Exemplo n.º 1
0
 @Override
 public boolean accept(VirtualFile file) {
   try {
     TikaConfig tikaConfig = new TikaConfig();
     MediaType mimeType =
         tikaConfig.getDetector().detect(file.getContent().getStream(), new Metadata());
     return mediaTypes.contains(mimeType);
   } catch (TikaException | ForbiddenException | ServerException | IOException e) {
     return false;
   }
 }
Exemplo n.º 2
0
  private void scan(ByteArrayInputStream in, String path, SVNDirEntry dirEntry) {
    try {
      Metadata metadata = new Metadata();
      metadata.set(Metadata.RESOURCE_NAME_KEY, path);

      // The following code part is from an proposal of the Authors of
      // Tika:
      // https://issues.apache.org/jira/browse/TIKA-232
      TikaConfig config = TikaConfig.getDefaultConfig(); // without a
      // delegate
      // parser
      Parser parser = new AutoDetectParser(config);
      DefaultHandler handler = new BodyContentHandler();
      parser.parse(in, handler, metadata);
      getDocument().addTokenizedField(FieldNames.CONTENTS, handler.toString());

    } catch (Exception e) {
      LOGGER.error("We had an exception " + path + " (r" + dirEntry.getRevision() + ")", e);
    } finally {
      try {
        in.close();
      } catch (Exception e) {
        LOGGER.error("We had an exception " + path + " (r" + dirEntry.getRevision() + ")", e);
      }
    }
  }
  @Override
  protected ParseContext buildParseContext(
      Metadata metadata, String targetMimeType, TransformationOptions options) {
    ParseContext context = super.buildParseContext(metadata, targetMimeType, options);

    boolean recurse = includeContents;
    if (options.getIncludeEmbedded() != null) {
      recurse = options.getIncludeEmbedded();
    }

    if (recurse) {
      // Use an auto detect parser to handle the contents
      if (tikaConfig == null) {
        tikaConfig = TikaConfig.getDefaultConfig();
      }
      context.set(Parser.class, new AutoDetectParser(tikaConfig));
    }

    return context;
  }
  @Override
  public void load(
      SolrQueryRequest req,
      SolrQueryResponse rsp,
      ContentStream stream,
      UpdateRequestProcessor processor)
      throws Exception {
    Parser parser = null;
    String streamType = req.getParams().get(ExtractingParams.STREAM_TYPE, null);
    if (streamType != null) {
      // Cache?  Parsers are lightweight to construct and thread-safe, so I'm told
      MediaType mt = MediaType.parse(streamType.trim().toLowerCase(Locale.ROOT));
      parser = new DefaultParser(config.getMediaTypeRegistry()).getParsers().get(mt);
    } else {
      parser = autoDetectParser;
    }
    if (parser != null) {
      Metadata metadata = new Metadata();

      // If you specify the resource name (the filename, roughly) with this parameter,
      // then Tika can make use of it in guessing the appropriate MIME type:
      String resourceName = req.getParams().get(ExtractingParams.RESOURCE_NAME, null);
      if (resourceName != null) {
        metadata.add(TikaMetadataKeys.RESOURCE_NAME_KEY, resourceName);
      }
      // Provide stream's content type as hint for auto detection
      if (stream.getContentType() != null) {
        metadata.add(HttpHeaders.CONTENT_TYPE, stream.getContentType());
      }

      InputStream inputStream = null;
      try {
        inputStream = stream.getStream();
        metadata.add(ExtractingMetadataConstants.STREAM_NAME, stream.getName());
        metadata.add(ExtractingMetadataConstants.STREAM_SOURCE_INFO, stream.getSourceInfo());
        metadata.add(ExtractingMetadataConstants.STREAM_SIZE, String.valueOf(stream.getSize()));
        metadata.add(ExtractingMetadataConstants.STREAM_CONTENT_TYPE, stream.getContentType());
        // HtmlParser and TXTParser regard Metadata.CONTENT_ENCODING in metadata
        String charset = ContentStreamBase.getCharsetFromContentType(stream.getContentType());
        if (charset != null) {
          metadata.add(HttpHeaders.CONTENT_ENCODING, charset);
        }

        String xpathExpr = params.get(ExtractingParams.XPATH_EXPRESSION);
        boolean extractOnly = params.getBool(ExtractingParams.EXTRACT_ONLY, false);
        SolrContentHandler handler =
            factory.createSolrContentHandler(metadata, params, req.getSchema());
        ContentHandler parsingHandler = handler;

