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This project contains some of the configurable modules used within the Heritrix application to crawl the web. The modules in this project can be used in applications other than Heritrix, however.

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/*
 *  This file is part of the Heritrix web crawler (crawler.archive.org).
 *
 *  Licensed to the Internet Archive (IA) by one or more individual 
 *  contributors. 
 *
 *  The IA 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.archive.modules.deciderules;

/**
 * Applies configured decision for URIs with content length greater than
 * a given threshold length value. Examines either HTTP header Content-Length
 * or actual downloaded content length (based on the useHeaderLength property), 
 * and has no effect on resources shorter than or equal to the given threshold 
 * value.
 * 
 * Note that because neither the Content-Length header nor the actual size are
 * available at URI-scoping time, this rule is unusable in crawl scopes. 
 * Instead, the earliest it can be used is as a mid-fetch rule (in FetchHTTP), 
 * when the headers are available but not yet the body. It can also be used 
 * to affect processing after the URI is fully fetched. 
 */
public class ResourceLongerThanDecideRule extends ResourceNoLongerThanDecideRule {
    private static final long serialVersionUID = 3L;

    @Override
    protected boolean test(int contentlength) {
        return contentlength > getContentLengthThreshold();        
    }
    
}