crawlcontroller.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<a name="560" href="#560">560</a>                 <strong>while</strong> (it.hasNext()) {
<a name="561" href="#561">561</a>                     (
<a name="562" href="#562">562</a>                         (<a href="../../../../org/archive/crawler/event/CrawlURIDispositionListener.html">CrawlURIDispositionListener</a>) it
<a name="563" href="#563">563</a>                             .next())
<a name="564" href="#564">564</a>                             .crawledURISuccessful(
<a name="565" href="#565">565</a>                         curi);
<a name="566" href="#566">566</a>                 }
<a name="567" href="#567">567</a>             }
<a name="568" href="#568">568</a>         }
<a name="569" href="#569">569</a>     }
<a name="570" href="#570">570</a> 
<a name="571" href="#571">571</a>     <em>/**<em>*</em></em>
<a name="572" href="#572">572</a> <em>     * Allows an external class to raise a CrawlURIDispostion</em>
<a name="573" href="#573">573</a> <em>     * crawledURINeedRetry event that will be broadcast to all listeners that</em>
<a name="574" href="#574">574</a> <em>     * have registered with the CrawlController.</em>
<a name="575" href="#575">575</a> <em>     *</em>
<a name="576" href="#576">576</a> <em>     * @param curi - The CrawlURI that will be sent with the event notification.</em>
<a name="577" href="#577">577</a> <em>     *</em>
<a name="578" href="#578">578</a> <em>     * @see CrawlURIDispositionListener#crawledURINeedRetry(CrawlURI)</em>
<a name="579" href="#579">579</a> <em>     */</em>
<a name="580" href="#580">580</a>     <strong>public</strong> <strong>void</strong> fireCrawledURINeedRetryEvent(<a href="../../../../org/archive/crawler/datamodel/CrawlURI.html">CrawlURI</a> curi) {
<a name="581" href="#581">581</a>         <strong>if</strong> (registeredCrawlURIDispositionListener != <strong>null</strong>) {
<a name="582" href="#582">582</a>             <em class="comment">// Then we'll just use that.</em>
<a name="583" href="#583">583</a>             registeredCrawlURIDispositionListener.crawledURINeedRetry(curi);
<a name="584" href="#584">584</a>             <strong>return</strong>;
<a name="585" href="#585">585</a>         }
<a name="586" href="#586">586</a>         
<a name="587" href="#587">587</a>         <em class="comment">// Go through the list.</em>
<a name="588" href="#588">588</a>         <strong>if</strong> (registeredCrawlURIDispositionListeners != <strong>null</strong>
<a name="589" href="#589">589</a>                 &amp;&amp; registeredCrawlURIDispositionListeners.size() > 0) {
<a name="590" href="#590">590</a>             <strong>for</strong> (Iterator i = registeredCrawlURIDispositionListeners.iterator();
<a name="591" href="#591">591</a>                     i.hasNext();) {
<a name="592" href="#592">592</a>                 ((<a href="../../../../org/archive/crawler/event/CrawlURIDispositionListener.html">CrawlURIDispositionListener</a>)i.next()).crawledURINeedRetry(curi);
<a name="593" href="#593">593</a>             }
<a name="594" href="#594">594</a>         }
<a name="595" href="#595">595</a>     }
<a name="596" href="#596">596</a> 
<a name="597" href="#597">597</a>     <em>/**<em>*</em></em>
<a name="598" href="#598">598</a> <em>     * Allows an external class to raise a CrawlURIDispostion</em>
<a name="599" href="#599">599</a> <em>     * crawledURIDisregard event that will be broadcast to all listeners that</em>
<a name="600" href="#600">600</a> <em>     * have registered with the CrawlController.</em>
<a name="601" href="#601">601</a> <em>     * </em>
<a name="602" href="#602">602</a> <em>     * @param curi -</em>
<a name="603" href="#603">603</a> <em>     *            The CrawlURI that will be sent with the event notification.</em>
<a name="604" href="#604">604</a> <em>     * </em>
<a name="605" href="#605">605</a> <em>     * @see CrawlURIDispositionListener#crawledURIDisregard(CrawlURI)</em>
<a name="606" href="#606">606</a> <em>     */</em>
<a name="607" href="#607">607</a>     <strong>public</strong> <strong>void</strong> fireCrawledURIDisregardEvent(<a href="../../../../org/archive/crawler/datamodel/CrawlURI.html">CrawlURI</a> curi) {
<a name="608" href="#608">608</a>         <strong>if</strong> (registeredCrawlURIDispositionListener != <strong>null</strong>) {
