Heritrix3.x主配置文件(crawler-beans.cxml)详解

<?xml version="1.0" encoding="UTF-8"?>
<!--
  HERITRIX 3 抓取工作配置文件
 
   This is a relatively minimal configuration suitable for many crawls.
   这是一个相对来说最简化的配置，它可以适用于大部分抓取。
   Commented-out beans and properties are provided as an example; values
   shown in comments reflect the actual defaults which are in effect
   if not otherwise specified specification. (To change from the default
   behavior, uncomment AND alter the shown values.)   　　

   实际上，如果没有其它的更改，添加在注释中的 beans和它的属性以及属性的值已经作为默认值提供给Heritrix使用，你只需要取消

相关的注释并更改其中的值就可以改变默认的抓取行为

 -->
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
 
 <context:annotation-config/>

<!--
  OVERRIDES
   Values elsewhere in the configuration may be replaced ('overridden')
   by a Properties map declared in a PropertiesOverrideConfigurer,
   using a dotted-bean-path to address individual bean properties.
   This allows us to collect a few of the most-often changed values
   in an easy-to-edit format here at the beginning of the model
   configuration.    

 -->
 <!-- overrides from a text property list -->
 <bean id="simpleOverrides" class="org.springframework.beans.factory.config.PropertyOverrideConfigurer">
  <property name="properties">
   <value>
# This Properties map is specified in the Java 'property list' text format
# http://java.sun.com/javase/6/docs/api/java/util/Properties.html#load%28java.io.Reader%29

metadata.operatorContactUrl=http://127.0.0.1/
metadata.jobName=basic
metadata.description=Basic crawl starting with useful defaults

##..more?..##
   </value>
  </property>
 </bean>

 <!-- overrides from declared <prop> elements, more easily allowing
      multiline values or even declared beans -->
 <bean id="longerOverrides" class="org.springframework.beans.factory.config.PropertyOverrideConfigurer">
  <property name="properties">
   <props>
    <prop key="seeds.textSource.value">

# URLS HERE

#此处填写抓取的种子地址,一行一个。

http://example.example

    </prop>
   </props>
  </property>
 </bean>

 <!-- CRAWL METADATA: including identification of crawler/operator  设置网络蜘蛛的头信息，可以参考各类网络spider蜘蛛User-Agent标识和heritrix3 伪装成GOOGLE进行爬取 -->
 <bean id="metadata" class="org.archive.modules.CrawlMetadata" autowire="byName">
       <property name="operatorContactUrl" value="[see override above]"/>
       <property name="jobName" value="[see override above]"/>
       <property name="description" value="[see override above]"/>
  <!-- <property name="robotsPolicyName" value="obey"/> -->
  <!-- <property name="operator" value=""/> -->
  <!-- <property name="operatorFrom" value=""/> -->
  <!-- <property name="organization" value=""/> -->
  <!-- <property name="audience" value=""/> -->
  <!-- <property name="userAgentTemplate"
         value="Mozilla/5.0 (compatible; heritrix/@VERSION@ +@OPERATOR_CONTACT_URL@)"/> -->
       
 </bean>
 
 <!-- SEEDS: crawl starting points
      ConfigString allows simple, inline specification of a moderate
      number of seeds; see below comment for example of using an
      arbitrarily-large external file. -->
 <bean id="seeds" class="org.archive.modules.seeds.TextSeedModule">
     <property name="textSource">
      <bean class="org.archive.spring.ConfigString">
       <property name="value">
        <value>
# [see override above]
        </value>
       </property>
      </bean>
     </property>
<!-- <property name='sourceTagSeeds' value='false'/> -->
<!-- <property name='blockAwaitingSeedLines' value='-1'/> -->
 </bean>
 
 <!-- SEEDS ALTERNATE APPROACH: specifying external seeds.txt file in
      the job directory, similar to the H1 approach.
      Use either the above, or this, but not both. -->
 <!--
 <bean id="seeds" class="org.archive.modules.seeds.TextSeedModule">
  <property name="textSource">
   <bean class="org.archive.spring.ConfigFile">
    <property name="path" value="seeds.txt" />
   </bean>
  </property>
  <property name='sourceTagSeeds' value='false'/>
  <property name='blockAwaitingSeedLines' value='-1'/>
 </bean>
  -->
 
