crawlserver.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="250" href="#250">250</a>     		RobotsHonoringPolicy honoringPolicy =
<a name="251" href="#251">251</a>                 settingsHandler.getOrder().getRobotsHonoringPolicy();
<a name="252" href="#252">252</a>     		<strong>this</strong>.robots.honoringPolicy = honoringPolicy;
<a name="253" href="#253">253</a>     	}
<a name="254" href="#254">254</a>     }
<a name="255" href="#255">255</a> 
<a name="256" href="#256">256</a>     <em>/**<em>* Get the settings handler.</em></em>
<a name="257" href="#257">257</a> <em>     *</em>
<a name="258" href="#258">258</a> <em>     * @return the settings handler.</em>
<a name="259" href="#259">259</a> <em>     */</em>
<a name="260" href="#260">260</a>     <strong>public</strong> <a href="../../../../org/archive/crawler/settings/SettingsHandler.html">SettingsHandler</a> getSettingsHandler() {
<a name="261" href="#261">261</a>         <strong>return</strong> <strong>this</strong>.settingsHandler;
<a name="262" href="#262">262</a>     }
<a name="263" href="#263">263</a> 
<a name="264" href="#264">264</a>     <em>/**<em>* Get the settings object in effect for this server.</em></em>
<a name="265" href="#265">265</a> <em>     * @param curi</em>
<a name="266" href="#266">266</a> <em>     *</em>
<a name="267" href="#267">267</a> <em>     * @return the settings object in effect for this server.</em>
<a name="268" href="#268">268</a> <em>     * @throws URIException</em>
<a name="269" href="#269">269</a> <em>     */</em>
<a name="270" href="#270">270</a>     <strong>private</strong> <a href="../../../../org/archive/crawler/settings/CrawlerSettings.html">CrawlerSettings</a> getSettings(<a href="../../../../org/archive/crawler/datamodel/CandidateURI.html">CandidateURI</a> curi) {
<a name="271" href="#271">271</a>         <strong>try</strong> {
<a name="272" href="#272">272</a>             <strong>return</strong> <strong>this</strong>.settingsHandler.
<a name="273" href="#273">273</a>                 getSettings(curi.getUURI().getReferencedHost(),
<a name="274" href="#274">274</a>                     curi.getUURI());
<a name="275" href="#275">275</a>         } <strong>catch</strong> (URIException e) {
<a name="276" href="#276">276</a>             <strong>return</strong> <strong>null</strong>;
<a name="277" href="#277">277</a>         }
<a name="278" href="#278">278</a>     }
<a name="279" href="#279">279</a> 
<a name="280" href="#280">280</a>     <em>/**<em>* Set the settings handler to be used by this server.</em></em>
<a name="281" href="#281">281</a> <em>     *</em>
<a name="282" href="#282">282</a> <em>     * @param settingsHandler the settings handler to be used by this server.</em>
<a name="283" href="#283">283</a> <em>     */</em>
<a name="284" href="#284">284</a>     <strong>public</strong> <strong>void</strong> setSettingsHandler(<a href="../../../../org/archive/crawler/settings/SettingsHandler.html">SettingsHandler</a> settingsHandler) {
<a name="285" href="#285">285</a>         <strong>this</strong>.settingsHandler = settingsHandler;
<a name="286" href="#286">286</a>     }
<a name="287" href="#287">287</a> 
<a name="288" href="#288">288</a>     <strong>public</strong> <strong>void</strong> incrementConsecutiveConnectionErrors() {
<a name="289" href="#289">289</a>         <strong>this</strong>.consecutiveConnectionErrors++;
<a name="290" href="#290">290</a>     }
<a name="291" href="#291">291</a> 
<a name="292" href="#292">292</a>     <strong>public</strong> <strong>void</strong> resetConsecutiveConnectionErrors() {
<a name="293" href="#293">293</a>         <strong>this</strong>.consecutiveConnectionErrors = 0;
<a name="294" href="#294">294</a>     }
<a name="295" href="#295">295</a> 
<a name="296" href="#296">296</a>     <em>/**<em>*</em></em>
<a name="297" href="#297">297</a> <em>     * @return Credential avatars for this server.  Returns null if none.</em>
<a name="298" href="#298">298</a> <em>     */</em>
<a name="299" href="#299">299</a>     <strong>public</strong> Set getCredentialAvatars() {
<a name="300" href="#300">300</a>         <strong>return</strong> <strong>this</strong>.avatars;
<a name="301" href="#301">301</a>     }
<a name="302" href="#302">302</a> 
<a name="303" href="#303">303</a>     <em>/**<em>*</em></em>
<a name="304" href="#304">304</a> <em>     * @return True if there are avatars attached to this instance.</em>
<a name="305" href="#305">305</a> <em>     */</em>
<a name="306" href="#306">306</a>     <strong>public</strong> <strong>boolean</strong> hasCredentialAvatars() {
<a name="307" href="#307">307</a>         <strong>return</strong> <strong>this</strong>.avatars != <strong>null</strong> &amp;&amp; <strong>this</strong>.avatars.size() > 0;
<a name="308" href="#308">308</a>     }
<a name="309" href="#309">309</a> 
<a name="310" href="#310">310</a>     <em>/**<em>*</em></em>
<a name="311" href="#311">311</a> <em>     * Add an avatar.</em>
<a name="312" href="#312">312</a> <em>     *</em>
<a name="313" href="#313">313</a> <em>     * @param ca Credential avatar to add to set of avatars.</em>
<a name="314" href="#314">314</a> <em>     */</em>
