org.apache.tika.parser.journal.GrobidRESTParser Maven / Gradle / Ivy

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.tika.parser.journal;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import org.apache.cxf.jaxrs.client.WebClient;
import org.apache.cxf.jaxrs.ext.multipart.Attachment;
import org.apache.cxf.jaxrs.ext.multipart.ContentDisposition;
import org.apache.cxf.jaxrs.ext.multipart.MultipartBody;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.ParseContext;
import org.xml.sax.ContentHandler;

public class GrobidRESTParser {

  private static final String GROBID_REST_HOST = "http://localhost:8080";

  private static final String GROBID_ISALIVE_PATH = "/grobid"; // isalive
                                                               // doesn't work
                                                               // nfc why

  private static final String GROBID_PROCESSHEADER_PATH = "/processHeaderDocument";

  private String restHostUrlStr;

  public GrobidRESTParser() {
    String restHostUrlStr = null;
    try {
      restHostUrlStr = readRestUrl();
    } catch (IOException e) {
      e.printStackTrace();
    }

    if (restHostUrlStr == null
        || (restHostUrlStr != null && restHostUrlStr.equals(""))) {
      this.restHostUrlStr = GROBID_REST_HOST;
    } else {
      this.restHostUrlStr = restHostUrlStr;
    }
  }

  public void parse(String filePath, ContentHandler handler, Metadata metadata,
      ParseContext context) throws FileNotFoundException {

    File pdfFile = new File(filePath);
    ContentDisposition cd = new ContentDisposition(
        "form-data; name=\"input\"; filename=\"" + pdfFile.getName() + "\"");
    Attachment att = new Attachment("input", new FileInputStream(pdfFile), cd);
    MultipartBody body = new MultipartBody(att);

    Response response = WebClient
        .create(restHostUrlStr + GROBID_PROCESSHEADER_PATH)
        .accept(MediaType.APPLICATION_XML).type(MediaType.MULTIPART_FORM_DATA)
        .post(body);

    try {
      String resp = response.readEntity(String.class);
      Metadata teiMet = new TEIParser().parse(resp);
      for (String key : teiMet.names()) {
        metadata.add("grobid:header_" + key, teiMet.get(key));
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  private static String readRestUrl() throws IOException {
    Properties grobidProperties = new Properties();
    grobidProperties.load(GrobidRESTParser.class
        .getResourceAsStream("GrobidExtractor.properties"));

    return grobidProperties.getProperty("grobid.server.url");
  }

  protected static boolean canRun() {
    Response response = null;

    try {
      response = WebClient.create(readRestUrl() + GROBID_ISALIVE_PATH)
          .accept(MediaType.TEXT_HTML).get();
      String resp = response.readEntity(String.class);
      return resp != null && !resp.equals("") && resp.startsWith("");
    } catch (Exception e) {
      e.printStackTrace();
      return false;
    }
  }

}

org.apache.tika.parser.journal.GrobidRESTParser Maven / Gradle / Ivy

"); } catch (Exception e) { e.printStackTrace(); return false; } } }

`"); } catch (Exception e) { e.printStackTrace(); return false; } } }`