 <bean id="acceptSurts" class="org.archive.modules.deciderules.surt.SurtPrefixedDecideRule">
  <!-- <property name="decision" value="ACCEPT"/> -->
  <!-- <property name="seedsAsSurtPrefixes" value="true" /> -->
  <!-- <property name="alsoCheckVia" value="false" /> -->
  <!-- <property name="surtsSourceFile" value="" /> -->
  <!-- <property name="surtsDumpFile" value="${launchId}/surts.dump" /> -->
  <!-- <property name="surtsSource">
        <bean class="org.archive.spring.ConfigString">
         <property name="value">
          <value>
           # example.com
           # http://www.example.edu/path1/
           # +http://(org,example,
          </value>
         </property>
        </bean>
       </property> -->
 </bean>

 <!-- SCOPE: rules for which discovered URIs to crawl; order is very
      important because last decision returned other than 'NONE' wins. -->
 <bean id="scope" class="org.archive.modules.deciderules.DecideRuleSequence">
  <!-- <property name="logToFile" value="false" /> -->
  <property name="rules">
   <list>
    <!-- Begin by REJECTing all... -->
    <bean class="org.archive.modules.deciderules.RejectDecideRule" />
    <!-- ...then ACCEPT those within configured/seed-implied SURT prefixes... -->
    <ref bean="acceptSurts" />
    <!-- ...but REJECT those more than a configured link-hop-count from start... -->
    <bean class="org.archive.modules.deciderules.TooManyHopsDecideRule">
     <!-- <property name="maxHops" value="20" /> -->
    </bean>
    <!-- ...but ACCEPT those more than a configured link-hop-count from start... -->
    <bean class="org.archive.modules.deciderules.TransclusionDecideRule">
     <!-- <property name="maxTransHops" value="2" /> -->
     <!-- <property name="maxSpeculativeHops" value="1" /> -->
    </bean>
    <!-- ...but REJECT those from a configurable (initially empty) set of REJECT SURTs... -->
    <bean class="org.archive.modules.deciderules.surt.SurtPrefixedDecideRule">
          <property name="decision" value="REJECT"/>
          <property name="seedsAsSurtPrefixes" value="false"/>
          <property name="surtsDumpFile" value="${launchId}/negative-surts.dump" />
     <!-- <property name="surtsSource">
           <bean class="org.archive.spring.ConfigFile">
            <property name="path" value="negative-surts.txt" />
           </bean>
          </property> -->
    </bean>
    <!-- ...and REJECT those from a configurable (initially empty) set of URI regexes... -->
    <bean class="org.archive.modules.deciderules.MatchesListRegexDecideRule">
          <property name="decision" value="REJECT"/>
     <!-- <property name="listLogicalOr" value="true" /> -->
     <!-- <property name="regexList">
           <list>
           </list>
          </property> -->
    </bean>
    <!-- ...and REJECT those with suspicious repeating path-segments... -->
    <bean class="org.archive.modules.deciderules.PathologicalPathDecideRule">
     <!-- <property name="maxRepetitions" value="2" /> -->
    </bean>
    <!-- ...and REJECT those with more than threshold number of path-segments... -->
    <bean class="org.archive.modules.deciderules.TooManyPathSegmentsDecideRule">
     <!-- <property name="maxPathDepth" value="20" /> -->
    </bean>
    <!-- ...but always ACCEPT those marked as prerequisitee for another URI... -->
    <bean class="org.archive.modules.deciderules.PrerequisiteAcceptDecideRule">
    </bean>
    <!-- ...but always REJECT those with unsupported URI schemes -->
    <bean class="org.archive.modules.deciderules.SchemeNotInSetDecideRule">
    </bean>
   </list>
  </property>
 </bean>
 
