Package org.apache.nutch.crawl

Examples of org.apache.nutch.crawl.CrawlDatum

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    conf.set(IndexingFilters.INDEXINGFILTER_ORDER, class1);

    IndexingFilters filters1 = new IndexingFilters(conf);
    NutchDocument fdoc1 = filters1.filter(new NutchDocument(),new ParseImpl("text",new ParseData(
      new ParseStatus(),"title",new Outlink[0],new Metadata())),new Text("http://www.example.com/"),
      new CrawlDatum(),new Inlinks());

    // add another index filter
    String class2 = "org.apache.nutch.indexer.metadata.MetadataIndexer";
    // set content metadata
    Metadata md = new Metadata();
    md.add("example","data");
    // set content metadata property defined in MetadataIndexer
    conf.set("index.content.md","example");
    // add MetadataIndxer filter
    conf.set(IndexingFilters.INDEXINGFILTER_ORDER, class1 + " " + class2);
    IndexingFilters filters2 = new IndexingFilters(conf);
    NutchDocument fdoc2 = filters2.filter(new NutchDocument(),new ParseImpl("text",new ParseData(
      new ParseStatus(),"title",new Outlink[0],md)),new Text("http://www.example.com/"),
      new CrawlDatum(),new Inlinks());
    Assert.assertEquals(fdoc1.getFieldNames().size(),fdoc2.getFieldNames().size());
  }
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//    if (verbose) {
//      LOGGER.setLevel(Level.FINE);
//    }
   
    ProtocolOutput out = http.getProtocolOutput(new Text(url), new CrawlDatum());
    Content content = out.getContent();
   
    System.out.println("Status: " + out.getStatus());
    if (content != null) {
      System.out.println("Content Type: " + content.getContentType());
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    int totalMiss = 0;
    int maxMiss = 0;
    int fetchCnt = 0;
    int changeCnt = 0;
    // initial fetchInterval is 10 days
    CrawlDatum p = new CrawlDatum(1, 3600 * 24 * 30, 1.0f);
    p.setFetchTime(0);
    LOG.info(p.toString());
    // let's move the timeline a couple of deltas
    for (int i = 0; i < 10000; i++) {
      if (lastModified + update < curTime) {
        //System.out.println("i=" + i + ", lastModified=" + lastModified + ", update=" + update + ", curTime=" + curTime);
        changed = true;
        changeCnt++;
        lastModified = curTime;
      }
      LOG.info(i + ". " + changed + "\twill fetch at " + (p.getFetchTime() / delta) + "\tinterval "
              + (p.getFetchInterval() / SECONDS_PER_DAY ) + " days" + "\t missed " + miss);
      if (p.getFetchTime() <= curTime) {
        fetchCnt++;
        fs.setFetchSchedule(new Text("http://www.example.com"), p,
                p.getFetchTime(), p.getModifiedTime(), curTime, lastModified,
                changed ? FetchSchedule.STATUS_MODIFIED : FetchSchedule.STATUS_NOTMODIFIED);
        LOG.info("\tfetched & adjusted: " + "\twill fetch at " + (p.getFetchTime() / delta) + "\tinterval "
                + (p.getFetchInterval() / SECONDS_PER_DAY ) + " days");
        if (!changed) miss++;
        if (miss > maxMiss) maxMiss = miss;
        changed = false;
        totalMiss += miss;
        miss = 0;
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    if (robotRules == null) {                     // cache miss
      URL redir = null;
      if (LOG.isTraceEnabled()) { LOG.trace("cache miss " + url); }
      try {
        Response response = ((HttpBase)http).getResponse(new URL(url, "/robots.txt"),
                                             new CrawlDatum(), true);
        // try one level of redirection ?
        if (response.getCode() == 301 || response.getCode() == 302) {
          String redirection = response.getHeader("Location");
          if (redirection == null) {
            // some versions of MS IIS are known to mangle this header
            redirection = response.getHeader("location");
          }
          if (redirection != null) {
            if (!redirection.startsWith("http")) {
              // RFC says it should be absolute, but apparently it isn't
              redir = new URL(url, redirection);
            } else {
              redir = new URL(redirection);
            }
           
            response = ((HttpBase)http).getResponse(redir, new CrawlDatum(), true);
          }
        }

        if (response.getCode() == 200)               // found rules: parse them
          robotRules =  parseRules(url.toString(), response.getContent(),
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   */
  private void fetchPage(String page, int expectedCode)
      throws Exception {
    URL url = new URL("http", "127.0.0.1", port, page);
    Response response = null;
    response = http.getResponse(url, new CrawlDatum(), true);

    int code = response.getCode();
    Assert.assertEquals("HTTP Status Code for " + url, expectedCode, code);
  }
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    IndexingFilters indexers = new IndexingFilters(conf);