        StringWriter writer = null;
        BaseMarkupSerializer serializer = null;
        if (extractOnly == true) {
          String extractFormat = params.get(ExtractingParams.EXTRACT_FORMAT, "xml");
          writer = new StringWriter();
          if (extractFormat.equals(TEXT_FORMAT)) {
            serializer = new TextSerializer();
            serializer.setOutputCharStream(writer);
            serializer.setOutputFormat(new OutputFormat("Text", "UTF-8", true));
          } else {
            serializer = new XMLSerializer(writer, new OutputFormat("XML", "UTF-8", true));
          }
          if (xpathExpr != null) {
            Matcher matcher = PARSER.parse(xpathExpr);
            serializer
                .startDocument(); // The MatchingContentHandler does not invoke startDocument.  See
                                  // http://tika.markmail.org/message/kknu3hw7argwiqin
            parsingHandler = new MatchingContentHandler(serializer, matcher);
          } else {
            parsingHandler = serializer;
          }
        } else if (xpathExpr != null) {
          Matcher matcher = PARSER.parse(xpathExpr);
          parsingHandler = new MatchingContentHandler(handler, matcher);
        } // else leave it as is

        try {
          // potentially use a wrapper handler for parsing, but we still need the SolrContentHandler
          // for getting the document.
          ParseContext context = parseContextConfig.create();

          context.set(Parser.class, parser);
          context.set(HtmlMapper.class, MostlyPassthroughHtmlMapper.INSTANCE);

          // Password handling
          RegexRulesPasswordProvider epp = new RegexRulesPasswordProvider();
          String pwMapFile = params.get(ExtractingParams.PASSWORD_MAP_FILE);
          if (pwMapFile != null && pwMapFile.length() > 0) {
            InputStream is = req.getCore().getResourceLoader().openResource(pwMapFile);
            if (is != null) {
              log.debug("Password file supplied: " + pwMapFile);
              epp.parse(is);
            }
          }
          context.set(PasswordProvider.class, epp);
          String resourcePassword = params.get(ExtractingParams.RESOURCE_PASSWORD);
          if (resourcePassword != null) {
            epp.setExplicitPassword(resourcePassword);
            log.debug("Literal password supplied for file " + resourceName);
          }
          parser.parse(inputStream, parsingHandler, metadata, context);
        } catch (TikaException e) {
          if (ignoreTikaException)
            log.warn(
                new StringBuilder("skip extracting text due to ")
                    .append(e.getLocalizedMessage())
                    .append(". metadata=")
                    .append(metadata.toString())
                    .toString());
          else throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e);
        }
        if (extractOnly == false) {
          addDoc(handler);
        } else {
          // serializer is not null, so we need to call endDoc on it if using xpath
          if (xpathExpr != null) {
            serializer.endDocument();
          }
          rsp.add(stream.getName(), writer.toString());
          writer.close();
          String[] names = metadata.names();
          NamedList metadataNL = new NamedList();
          for (int i = 0; i < names.length; i++) {
            String[] vals = metadata.getValues(names[i]);
            metadataNL.add(names[i], vals);
          }
          rsp.add(stream.getName() + "_metadata", metadataNL);
        }
      } catch (SAXException e) {
        throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e);
      } finally {
        IOUtils.closeQuietly(inputStream);
      }
    } else {
      throw new SolrException(
          SolrException.ErrorCode.BAD_REQUEST,
          "Stream type of "
              + streamType
              + " didn't match any known parsers.  Please supply the "
              + ExtractingParams.STREAM_TYPE
              + " parameter.");
    }
  }
Exemplo n.º 5
0
    public void parseEmbedded(
        InputStream inputStream,
        ContentHandler contentHandler,
        Metadata metadata,
        boolean outputHtml)
        throws SAXException, IOException {
      String name = metadata.get(Metadata.RESOURCE_NAME_KEY);

      if (name == null) {
        name = "file" + count++;
      }

      MediaType contentType = detector.detect(inputStream, metadata);

      if (name.indexOf('.') == -1 && contentType != null) {
        try {
          name += config.getMimeRepository().forName(contentType.toString()).getExtension();
        } catch (MimeTypeException e) {
          e.printStackTrace();
        }
      }

      String relID = metadata.get(Metadata.EMBEDDED_RELATIONSHIP_ID);
      if (relID != null && !name.startsWith(relID)) {
        name = relID + "_" + name;
      }

