127 lines
3.4 KiB
TypeScript
127 lines
3.4 KiB
TypeScript
import { createClient } from '@clickhouse/client';
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import type { EventsQueryParams } from './types';
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// ClickHouse 客户端配置
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const clickhouse = createClient({
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url: process.env.CLICKHOUSE_URL,
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username: process.env.CLICKHOUSE_USER ,
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password: process.env.CLICKHOUSE_PASSWORD ,
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database: process.env.CLICKHOUSE_DATABASE
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});
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// 构建日期过滤条件
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function buildDateFilter(startTime?: string, endTime?: string): string {
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const filters = [];
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if (startTime) {
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filters.push(`event_time >= parseDateTimeBestEffort('${startTime}')`);
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}
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if (endTime) {
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filters.push(`event_time <= parseDateTimeBestEffort('${endTime}')`);
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}
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return filters.length > 0 ? `WHERE ${filters.join(' AND ')}` : '';
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}
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// 字符串转义函数
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function escapeString(str: string): string {
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return str.replace(/'/g, "\\'");
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}
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// 构建通用过滤条件
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export function buildFilter(params: Partial<EventsQueryParams>): string {
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const filters = [];
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// 时间范围过滤
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if (params.startTime || params.endTime) {
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const dateFilter = buildDateFilter(params.startTime, params.endTime).replace('WHERE ', '');
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if (dateFilter) {
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filters.push(dateFilter);
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}
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}
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// 事件类型过滤
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if (params.eventType) {
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filters.push(`event_type = '${escapeString(params.eventType)}'`);
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}
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// 链接ID过滤
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if (params.linkId) {
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filters.push(`link_id = '${escapeString(params.linkId)}'`);
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}
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// 链接短码过滤
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if (params.linkSlug) {
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filters.push(`link_slug = '${escapeString(params.linkSlug)}'`);
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}
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// 用户ID过滤
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if (params.userId) {
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filters.push(`user_id = '${escapeString(params.userId)}'`);
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}
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// 团队ID过滤
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if (params.teamId) {
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filters.push(`team_id = '${escapeString(params.teamId)}'`);
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}
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// 项目ID过滤
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if (params.projectId) {
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filters.push(`project_id = '${escapeString(params.projectId)}'`);
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}
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// 标签筛选
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if (params.tags && params.tags.length > 0) {
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const tagConditions = params.tags.map(tag =>
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`JSONHas(JSONExtractArrayRaw(link_tags), JSON_QUOTE('${escapeString(tag)}'))`
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);
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filters.push(`(${tagConditions.join(' OR ')})`);
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}
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// Slug 模糊搜索
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if (params.searchSlug) {
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filters.push(`positionCaseInsensitive(link_slug, '${escapeString(params.searchSlug)}') > 0`);
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}
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return filters.length > 0 ? `WHERE ${filters.join(' AND ')}` : '';
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}
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// 构建分页
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export function buildPagination(page?: number, pageSize?: number): string {
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const limit = pageSize || 20;
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const offset = ((page || 1) - 1) * limit;
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return `LIMIT ${limit} OFFSET ${offset}`;
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}
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// 构建排序
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export function buildOrderBy(sortBy?: string, sortOrder?: 'asc' | 'desc'): string {
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if (!sortBy) {
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return 'ORDER BY event_time DESC';
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}
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return `ORDER BY ${sortBy} ${sortOrder || 'desc'}`;
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}
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// 执行查询并处理错误
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export async function executeQuery<T>(query: string): Promise<T[]> {
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try {
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const resultSet = await clickhouse.query({
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query,
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format: 'JSONEachRow'
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});
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const rows = await resultSet.json<T>();
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return Array.isArray(rows) ? rows : [rows];
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} catch (error) {
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console.error('ClickHouse query error:', error);
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throw error;
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}
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}
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// 执行查询并返回单个结果
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export async function executeQuerySingle<T>(query: string): Promise<T | null> {
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const results = await executeQuery<T>(query);
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return results.length > 0 ? results[0] : null;
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}
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export default clickhouse;
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