<a name="609" href="#609">609</a>             <em class="comment">// Then we'll just use that.</em>
<a name="610" href="#610">610</a>             registeredCrawlURIDispositionListener.crawledURIDisregard(curi);
<a name="611" href="#611">611</a>         } <strong>else</strong> {
<a name="612" href="#612">612</a>             <em class="comment">// Go through the list.</em>
<a name="613" href="#613">613</a>             <strong>if</strong> (registeredCrawlURIDispositionListeners != <strong>null</strong>
<a name="614" href="#614">614</a>                 &amp;&amp; registeredCrawlURIDispositionListeners.size() > 0) {
<a name="615" href="#615">615</a>                 Iterator it = registeredCrawlURIDispositionListeners.iterator();
<a name="616" href="#616">616</a>                 <strong>while</strong> (it.hasNext()) {
<a name="617" href="#617">617</a>                     (
<a name="618" href="#618">618</a>                         (<a href="../../../../org/archive/crawler/event/CrawlURIDispositionListener.html">CrawlURIDispositionListener</a>) it
<a name="619" href="#619">619</a>                             .next())
<a name="620" href="#620">620</a>                             .crawledURIDisregard(
<a name="621" href="#621">621</a>                         curi);
<a name="622" href="#622">622</a>                 }
<a name="623" href="#623">623</a>             }
<a name="624" href="#624">624</a>         }
<a name="625" href="#625">625</a>     }
<a name="626" href="#626">626</a> 
<a name="627" href="#627">627</a>     <em>/**<em>*</em></em>
<a name="628" href="#628">628</a> <em>     * Allows an external class to raise a CrawlURIDispostion crawledURIFailure event</em>
<a name="629" href="#629">629</a> <em>     * that will be broadcast to all listeners that have registered with the CrawlController.</em>
<a name="630" href="#630">630</a> <em>     *</em>
<a name="631" href="#631">631</a> <em>     * @param curi - The CrawlURI that will be sent with the event notification.</em>
<a name="632" href="#632">632</a> <em>     *</em>
<a name="633" href="#633">633</a> <em>     * @see CrawlURIDispositionListener#crawledURIFailure(CrawlURI)</em>
<a name="634" href="#634">634</a> <em>     */</em>
<a name="635" href="#635">635</a>     <strong>public</strong> <strong>void</strong> fireCrawledURIFailureEvent(<a href="../../../../org/archive/crawler/datamodel/CrawlURI.html">CrawlURI</a> curi) {
<a name="636" href="#636">636</a>         <strong>if</strong> (registeredCrawlURIDispositionListener != <strong>null</strong>) {
<a name="637" href="#637">637</a>             <em class="comment">// Then we'll just use that.</em>
<a name="638" href="#638">638</a>             registeredCrawlURIDispositionListener.crawledURIFailure(curi);
<a name="639" href="#639">639</a>         } <strong>else</strong> {
<a name="640" href="#640">640</a>             <em class="comment">// Go through the list.</em>
<a name="641" href="#641">641</a>             <strong>if</strong> (registeredCrawlURIDispositionListeners != <strong>null</strong>
<a name="642" href="#642">642</a>                 &amp;&amp; registeredCrawlURIDispositionListeners.size() > 0) {
<a name="643" href="#643">643</a>                 Iterator it = registeredCrawlURIDispositionListeners.iterator();
<a name="644" href="#644">644</a>                 <strong>while</strong> (it.hasNext()) {
<a name="645" href="#645">645</a>                     ((<a href="../../../../org/archive/crawler/event/CrawlURIDispositionListener.html">CrawlURIDispositionListener</a>)it.next())
<a name="646" href="#646">646</a>                         .crawledURIFailure(curi);
<a name="647" href="#647">647</a>                 }
<a name="648" href="#648">648</a>             }
<a name="649" href="#649">649</a>         }
<a name="650" href="#650">650</a>     }
<a name="651" href="#651">651</a> 
<a name="652" href="#652">652</a>     <strong>private</strong> <strong>void</strong> setupCrawlModules() throws FatalConfigurationException,
<a name="653" href="#653">653</a>              AttributeNotFoundException, MBeanException, ReflectionException {
<a name="654" href="#654">654</a>         <strong>if</strong> (scope == <strong>null</strong>) {
<a name="655" href="#655">655</a>             scope = (CrawlScope) order.getAttribute(CrawlScope.ATTR_NAME);