      File outputFile = new File(extractDir, name);
      File parent = outputFile.getParentFile();
      if (!parent.exists()) {
        if (!parent.mkdirs()) {
          throw new IOException("unable to create directory \"" + parent + "\"");
        }
      }
      System.out.println("Extracting '" + name + "' (" + contentType + ") to " + outputFile);

      FileOutputStream os = null;

      try {
        os = new FileOutputStream(outputFile);

        if (inputStream instanceof TikaInputStream) {
          TikaInputStream tin = (TikaInputStream) inputStream;

          if (tin.getOpenContainer() != null && tin.getOpenContainer() instanceof DirectoryEntry) {
            POIFSFileSystem fs = new POIFSFileSystem();
            copy((DirectoryEntry) tin.getOpenContainer(), fs.getRoot());
            fs.writeFilesystem(os);
          } else {
            IOUtils.copy(inputStream, os);
          }
        } else {
          IOUtils.copy(inputStream, os);
        }
      } catch (Exception e) {
        logger.warn("Ignoring unexpected exception trying to save embedded file " + name, e);
      } finally {
        if (os != null) {
          os.close();
        }
      }
    }
Exemplo n.º 6
0
  private class FileEmbeddedDocumentExtractor implements EmbeddedDocumentExtractor {

    private int count = 0;
    private final TikaConfig config = TikaConfig.getDefaultConfig();

    public boolean shouldParseEmbedded(Metadata metadata) {
      return true;
    }

    public void parseEmbedded(
        InputStream inputStream,
        ContentHandler contentHandler,
        Metadata metadata,
        boolean outputHtml)
        throws SAXException, IOException {
      String name = metadata.get(Metadata.RESOURCE_NAME_KEY);

      if (name == null) {
        name = "file" + count++;
      }

      MediaType contentType = detector.detect(inputStream, metadata);

      if (name.indexOf('.') == -1 && contentType != null) {
        try {
          name += config.getMimeRepository().forName(contentType.toString()).getExtension();
        } catch (MimeTypeException e) {
          e.printStackTrace();
        }
      }

      String relID = metadata.get(Metadata.EMBEDDED_RELATIONSHIP_ID);
      if (relID != null && !name.startsWith(relID)) {
        name = relID + "_" + name;
      }

      File outputFile = new File(extractDir, name);
      File parent = outputFile.getParentFile();
      if (!parent.exists()) {
        if (!parent.mkdirs()) {
          throw new IOException("unable to create directory \"" + parent + "\"");
        }
      }
      System.out.println("Extracting '" + name + "' (" + contentType + ") to " + outputFile);

      FileOutputStream os = null;

      try {
        os = new FileOutputStream(outputFile);

        if (inputStream instanceof TikaInputStream) {
          TikaInputStream tin = (TikaInputStream) inputStream;

          if (tin.getOpenContainer() != null && tin.getOpenContainer() instanceof DirectoryEntry) {
            POIFSFileSystem fs = new POIFSFileSystem();
            copy((DirectoryEntry) tin.getOpenContainer(), fs.getRoot());
            fs.writeFilesystem(os);
          } else {
            IOUtils.copy(inputStream, os);
          }
        } else {
          IOUtils.copy(inputStream, os);
        }
      } catch (Exception e) {
        logger.warn("Ignoring unexpected exception trying to save embedded file " + name, e);
      } finally {
        if (os != null) {
          os.close();
        }
      }
    }

    protected void copy(DirectoryEntry sourceDir, DirectoryEntry destDir) throws IOException {
      for (org.apache.poi.poifs.filesystem.Entry entry : sourceDir) {
        if (entry instanceof DirectoryEntry) {
          // Need to recurse
          DirectoryEntry newDir = destDir.createDirectory(entry.getName());
          copy((DirectoryEntry) entry, newDir);
        } else {
          // Copy entry
          InputStream contents = new DocumentInputStream((DocumentEntry) entry);
          try {
            destDir.createDocument(entry.getName(), contents);
          } finally {
            contents.close();
          }
        }
      }
    }
  }
 @Override
 protected Parser getParser() {
   return new CompositeParser(tikaConfig.getMediaTypeRegistry(), parsers);
 }
Exemplo n.º 8
0
  public ParseResult getParse(Content content) {
    String mimeType = content.getContentType();

    URL base;
    try {
      base = new URL(content.getBaseUrl());
    } catch (MalformedURLException e) {
      return new ParseStatus(e).getEmptyParseResult(content.getUrl(), getConf());
    }

