| /* |
| * 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.gobblin.utils; |
| |
| import java.net.MalformedURLException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.net.URL; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.avro.generic.GenericRecord; |
| import org.apache.commons.httpclient.util.URIUtil; |
| import org.apache.commons.lang3.text.StrSubstitutor; |
| import org.apache.http.client.utils.URIBuilder; |
| |
| import com.google.common.base.Splitter; |
| import com.google.gson.Gson; |
| import com.typesafe.config.Config; |
| |
| import lombok.extern.slf4j.Slf4j; |
| |
| import org.apache.gobblin.http.HttpOperation; |
| import org.apache.gobblin.http.ResponseStatus; |
| import org.apache.gobblin.http.StatusType; |
| import org.apache.gobblin.util.AvroUtils; |
| |
| |
| /** |
| * Utilities to build gobblin http components |
| */ |
| @Slf4j |
| public class HttpUtils { |
| private static final Gson GSON = new Gson(); |
| private static final Splitter LIST_SPLITTER = Splitter.on(",").trimResults().omitEmptyStrings(); |
| |
| |
| /** |
| * Convert the given {@link GenericRecord} to {@link HttpOperation} |
| */ |
| public static HttpOperation toHttpOperation(GenericRecord record) { |
| if (record instanceof HttpOperation) { |
| return (HttpOperation) record; |
| } |
| |
| HttpOperation.Builder builder = HttpOperation.newBuilder(); |
| |
| Map<String, String> stringMap = AvroUtils.toStringMap(record.get(HttpConstants.KEYS)); |
| if (stringMap != null) { |
| builder.setKeys(stringMap); |
| } |
| stringMap = AvroUtils.toStringMap(record.get(HttpConstants.QUERY_PARAMS)); |
| if (stringMap != null) { |
| builder.setQueryParams(stringMap); |
| } |
| stringMap = AvroUtils.toStringMap(record.get(HttpConstants.HEADERS)); |
| if (stringMap != null) { |
| builder.setHeaders(stringMap); |
| } |
| Object body = record.get(HttpConstants.BODY); |
| if (body != null) { |
| builder.setBody(body.toString()); |
| } |
| |
| return builder.build(); |
| } |
| |
| /** |
| * Given a url template, interpolate with keys and build the URI after adding query parameters |
| * |
| * <p> |
| * With url template: http://test.com/resource/(urn:${resourceId})/entities/(entity:${entityId}), |
| * keys: { "resourceId": 123, "entityId": 456 }, queryParams: { "locale": "en_US" }, the outpuT URI is: |
| * http://test.com/resource/(urn:123)/entities/(entity:456)?locale=en_US |
| * </p> |
| * |
| * @param urlTemplate url template |
| * @param keys data map to interpolate url template |
| * @param queryParams query parameters added to the url |
| * @return a uri |
| */ |
| public static URI buildURI(String urlTemplate, Map<String, String> keys, Map<String, String> queryParams) { |
| // Compute base url |
| String url = urlTemplate; |
| if (keys != null && keys.size() != 0) { |
| url = StrSubstitutor.replace(urlTemplate, keys); |
| } |
| |
| try { |
| URIBuilder uriBuilder = new URIBuilder(url); |
| // Append query parameters |
| if (queryParams != null && queryParams.size() != 0) { |
| for (Map.Entry<String, String> entry : queryParams.entrySet()) { |
| uriBuilder.addParameter(entry.getKey(), entry.getValue()); |
| } |
| } |
| return uriBuilder.build(); |
| } catch (URISyntaxException e) { |
| throw new RuntimeException("Fail to build uri", e); |
| } |
| } |
| |
| /** |
| * Get a {@link List<String>} from a comma separated string |
| */ |
| public static List<String> getStringList(String list) { |
| return LIST_SPLITTER.splitToList(list); |
| } |
| |
| /** |
| * Get the error code whitelist from a config |
| */ |
| public static Set<String> getErrorCodeWhitelist(Config config) { |
| String list = config.getString(HttpConstants.ERROR_CODE_WHITELIST).toLowerCase(); |
| return new HashSet<>(getStringList(list)); |
| } |
| |
| /** |
| * Update {@link StatusType} of a {@link ResponseStatus} based on statusCode and error code white list |
| * |
| * @param status a status report after handling the a response |
| * @param statusCode a status code in http domain |
| * @param errorCodeWhitelist a whitelist specifies what http error codes are tolerable |
| */ |
| public static void updateStatusType(ResponseStatus status, int statusCode, Set<String> errorCodeWhitelist) { |
| if (statusCode >= 300 & statusCode < 500) { |
| List<String> whitelist = new ArrayList<>(2); |
| whitelist.add(Integer.toString(statusCode)); |
| if (statusCode > 400) { |
| whitelist.add(HttpConstants.CODE_4XX); |
| } else { |
| whitelist.add(HttpConstants.CODE_3XX); |
| } |
| if (whitelist.stream().anyMatch(errorCodeWhitelist::contains)) { |
| status.setType(StatusType.CONTINUE); |
| } else { |
| status.setType(StatusType.CLIENT_ERROR); |
| } |
| } else if (statusCode >= 500) { |
| List<String> whitelist = Arrays.asList(Integer.toString(statusCode), HttpConstants.CODE_5XX); |
| if (whitelist.stream().anyMatch(errorCodeWhitelist::contains)) { |
| status.setType(StatusType.CONTINUE); |
| } else { |
| status.setType(StatusType.SERVER_ERROR); |
| } |
| } |
| } |
| |
| /** |
| * Convert a json encoded string to a Map |
| * |
| * @param jsonString json string |
| * @return the Map encoded in the string |
| */ |
| public static Map<String, Object> toMap(String jsonString) { |
| Map<String, Object> map = new HashMap<>(); |
| return GSON.fromJson(jsonString, map.getClass()); |
| } |
| |
| |
| public static String createApacheHttpClientLimiterKey(Config config) { |
| try { |
| String urlTemplate = config.getString(HttpConstants.URL_TEMPLATE); |
| URL url = new URL(urlTemplate); |
| String key = url.getProtocol() + "/" + url.getHost(); |
| if (url.getPort() > 0) { |
| key = key + "/" + url.getPort(); |
| } |
| log.info("Get limiter key [" + key + "]"); |
| return key; |
| } catch (MalformedURLException e) { |
| throw new IllegalStateException("Cannot get limiter key.", e); |
| } |
| } |
| |
| /** |
| * Convert D2 URL template into a string used for throttling limiter |
| * |
| * Valid: |
| * d2://host/${resource-id} |
| * |
| * Invalid: |
| * d2://host${resource-id}, because we cannot differentiate the host |
| */ |
| public static String createR2ClientLimiterKey(Config config) { |
| |
| String urlTemplate = config.getString(HttpConstants.URL_TEMPLATE); |
| try { |
| String escaped = URIUtil.encodeQuery(urlTemplate); |
| URI uri = new URI(escaped); |
| if (uri.getHost() == null) |
| throw new RuntimeException("Cannot get host part from uri" + urlTemplate); |
| |
| String key = uri.getScheme() + "/" + uri.getHost(); |
| if (uri.getPort() > 0) { |
| key = key + "/" + uri.getPort(); |
| } |
| log.info("Get limiter key [" + key + "]"); |
| return key; |
| } catch (Exception e) { |
| throw new RuntimeException("Cannot create R2 limiter key", e); |
| } |
| } |
| } |