mirror of
https://github.com/laurent22/joplin.git
synced 2024-12-24 10:27:10 +02:00
313 lines
7.9 KiB
JavaScript
313 lines
7.9 KiB
JavaScript
const { uuid } = require('lib/uuid.js');
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const { promiseChain } = require('lib/promise-utils.js');
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const { Logger } = require('lib/logger.js');
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const { time } = require('lib/time-utils.js');
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const { sprintf } = require('sprintf-js');
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class Database {
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constructor(driver) {
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this.debugMode_ = false;
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this.driver_ = driver;
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this.inTransaction_ = false;
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this.logger_ = new Logger();
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this.logExcludedQueryTypes_ = [];
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}
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setLogExcludedQueryTypes(v) {
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this.logExcludedQueryTypes_ = v;
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}
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// Converts the SQLite error to a regular JS error
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// so that it prints a stacktrace when passed to
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// console.error()
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sqliteErrorToJsError(error, sql = null, params = null) {
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return this.driver().sqliteErrorToJsError(error, sql, params);
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}
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setLogger(l) {
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this.logger_ = l;
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}
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logger() {
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return this.logger_;
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}
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driver() {
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return this.driver_;
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}
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async open(options) {
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await this.driver().open(options);
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this.logger().info('Database was open successfully');
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}
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escapeField(field) {
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if (field == '*') return '*';
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let p = field.split('.');
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if (p.length == 1) return '`' + field + '`';
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if (p.length == 2) return p[0] + '.`' + p[1] + '`';
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throw new Error('Invalid field format: ' + field);
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}
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escapeFields(fields) {
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if (fields == '*') return '*';
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let output = [];
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for (let i = 0; i < fields.length; i++) {
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output.push(this.escapeField(fields[i]));
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}
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return output;
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}
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async tryCall(callName, sql, params) {
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if (typeof sql === 'object') {
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params = sql.params;
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sql = sql.sql;
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}
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let waitTime = 50;
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let totalWaitTime = 0;
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while (true) {
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try {
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this.logQuery(sql, params);
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let result = await this.driver()[callName](sql, params);
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return result; // No exception was thrown
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} catch (error) {
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if (error && (error.code == 'SQLITE_IOERR' || error.code == 'SQLITE_BUSY')) {
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if (totalWaitTime >= 20000) throw this.sqliteErrorToJsError(error, sql, params);
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this.logger().warn(sprintf('Error %s: will retry in %s milliseconds', error.code, waitTime));
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this.logger().warn('Error was: ' + error.toString());
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await time.msleep(waitTime);
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totalWaitTime += waitTime;
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waitTime *= 1.5;
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} else {
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throw this.sqliteErrorToJsError(error, sql, params);
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}
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}
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}
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}
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async selectOne(sql, params = null) {
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return this.tryCall('selectOne', sql, params);
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}
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async selectAll(sql, params = null) {
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return this.tryCall('selectAll', sql, params);
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}
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async exec(sql, params = null) {
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return this.tryCall('exec', sql, params);
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}
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transactionExecBatch(queries) {
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if (queries.length <= 0) return Promise.resolve();
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if (queries.length == 1) {
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let q = this.wrapQuery(queries[0]);
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return this.exec(q.sql, q.params);
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}
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// There can be only one transaction running at a time so queue
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// any new transaction here.
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if (this.inTransaction_) {
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return new Promise((resolve, reject) => {
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let iid = setInterval(() => {
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if (!this.inTransaction_) {
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clearInterval(iid);
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this.transactionExecBatch(queries).then(() => {
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resolve();
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}).catch((error) => {
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reject(error);
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});
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}
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}, 100);
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});
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}
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this.inTransaction_ = true;
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queries.splice(0, 0, 'BEGIN TRANSACTION');
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queries.push('COMMIT'); // Note: ROLLBACK is currently not supported
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let chain = [];
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for (let i = 0; i < queries.length; i++) {
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let query = this.wrapQuery(queries[i]);
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chain.push(() => {
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return this.exec(query.sql, query.params);
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});
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}
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return promiseChain(chain).then(() => {
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this.inTransaction_ = false;
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});
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}
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static enumId(type, s) {
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if (type == 'settings') {
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if (s == 'int') return 1;
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if (s == 'string') return 2;
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}
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if (type == 'fieldType') {
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if (s == 'INTEGER') s = 'INT';
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if (!(('TYPE_' + s) in this)) throw new Error('Unkonwn fieldType: ' + s);
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return this['TYPE_' + s];
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}
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if (type == 'syncTarget') {
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if (s == 'memory') return 1;
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if (s == 'filesystem') return 2;
