112 lines
2.3 KiB
TypeScript
112 lines
2.3 KiB
TypeScript
import * as plugins from './els.plugins.js';
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import { Client as ElasticClient } from '@elastic/elasticsearch';
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export interface IElasticKVStoreConstructorOptions {
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index: string;
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node: string;
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auth?: {
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username: string;
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password: string;
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};
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}
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export class ElasticKVStore {
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public client: ElasticClient;
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public index: string;
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private readyDeferred: any;
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constructor(options: IElasticKVStoreConstructorOptions) {
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this.client = new ElasticClient({
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node: options.node,
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...(options.auth && { auth: options.auth }),
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});
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this.index = options.index;
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this.readyDeferred = plugins.smartpromise.defer();
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this.setupIndex();
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}
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private async setupIndex() {
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try {
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const indexExists = await this.client.indices.exists({ index: this.index });
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if (!indexExists) {
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await this.client.indices.create({
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index: this.index,
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body: {
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mappings: {
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properties: {
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key: {
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type: 'keyword'
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},
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value: {
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type: 'text'
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}
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}
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}
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}
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});
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}
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this.readyDeferred.resolve();
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} catch (err) {
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this.readyDeferred.reject(err);
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}
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}
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async set(key: string, value: string) {
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await this.readyDeferred.promise;
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await this.client.index({
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index: this.index,
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id: key,
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body: {
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key,
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value
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}
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});
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}
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async get(key: string): Promise<string | null> {
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await this.readyDeferred.promise;
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try {
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const response = await this.client.get({
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index: this.index,
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id: key
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});
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return response._source['value'];
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} catch (error) {
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if (error.meta && error.meta.statusCode === 404) {
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return null;
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}
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throw error;
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}
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}
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async delete(key: string) {
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await this.readyDeferred.promise;
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try {
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await this.client.delete({
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index: this.index,
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id: key
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});
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} catch (error) {
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if (error.meta && error.meta.statusCode !== 404) {
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throw error;
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}
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}
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}
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async clear() {
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await this.readyDeferred.promise;
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await this.client.deleteByQuery({
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index: this.index,
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body: {
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query: {
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match_all: {}
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}
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}
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});
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}
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}
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