01: /* OnHostsDecideRule
02: *
03: * $Id: OnHostsDecideRule.java 4649 2006-09-25 17:16:55Z paul_jack $
04: *
05: * Created on Apr 5, 2005
06: *
07: * Copyright (C) 2005 Internet Archive.
08: *
09: * This file is part of the Heritrix web crawler (crawler.archive.org).
10: *
11: * Heritrix is free software; you can redistribute it and/or modify
12: * it under the terms of the GNU Lesser Public License as published by
13: * the Free Software Foundation; either version 2.1 of the License, or
14: * any later version.
15: *
16: * Heritrix is distributed in the hope that it will be useful,
17: * but WITHOUT ANY WARRANTY; without even the implied warranty of
18: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: * GNU Lesser Public License for more details.
20: *
21: * You should have received a copy of the GNU Lesser Public License
22: * along with Heritrix; if not, write to the Free Software
23: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: */
25: package org.archive.crawler.deciderules;
26:
27: import org.archive.util.SurtPrefixSet;
28:
29: /**
30: * Rule applies configured decision to any URIs that
31: * are on one of the hosts in the configured set of
32: * hosts, filled from the seed set.
33: *
34: * @author gojomo
35: */
36: public class OnHostsDecideRule extends SurtPrefixedDecideRule {
37:
38: private static final long serialVersionUID = -7566348189389792625L;
39:
40: //private static final Logger logger =
41: // Logger.getLogger(OnHostsDecideRule.class.getName());
42: /**
43: * Usual constructor.
44: * @param name
45: */
46: public OnHostsDecideRule(String name) {
47: super (name);
48: setDescription("OnHostsDecideRule. Makes the configured decision "
49: + "for any URI which is on one of the hosts in the "
50: + "configured set of hostnames (derived from the seed"
51: + "list).");
52: // disable direct setting of SURTs-related options
53: getElementFromDefinition(ATTR_SEEDS_AS_SURT_PREFIXES)
54: .setTransient(true);
55: getElementFromDefinition(ATTR_SURTS_SOURCE_FILE).setTransient(
56: true);
57: // leaving surts-dump as option helpful for debugging/learning, for now
58: //getElementFromDefinition(ATTR_SURTS_DUMP_FILE).setTransient(true);
59: }
60:
61: /**
62: * Patch the SURT prefix set so that it only includes host-enforcing prefixes
63: *
64: * @see org.archive.crawler.deciderules.SurtPrefixedDecideRule#readPrefixes()
65: */
66: protected void readPrefixes() {
67: buildSurtPrefixSet();
68: surtPrefixes.convertAllPrefixesToHosts();
69: dumpSurtPrefixSet();
70: }
71:
72: protected String prefixFrom(String uri) {
73: return SurtPrefixSet.convertPrefixToHost(super.prefixFrom(uri));
74: }
75: }
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