mirror of
https://github.com/laurent22/joplin.git
synced 2024-12-24 10:27:10 +02:00
362 lines
9.5 KiB
JavaScript
362 lines
9.5 KiB
JavaScript
const Logger = require('lib/Logger').default;
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const { time } = require('lib/time-utils.js');
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const Mutex = require('async-mutex').Mutex;
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const shim = require('lib/shim').default;
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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.logger_ = new Logger();
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this.logExcludedQueryTypes_ = [];
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this.batchTransactionMutex_ = new Mutex();
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this.profilingEnabled_ = false;
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this.queryId_ = 1;
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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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try {
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await this.driver().open(options);
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} catch (error) {
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throw new Error(`Cannot open database: ${error.message}: ${JSON.stringify(options)}`);
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}
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this.logger().info('Database was open successfully');
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}
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escapeField(field) {
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if (field == '*') return '*';
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const p = field.split('.');
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if (p.length == 1) return `\`${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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const 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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const callStartTime = Date.now();
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let profilingTimeoutId = null;
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while (true) {
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try {
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this.logQuery(sql, params);
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const queryId = this.queryId_++;
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if (this.profilingEnabled_) {
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console.info(`SQL START ${queryId}`, sql, params);
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profilingTimeoutId = shim.setInterval(() => {
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console.warn(`SQL ${queryId} has been running for ${Date.now() - callStartTime}: ${sql}`);
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}, 3000);
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}
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const result = await this.driver()[callName](sql, params);
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if (this.profilingEnabled_) {
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shim.clearInterval(profilingTimeoutId);
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profilingTimeoutId = null;
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const elapsed = Date.now() - callStartTime;
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if (elapsed > 10) console.info(`SQL END ${queryId}`, elapsed, sql, params);
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}
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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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// NOTE: don't put logger statements here because it might log to the database, which
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// could result in an error being thrown again.
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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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} finally {
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if (profilingTimeoutId) shim.clearInterval(profilingTimeoutId);
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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 loadExtension(/* path */) {
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return; // Disabled for now as fuzzy search extension is not in use
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// let result = null;
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// try {
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// result = await this.driver().loadExtension(path);
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// return result;
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// } catch (e) {
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// throw new Error(`Could not load extension ${path}`);
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// }
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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 selectAllFields(sql, params, field) {
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const rows = await this.tryCall('selectAll', sql, params);
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const output = [];
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for (let i = 0; i < rows.length; i++) {
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const v = rows[i][field];
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if (!v) throw new Error(`No such field: ${field}. Query was: ${sql}`);
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output.push(rows[i][field]);
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}
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return output;
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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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async transactionExecBatch(queries) {
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if (queries.length <= 0) return;
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if (queries.length == 1) {
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const q = this.wrapQuery(queries[0]);
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await this.exec(q.sql, q.params);
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return;
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}
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// There can be only one transaction running at a time so use a mutex
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const release = await this.batchTransactionMutex_.acquire();
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try {
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await this.exec('BEGIN TRANSACTION');
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for (let i = 0; i < queries.length; i++) {
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const query = this.wrapQuery(queries[i]);
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await this.exec(query.sql, query.params);
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}
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await this.exec('COMMIT');
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} catch (error) {
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await this.exec('ROLLBACK');
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throw error;
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} finally {
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release();
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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) s = s.toUpperCase();
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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 enumName(type, id) {
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if (type === 'fieldType') {
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if (id === Database.TYPE_UNKNOWN) return 'unknown';
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if (id === Database.TYPE_INT) return 'int';
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if (id === Database.TYPE_TEXT) return 'text';
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if (id === Database.TYPE_NUMERIC) return 'numeric';
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throw new Error(`Invalid type id: ${id}`);
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}
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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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const output = [];
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const lines = sql.split('\n');
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let statement = '';
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for (let i = 0; i < lines.length; i++) {
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const 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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const params = [];
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for (const 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 (${valueSql})`,
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params: params,
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};
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}
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static updateQuery(tableName, data, where) {
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if (!data || !Object.keys(data).length) throw new Error('Data is empty');
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let sql = '';
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const params = [];
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for (const key in data) {
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if (!data.hasOwnProperty(key)) continue;
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if (key[key.length - 1] == '_') continue;
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if (sql != '') sql += ', ';
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sql += `\`${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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const s = [];
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for (const 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 ${where}`,
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params: params,
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};
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}
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alterColumnQueries(tableName, fields) {
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const fieldsNoType = [];
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for (const n in fields) {
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if (!fields.hasOwnProperty(n)) continue;
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fieldsNoType.push(n);
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}
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const fieldsWithType = [];
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for (const n in fields) {
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if (!fields.hasOwnProperty(n)) continue;
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fieldsWithType.push(`${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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const 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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const 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_UNKNOWN = 0;
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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 };
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