
| oid = headers.get(HazelcastConstants.OBJECT_ID); |
| } |
| |
| if (headers.containsKey(HazelcastConstants.OBJECT_VALUE)) { |
| ovalue = headers.get(HazelcastConstants.OBJECT_VALUE); |
| } |
| |
| if (headers.containsKey(HazelcastConstants.TTL_VALUE)) { |
| ttl = headers.get(HazelcastConstants.TTL_VALUE); |
| } |
| |
| if (headers.containsKey(HazelcastConstants.TTL_UNIT)) { |
| ttlUnit = headers.get(HazelcastConstants.TTL_UNIT); |
| } |
| |
| if (headers.containsKey(HazelcastConstants.QUERY)) { |
| query = (String) headers.get(HazelcastConstants.QUERY); |
| } |
| |
| final HazelcastOperation operation = lookupOperation(exchange); |
| switch (operation) { |
| |
| case PUT: |
| if (ObjectHelper.isEmpty(ttl) && ObjectHelper.isEmpty(ttlUnit)) { |
| this.put(oid, exchange); |
| } else { |
| this.put(oid, ttl, ttlUnit, exchange); |
| } |
| break; |
| |
| case PUT_IF_ABSENT: |
| if (ObjectHelper.isEmpty(ttl) && ObjectHelper.isEmpty(ttlUnit)) { |
| this.putIfAbsent(oid, exchange); |
| } else { |
| this.putIfAbsent(oid, ttl, ttlUnit, exchange); |
| } |
| break; |
| |
| case GET: |
| this.get(oid, exchange); |
| break; |
| |
| case GET_ALL: |
| this.getAll(oid, exchange); |
| break; |
| |
| case GET_KEYS: |
| this.getKeys(exchange); |
| break; |
| |
| case CONTAINS_KEY: |
| this.containsKey(oid, exchange); |
| break; |
| |
| case CONTAINS_VALUE: |
| this.containsValue(exchange); |
| break; |
| |
| case DELETE: |
| this.delete(oid); |
| break; |
| |
| case UPDATE: |
| if (ObjectHelper.isEmpty(ovalue)) { |
| this.update(oid, exchange); |
| } else { |
| this.update(oid, ovalue, exchange); |
| } |
| break; |
| |
| case QUERY: |
| this.query(query, exchange); |
| break; |
| |
| case CLEAR: |
| this.clear(exchange); |
| break; |
| |
| case EVICT: |
| this.evict(oid); |
| break; |
| |
| case EVICT_ALL: |
| this.evictAll(); |
| break; |
| |
| default: |
| throw new IllegalArgumentException(String.format("The value '%s' is not allowed for parameter '%s' on the MAP cache.", operation, HazelcastConstants.OPERATION)); |
| } |
| |
| // finally copy headers |
| HazelcastComponentHelper.copyHeaders(exchange); |
| } |
| |
| /** |
| * QUERY map with a sql like syntax (see http://www.hazelcast.com/) |
| */ |
| private void query(String query, Exchange exchange) { |
| Collection<Object> result; |
| if (ObjectHelper.isNotEmpty(query)) { |
| result = this.cache.values(new SqlPredicate(query)); |
| } else { |
| result = this.cache.values(); |
| } |
| exchange.getOut().setBody(result); |
| } |
| |
| /** |
| * UPDATE an object in your cache (the whole object will be replaced) |
| */ |
| private void update(Object oid, Exchange exchange) { |
| Object body = exchange.getIn().getBody(); |
| this.cache.lock(oid); |
| this.cache.replace(oid, body); |
| this.cache.unlock(oid); |
| } |
| |
| /** |
| * Replaces the entry for given id with a specific value in the body, only if currently mapped to a given value |
| */ |
| private void update(Object oid, Object ovalue, Exchange exchange) { |
| Object body = exchange.getIn().getBody(); |
| this.cache.lock(oid); |
| this.cache.replace(oid, ovalue, body); |
| this.cache.unlock(oid); |
| } |
| |
| /** |
| * remove an object from the cache |
| */ |
| private void delete(Object oid) { |
| this.cache.remove(oid); |
| } |
| |
| /** |
| * find an object by the given id and give it back |
| */ |
| private void get(Object oid, Exchange exchange) { |
| exchange.getOut().setBody(this.cache.get(oid)); |
| } |
| |
| |
| /** |
| * GET All objects and give it back |
| */ |
| private void getAll(Object oid, Exchange exchange) { |
| exchange.getOut().setBody(this.cache.getAll((Set<Object>) oid)); |
| } |
| |
| /** |
| * PUT a new object into the cache |
| */ |
| private void put(Object oid, Exchange exchange) { |
| Object body = exchange.getIn().getBody(); |
| this.cache.put(oid, body); |
| } |
| |
| /** |
| * PUT a new object into the cache with a specific time to live |
| */ |
| private void put(Object oid, Object ttl, Object ttlUnit, Exchange exchange) { |
| Object body = exchange.getIn().getBody(); |
| this.cache.put(oid, body, (long) ttl, (TimeUnit) ttlUnit); |
| } |
| |
| /** |
| * if the specified key is not already associated with a value, associate it with the given value. |
| */ |
| private void putIfAbsent(Object oid, Exchange exchange) { |
| Object body = exchange.getIn().getBody(); |
| this.cache.putIfAbsent(oid, body); |
| } |
| |
| /** |
| * Puts an entry into this map with a given ttl (time to live) value if the specified key is not already associated with a value. |
| */ |
| private void putIfAbsent(Object oid, Object ttl, Object ttlUnit, Exchange exchange) { |
| Object body = exchange.getIn().getBody(); |
| this.cache.putIfAbsent(oid, body, (long) ttl, (TimeUnit) ttlUnit); |
| } |
| |
| /** |
| * Clear all the entries |
| */ |
| private void clear(Exchange exchange) { |
| this.cache.clear(); |
| } |
| |
| /** |
| * Eviction operation for a specific key |
| */ |
| private void evict(Object oid) { |
| this.cache.evict(oid); |
| } |
| |
| /** |
| * Evict All operation |
| */ |
| private void evictAll() { |
| this.cache.evictAll(); |
| } |
| |
| /** |
| * Check for a specific key in the cache and return true if it exists or false otherwise |
| */ |
| private void containsKey(Object oid, Exchange exchange) { |
| exchange.getOut().setBody(this.cache.containsKey(oid)); |
| } |
| |
| /** |
| * Check for a specific value in the cache and return true if it exists or false otherwise |
| */ |
| private void containsValue(Exchange exchange) { |
| Object body = exchange.getIn().getBody(); |
| exchange.getOut().setBody(this.cache.containsValue(body)); |
| } |
| |
| /** |
| * GET keys set of objects and give it back |
| */ |
| private void getKeys(Exchange exchange) { |
| exchange.getOut().setBody(this.cache.keySet()); |
| } |
| } |