Minor tweaks for ES to OS transition for OpenSearch consolidation

Author: jmgasper

README.md

@@ -62,6 +62,7 @@ The following parameters can be set in config files or in env variables:
 - ES.ES_INDEX: Elasticsearch index name
 - ES.ES_REFRESH: Elasticsearch refresh method. Default to string `true`(i.e. refresh immediately)
 - FILE_UPLOAD_SIZE_LIMIT: the file upload size limit in bytes
+- OPENSEARCH: Flag to use Opensearch NPM instead of Elasticsearch
 - RESOURCES_API_URL: TC resources API base URL
 - GROUPS_API_URL: TC groups API base URL
 - PROJECTS_API_URL: TC projects API base URL

config/default.js

@@ -40,7 +40,7 @@ module.exports = {
 
   ES: {
     // above AWS_REGION is used if we use AWS ES
-    HOST: process.env.ES_HOST || "localhost:9200",
+    HOST: process.env.OS_HOST || "localhost:9200",
     API_VERSION: process.env.ES_API_VERSION || "6.8",
     OPENSEARCH: process.env.OPENSEARCH || "false",
     ES_INDEX: process.env.ES_INDEX || "challenge",

src/common/helper.js

@@ -17,7 +17,7 @@ const HttpStatus = require("http-status-codes");
 const xss = require("xss");
 const logger = require("./logger");
 
-const { Client: ESClient } = require("@opensearch-project/opensearch");
+const { Client: OSClient } = require("@opensearch-project/opensearch");
 const elasticsearch = require("elasticsearch");
 
 const projectHelper = require("./project-helper");
@@ -734,7 +734,7 @@ function getESClient() {
       });
     }
   } else {
-    esClient = new ESClient({
+    esClient = new OSClient({
       node: esHost,
       ssl: {
         rejectUnauthorized: false,