001/* 002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl-2.1.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * <a href="mailto:grenard@nuxeo.com">Guillaume Renard</a> 016 * 017 */ 018 019package org.nuxeo.elasticsearch.http.readonly.service; 020 021import java.util.Map; 022import java.util.concurrent.ConcurrentHashMap; 023 024import org.apache.commons.logging.Log; 025import org.apache.commons.logging.LogFactory; 026import org.nuxeo.elasticsearch.http.readonly.filter.SearchRequestFilter; 027import org.nuxeo.runtime.model.ComponentContext; 028import org.nuxeo.runtime.model.ComponentInstance; 029import org.nuxeo.runtime.model.ComponentName; 030import org.nuxeo.runtime.model.DefaultComponent; 031 032/** 033 * @since 7.4 034 */ 035public class RequestFilterService extends DefaultComponent { 036 037 public static final ComponentName NAME = new ComponentName(ComponentName.DEFAULT_TYPE, 038 "org.nuxeo.elasticsearch.http.readonly.RequestFilterService"); 039 040 private static final Log log = LogFactory.getLog(RequestFilterService.class); 041 042 protected static final String FILTER_EXT_POINT = "filters"; 043 044 protected Map<String, Class> requestFilters; 045 046 @Override 047 public void activate(ComponentContext context) { 048 requestFilters = new ConcurrentHashMap<String, Class>(); 049 } 050 051 @Override 052 public void deactivate(ComponentContext context) { 053 requestFilters.clear(); 054 requestFilters = null; 055 } 056 057 public Map<String, Class> getRequestFilters() { 058 return requestFilters; 059 060 } 061 062 public SearchRequestFilter getRequestFilters(String indices) throws InstantiationException, IllegalAccessException { 063 Class clazz = requestFilters.get(indices); 064 if (clazz == null) { 065 return null; 066 } 067 return (SearchRequestFilter) clazz.newInstance(); 068 } 069 070 @Override 071 public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 072 if (FILTER_EXT_POINT.equals(extensionPoint)) { 073 RequestFilterDescriptor des = (RequestFilterDescriptor) contribution; 074 requestFilters.put(des.getIndex(), des.getFilterClass()); 075 log.info("Registered filter: " + des.getFilterClass() + " for index " + des.getIndex()); 076 } 077 } 078 079 @Override 080 public void unregisterContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 081 if (FILTER_EXT_POINT.equals(extensionPoint)) { 082 RequestFilterDescriptor des = (RequestFilterDescriptor) contribution; 083 Class filter = requestFilters.remove(des.getIndex()); 084 if (filter != null) { 085 log.info("Unregistered filter: " + filter + " for index " + des.getIndex()); 086 } 087 } 088 } 089 090}