<a name="656" href="#656">656</a>         	scope.initialize(<strong>this</strong>);
<a name="657" href="#657">657</a>         }
<a name="658" href="#658">658</a>         <strong>try</strong> {
<a name="659" href="#659">659</a>             <strong>this</strong>.serverCache = <strong>new</strong> <a href="../../../../org/archive/crawler/datamodel/ServerCache.html">ServerCache</a>(<strong>this</strong>);
<a name="660" href="#660">660</a>         } <strong>catch</strong> (Exception e) {
<a name="661" href="#661">661</a>             <strong>throw</strong> <strong>new</strong> <a href="../../../../org/archive/crawler/framework/exceptions/FatalConfigurationException.html">FatalConfigurationException</a>(<span class="string">"Unable to"</span> +
<a name="662" href="#662">662</a>                <span class="string">" initialize frontier (Failed setup of ServerCache) "</span> + e);
<a name="663" href="#663">663</a>         }
<a name="664" href="#664">664</a>         
<a name="665" href="#665">665</a>         <strong>if</strong> (<strong>this</strong>.frontier == <strong>null</strong>) {
<a name="666" href="#666">666</a>             <strong>this</strong>.frontier = (Frontier)order.getAttribute(Frontier.ATTR_NAME);
<a name="667" href="#667">667</a>             <strong>try</strong> {
<a name="668" href="#668">668</a>                 frontier.initialize(<strong>this</strong>);
<a name="669" href="#669">669</a>                 frontier.pause(); <em class="comment">// Pause until begun</em>
<a name="670" href="#670">670</a>                 <em class="comment">// Run recovery if recoverPath points to a file (If it points</em>
<a name="671" href="#671">671</a>                 <em class="comment">// to a directory, its a checkpoint recovery).</em>
<a name="672" href="#672">672</a>                 <em class="comment">// TODO: make recover path relative to job root dir.</em>
<a name="673" href="#673">673</a>                 <strong>if</strong> (!isCheckpointRecover()) {
<a name="674" href="#674">674</a>                     runFrontierRecover((String)order.
<a name="675" href="#675">675</a>                         getAttribute(CrawlOrder.ATTR_RECOVER_PATH));
<a name="676" href="#676">676</a>                 }
<a name="677" href="#677">677</a>             } <strong>catch</strong> (IOException e) {
<a name="678" href="#678">678</a>                 <strong>throw</strong> <strong>new</strong> <a href="../../../../org/archive/crawler/framework/exceptions/FatalConfigurationException.html">FatalConfigurationException</a>(
<a name="679" href="#679">679</a>                     <span class="string">"unable to initialize frontier: "</span> + e);
<a name="680" href="#680">680</a>             }
<a name="681" href="#681">681</a>         }
<a name="682" href="#682">682</a> 
<a name="683" href="#683">683</a>         <em class="comment">// Setup processors</em>
<a name="684" href="#684">684</a>         <strong>if</strong> (processorChains == <strong>null</strong>) {
<a name="685" href="#685">685</a>             processorChains = <strong>new</strong> <a href="../../../../org/archive/crawler/framework/ProcessorChainList.html">ProcessorChainList</a>(order);
<a name="686" href="#686">686</a>         }
<a name="687" href="#687">687</a>     }
<a name="688" href="#688">688</a>     
<a name="689" href="#689">689</a>     <strong>protected</strong> <strong>void</strong> runFrontierRecover(String recoverPath)
<a name="690" href="#690">690</a>             throws AttributeNotFoundException, MBeanException,
<a name="691" href="#691">691</a>             ReflectionException, <a href="../../../../org/archive/crawler/framework/exceptions/FatalConfigurationException.html">FatalConfigurationException</a> {
<a name="692" href="#692">692</a>         <strong>if</strong> (recoverPath == <strong>null</strong> || recoverPath.length() &lt;= 0) {
<a name="693" href="#693">693</a>             <strong>return</strong>;
<a name="694" href="#694">694</a>         }
<a name="695" href="#695">695</a>         File f = <strong>new</strong> File(recoverPath);
<a name="696" href="#696">696</a>         <strong>if</strong> (!f.exists()) {
<a name="697" href="#697">697</a>             LOGGER.severe(<span class="string">"Recover file does not exist "</