feat: admin endpoints to migrate data from DB to ES (metadata)

At the moment it only supports "metadata" index.

Author: maxceem

src/routes/admin/es-migrate-from-db.js

@@ -0,0 +1,46 @@
+/**
+ * Admin endpoint migrate data from DB to ES index.
+ *
+ * Waits until the operation is completed and returns result.
+ */
+import _ from 'lodash';
+import config from 'config';
+import { middleware as tcMiddleware } from 'tc-core-library-js';
+import esUtils from '../../utils/es';
+
+const ES_METADATA_INDEX = config.get('elasticsearchConfig.metadataIndexName');
+
+const permissions = tcMiddleware.permissions;
+
+module.exports = [
+  permissions('project.admin'),
+  (req, res, next) => {
+    try {
+      const logger = req.log;
+      logger.debug('Entered Admin#migrateFromDb');
+
+      const indexName = _.get(req, 'body.indexName');
+      logger.debug('indexName', indexName);
+
+      if (!indexName) {
+        const apiErr = new Error('"indexName" is required.');
+        apiErr.status = 400;
+        throw apiErr;
+      }
+
+      if (indexName !== ES_METADATA_INDEX) {
+        const apiErr = new Error(`Only "indexName" === "${ES_METADATA_INDEX}" is supported for now.`);
+        apiErr.status = 400;
+        throw apiErr;
+      }
+
+      esUtils.indexMetadata()
+        .then(() => {
+          res.status(200).json({ message: 'Data has been successfully migrated.' });
+        })
+        .catch(next);
+    } catch (err) {
+      next(err);
+    }
+  },
+];

src/routes/index.js

@@ -85,6 +85,8 @@ router.route('/v5/projects/admin/es/createIndex')
   .post(require('./admin/es-create-index'));
 router.route('/v5/projects/admin/es/deleteIndex')
   .delete(require('./admin/es-delete-index'));
+router.route('/v5/projects/admin/es/migrateFromDb')
+  .patch(require('./admin/es-migrate-from-db'));
 router.route('/v5/projects/admin/es/project/index')
   .post(require('./admin/project-index-create'));
 router.route('/v5/projects/admin/es/project/remove')