Добавляем миграции в БД sqlite

server/core/SqliteConnectionPool.js

@@ -1,90 +0,0 @@
-const utils = require('./utils');
-const sqlite = require('sqlite');
-
-const waitingDelay = 100; //ms
-
-class SqliteConnectionPool {
-    constructor() {
-        this.closed = true;
-    }
-
-    async open(connCount, dbFileName) {
-        if (!Number.isInteger(connCount) || connCount <= 0)
-            return;
-        this.connections = [];
-        this.taken = new Set();
-        this.freed = new Set();
-
-        for (let i = 0; i < connCount; i++) {
-            let client = await sqlite.open(dbFileName);
-            client.configure('busyTimeout', 10000); //ms
-
-            client.ret = () => {
-                this.taken.delete(i);
-                this.freed.add(i);
-            };
-
-            this.freed.add(i);
-            this.connections[i] = client;
-        }
-        this.closed = false;
-    }
-
-    _setImmediate() {
-        return new Promise((resolve) => {
-            setImmediate(() => {
-                return resolve();
-            });
-        });
-    }
-
-    async get() {
-        if (this.closed)
-            return;
-
-        let freeConnIndex = this.freed.values().next().value;
-        if (freeConnIndex == null) {
-            if (waitingDelay)
-                await utils.sleep(waitingDelay);
-            return await this._setImmediate().then(() => this.get());
-        }
-
-        this.freed.delete(freeConnIndex);
-        this.taken.add(freeConnIndex);
-
-        return this.connections[freeConnIndex];
-    }
-
-    async run(query) {
-        const dbh = await this.get();
-        try {
-            let result = await dbh.run(query);
-            dbh.ret();
-            return result;
-        } catch (e) {
-            dbh.ret();
-            throw e;
-        }
-    }
-
-    async all(query) {
-        const dbh = await this.get();
-        try {
-            let result = await dbh.all(query);
-            dbh.ret();
-            return result;
-        } catch (e) {
-            dbh.ret();
-            throw e;
-        }
-    }
-
-    async close() {
-        for (let i = 0; i < this.connections.length; i++) {
-            await this.connections[i].close();
-        }
-        this.closed = true;
-    }
-}
-
-module.exports = SqliteConnectionPool;

server/core/connManager.js

@@ -1,26 +0,0 @@
-const SqliteConnectionPool = require('./SqliteConnectionPool');
-
-class ConnManager {
-    constructor() {
-        this._pool = {};
-    }
-
-    async init(config) {
-        this.config = config;
-        for (const poolConfig of this.config.db) {
-            const dbFileName = this.config.dataDir + '/' + poolConfig.fileName;
-            const connPool = new SqliteConnectionPool();
-            await connPool.open(poolConfig.connCount, dbFileName);
-
-            this._pool[poolConfig.poolName] = connPool;
-        }
-    }
-
-    get pool() {
-        return this._pool;
-    }
-}
-
-const connManager = new ConnManager();
-
-module.exports = connManager;