 <!--
   PROCESSING CHAINS
    Much of the crawler's work is specified by the sequential
    application of swappable Processor modules. These Processors
    are collected into three 'chains'. The CandidateChain is applied
    to URIs being considered for inclusion, before a URI is enqueued
    for collection. The FetchChain is applied to URIs when their
    turn for collection comes up. The DispositionChain is applied
    after a URI is fetched and analyzed/link-extracted.
  -->
 
 <!-- CANDIDATE CHAIN -->
 <!-- first, processors are declared as top-level named beans -->
 <bean id="candidateScoper" class="org.archive.crawler.prefetch.CandidateScoper">
 </bean>
 <bean id="preparer" class="org.archive.crawler.prefetch.FrontierPreparer">
  <!-- <property name="preferenceDepthHops" value="-1" /> -->
  <!-- <property name="preferenceEmbedHops" value="1" /> -->
  <!-- <property name="canonicalizationPolicy">
        <ref bean="canonicalizationPolicy" />
       </property> -->
  <!-- <property name="queueAssignmentPolicy">
        <ref bean="queueAssignmentPolicy" />
       </property> -->
  <!-- <property name="uriPrecedencePolicy">
        <ref bean="uriPrecedencePolicy" />
       </property> -->
  <!-- <property name="costAssignmentPolicy">
        <ref bean="costAssignmentPolicy" />
       </property> -->
 </bean>
 <!-- now, processors are assembled into ordered CandidateChain bean -->
 <bean id="candidateProcessors" class="org.archive.modules.CandidateChain">
  <property name="processors">
   <list>
    <!-- apply scoping rules to each individual candidate URI... -->
    <ref bean="candidateScoper"/>
    <!-- ...then prepare those ACCEPTed to be enqueued to frontier. -->
    <ref bean="preparer"/>
   </list>
  </property>
 </bean>
 