<a name="315" href="#315">315</a>     <strong>public</strong> <strong>void</strong> addCredentialAvatar(<a href="../../../../org/archive/crawler/datamodel/credential/CredentialAvatar.html">CredentialAvatar</a> ca) {
<a name="316" href="#316">316</a>         <strong>if</strong> (<strong>this</strong>.avatars == <strong>null</strong>) {
<a name="317" href="#317">317</a>             <strong>this</strong>.avatars = <strong>new</strong> HashSet();
<a name="318" href="#318">318</a>         }
<a name="319" href="#319">319</a>         <strong>this</strong>.avatars.add(ca);
<a name="320" href="#320">320</a>     }
<a name="321" href="#321">321</a>     
<a name="322" href="#322">322</a> 	<em>/**<em>*</em></em>
<a name="323" href="#323">323</a> <em>     * If true then valid robots.txt information has been retrieved. If false</em>
<a name="324" href="#324">324</a> <em>     * either no attempt has been made to fetch robots.txt or the attempt</em>
<a name="325" href="#325">325</a> <em>     * failed.</em>
<a name="326" href="#326">326</a> <em>     *</em>
<a name="327" href="#327">327</a> <em>	 * @return Returns the validRobots.</em>
<a name="328" href="#328">328</a> <em>	 */</em>
<a name="329" href="#329">329</a> 	<strong>public</strong> <strong>boolean</strong> isValidRobots() {
<a name="330" href="#330">330</a> 		<strong>return</strong> validRobots;
<a name="331" href="#331">331</a> 	}
<a name="332" href="#332">332</a>     
<a name="333" href="#333">333</a>     <em>/**<em>*</em></em>
<a name="334" href="#334">334</a> <em>     * Get key to use doing lookup on server instances.</em>
<a name="335" href="#335">335</a> <em>     * @param cauri CandidateURI we're to get server key for.</em>
<a name="336" href="#336">336</a> <em>     * @return String to use as server key.</em>
<a name="337" href="#337">337</a> <em>     * @throws URIException</em>
<a name="338" href="#338">338</a> <em>     */</em>
<a name="339" href="#339">339</a> 	<strong>public</strong> <strong>static</strong> String getServerKey(<a href="../../../../org/archive/crawler/datamodel/CandidateURI.html">CandidateURI</a> cauri)
<a name="340" href="#340">340</a> 	throws URIException {
<a name="341" href="#341">341</a> 	    <em class="comment">// TODO: evaluate if this is really necessary -- why not </em>
<a name="342" href="#342">342</a> 	    <em class="comment">// make the server of a dns CandidateURI the looked-up domain,</em>
<a name="343" href="#343">343</a> 	    <em class="comment">// also simplifying FetchDNS?</em>
<a name="344" href="#344">344</a> 	    String key = cauri.getUURI().getAuthorityMinusUserinfo();
<a name="345" href="#345">345</a> 	    <strong>if</strong> (key == <strong>null</strong>) {
<a name="346" href="#346">346</a> 	        <em class="comment">// Fallback for cases where getAuthority() fails (eg 'dns:'.</em>
<a name="347" href="#347">347</a> 	        <em class="comment">// DNS UURIs have the 'domain' in the 'path' parameter, not</em>
<a name="348" href="#348">348</a> 	        <em class="comment">// in the authority).</em>
<a name="349" href="#349">349</a> 	        key = cauri.getUURI().getCurrentHierPath();
<a name="350" href="#350">350</a> 	        <strong>if</strong>(key != <strong>null</strong> &amp;&amp; !key.matches(<span class="string">"[-_&#47;&#47;w&#47;&#47;.:]+"</span>)) {
<a name="351" href="#351">351</a> 	            <em class="comment">// Not just word chars and dots and colons and dashes and</em>
<a name="352" href="#352">352</a> 	            <em class="comment">// underscores; throw away</em>
<a name="353" href="#353">353</a> 	            key = <strong>null</strong>;
<a name="354" href="#354">354</a> 	        }
<a name="355" href="#355">355</a> 	    }
<a name="356" href="#356">356</a> 	    <strong>if</strong> (key != <strong>null</strong> &amp;&amp;
<a name="357" href="#357">357</a> 	            cauri.getUURI().getScheme().equals(UURIFactory.HTTPS)) {
<a name="358" href="#358">358</a> 	        <em class="comment">// If https and no port specified, add default https port to</em>
<a name="359" href="#359">359</a> 	        <em class="comment">// distinuish https from http server without a port.</em>
<a name="360" href="#360">360</a> 	        <strong>if</strong> (!key.matches(<span class="string">".+:[0-9]+"</span>)) {
<a name="361" href="#361">361</a> 	            key += <span class="string">":"</span> + UURIFactory.HTTPS_PORT;
<a name="362" href="#362">362</a> 	        }
<a name="363" href="#363">363</a> 	    }
<a name="364" href="#364">364</a> 	    <strong>return</strong> key;
<a name="365" href="#365">365</a> 	}
<a name="366" href="#366">366</a> 
<a name="367" href="#367">367</a>     <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em>
<a name="368" href="#368">368</a> <em class="comment">     * @see org.archive.crawler.datamodel.CrawlSubstats.HasCrawlSubstats#getSubstats()</em>
<a name="369" href="#369">369</a> <em class="comment">     */</em>
<a name="370" href="#370">370</a>     <strong>public</strong> <a href="../../../../org/archive/crawler/datamodel/CrawlSubstats.html">CrawlSubstats</a> getSubstats() {
<a name="371" href="#371">371</a>         <strong>return</strong> substats;
<a name="372" href="#372">372</a>     }
<a name="373" href="#373">373</a> }
</pre>
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