Package org.apache.nutch.storage

Examples of org.apache.nutch.storage.WebPage

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      ftp.setMaxContentLength(maxContentLength);

    // set log level
    // LOG.setLevel(Level.parse((new String(logLevel)).toUpperCase()));

    Content content = ftp.getProtocolOutput(urlString, new WebPage())
        .getContent();

    System.err.println("Content-Type: " + content.getContentType());
    System.err.println("Content-Length: "
        + content.getMetadata().get(Response.CONTENT_LENGTH));
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    Configuration conf = NutchConfiguration.create();
    conf.setBoolean("anchorIndexingFilter.deduplicate", true);
    AnchorIndexingFilter filter = new AnchorIndexingFilter();
    filter.setConf(conf);
    NutchDocument doc = new NutchDocument();
    WebPage page = new WebPage();
    page.putToInlinks(new Utf8("http://example1.com/"), new Utf8("cool site"));
    page.putToInlinks(new Utf8("http://example2.com/"), new Utf8("cool site"));
    page.putToInlinks(new Utf8("http://example3.com/"), new Utf8("fun site"));
    filter.filter(doc, "http://myurldoesnotmatter.com/", page);
   
    assertTrue("test if there is an anchor at all", doc.getFieldNames().contains("anchor"));
   
    assertEquals("test dedup, we expect 2", 2, doc.getFieldValues("anchor").size());
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    Result<String, WebPage> result = datastore.execute(query);
    boolean found = false;
    // should happen only once
    while (result.next()) {
      WebPage page = result.get();
      String skey = result.getKey();
      // we should not get to this point but nevermind
      if (page == null || skey == null)
        break;
      found = true;
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  @Override
  protected void reduce(UrlWithScore key, Iterable<NutchWritable> values,
      Context context) throws IOException, InterruptedException {
    String keyUrl = key.getUrl().toString();

    WebPage page = null;
    inlinkedScoreData.clear();
   
    for (NutchWritable nutchWritable : values) {
      Writable val = nutchWritable.get();
      if (val instanceof WebPageWritable) {
        page = ((WebPageWritable) val).getWebPage();
      } else {
        inlinkedScoreData.add((ScoreDatum) val);
        if (inlinkedScoreData.size() >= maxLinks) {
          LOG.info("Limit reached, skipping further inlinks for " + keyUrl);
          break;
        }
      }
    }
    String url;
    try {
      url = TableUtil.unreverseUrl(keyUrl);
    } catch (Exception e) {
      // this can happen because a newly discovered malformed link
      // may slip by url filters
      // TODO: Find a better solution
      return;
    }

    if (page == null) { // new row
      if (!additionsAllowed) {
        return;
      }
      page = new WebPage();
      schedule.initializeSchedule(url, page);
      page.setStatus(CrawlStatus.STATUS_UNFETCHED);
      try {
        scoringFilters.initialScore(url, page);
      } catch (ScoringFilterException e) {
        page.setScore(0.0f);
      }
    } else {
      byte status = (byte)page.getStatus();
      switch (status) {
      case CrawlStatus.STATUS_FETCHED:         // succesful fetch
      case CrawlStatus.STATUS_REDIR_TEMP:      // successful fetch, redirected
      case CrawlStatus.STATUS_REDIR_PERM:
      case CrawlStatus.STATUS_NOTMODIFIED:     // successful fetch, notmodified
        int modified = FetchSchedule.STATUS_UNKNOWN;
        if (status == CrawlStatus.STATUS_NOTMODIFIED) {
          modified = FetchSchedule.STATUS_NOTMODIFIED;
        }
        ByteBuffer prevSig = page.getPrevSignature();
        ByteBuffer signature = page.getSignature();
        if (prevSig != null && signature != null) {
          if (SignatureComparator.compare(prevSig.array(), signature.array()) != 0) {
            modified = FetchSchedule.STATUS_MODIFIED;
          } else {
            modified = FetchSchedule.STATUS_NOTMODIFIED;
          }
        }
        long fetchTime = page.getFetchTime();
        long prevFetchTime = page.getPrevFetchTime();
        long modifiedTime = page.getModifiedTime();