 <!-- FETCH CHAIN -->
 <!-- first, processors are declared as top-level named beans -->
 <bean id="preselector" class="org.archive.crawler.prefetch.Preselector">
  <!-- <property name="recheckScope" value="false" /> -->
  <!-- <property name="blockAll" value="false" /> -->
  <!-- <property name="blockByRegex" value="" /> -->
  <!-- <property name="allowByRegex" value="" /> -->
 </bean>
 <bean id="preconditions" class="org.archive.crawler.prefetch.PreconditionEnforcer">
  <!-- <property name="ipValidityDurationSeconds" value="21600" /> -->
  <!-- <property name="robotsValidityDurationSeconds" value="86400" /> -->
  <!-- <property name="calculateRobotsOnly" value="false" /> -->
 </bean>
 <bean id="fetchDns" class="org.archive.modules.fetcher.FetchDNS">
  <!-- <property name="acceptNonDnsResolves" value="false" /> -->
  <!-- <property name="digestContent" value="true" /> -->
  <!-- <property name="digestAlgorithm" value="sha1" /> -->
 </bean>
 <!-- <bean id="fetchWhois" class="org.archive.modules.fetcher.FetchWhois">
       <property name="specialQueryTemplates">
        <map>
         <entry key="whois.verisign-grs.com" value="domain %s" />
         <entry key="whois.arin.net" value="z + %s" />
         <entry key="whois.denic.de" value="-T dn %s" />
        </map>
       </property>
      </bean> -->
 <bean id="fetchHttp" class="org.archive.modules.fetcher.FetchHTTP">
  <!-- <property name="useHTTP11" value="false" /> -->
  <!-- <property name="maxLengthBytes" value="0" /> -->
  <!-- <property name="timeoutSeconds" value="1200" /> -->
  <!-- <property name="maxFetchKBSec" value="0" /> -->
  <!-- <property name="defaultEncoding" value="big5" /> -->
  <!-- <property name="shouldFetchBodyRule">
        <bean class="org.archive.modules.deciderules.AcceptDecideRule"/>
       </property> -->
  <!-- <property name="soTimeoutMs" value="20000" /> -->
  <!-- <property name="sendIfModifiedSince" value="true" /> -->
  <!-- <property name="sendIfNoneMatch" value="true" /> -->
  <!-- <property name="sendConnectionClose" value="true" /> -->
  <!-- <property name="sendReferer" value="true" /> -->
  <!-- <property name="sendRange" value="false" /> -->
  <!-- <property name="ignoreCookies" value="false" /> -->
  <!-- <property name="sslTrustLevel" value="OPEN" /> -->
  <!-- <property name="acceptHeaders">
        <list>
         <value>Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8</value>
        </list>
       </property>
  -->
  <!-- <property name="httpBindAddress" value="" /> -->
  <!-- <property name="httpProxyHost" value="" /> -->
  <!-- <property name="httpProxyPort" value="0" /> -->
  <!-- <property name="httpProxyUser" value="" /> -->
  <!-- <property name="httpProxyPassword" value="" /> -->
  <!-- <property name="digestContent" value="true" /> -->
  <!-- <property name="digestAlgorithm" value="sha1" /> -->
 </bean>
 <bean id="extractorHttp" class="org.archive.modules.extractor.ExtractorHTTP">
 </bean>
 <bean id="extractorHtml" class="org.archive.modules.extractor.ExtractorHTML">
  <!-- <property name="extractJavascript" value="true" /> -->
  <!-- <property name="extractValueAttributes" value="true" /> -->
  <!-- <property name="ignoreFormActionUrls" value="false" /> -->
  <!-- <property name="extractOnlyFormGets" value="true" /> -->
  <!-- <property name="treatFramesAsEmbedLinks" value="true" /> -->
  <!-- <property name="ignoreUnexpectedHtml" value="true" /> -->
  <!-- <property name="maxElementLength" value="1024" /> -->
  <!-- <property name="maxAttributeNameLength" value="1024" /> -->
  <!-- <property name="maxAttributeValueLength" value="16384" /> -->
 </bean>
 <bean id="extractorCss" class="org.archive.modules.extractor.ExtractorCSS">
 </bean>
 <bean id="extractorJs" class="org.archive.modules.extractor.ExtractorJS">
 </bean>
 <bean id="extractorSwf" class="org.archive.modules.extractor.ExtractorSWF">
 </bean>    
 <!-- now, processors are assembled into ordered FetchChain bean -->
 <bean id="fetchProcessors" class="org.archive.modules.FetchChain">
  <property name="processors">
   <list>
    <!-- re-check scope, if so enabled... -->
    <ref bean="preselector"/>
    <!-- ...then verify or trigger prerequisite URIs fetched, allow crawling... -->
    <ref bean="preconditions"/>
    <!-- ...fetch if DNS URI... -->
    <ref bean="fetchDns"/>
    <!-- <ref bean="fetchWhois"/> -->
    <!-- ...fetch if HTTP URI... -->
    <ref bean="fetchHttp"/>
    <!-- ...extract outlinks from HTTP headers... -->
    <ref bean="extractorHttp"/>
    <!-- ...extract outlinks from HTML content... -->
    <ref bean="extractorHtml"/>
    <!-- ...extract outlinks from CSS content... -->
    <ref bean="extractorCss"/>
    <!-- ...extract outlinks from Javascript content... -->
    <ref bean="extractorJs"/>
    <!-- ...extract outlinks from Flash content... -->
    <ref bean="extractorSwf"/>
   </list>
  </property>
 </bean>
 