    // get the right parser using the mime type as a clue
    Parser parser = tikaConfig.getParser(MediaType.parse(mimeType));
    byte[] raw = content.getContent();

    if (parser == null) {
      String message = "Can't retrieve Tika parser for mime-type " + mimeType;
      LOG.error(message);
      return new ParseStatus(ParseStatus.FAILED, message)
          .getEmptyParseResult(content.getUrl(), getConf());
    }

    LOG.debug("Using Tika parser " + parser.getClass().getName() + " for mime-type " + mimeType);

    Metadata tikamd = new Metadata();

    HTMLDocumentImpl doc = new HTMLDocumentImpl();
    doc.setErrorChecking(false);
    DocumentFragment root = doc.createDocumentFragment();
    DOMBuilder domhandler = new DOMBuilder(doc, root);
    ParseContext context = new ParseContext();
    try {
      parser.parse(new ByteArrayInputStream(raw), domhandler, tikamd, context);
    } catch (Exception e) {
      LOG.error("Error parsing " + content.getUrl(), e);
      return new ParseStatus(ParseStatus.FAILED, e.getMessage())
          .getEmptyParseResult(content.getUrl(), getConf());
    }

    HTMLMetaTags metaTags = new HTMLMetaTags();
    String text = "";
    String title = "";
    Outlink[] outlinks = new Outlink[0];
    org.apache.nutch.metadata.Metadata nutchMetadata = new org.apache.nutch.metadata.Metadata();

    // we have converted the sax events generated by Tika into a DOM object
    // so we can now use the usual HTML resources from Nutch
    // get meta directives
    HTMLMetaProcessor.getMetaTags(metaTags, root, base);
    if (LOG.isTraceEnabled()) {
      LOG.trace("Meta tags for " + base + ": " + metaTags.toString());
    }

    // check meta directives
    if (!metaTags.getNoIndex()) { // okay to index
      StringBuffer sb = new StringBuffer();
      if (LOG.isTraceEnabled()) {
        LOG.trace("Getting text...");
      }
      utils.getText(sb, root); // extract text
      text = sb.toString();
      sb.setLength(0);
      if (LOG.isTraceEnabled()) {
        LOG.trace("Getting title...");
      }
      utils.getTitle(sb, root); // extract title
      title = sb.toString().trim();
    }

    if (!metaTags.getNoFollow()) { // okay to follow links
      ArrayList<Outlink> l = new ArrayList<Outlink>(); // extract outlinks
      URL baseTag = utils.getBase(root);
      if (LOG.isTraceEnabled()) {
        LOG.trace("Getting links...");
      }
      utils.getOutlinks(baseTag != null ? baseTag : base, l, root);
      outlinks = l.toArray(new Outlink[l.size()]);
      if (LOG.isTraceEnabled()) {
        LOG.trace("found " + outlinks.length + " outlinks in " + content.getUrl());
      }
    }

    // populate Nutch metadata with Tika metadata
    String[] TikaMDNames = tikamd.names();
    for (String tikaMDName : TikaMDNames) {
      if (tikaMDName.equalsIgnoreCase(Metadata.TITLE)) continue;
      // TODO what if multivalued?
      nutchMetadata.add(tikaMDName, tikamd.get(tikaMDName));
    }

    // no outlinks? try OutlinkExtractor e.g works for mime types where no
    // explicit markup for anchors

    if (outlinks.length == 0) {
      outlinks = OutlinkExtractor.getOutlinks(text, getConf());
    }

    ParseStatus status = new ParseStatus(ParseStatus.SUCCESS);
    if (metaTags.getRefresh()) {
      status.setMinorCode(ParseStatus.SUCCESS_REDIRECT);
      status.setArgs(
          new String[] {
            metaTags.getRefreshHref().toString(), Integer.toString(metaTags.getRefreshTime())
          });
    }
    ParseData parseData =
        new ParseData(status, title, outlinks, content.getMetadata(), nutchMetadata);
    ParseResult parseResult =
        ParseResult.createParseResult(content.getUrl(), new ParseImpl(text, parseData));

    // run filters on parse
    ParseResult filteredParse = this.htmlParseFilters.filter(content, parseResult, metaTags, root);
    if (metaTags.getNoCache()) { // not okay to cache
      for (Map.Entry<org.apache.hadoop.io.Text, Parse> entry : filteredParse)
        entry.getValue().getData().getParseMeta().set(Nutch.CACHING_FORBIDDEN_KEY, cachingPolicy);
    }
    return filteredParse;
  }