1.0.48

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@apiclient.xyz/elasticsearch",
-  "version": "1.0.45",
+  "version": "1.0.48",
   "private": false,
   "description": "log to elasticsearch in a kibana compatible format",
   "main": "dist_ts/index.js",

test/test.nonci.ts

@@ -3,6 +3,7 @@ import { Qenv } from '@pushrocks/qenv';
 import * as elasticsearch from '../ts/index.js';
 
 let testElasticLog: elasticsearch.ElsSmartlogDestination<any>;
+let testElasticDoc: elasticsearch.ElasticDoc;
 
 tap.test('first test', async () => {
   testElasticLog = new elasticsearch.ElsSmartlogDestination({
@@ -35,4 +36,42 @@ tap.test('should send a message to Elasticsearch', async () => {
   });
 });
 
+tap.test('should create an ElasticDoc instance', async () => {
+  testElasticDoc = new elasticsearch.ElasticDoc({
+    index: 'testindex',
+    node: 'http://localhost:9200',
+    auth: {
+      username: 'elastic',
+      password: 'YourPassword'
+    }
+  });
+  expect(testElasticDoc).toBeInstanceOf(elasticsearch.ElasticDoc);
+});
+
+tap.test('should add and update documents in a piping session', async () => {
+  await testElasticDoc.startPipingSession();
+  await testElasticDoc.pipeDocument('1', { name: 'doc1' });
+  await testElasticDoc.pipeDocument('2', { name: 'doc2' });
+  await testElasticDoc.pipeDocument('1', { name: 'updated doc1' });
+});
+
+tap.test('should delete documents not part of the piping session', async () => {
+  await testElasticDoc.endPipingSession();
+});
+
+tap.test('should take and store snapshot', async () => {
+  await testElasticDoc.takeSnapshot(async (iterator, prevSnapshot) => {
+    const aggregationData = [];
+    for await (const doc of iterator) {
+      // Sample aggregation: counting documents
+      aggregationData.push(doc);
+    }
+    const snapshot = {
+      date: new Date().toISOString(),
+      aggregationData,
+    };
+    return snapshot;
+  });
+});
+
 tap.start();

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@apiclient.xyz/elasticsearch',
-  version: '1.0.45',
+  version: '1.0.48',
   description: 'log to elasticsearch in a kibana compatible format'
 }

ts/els.classes.elasticdoc.ts

@@ -0,0 +1,159 @@
+import { Client as ElasticClient } from '@elastic/elasticsearch';
+
+export interface IElasticDocConstructorOptions {
+  index: string;
+  node: string;
+  auth?: {
+    username: string;
+    password: string;
+  };
+}
+
+export interface ISnapshot {
+  date: string;
+  aggregationData: any;
+}
+
+export type SnapshotProcessor = (iterator: AsyncIterable<any>, prevSnapshot: ISnapshot | null) => Promise<ISnapshot>;
+
+export class ElasticDoc {
+  public client: ElasticClient;
+  public index: string;
+  private sessionDocs: Set<string> = new Set();
+  
+  private BATCH_SIZE = 1000;
+
+  constructor(options: IElasticDocConstructorOptions) {
+    this.client = new ElasticClient({
+      node: options.node,
+      ...(options.auth && { auth: options.auth }),
+    });
+    this.index = options.index;
+  }
+
+  async startPipingSession() {
+    this.sessionDocs.clear();
+  }
+
+  async pipeDocument(docId: string, doc: any) {
+    await this.client.index({
+      index: this.index,
+      id: docId,
+      body: doc,
+    });
+    this.sessionDocs.add(docId);
+  }
+
+  async endPipingSession() {
+    const allDocIds: string[] = [];
+    const responseQueue = [];
+    let response = await this.client.search({ index: this.index, scroll: '1m', size: this.BATCH_SIZE });
+    while (true) {
+      response.body.hits.hits.forEach((hit: any) => allDocIds.push(hit._id));
+      if (!response.body.hits.hits.length) {
+        break;
+      }
+      response = await this.client.scroll({ scroll_id: response.body._scroll_id, scroll: '1m' });
+    }
+
+    for (const docId of allDocIds) {
+      if (!this.sessionDocs.has(docId)) {
+        responseQueue.push({
+          delete: {
+            _index: this.index,
+            _id: docId,
+          },
+        });
+
+        if (responseQueue.length >= this.BATCH_SIZE) {
+          await this.client.bulk({ refresh: true, body: responseQueue });
+          responseQueue.length = 0;
+        }
+      }
+    }
+
+    if (responseQueue.length > 0) {
+      await this.client.bulk({ refresh: true, body: responseQueue });
+    }
+
+    this.sessionDocs.clear();
+  }
+
+  async takeSnapshot(processIterator: SnapshotProcessor) {
+    const snapshotIndex = `${this.index}_snapshots`;
+  
+    const { body: indexExists } = await this.client.indices.exists({ index: snapshotIndex });
+    if (!indexExists) {
+      await this.client.indices.create({ 
+        index: snapshotIndex,
+        body: {
+          mappings: {
+            properties: {
+              date: {
+                type: 'date'
+              },
+              aggregationData: {
+                type: 'object',
+                enabled: true
+              }
+            }
+          }
+        }
+      });
+    }
+  
+    const documentIterator = this.getDocumentIterator();
+  
+    const newSnapshot = await processIterator(documentIterator, await this.getLastSnapshot());
+  
+    await this.storeSnapshot(newSnapshot);
+  }
+
+private async getLastSnapshot(): Promise<ISnapshot | null> {
+    const snapshotIndex = `${this.index}_snapshots`;
+    const { body: indexExists } = await this.client.indices.exists({ index: snapshotIndex });
+
+    if (!indexExists) {
+      return null;
+    }
+
+    const response = await this.client.search({
+      index: snapshotIndex,
+      sort: 'date:desc',
+      size: 1
+    });
+
+    if (response.body.hits.hits.length > 0) {
+      const hit = response.body.hits.hits[0];
+      return {
+        date: hit._source.date,
+        aggregationData: hit._source.aggregationData,
+      };
+    } else {
+      return null;
+    }
+  }
+
+
+  private async *getDocumentIterator() {
+    let response = await this.client.search({ index: this.index, scroll: '1m', size: this.BATCH_SIZE });
+    while (true) {
+      for (const hit of response.body.hits.hits) {
+        yield hit._source;
+      }
+
+      if (!response.body.hits.hits.length) {
+        break;
+      }
+
+      response = await this.client.scroll({ scroll_id: response.body._scroll_id, scroll: '1m' });
+    }
+  }
+
+  private async storeSnapshot(snapshot: ISnapshot) {
+    await this.client.index({
+      index: `${this.index}_snapshots`,
+      body: snapshot,
+    });
+  }
+}

ts/index.ts

@@ -1 +1,2 @@
 export * from './els.classes.smartlogdestination.js';
+export * from './els.classes.elasticdoc.js';