 <!-- DISPOSITION CHAIN -->
 <!-- first, processors are declared as top-level named beans  -->
 <bean id="warcWriter" class="org.archive.modules.writer.MirrorWriterProcessor">
  <!-- <property name="compress" value="true" /> -->
  <!-- <property name="prefix" value="IAH" /> -->
  <!-- <property name="suffix" value="${HOSTNAME}" /> -->
  <!-- <property name="maxFileSizeBytes" value="1000000000" /> -->
  <!-- <property name="poolMaxActive" value="1" /> -->
  <!-- <property name="MaxWaitForIdleMs" value="500" /> -->
  <!-- <property name="skipIdenticalDigests" value="false" /> -->
  <!-- <property name="maxTotalBytesToWrite" value="0" /> -->
  <!-- <property name="directory" value="${launchId}" /> -->
  <!-- <property name="storePaths">
        <list>
         <value>warcs</value>
        </list>
       </property> -->
  <!-- <property name="writeRequests" value="true" /> -->
  <!-- <property name="writeMetadata" value="true" /> -->
  <!-- <property name="writeRevisitForIdenticalDigests" value="true" /> -->
  <!-- <property name="writeRevisitForNotModified" value="true" /> -->
 </bean>
 <bean id="candidates" class="org.archive.crawler.postprocessor.CandidatesProcessor">
  <!-- <property name="seedsRedirectNewSeeds" value="true" /> -->
  <!-- <property name="processErrorOutlinks" value="false" /> -->
 </bean>
 <bean id="disposition" class="org.archive.crawler.postprocessor.DispositionProcessor">
  <!-- <property name="delayFactor" value="5.0" /> -->
  <!-- <property name="minDelayMs" value="3000" /> -->
  <!-- <property name="respectCrawlDelayUpToSeconds" value="300" /> -->
  <!-- <property name="maxDelayMs" value="30000" /> -->
  <!-- <property name="maxPerHostBandwidthUsageKbSec" value="0" /> -->
 </bean>
 <!-- <bean id="rescheduler" class="org.archive.crawler.postprocessor.ReschedulingProcessor">
       <property name="rescheduleDelaySeconds" value="-1" />
      </bean> -->
 <!-- now, processors are assembled into ordered DispositionChain bean -->
 <bean id="dispositionProcessors" class="org.archive.modules.DispositionChain">
  <property name="processors">
   <list>
    <!-- write to aggregate archival files... -->
    <ref bean="warcWriter"/>
    <!-- ...send each outlink candidate URI to CandidateChain,
         and enqueue those ACCEPTed to the frontier... -->
    <ref bean="candidates"/>
    <!-- ...then update stats, shared-structures, frontier decisions -->
    <ref bean="disposition"/>
    <!-- <ref bean="rescheduler" /> -->
   </list>
  </property>
 </bean>
 
 <!-- CRAWLCONTROLLER: Control interface, unifying context -->
 <bean id="crawlController"
   class="org.archive.crawler.framework.CrawlController">
  <!-- <property name="maxToeThreads" value="25" /> -->
  <!-- <property name="pauseAtStart" value="true" /> -->
  <!-- <property name="runWhileEmpty" value="false" /> -->
  <!-- <property name="recorderInBufferBytes" value="524288" /> -->
  <!-- <property name="recorderOutBufferBytes" value="16384" /> -->
  <!-- <property name="scratchDir" value="scratch" /> -->
 </bean>
 
 <!-- FRONTIER: Record of all URIs discovered and queued-for-collection -->
 <bean id="frontier"
   class="org.archive.crawler.frontier.BdbFrontier">
  <!-- <property name="queueTotalBudget" value="-1" /> -->
  <!-- <property name="balanceReplenishAmount" value="3000" /> -->
  <!-- <property name="errorPenaltyAmount" value="100" /> -->
  <!-- <property name="precedenceFloor" value="255" /> -->
  <!-- <property name="queuePrecedencePolicy">
        <bean class="org.archive.crawler.frontier.precedence.BaseQueuePrecedencePolicy" />
       </property> -->
  <!-- <property name="snoozeLongMs" value="300000" /> -->
  <!-- <property name="retryDelaySeconds" value="900" /> -->
  <!-- <property name="maxRetries" value="30" /> -->
  <!-- <property name="recoveryLogEnabled" value="true" /> -->
  <!-- <property name="maxOutlinks" value="6000" /> -->
  <!-- <property name="extractIndependently" value="false" /> -->
  <!-- <property name="outbound">
        <bean class="java.util.concurrent.ArrayBlockingQueue">
         <constructor-arg value="200"/>
         <constructor-arg value="true"/>
        </bean>
       </property> -->
  <!-- <property name="inbound">
        <bean class="java.util.concurrent.ArrayBlockingQueue">
         <constructor-arg value="40000"/>
         <constructor-arg value="true"/>
        </bean>
       </property> -->
  <!-- <property name="dumpPendingAtClose" value="false" /> -->
 </bean>
 
