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[feature](ES Catalog)Add FE open API for Elasticsearch
1. get index mapping api 2. search index api
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fe/fe-core/src/main/java/org/apache/doris/httpv2/restv2/ElasticsearchAction.java
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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. | ||
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| package org.apache.doris.httpv2.restv2; | ||
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| import org.apache.doris.catalog.Env; | ||
| import org.apache.doris.common.Config; | ||
| import org.apache.doris.common.util.JsonUtil; | ||
| import org.apache.doris.datasource.CatalogIf; | ||
| import org.apache.doris.datasource.es.EsExternalCatalog; | ||
| import org.apache.doris.httpv2.entity.ResponseEntityBuilder; | ||
| import org.apache.doris.httpv2.rest.RestBaseController; | ||
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| import com.fasterxml.jackson.databind.node.ObjectNode; | ||
| import com.google.common.collect.Maps; | ||
| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
| import org.springframework.web.bind.annotation.RequestMapping; | ||
| import org.springframework.web.bind.annotation.RequestMethod; | ||
| import org.springframework.web.bind.annotation.RestController; | ||
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| import java.io.BufferedReader; | ||
| import java.io.IOException; | ||
| import java.util.Map; | ||
| import java.util.function.BiFunction; | ||
| import java.util.stream.Collectors; | ||
| import javax.servlet.http.HttpServletRequest; | ||
| import javax.servlet.http.HttpServletResponse; | ||
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| @RestController | ||
| @RequestMapping("/rest/v2/api/es") | ||
| public class ElasticsearchAction extends RestBaseController { | ||
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| private static final Logger LOG = LogManager.getLogger(ElasticsearchAction.class); | ||
| private static final String CATALOG = "catalog"; | ||
| private static final String TABLE = "table"; | ||
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| private Object handleRequest(HttpServletRequest request, HttpServletResponse response, | ||
| BiFunction<EsExternalCatalog, String, String> action) { | ||
| if (Config.enable_all_http_auth) { | ||
| executeCheckPassword(request, response); | ||
| } | ||
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| try { | ||
| if (!Env.getCurrentEnv().isMaster()) { | ||
| return redirectToMasterOrException(request, response); | ||
| } | ||
| } catch (Exception e) { | ||
| return ResponseEntityBuilder.okWithCommonError(e.getMessage()); | ||
| } | ||
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| Map<String, Object> resultMap = Maps.newHashMap(); | ||
| Env env = Env.getCurrentEnv(); | ||
| String catalogName = request.getParameter(CATALOG); | ||
| String tableName = request.getParameter(TABLE); | ||
| CatalogIf catalog = env.getCatalogMgr().getCatalog(catalogName); | ||
| if (!(catalog instanceof EsExternalCatalog)) { | ||
| return ResponseEntityBuilder.badRequest("unknown ES Catalog: " + catalogName); | ||
| } | ||
| EsExternalCatalog esExternalCatalog = (EsExternalCatalog) catalog; | ||
| esExternalCatalog.makeSureInitialized(); | ||
| String result = action.apply(esExternalCatalog, tableName); | ||
| ObjectNode jsonResult = JsonUtil.parseObject(result); | ||
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| resultMap.put("catalog", catalogName); | ||
| resultMap.put("table", tableName); | ||
| resultMap.put("result", jsonResult); | ||
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| return ResponseEntityBuilder.ok(resultMap); | ||
| } | ||
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| @RequestMapping(path = "/get_mapping", method = RequestMethod.GET) | ||
| public Object getMapping(HttpServletRequest request, HttpServletResponse response) { | ||
| return handleRequest(request, response, (esExternalCatalog, tableName) -> | ||
| esExternalCatalog.getEsRestClient().getMapping(tableName)); | ||
| } | ||
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| @RequestMapping(path = "/search", method = RequestMethod.POST) | ||
| public Object search(HttpServletRequest request, HttpServletResponse response) { | ||
| String body; | ||
| try { | ||
| body = getRequestBody(request); | ||
| } catch (IOException e) { | ||
| return ResponseEntityBuilder.okWithCommonError(e.getMessage()); | ||
| } | ||
| return handleRequest(request, response, (esExternalCatalog, tableName) -> | ||
| esExternalCatalog.getEsRestClient().searchIndex(tableName, body)); | ||
| } | ||
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| private String getRequestBody(HttpServletRequest request) throws IOException { | ||
| BufferedReader reader = request.getReader(); | ||
| return reader.lines().collect(Collectors.joining(System.lineSeparator())); | ||
| } | ||
| } |