62 lines
2.2 KiB
TypeScript
62 lines
2.2 KiB
TypeScript
import * as plugins from './smartclickhouse.plugins.js';
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import { TimeDataTable } from './smartclickhouse.classes.timedatatable.js';
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export interface IClickhouseConstructorOptions {
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url: 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 defaultOptions: {[keyArg: string]: string} = {};
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// the protocol, url and host
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const parsedUrl = plugins.smarturl.Smarturl.createFromUrl(this.options.url);
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parsedUrl.protocol === 'https' ? defaultOptions.protocol = plugins.clickhouse.ClickHouseConnectionProtocol.HTTPS : null;
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parsedUrl.protocol === 'http' ? defaultOptions.protocol = plugins.clickhouse.ClickHouseConnectionProtocol.HTTP : null;
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defaultOptions.host = parsedUrl.hostname;
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defaultOptions.port = parsedUrl.port;
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// the database
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defaultOptions.database = this.options.database;
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// the password
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this.options.password ? defaultOptions.password = this.options.password : null;
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// lets connect
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const defaultClient = new plugins.clickhouse.ClickHouseClient({
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...defaultOptions,
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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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...defaultOptions
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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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