 <!-- URI UNIQ FILTER: Used by frontier to remember already-included URIs -->
 <bean id="uriUniqFilter"
   class="org.archive.crawler.util.BdbUriUniqFilter">
 </bean>
 
 <!--
   EXAMPLE SETTINGS OVERLAY SHEETS
   Sheets allow some settings to vary by context - usually by URI context,
   so that different sites or sections of sites can be treated differently.
   Here are some example Sheets for common purposes. The SheetOverlaysManager
   (below) automatically collects all Sheet instances declared among the
   original beans, but others can be added during the crawl via the scripting
   interface.
  -->

<!-- forceRetire: any URI to which this sheet's settings are applied
     will force its containing queue to 'retired' status. -->
<bean id='forceRetire' class='org.archive.spring.Sheet'>
 <property name='map'>
  <map>
   <entry key='disposition.forceRetire' value='true'/>
  </map>
 </property>
</bean>

<!-- smallBudget: any URI to which this sheet's settings are applied
     will give its containing queue small values for balanceReplenishAmount
     (causing it to have shorter 'active' periods while other queues are
     waiting) and queueTotalBudget (causing the queue to enter 'retired'
     status once that expenditure is reached by URI attempts and errors) -->
<bean id='smallBudget' class='org.archive.spring.Sheet'>
 <property name='map'>
  <map>
   <entry key='frontier.balanceReplenishAmount' value='20'/>
   <entry key='frontier.queueTotalBudget' value='100'/>
  </map>
 </property>
</bean>

<!-- veryPolite: any URI to which this sheet's settings are applied
     will cause its queue to take extra-long politeness snoozes -->
<bean id='veryPolite' class='org.archive.spring.Sheet'>
 <property name='map'>
  <map>
   <entry key='disposition.delayFactor' value='10'/>
   <entry key='disposition.minDelayMs' value='10000'/>
   <entry key='disposition.maxDelayMs' value='1000000'/>
   <entry key='disposition.respectCrawlDelayUpToSeconds' value='3600'/>
  </map>
 </property>
</bean>

<!-- highPrecedence: any URI to which this sheet's settings are applied
     will give its containing queue a slightly-higher than default
     queue precedence value. That queue will then be preferred over
     other queues for active crawling, never waiting behind lower-
     precedence queues. -->
<bean id='highPrecedence' class='org.archive.spring.Sheet'>
 <property name='map'>
  <map>
   <entry key='frontier.balanceReplenishAmount' value='20'/>
   <entry key='frontier.queueTotalBudget' value='100'/>
  </map>
 </property>
</bean>

<!--
   EXAMPLE SETTINGS OVERLAY SHEET-ASSOCIATION
   A SheetAssociation says certain URIs should have certain overlay Sheets
   applied. This example applies two sheets to URIs matching two SURT-prefixes.
   New associations may also be added mid-crawl using the scripting facility.
  -->

<!--
<bean class='org.archive.crawler.spring.SurtPrefixesSheetAssociation'>
 <property name='surtPrefixes'>
  <list>
   <value>http://(org,example,</value>
   <value>http://(com,example,www,)/</value>
  </list>
 </property>
 <property name='targetSheetNames'>
  <list>
   <value>veryPolite</value>
   <value>smallBudget</value>
  </list>
 </property>
</bean>
-->

 <!--
   OPTIONAL BUT RECOMMENDED BEANS
  -->
 
 <!-- ACTIONDIRECTORY: disk directory for mid-crawl operations
      Running job will watch directory for new files with URIs,
      scripts, and other data to be processed during a crawl. -->
 <bean id="actionDirectory" class="org.archive.crawler.framework.ActionDirectory">
  <!-- <property name="actionDir" value="action" /> -->
  <!-- <property name="doneDir" value="${launchId}/actions-done" /> -->
  <!-- <property name="initialDelaySeconds" value="10" /> -->
  <!-- <property name="delaySeconds" value="30" /> -->
 </bean>
 