    ProtocolFactory factory = new ProtocolFactory(conf);
    Protocol protocol = factory.getProtocol(url);
    CrawlDatum datum = new CrawlDatum();

    ProtocolOutput output = protocol.getProtocolOutput(new Text(url), datum);
   
    IndexWriters writers = new IndexWriters(getConf());
   
    if (!output.getStatus().isSuccess()) {
      System.out.println("Fetch failed with protocol status: " + output.getStatus());
      return 0;
    }
        
    Content content = output.getContent();

    if (content == null) {
      System.out.println("No content for " + url);
      return 0;
    }

    contentType = content.getContentType();

    if (contentType == null) {
      return -1;
    }

    // store the guessed content type in the crawldatum
    datum.getMetaData().put(new Text(Metadata.CONTENT_TYPE), new Text(contentType));

    if (ParseSegment.isTruncated(content)) {
      LOG.warn("Content is truncated, parse may fail!");
    }
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      urlString = "file:" + sampleDir + fileSeparator + sampleFiles[i];
      urlString = urlString.replace('\\', '/');

      protocol = new ProtocolFactory(conf).getProtocol(urlString);
      content = protocol.getProtocolOutput(new Text(urlString),
          new CrawlDatum()).getContent();

      parseResult = new ParseUtil(conf).parseByExtensionId("feed", content);

      Assert.assertEquals(3, parseResult.size());
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      if (LOG.isTraceEnabled())
        LOG.trace("cache miss " + url);

      try {
        Text robotsUrl = new Text(new URL(url, "/robots.txt").toString());
        ProtocolOutput output = ((Ftp)ftp).getProtocolOutput(robotsUrl, new CrawlDatum());
        ProtocolStatus status = output.getStatus();

        if (status.getCode() == ProtocolStatus.SUCCESS) {
          robotRules =  parseRules(url.toString(), output.getContent().getContent(),
                                  CONTENT_TYPE, agentNames);
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  @Before
  public void setUp() throws Exception {
    conf = NutchConfiguration.create();
    parse = new ParseImpl();
    url = new Text("http://nutch.apache.org/index.html");
    crawlDatum = new CrawlDatum();
    inlinks = new Inlinks();
    filter = new StaticFieldIndexer();
  }
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    Metadata metaData = new Metadata();
    metaData.add("Language", "en/us");
    ParseData parseData = new ParseData(ParseStatus.STATUS_SUCCESS, title, outlinks, metaData);
    ParseImpl parse = new ParseImpl("this is a sample foo bar page. hope you enjoy it.", parseData);

    CrawlDatum crawlDatum = new CrawlDatum();
    crawlDatum.setFetchTime(100L);

    Inlinks inlinks = new Inlinks();

    try {
      filter.filter(doc, parse, new Text("http://nutch.apache.org/index.html"), crawlDatum, inlinks);
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Related Classes of org.apache.nutch.crawl.CrawlDatum

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  • com.atlantbh.nutch.index.alternativedataflow.flow.CsvDataFlowTest
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  • com.flaptor.hounder.crawler.Nutch9Fetcher$NutchSegment$SegmentIterator
  • org.apache.nutch.analysis.lang.LanguageIdentifier
  • org.apache.nutch.crawl.AdaptiveFetchSchedule
  • org.apache.nutch.crawl.DeduplicationJob$DedupReducer
  • org.apache.nutch.crawl.DeduplicationJob$StatusUpdateReducer
  • org.apache.nutch.crawl.MimeAdaptiveFetchSchedule
  • org.apache.nutch.crawl.TestCrawlDbStates
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