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if (s == 'onedrive') return 3;
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}
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throw new Error('Unknown enum type or value: ' + type + ', ' + s);
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}
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static formatValue(type, value) {
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if (value === null || value === undefined) return null;
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if (type == this.TYPE_INT) return Number(value);
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if (type == this.TYPE_TEXT) return value;
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if (type == this.TYPE_NUMERIC) return Number(value);
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throw new Error('Unknown type: ' + type);
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}
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sqlStringToLines(sql) {
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let output = [];
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let lines = sql.split("\n");
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let statement = '';
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for (var i = 0; i < lines.length; i++) {
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var line = lines[i];
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if (line == '') continue;
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if (line.substr(0, 2) == "--") continue;
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statement += line.trim();
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if (line[line.length - 1] == ',') statement += ' ';
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if (line[line.length - 1] == ';') {
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output.push(statement);
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statement = '';
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}
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}
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return output;
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}
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logQuery(sql, params = null) {
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if (this.logExcludedQueryTypes_.length) {
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const temp = sql.toLowerCase();
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for (let i = 0; i < this.logExcludedQueryTypes_.length; i++) {
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if (temp.indexOf(this.logExcludedQueryTypes_[i].toLowerCase()) === 0) return;
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}
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}
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this.logger().debug(sql);
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if (params !== null && params.length) this.logger().debug(JSON.stringify(params));
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}
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static insertQuery(tableName, data) {
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if (!data || !Object.keys(data).length) throw new Error('Data is empty');
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let keySql= '';
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let valueSql = '';
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let params = [];
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for (let key in data) {
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if (!data.hasOwnProperty(key)) continue;
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if (key[key.length - 1] == '_') continue;
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if (keySql != '') keySql += ', ';
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if (valueSql != '') valueSql += ', ';
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keySql += '`' + key + '`';
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valueSql += '?';
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params.push(data[key]);
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}
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return {
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sql: 'INSERT INTO `' + tableName + '` (' + keySql + ') VALUES (' + valueSql + ')',
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params: params,
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};
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}
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static updateQuery(tableName, data, where) {
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if (!data || !Object.keys(data).length) throw new Error('Data is empty');
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let sql = '';
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let params = [];
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for (let key in data) {
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if (!data.hasOwnProperty(key)) continue;
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if (key[key.length - 1] == '_') continue;
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if (sql != '') sql += ', ';
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sql += '`' + key + '`=?';
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params.push(data[key]);
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}
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if (typeof where != 'string') {
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let s = [];
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for (let n in where) {
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if (!where.hasOwnProperty(n)) continue;
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params.push(where[n]);
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s.push('`' + n + '`=?');
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}
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where = s.join(' AND ');
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}
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return {
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sql: 'UPDATE `' + tableName + '` SET ' + sql + ' WHERE ' + where,
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params: params,
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};
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}
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alterColumnQueries(tableName, fields) {
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let fieldsNoType = [];
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for (let n in fields) {
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if (!fields.hasOwnProperty(n)) continue;
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fieldsNoType.push(n);
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}
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let fieldsWithType = [];
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for (let n in fields) {
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if (!fields.hasOwnProperty(n)) continue;
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fieldsWithType.push(this.escapeField(n) + ' ' + fields[n]);
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}
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let sql = `
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CREATE TEMPORARY TABLE _BACKUP_TABLE_NAME_(_FIELDS_TYPE_);
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INSERT INTO _BACKUP_TABLE_NAME_ SELECT _FIELDS_NO_TYPE_ FROM _TABLE_NAME_;
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DROP TABLE _TABLE_NAME_;
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CREATE TABLE _TABLE_NAME_(_FIELDS_TYPE_);
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INSERT INTO _TABLE_NAME_ SELECT _FIELDS_NO_TYPE_ FROM _BACKUP_TABLE_NAME_;
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DROP TABLE _BACKUP_TABLE_NAME_;
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`;
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sql = sql.replace(/_BACKUP_TABLE_NAME_/g, this.escapeField(tableName + '_backup'));
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sql = sql.replace(/_TABLE_NAME_/g, this.escapeField(tableName));
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sql = sql.replace(/_FIELDS_NO_TYPE_/g, this.escapeFields(fieldsNoType).join(','));
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sql = sql.replace(/_FIELDS_TYPE_/g, fieldsWithType.join(','));
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return sql.trim().split("\n");
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}
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wrapQueries(queries) {
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let output = [];
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for (let i = 0; i < queries.length; i++) {
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output.push(this.wrapQuery(queries[i]));
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}
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return output;
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}
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wrapQuery(sql, params = null) {
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if (!sql) throw new Error('Cannot wrap empty string: ' + sql);
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if (sql.constructor === Array) {
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let output = {};
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output.sql = sql[0];
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output.params = sql.length >= 2 ? sql[1] : null;
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return output;
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} else if (typeof sql === 'string') {
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return { sql: sql, params: params };
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} else {
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return sql; // Already wrapped
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}
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}
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}
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Database.TYPE_INT = 1;
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Database.TYPE_TEXT = 2;
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Database.TYPE_NUMERIC = 3;
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module.exports = { Database }; |