 <!--  CRAWLLIMITENFORCER: stops crawl when it reaches configured limits -->
 <bean id="crawlLimiter" class="org.archive.crawler.framework.CrawlLimitEnforcer">
  <!-- <property name="maxBytesDownload" value="0" /> -->
  <!-- <property name="maxDocumentsDownload" value="0" /> -->
  <!-- <property name="maxTimeSeconds" value="0" /> -->
 </bean>
 
 <!-- CHECKPOINTSERVICE: checkpointing assistance -->
 <bean id="checkpointService"
   class="org.archive.crawler.framework.CheckpointService">
  <!-- <property name="checkpointIntervalMinutes" value="-1"/> -->
  <!-- <property name="checkpointsDir" value="checkpoints"/> -->
 </bean>
 
 <!--
   OPTIONAL BEANS
    Uncomment and expand as needed, or if non-default alternate
    implementations are preferred.
  -->
 
 <!-- CANONICALIZATION POLICY -->
 <!--
 <bean id="canonicalizationPolicy"
   class="org.archive.modules.canonicalize.RulesCanonicalizationPolicy">
   <property name="rules">
    <list>
     <bean class="org.archive.modules.canonicalize.LowercaseRule" />
     <bean class="org.archive.modules.canonicalize.StripUserinfoRule" />
     <bean class="org.archive.modules.canonicalize.StripWWWNRule" />
     <bean class="org.archive.modules.canonicalize.StripSessionIDs" />
     <bean class="org.archive.modules.canonicalize.StripSessionCFIDs" />
     <bean class="org.archive.modules.canonicalize.FixupQueryString" />
    </list>
  </property>
 </bean>
 -->
 

 <!-- QUEUE ASSIGNMENT POLICY -->
 <!--
 <bean id="queueAssignmentPolicy"
   class="org.archive.crawler.frontier.SurtAuthorityQueueAssignmentPolicy">
  <property name="forceQueueAssignment" value="" />
  <property name="deferToPrevious" value="true" />
  <property name="parallelQueues" value="1" />
 </bean>
 -->
 
 <!-- URI PRECEDENCE POLICY -->
 <!--
 <bean id="uriPrecedencePolicy"
   class="org.archive.crawler.frontier.precedence.CostUriPrecedencePolicy">
 </bean>
 -->
 
 <!-- COST ASSIGNMENT POLICY -->
 <!--
 <bean id="costAssignmentPolicy"
   class="org.archive.crawler.frontier.UnitCostAssignmentPolicy">
 </bean>
 -->
 
 <!-- CREDENTIAL STORE: HTTP authentication or FORM POST credentials -->
 <!--
 <bean id="credentialStore"
   class="org.archive.modules.credential.CredentialStore">
 </bean>
 -->
 
 <!-- DISK SPACE MONITOR:
      Pauses the crawl if disk space at monitored paths falls below minimum threshold -->
 <!--
 <bean id="diskSpaceMonitor" class="org.archive.crawler.monitor.DiskSpaceMonitor">
   <property name="pauseThresholdMiB" value="500" />
   <property name="monitorConfigPaths" value="true" />
   <property name="monitorPaths">
     <list>
       <value>PATH</value>
     </list>
   </property>
 </bean>
 -->
 
 <!--
   REQUIRED STANDARD BEANS
    It will be very rare to replace or reconfigure the following beans.
  -->

