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Your IP : 18.191.147.142
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mkdirp from \"mkdirp\"\nimport path from \"path\"\nimport { DriverPackageNotInstalledError } from \"../../error/DriverPackageNotInstalledError\"\nimport { SqliteQueryRunner } from \"./SqliteQueryRunner\"\nimport { PlatformTools } from \"../../platform/PlatformTools\"\nimport { DataSource } from \"../../data-source/DataSource\"\nimport { SqliteConnectionOptions } from \"./SqliteConnectionOptions\"\nimport { ColumnType } from \"../types/ColumnTypes\"\nimport { QueryRunner } from \"../../query-runner/QueryRunner\"\nimport { AbstractSqliteDriver } from \"../sqlite-abstract/AbstractSqliteDriver\"\nimport { ReplicationMode } from \"../types/ReplicationMode\"\nimport { filepathToName, isAbsolute } from \"../../util/PathUtils\"\n\n/**\n * Organizes communication with sqlite DBMS.\n */\nexport class SqliteDriver extends AbstractSqliteDriver {\n // -------------------------------------------------------------------------\n // Public Properties\n // -------------------------------------------------------------------------\n\n /**\n * Connection options.\n */\n options: SqliteConnectionOptions\n\n /**\n * SQLite underlying library.\n */\n sqlite: any\n\n // -------------------------------------------------------------------------\n // Constructor\n // -------------------------------------------------------------------------\n\n constructor(connection: DataSource) {\n super(connection)\n this.connection = connection\n this.options = connection.options as SqliteConnectionOptions\n this.database = this.options.database\n\n // load sqlite package\n this.loadDependencies()\n }\n\n // -------------------------------------------------------------------------\n // Public Methods\n // -------------------------------------------------------------------------\n\n /**\n * Closes connection with database.\n */\n async disconnect(): Promise<void> {\n return new Promise<void>((ok, fail) => {\n this.queryRunner = undefined\n this.databaseConnection.close((err: any) =>\n err ? fail(err) : ok(),\n )\n })\n }\n\n /**\n * Creates a query runner used to execute database queries.\n */\n createQueryRunner(mode: ReplicationMode): QueryRunner {\n if (!this.queryRunner) this.queryRunner = new SqliteQueryRunner(this)\n\n return this.queryRunner\n }\n\n normalizeType(column: {\n type?: ColumnType\n length?: number | string\n precision?: number | null\n scale?: number\n }): string {\n if ((column.type as any) === Buffer) {\n return \"blob\"\n }\n\n return super.normalizeType(column)\n }\n\n async afterConnect(): Promise<void> {\n return this.attachDatabases()\n }\n\n /**\n * For SQLite, the database may be added in the decorator metadata. It will be a filepath to a database file.\n */\n buildTableName(\n tableName: string,\n _schema?: string,\n database?: string,\n ): string {\n if (!database) return tableName\n if (this.getAttachedDatabaseHandleByRelativePath(database))\n return `${this.getAttachedDatabaseHandleByRelativePath(\n database,\n )}.${tableName}`\n\n if (database === this.options.database) return tableName\n\n // we use the decorated name as supplied when deriving attach handle (ideally without non-portable absolute path)\n const identifierHash = filepathToName(database)\n // decorated name will be assumed relative to main database file when non absolute. Paths supplied as absolute won't be portable\n const absFilepath = isAbsolute(database)\n ? database\n : path.join(this.getMainDatabasePath(), database)\n\n this.attachedDatabases[database] = {\n attachFilepathAbsolute: absFilepath,\n attachFilepathRelative: database,\n attachHandle: identifierHash,\n }\n\n return `${identifierHash}.${tableName}`\n }\n\n // -------------------------------------------------------------------------\n // Protected Methods\n // -------------------------------------------------------------------------\n\n /**\n * Creates connection with the database.\n */\n protected async createDatabaseConnection() {\n if (\n this.options.flags === undefined ||\n !(this.options.flags & this.sqlite.OPEN_URI)\n ) {\n await this.createDatabaseDirectory(this.options.database)\n }\n\n const databaseConnection: any = await new Promise((ok, fail) => {\n if (this.options.flags === undefined) {\n const connection = new this.sqlite.Database(\n this.options.database,\n (err: any) => {\n if (err) return fail(err)\n ok(connection)\n },\n )\n } else {\n const connection = new this.sqlite.Database(\n this.options.database,\n this.options.flags,\n (err: any) => {\n if (err) return fail(err)\n ok(connection)\n },\n )\n }\n })\n\n // Internal function to run a command on the connection and fail if an error occured.\n function run(line: string): Promise<void> {\n return new Promise((ok, fail) => {\n databaseConnection.run(line, (err: any) => {\n if (err) return fail(err)\n ok()\n })\n })\n }\n // in the options, if encryption key for SQLCipher is setted.\n // Must invoke key pragma before trying to do any other interaction with the database.\n if (this.options.key) {\n await run(`PRAGMA key = ${JSON.stringify(this.options.key)}`)\n }\n\n if (this.options.enableWAL) {\n await run(`PRAGMA journal_mode = WAL`)\n }\n\n if (\n this.options.busyTimeout &&\n typeof this.options.busyTimeout === \"number\" &&\n this.options.busyTimeout > 0\n ) {\n await run(`PRAGMA busy_timeout = ${this.options.busyTimeout}`)\n }\n\n // we need to enable foreign keys in sqlite to make sure all foreign key related features\n // working properly. this also makes onDelete to work with sqlite.\n await run(`PRAGMA foreign_keys = ON`)\n\n return databaseConnection\n }\n\n /**\n * If driver dependency is not given explicitly, then try to load it via \"require\".\n */\n protected loadDependencies(): void {\n try {\n const sqlite = this.options.driver || PlatformTools.load(\"sqlite3\")\n this.sqlite = sqlite.verbose()\n } catch (e) {\n throw new DriverPackageNotInstalledError(\"SQLite\", \"sqlite3\")\n }\n }\n\n /**\n * Auto creates database directory if it does not exist.\n */\n protected async createDatabaseDirectory(fullPath: string): Promise<void> {\n await mkdirp(path.dirname(fullPath))\n }\n\n /**\n * Performs the attaching of the database files. The attachedDatabase should have been populated during calls to #buildTableName\n * during EntityMetadata production (see EntityMetadata#buildTablePath)\n *\n * https://sqlite.org/lang_attach.html\n */\n protected async attachDatabases() {\n // @todo - possibly check number of databases (but unqueriable at runtime sadly) - https://www.sqlite.org/limits.html#max_attached\n for await (const {\n attachHandle,\n attachFilepathAbsolute,\n } of Object.values(this.attachedDatabases)) {\n await this.createDatabaseDirectory(attachFilepathAbsolute)\n await this.connection.query(\n `ATTACH \"${attachFilepathAbsolute}\" AS \"${attachHandle}\"`,\n )\n }\n }\n\n protected getMainDatabasePath(): string {\n const optionsDb = this.options.database\n return path.dirname(\n isAbsolute(optionsDb)\n ? optionsDb\n : path.join(process.cwd(), optionsDb),\n )\n }\n}\n"],"sourceRoot":"../.."}