# Added Sample code for rollups

Signed-off-by: Theo Truong <theotr@amazon.com>

samples/rollups.js

@@ -0,0 +1,146 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ */
+
+// const { Client } = require('@opensearch-project/opensearch');
+const {Client} = require('../index.js') // from 'opensearch-project/opensearch
+
+// Instantiate a client with basic auth as setup in the README.md file
+const client = new Client({
+  ssl: {
+    rejectUnauthorized: false,
+  },
+  node: 'https://localhost:9200',
+  auth: {
+    username: 'admin',
+    password: 'myStrongPassword123!',
+  },
+});
+
+const start = async () => {
+  const sourceIndex = 'sample-index';
+  const rollupIndex = 'rollup-index';
+  const jobId = 'my-rollup-job';
+
+
+  // await client.rollups.delete({ id: jobId });
+  if ((await client.indices.exists({ index: sourceIndex })).body)
+    await client.indices.delete({ index: sourceIndex });
+  if ((await client.indices.exists({ index: rollupIndex })).body)
+    await client.indices.delete({ index: rollupIndex });
+
+  ///////////////////  SETUP //////////////////
+
+  // Create source index
+  await client.indices.create({
+    index: sourceIndex,
+    body: {
+      mappings: {
+        properties: {
+          timestamp: { type: 'date' },
+          field1: { type: 'keyword' },
+          field2: { type: 'integer' }
+        }
+      }
+    }
+  });
+
+  // Add some documents to the index
+  const now = Date.now();
+  for (let i = 0; i < 100; i++) {
+    await client.index({
+      index: sourceIndex,
+      body: {
+        timestamp: new Date(now - i * 3600000), // Subtract 1 hour for each document
+        field1: `field1_value_${i % 10}`, // Cycle through 10 different values
+        field2: i
+      }
+    });
+  }
+
+  // Refresh the index to make sure all documents are searchable
+  await client.indices.refresh({ index: sourceIndex });
+  ////////////  ROLLUPS OPERATIONS ////////////
+  // Create a rollup job
+  await client.rollups.put({
+    id: jobId,
+    body: {
+      rollup: {
+        description: "sample rollup",
+        source_index: sourceIndex,
+        target_index: rollupIndex,
+        schedule: {
+          interval: {
+            period: 1,
+            unit: "Minutes",
+            start_time: 1602100553
+          }
+        },
+        page_size: 10,
+        delay: "0",
+        continuous: false,
+        dimensions: [
+          {
+            date_histogram: {
+              source_field: "timestamp",
+              fixed_interval: "1440m",
+              timezone: "UTC"
+            }
+          },
+          {
+            terms: {
+              source_field: "field1"
+            }
+          }
+        ],
+        metrics: [
+          {
+            source_field: "field2",
+            metrics: [
+              {
+                avg: {}
+              },
+              {
+                max: {}
+              }
+            ]
+          }
+        ]
+      }
+    }
+  });
+
+  // Start the rollup job
+  await client.rollups.start({ id: jobId });
+
+  // Check the rollup job
+  const status = await client.rollups.get({ id: jobId });
+  console.log('Running Rollup Job:')
+  console.log(status.body);
+
+  // Wait till the rollup index is created
+  while (!(await client.indices.exists({ index: rollupIndex })).body) {
+    await new Promise(resolve => setTimeout(resolve, 5000));
+  }
+
+  // Explain the rollup job
+  const explain = await client.rollups.explain({ id: jobId });
+  console.log('Rollup Job Explanation:')
+  console.log(explain.body);
+
+  // Stop the rollup job
+  await client.rollups.stop({ id: jobId });
+
+  /////////////////  TEAR DOWN ///////////////
+  await client.indices.delete({ index: sourceIndex });
+  await client.indices.delete({ index: rollupIndex });
+  await client.rollups.delete({ id: jobId });
+};
+
+start().then(() => console.log('done'));