| /** |
| * 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.metron.enrichment.parallel; |
| |
| import org.apache.metron.enrichment.cache.CacheKey; |
| import org.apache.metron.enrichment.interfaces.EnrichmentAdapter; |
| import org.json.simple.JSONObject; |
| |
| import java.util.concurrent.Callable; |
| import java.util.function.Function; |
| |
| /** |
| * Enrich based on a key and enrichment adapter. The CacheKey contains all necessary input information for an enrichment. |
| */ |
| public class EnrichmentCallable implements Callable<JSONObject>, Function<CacheKey, JSONObject> { |
| CacheKey key; |
| EnrichmentAdapter<CacheKey> adapter; |
| |
| public EnrichmentCallable( CacheKey key |
| , EnrichmentAdapter<CacheKey> adapter |
| ) |
| { |
| this.key = key; |
| this.adapter = adapter; |
| } |
| |
| /** |
| * Computes a result, or throws an exception if unable to do so. |
| * |
| * @return computed result |
| * @throws Exception if unable to compute a result |
| */ |
| @Override |
| public JSONObject call() throws Exception { |
| //Log access for this key. |
| adapter.logAccess(key); |
| return adapter.enrich(key); |
| } |
| |
| /** |
| * Applies this function to the given argument. |
| * |
| * @param cacheKey the function argument |
| * @return the function result |
| */ |
| @Override |
| public JSONObject apply(CacheKey cacheKey) { |
| adapter.logAccess(key); |
| return adapter.enrich(cacheKey); |
| } |
| } |