| /* |
| * 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.solr.handler.dataimport; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.Reader; |
| import java.lang.invoke.MethodHandles; |
| import java.net.URL; |
| import java.net.URLConnection; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Properties; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * <p> A data source implementation which can be used to read character files using HTTP. </p> <p> Refer to <a |
| * href="http://wiki.apache.org/solr/DataImportHandler">http://wiki.apache.org/solr/DataImportHandler</a> for more |
| * details. </p> |
| * <p> |
| * <b>This API is experimental and may change in the future.</b> |
| * |
| * |
| * @since solr 1.4 |
| */ |
| public class URLDataSource extends DataSource<Reader> { |
| private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| private String baseUrl; |
| |
| private String encoding; |
| |
| private int connectionTimeout = CONNECTION_TIMEOUT; |
| |
| private int readTimeout = READ_TIMEOUT; |
| |
| private Context context; |
| |
| private Properties initProps; |
| |
| public URLDataSource() { |
| } |
| |
| @Override |
| public void init(Context context, Properties initProps) { |
| this.context = context; |
| this.initProps = initProps; |
| |
| baseUrl = getInitPropWithReplacements(BASE_URL); |
| if (getInitPropWithReplacements(ENCODING) != null) |
| encoding = getInitPropWithReplacements(ENCODING); |
| String cTimeout = getInitPropWithReplacements(CONNECTION_TIMEOUT_FIELD_NAME); |
| String rTimeout = getInitPropWithReplacements(READ_TIMEOUT_FIELD_NAME); |
| if (cTimeout != null) { |
| try { |
| connectionTimeout = Integer.parseInt(cTimeout); |
| } catch (NumberFormatException e) { |
| log.warn("Invalid connection timeout: {}", cTimeout); |
| } |
| } |
| if (rTimeout != null) { |
| try { |
| readTimeout = Integer.parseInt(rTimeout); |
| } catch (NumberFormatException e) { |
| log.warn("Invalid read timeout: {}", rTimeout); |
| } |
| } |
| } |
| |
| @Override |
| public Reader getData(String query) { |
| URL url = null; |
| try { |
| if (URIMETHOD.matcher(query).find()) url = new URL(query); |
| else url = new URL(baseUrl + query); |
| |
| log.debug("Accessing URL: {}", url); |
| |
| URLConnection conn = url.openConnection(); |
| conn.setConnectTimeout(connectionTimeout); |
| conn.setReadTimeout(readTimeout); |
| InputStream in = conn.getInputStream(); |
| String enc = encoding; |
| if (enc == null) { |
| String cType = conn.getContentType(); |
| if (cType != null) { |
| Matcher m = CHARSET_PATTERN.matcher(cType); |
| if (m.find()) { |
| enc = m.group(1); |
| } |
| } |
| } |
| if (enc == null) |
| enc = UTF_8; |
| DataImporter.QUERY_COUNT.get().incrementAndGet(); |
| return new InputStreamReader(in, enc); |
| } catch (Exception e) { |
| log.error("Exception thrown while getting data", e); |
| throw new DataImportHandlerException(DataImportHandlerException.SEVERE, |
| "Exception in invoking url " + url, e); |
| } |
| } |
| |
| @Override |
| public void close() { |
| } |
| |
| public String getBaseUrl() { |
| return baseUrl; |
| } |
| |
| private String getInitPropWithReplacements(String propertyName) { |
| final String expr = initProps.getProperty(propertyName); |
| if (expr == null) { |
| return null; |
| } |
| return context.replaceTokens(expr); |
| } |
| |
| static final Pattern URIMETHOD = Pattern.compile("\\w{3,}:/"); |
| |
| private static final Pattern CHARSET_PATTERN = Pattern.compile(".*?charset=(.*)$", Pattern.CASE_INSENSITIVE); |
| |
| public static final String ENCODING = "encoding"; |
| |
| public static final String BASE_URL = "baseUrl"; |
| |
| public static final String UTF_8 = StandardCharsets.UTF_8.name(); |
| |
| public static final String CONNECTION_TIMEOUT_FIELD_NAME = "connectionTimeout"; |
| |
| public static final String READ_TIMEOUT_FIELD_NAME = "readTimeout"; |
| |
| public static final int CONNECTION_TIMEOUT = 5000; |
| |
| public static final int READ_TIMEOUT = 10000; |
| } |