| /* |
| * 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.nutch.net; |
| |
| import org.apache.hadoop.conf.Configurable; |
| |
| import org.apache.nutch.plugin.Pluggable; |
| |
| /** |
| * Interface used to allow exemptions to external domain resources by overriding <code>db.ignore.external.links</code>. |
| * This is useful when the crawl is focused to a domain but resources like images are hosted on CDN. |
| */ |
| |
| public interface URLExemptionFilter extends Pluggable, Configurable{ |
| |
| /** The name of the extension point. */ |
| public final static String X_POINT_ID = URLExemptionFilter.class.getName(); |
| |
| /** |
| * Checks if toUrl is exempted when the ignore external is enabled |
| * @param fromUrl : the source url which generated the outlink |
| * @param toUrl : the destination url which needs to be checked for exemption |
| * @return true when toUrl is exempted from dbIgnore |
| */ |
| public boolean filter(String fromUrl, String toUrl); |
| |
| } |