 <!-- STATISTICSTRACKER: standard stats/reporting collector -->
 <bean id="statisticsTracker"
   class="org.archive.crawler.reporting.StatisticsTracker" autowire="byName">
  <!-- <property name="reports">
        <list>
         <bean id="crawlSummaryReport" class="org.archive.crawler.reporting.CrawlSummaryReport" />
         <bean id="seedsReport" class="org.archive.crawler.reporting.SeedsReport" />
         <bean id="hostsReport" class="org.archive.crawler.reporting.HostsReport" />
         <bean id="sourceTagsReport" class="org.archive.crawler.reporting.SourceTagsReport" />
         <bean id="mimetypesReport" class="org.archive.crawler.reporting.MimetypesReport" />
         <bean id="responseCodeReport" class="org.archive.crawler.reporting.ResponseCodeReport" />
         <bean id="processorsReport" class="org.archive.crawler.reporting.ProcessorsReport" />
         <bean id="frontierSummaryReport" class="org.archive.crawler.reporting.FrontierSummaryReport" />
         <bean id="frontierNonemptyReport" class="org.archive.crawler.reporting.FrontierNonemptyReport" />
         <bean id="toeThreadsReport" class="org.archive.crawler.reporting.ToeThreadsReport" />
        </list>
       </property> -->
  <!-- <property name="reportsDir" value="${launchId}/reports" /> -->
  <!-- <property name="liveHostReportSize" value="20" /> -->
  <!-- <property name="intervalSeconds" value="20" /> -->
  <!-- <property name="keepSnapshotsCount" value="5" /> -->
  <!-- <property name="liveHostReportSize" value="20" /> -->
 </bean>
 
 <!-- CRAWLERLOGGERMODULE: shared logging facility -->
 <bean id="loggerModule"
   class="org.archive.crawler.reporting.CrawlerLoggerModule">
  <!-- <property name="path" value="${launchId}/logs" /> -->
  <!-- <property name="crawlLogPath" value="crawl.log" /> -->
  <!-- <property name="alertsLogPath" value="alerts.log" /> -->
  <!-- <property name="progressLogPath" value="progress-statistics.log" /> -->
  <!-- <property name="uriErrorsLogPath" value="uri-errors.log" /> -->
  <!-- <property name="runtimeErrorsLogPath" value="runtime-errors.log" /> -->
  <!-- <property name="nonfatalErrorsLogPath" value="nonfatal-errors.log" /> -->
  <!-- <property name="logExtraInfo" value="false" /> -->
 </bean>
 
 <!-- SHEETOVERLAYMANAGER: manager of sheets of contextual overlays
      Autowired to include any SheetForSurtPrefix or
      SheetForDecideRuled beans -->
 <bean id="sheetOverlaysManager" autowire="byType"
   class="org.archive.crawler.spring.SheetOverlaysManager">
 </bean>

 <!-- BDBMODULE: shared BDB-JE disk persistence manager -->
 <bean id="bdb"
  class="org.archive.bdb.BdbModule">
  <!-- <property name="dir" value="state" /> -->
  <!-- if neither cachePercent or cacheSize are specified (the default), bdb
       uses its own default of 60% -->
  <!-- <property name="cachePercent" value="0" /> -->
  <!-- <property name="cacheSize" value="0" /> -->
  <!-- <property name="useSharedCache" value="true" /> -->
  <!-- <property name="expectedConcurrency" value="25" /> -->
 </bean>
 
 <!-- BDBCOOKIESTORAGE: disk-based cookie storage for FetchHTTP -->
 <bean id="cookieStorage"
   class="org.archive.modules.fetcher.BdbCookieStorage">
  <!-- <property name="cookiesLoadFile"><null/></property> -->
  <!-- <property name="cookiesSaveFile"><null/></property> -->
  <!-- <property name="bdb">
        <ref bean="bdb"/>
       </property> -->
 </bean>
 
 <!-- SERVERCACHE: shared cache of server/host info -->
 <bean id="serverCache"
   class="org.archive.modules.net.BdbServerCache">
  <!-- <property name="bdb">
        <ref bean="bdb"/>
       </property> -->
 </bean>

 <!-- CONFIG PATH CONFIGURER: required helper making crawl paths relative
      to crawler-beans.cxml file, and tracking crawl files for web UI -->
 <bean id="configPathConfigurer"
   class="org.archive.spring.ConfigPathConfigurer">
 </bean>
 
</beans>