        schedule.setFetchSchedule(url, page, prevFetchTime, 0L,
            fetchTime, modifiedTime, modified);
        if (maxInterval < page.getFetchInterval())
          schedule.forceRefetch(url, page, false);
        break;
      case CrawlStatus.STATUS_RETRY:
        schedule.setPageRetrySchedule(url, page, 0L, 0L, page.getFetchTime());
        if (page.getRetriesSinceFetch() < retryMax) {
          page.setStatus(CrawlStatus.STATUS_UNFETCHED);
        } else {
          page.setStatus(CrawlStatus.STATUS_GONE);
        }
        break;
      case CrawlStatus.STATUS_GONE:
        schedule.setPageGoneSchedule(url, page, 0L, 0L, page.getFetchTime());
        break;
      }
    }

    if (page.getInlinks() != null) {
      page.getInlinks().clear();
    }
    for (ScoreDatum inlink : inlinkedScoreData) {
      page.putToInlinks(new Utf8(inlink.getUrl()), new Utf8(inlink.getAnchor()));
    }

    // Distance calculation.
    // Retrieve smallest distance from all inlinks distances
    // Calculate new distance for current page: smallest inlink distance plus 1.
    // If the new distance is smaller than old one (or if old did not exist yet),
    // write it to the page.
    int smallestDist=Integer.MAX_VALUE;
    for (ScoreDatum inlink : inlinkedScoreData) {
      int inlinkDist = inlink.getDistance();
      if (inlinkDist < smallestDist) {
        smallestDist=inlinkDist;
      }
      page.putToInlinks(new Utf8(inlink.getUrl()), new Utf8(inlink.getAnchor()));
    }
    if (smallestDist != Integer.MAX_VALUE) {
      int oldDistance=Integer.MAX_VALUE;
      Utf8 oldDistUtf8 = page.getFromMarkers(DbUpdaterJob.DISTANCE);
      if (oldDistUtf8 != null)oldDistance=Integer.parseInt(oldDistUtf8.toString());
      int newDistance = smallestDist+1;
      if (newDistance < oldDistance) {
        page.putToMarkers(DbUpdaterJob.DISTANCE, new Utf8(Integer.toString(newDistance)));
      }
    }

    try {
      scoringFilters.updateScore(url, page, inlinkedScoreData);
    } catch (ScoringFilterException e) {
      LOG.warn("Scoring filters failed with exception " +
                StringUtils.stringifyException(e));
    }

    // clear markers
    // But only delete when they exist. This is much faster for the underlying
    // store. The markers are on the input anyway.
    if (page.getFromMetadata(FetcherJob.REDIRECT_DISCOVERED) != null) {
      page.removeFromMetadata(FetcherJob.REDIRECT_DISCOVERED);
    }
    Mark.GENERATE_MARK.removeMarkIfExist(page);
    Mark.FETCH_MARK.removeMarkIfExist(page);
    Utf8 parse_mark = Mark.PARSE_MARK.checkMark(page);
    if (parse_mark != null) {
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      }
      if (url == null)
        return;

      String reversedUrl = TableUtil.reverseUrl(url);
      WebPage row = new WebPage();
      row.setFetchTime(curTime);
      row.setFetchInterval(customInterval);

      // now add the metadata
      Iterator<String> keysIter = metadata.keySet().iterator();
      while (keysIter.hasNext()) {
          String keymd = keysIter.next();
          String valuemd = metadata.get(keymd);
          row.putToMetadata(new Utf8(keymd), ByteBuffer.wrap(valuemd.getBytes()));
      }

      if (customScore != -1)
        row.setScore(customScore);
      else
        row.setScore(scoreInjected);

      try {
        scfilters.injectedScore(url, row);
      } catch (ScoringFilterException e) {
        if (LOG.isWarnEnabled()) {
          LOG.warn("Cannot filter injected score for url " + url
              + ", using default (" + e.getMessage() + ")");
        }
      }
     
      row.putToMarkers(DbUpdaterJob.DISTANCE, new Utf8(String.valueOf(0)));

      Mark.INJECT_MARK.putMark(row, YES_STRING);
      context.write(reversedUrl, row);
    }
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      LOG.info("fetching: " + url);
    }

    ProtocolFactory factory = new ProtocolFactory(conf);
    Protocol protocol = factory.getProtocol(url);
    WebPage page = new WebPage();
   
