| /* |
| * 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.language.translate.impl; |
| |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| 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.tika.exception.TikaException; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * An implementation of a REST client for the |
| * <a href="https://developer.lingo24.com/premium-machine-translation-api">Premium MT API v1</a>. |
| * You can sign up for an access plan online on the <a href="https://developer.lingo24.com/plans">Lingo24 Developer Portal</a> |
| * and set your Application's User Key in the <code>translator.lingo24.properties</code> file. |
| */ |
| public class Lingo24Translator extends AbstractTranslator { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(Lingo24Translator.class); |
| |
| private static final String LINGO24_TRANSLATE_URL_BASE = "https://api.lingo24.com/mt/v1/translate"; |
| |
| private static final String DEFAULT_KEY = "dummy-key"; |
| |
| private WebClient client; |
| |
| private String userKey; |
| |
| private boolean isAvailable; |
| |
| public Lingo24Translator() { |
| this.client = WebClient.create(LINGO24_TRANSLATE_URL_BASE); |
| this.isAvailable = true; |
| Properties config = new Properties(); |
| try { |
| config.load(Lingo24Translator.class |
| .getResourceAsStream( |
| "translator.lingo24.properties")); |
| this.userKey = config.getProperty("translator.user-key"); |
| if (this.userKey.equals(DEFAULT_KEY)) |
| this.isAvailable = false; |
| } catch (Exception e) { |
| LOG.warn("Couldn't read config file", e); |
| isAvailable = false; |
| } |
| } |
| |
| @Override |
| public String translate(String text, String sourceLanguage, |
| String targetLanguage) throws TikaException, IOException { |
| if (!this.isAvailable) |
| return text; |
| Response response = client.accept(MediaType.APPLICATION_JSON) |
| .query("user_key", userKey).query("source", sourceLanguage) |
| .query("target", targetLanguage).query("q", text).get(); |
| StringBuilder responseText = new StringBuilder(); |
| try (InputStreamReader inputStreamReader = new InputStreamReader( |
| (InputStream) response.getEntity(), UTF_8); |
| BufferedReader reader = new BufferedReader(inputStreamReader); |
| ) { |
| String line; |
| while ((line = reader.readLine()) != null) { |
| responseText.append(line); |
| } |
| } |
| |
| ObjectMapper mapper = new ObjectMapper(); |
| JsonNode jsonResp = mapper.readTree(responseText.toString()); |
| if (jsonResp.findValuesAsText("errors").isEmpty()) { |
| return jsonResp.findValuesAsText("translation").get(0); |
| } else { |
| throw new TikaException(jsonResp.findValue("errors").get(0).asText()); |
| } |
| } |
| |
| @Override |
| public String translate(String text, String targetLanguage) |
| throws TikaException, IOException { |
| if (!this.isAvailable) |
| return text; |
| |
| String sourceLanguage = detectLanguage(text).getLanguage(); |
| return translate(text, sourceLanguage, targetLanguage); |
| } |
| |
| @Override |
| public boolean isAvailable() { |
| return this.isAvailable; |
| } |
| |
| } |