50 lines
1.5 KiB
TypeScript
50 lines
1.5 KiB
TypeScript
import * as plugins from './smartclickhouse.plugins';
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import { TimeDataTable } from './smartclickhouse.classes.timedatatable';
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export interface IClickhouseConstructorOptions {
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host: string;
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database: string;
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password?: string;
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}
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export class SmartClickHouseDb {
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public options: IClickhouseConstructorOptions;
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public clickhouseClient: plugins.clickhouse.ClickHouseClient;
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constructor(optionsArg: IClickhouseConstructorOptions) {
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this.options = optionsArg;
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}
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/**
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* starts the connection to the Clickhouse db
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*/
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public async start(dropOld = false) {
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console.log(`Connecting to default database first.`);
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const defaultClient = new plugins.clickhouse.ClickHouseClient({
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...this.options,
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database: 'default',
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});
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console.log(`Create database ${this.options.database}, if it does not exist...`);
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if (dropOld) {
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await defaultClient.queryPromise(`DROP DATABASE IF EXISTS ${this.options.database}`);
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}
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await defaultClient.queryPromise(`CREATE DATABASE IF NOT EXISTS ${this.options.database}`);
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console.log(`Ensured database. Now connecting to wanted database: ${this.options.database}`);
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this.clickhouseClient = new plugins.clickhouse.ClickHouseClient({
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...this.options,
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});
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console.log(`trying to ping database...`);
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const result = await this.clickhouseClient.ping();
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console.log(`Ping successfull?: ${result}`);
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}
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/**
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* gets a table
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*/
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public async getTable(tableName: string) {
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const newTable = TimeDataTable.getTable(this, tableName);
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return newTable;
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}
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}
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