    ProtocolOutput protocolOutput = protocol.getProtocolOutput(url, page);
   
    if(!protocolOutput.getStatus().isSuccess()) {
      LOG.error("Fetch failed with protocol status: "
          + ProtocolStatusUtils.getName(protocolOutput.getStatus().getCode())
          + ": " + ProtocolStatusUtils.getMessage(protocolOutput.getStatus()));
      return (-1);
    }
    Content content = protocolOutput.getContent();
   
    if (content == null) {
      LOG.error("No content for " + url);
      return (-1);
    }
    page.setBaseUrl(new org.apache.avro.util.Utf8(url));
    page.setContent(ByteBuffer.wrap(content.getContent()));

    if (force) {
      content.setContentType(contentType);
    } else {
      contentType = content.getContentType();
    }

    if (contentType == null) {
      LOG.error("Failed to determine content type!");
      return (-1);
    }

    page.setContentType(new Utf8(contentType));

    if (ParserJob.isTruncated(url, page)) {
      LOG.warn("Content is truncated, parse may fail!");
    }

    Parse parse = new ParseUtil(conf).parse(url, page);

    if (parse == null) {
      LOG.error("Problem with parse - check log");
      return (-1);
    }
   
    // Calculate the signature
    byte[] signature = SignatureFactory.getSignature(getConf()).calculate(page);
   
    if (LOG.isInfoEnabled()) {
      LOG.info("parsing: " + url);
      LOG.info("contentType: " + contentType);
      LOG.info("signature: " + StringUtil.toHexString(signature));
    }


    LOG.info("---------\nUrl\n---------------\n");
    System.out.print(url + "\n");
    LOG.info("---------\nMetadata\n---------\n");
    Map<Utf8, ByteBuffer> metadata = page.getMetadata();
    StringBuffer sb = new StringBuffer();
    if (metadata != null) {
      Iterator<Entry<Utf8, ByteBuffer>> iterator = metadata.entrySet()
          .iterator();
      while (iterator.hasNext()) {
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    private void advance() throws Exception, IOException {
      hasNext = res.next();
      if (hasNext && batchId != null) {
        do {
          WebPage page = res.get();
          Utf8 mark = Mark.UPDATEDB_MARK.checkMark(page);
          if (NutchJob.shouldProcess(mark, batchId)) {
            return;
          } else {
            if (LOG.isDebugEnabled()) {
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    try {
      ParseUtil parser = new ParseUtil(NutchConfiguration.create());
      /* loop through the test documents and validate result */
      for (int t = 0; t < docs.length; t++) {
        WebPage page = getPage(docs[t]);
        parser.parse(URL.toString(), page);
        ByteBuffer blang = page.getFromMetadata(new Utf8(Metadata.LANGUAGE));
        String lang = Bytes.toString(blang);
        assertEquals(metalanguages[t], lang);
      }
    } catch (Exception e) {
      e.printStackTrace(System.out);
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      fail(e.toString());
    }
  }

  private WebPage getPage(String text) {
    WebPage page = new WebPage();
    page.setBaseUrl(BASE);
    page.setContent(ByteBuffer.wrap(text.getBytes()));
    page.setContentType(new Utf8("text/html"));
    page
        .putToHeaders(EncodingDetector.CONTENT_TYPE_UTF8, new Utf8("text/html"));
    return page;
  }
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    }
    in.close();
    byte[] bytes = out.toByteArray();
    Configuration conf = NutchConfiguration.create();

    WebPage page = new WebPage();
    page.setBaseUrl(new Utf8(url));
    page.setContent(ByteBuffer.wrap(bytes));
    MimeUtil mimeutil = new MimeUtil(conf);
    String mtype = mimeutil.getMimeType(file);
    page.setContentType(new Utf8(mtype));

    new ParseUtil(conf).parse(url, page);

    ByteBuffer bb = page.getFromMetadata(new Utf8("License-Url"));
    assertEquals(license, Bytes.toString(bb));
    bb = page.getFromMetadata(new Utf8("License-Location"));
    assertEquals(location, Bytes.toString(bb));
    bb = page.getFromMetadata(new Utf8("Work-Type"));
        assertEquals(type, Bytes.toString(bb));
  }
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Related Classes of org.apache.nutch.storage.WebPage

  • org.apache.gora.persistency.impl.StateManagerImpl
  • org.apache.nutch.analysis.lang.TestHTMLLanguageParser
  • org.apache.nutch.api.DbReader$DbIterator
  • org.apache.nutch.crawl.DbUpdateReducer
  • org.apache.nutch.crawl.InjectorJob$UrlMapper
  • org.apache.nutch.crawl.TestGenerator
  • org.apache.nutch.crawl.TestInjector
  • org.apache.nutch.crawl.TestURLPartitioner
  • org.apache.nutch.crawl.WebTableReader
  • org.apache.nutch.fetcher.FetcherReducer$FetcherThread
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