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najdôležitejší zdrojový súbor, slúži na indexovanie dát do ES

pages/students/2016/jan_holp/dp2021/elasticsearch.js

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+
+const elasticsearch = require('elasticsearch');
+const fs = require('fs');
+const readline = require('readline');
+
+const client = new elasticsearch.Client({
+    hosts: [ 'http://localhost:9200']
+});
+
+client.indices.create({
+    index: 'skweb'
+}, function(error, response, status) {
+    if (error) {
+        console.log(error);
+    } else {
+        console.log("created a new index", response);
+    }
+});
+
+const bulkIndex = function bulkIndex(index, type, data) {
+	let bulkBody = [];
+	id = 1;
+const errorCount = 0;
+	data.forEach(item => {
+		bulkBody.push({
+			index: {
+				_index: index,
+				_type:  type,
+				_id :   id++,
+			}
+		});
+		bulkBody.push(item);
+	});
+        console.log(bulkBody);
+	client.bulk({body: bulkBody})
+		.then(response => {
+
+			response.items.forEach(item => {
+				if (item.index && item.index.error) {
+					console.log(++errorCount, item.index.error);
+				}
+			});
+			console.log(
+				`Successfully indexed ${data.length - errorCount}
+				out of ${data.length} items`
+			);
+		})
+		.catch(console.err);
+};
+
+async  function indexData() {
+
+   let documents = [];
+   const readInterface = readline.createInterface({
+      input: fs.createReadStream('/home/elastic/BP/skweb/server/text.txt'),
+//    output: process.stdout,
+      console: false
+   });
+   readInterface.on('line', function(line) {  
+      const article = JSON.parse(line);
+      documents.push(article);
+
+    });
+      readInterface.on('close', function() {
+        console.log(documents);  
+	 bulkIndex('skweb', 'web_page', documents);
+      });
+
+
+  }
+
+  indexData();