init

backend/dist/utils/clickhouse.js

@@ -0,0 +1,87 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.initClickHouse = void 0;
+const client_1 = require("@clickhouse/client");
+const config_1 = __importDefault(require("../config"));
+// Create ClickHouse client with error handling
+const createClickHouseClient = () => {
+    try {
+        return (0, client_1.createClient)({
+            host: `http://${config_1.default.clickhouse.host}:${config_1.default.clickhouse.port}`,
+            username: config_1.default.clickhouse.user,
+            password: config_1.default.clickhouse.password,
+            database: config_1.default.clickhouse.database,
+        });
+    }
+    catch (error) {
+        console.error('Error creating ClickHouse client:', error);
+        // Return a mock client for development that logs operations instead of executing them
+        return {
+            query: async ({ query, values }) => {
+                console.log('ClickHouse query (mock):', query, values);
+                return { rows: [] };
+            },
+            close: async () => {
+                console.log('ClickHouse connection closed (mock)');
+            }
+        };
+    }
+};
+const clickhouse = createClickHouseClient();
+// Initialize ClickHouse database and tables
+const initClickHouse = async () => {
+    try {
+        // Create database if not exists
+        await clickhouse.query({
+            query: `CREATE DATABASE IF NOT EXISTS ${config_1.default.clickhouse.database}`,
+        });
+        // Create tables for tracking events
+        await clickhouse.query({
+            query: `
+        CREATE TABLE IF NOT EXISTS ${config_1.default.clickhouse.database}.view_events (
+          user_id String,
+          content_id String,
+          timestamp DateTime DEFAULT now(),
+          ip String,
+          user_agent String
+        ) ENGINE = MergeTree()
+        PARTITION BY toYYYYMM(timestamp)
+        ORDER BY (user_id, content_id, timestamp)
+      `,
+        });
+        await clickhouse.query({
+            query: `
+        CREATE TABLE IF NOT EXISTS ${config_1.default.clickhouse.database}.like_events (
+          user_id String,
+          content_id String,
+          timestamp DateTime DEFAULT now(),
+          action Enum('like' = 1, 'unlike' = 2)
+        ) ENGINE = MergeTree()
+        PARTITION BY toYYYYMM(timestamp)
+        ORDER BY (user_id, content_id, timestamp)
+      `,
+        });
+        await clickhouse.query({
+            query: `
+        CREATE TABLE IF NOT EXISTS ${config_1.default.clickhouse.database}.follower_events (
+          follower_id String,
+          followed_id String,
+          timestamp DateTime DEFAULT now(),
+          action Enum('follow' = 1, 'unfollow' = 2)
+        ) ENGINE = MergeTree()
+        PARTITION BY toYYYYMM(timestamp)
+        ORDER BY (follower_id, followed_id, timestamp)
+      `,
+        });
+        console.log('ClickHouse database and tables initialized');
+    }
+    catch (error) {
+        console.error('Error initializing ClickHouse:', error);
+        console.log('Continuing with limited functionality...');
+    }
+};
+exports.initClickHouse = initClickHouse;
+exports.default = clickhouse;