/
AuroraDataApiDriver.ts
836 lines (716 loc) · 29.1 KB
/
AuroraDataApiDriver.ts
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import {Driver} from "../Driver";
import {DriverUtils} from "../DriverUtils";
import {AuroraDataApiQueryRunner} from "./AuroraDataApiQueryRunner";
import {ObjectLiteral} from "../../common/ObjectLiteral";
import {ColumnMetadata} from "../../metadata/ColumnMetadata";
import {DateUtils} from "../../util/DateUtils";
import {PlatformTools} from "../../platform/PlatformTools";
import {Connection} from "../../connection/Connection";
import {RdbmsSchemaBuilder} from "../../schema-builder/RdbmsSchemaBuilder";
import {AuroraDataApiConnectionOptions} from "./AuroraDataApiConnectionOptions";
import {MappedColumnTypes} from "../types/MappedColumnTypes";
import {ColumnType} from "../types/ColumnTypes";
import {DataTypeDefaults} from "../types/DataTypeDefaults";
import {TableColumn} from "../../schema-builder/table/TableColumn";
import {AuroraDataApiConnectionCredentialsOptions} from "./AuroraDataApiConnectionCredentialsOptions";
import {EntityMetadata} from "../../metadata/EntityMetadata";
import {OrmUtils} from "../../util/OrmUtils";
import {ApplyValueTransformers} from "../../util/ApplyValueTransformers";
/**
* Organizes communication with MySQL DBMS.
*/
export class AuroraDataApiDriver implements Driver {
// -------------------------------------------------------------------------
// Public Properties
// -------------------------------------------------------------------------
connection: Connection;
/**
* Aurora Data API underlying library.
*/
DataApiDriver: any;
client: any;
/**
* Connection pool.
* Used in non-replication mode.
*/
pool: any;
/**
* Pool cluster used in replication mode.
*/
poolCluster: any;
// -------------------------------------------------------------------------
// Public Implemented Properties
// -------------------------------------------------------------------------
/**
* Connection options.
*/
options: AuroraDataApiConnectionOptions;
/**
* Master database used to perform all write queries.
*/
database?: string;
/**
* Indicates if replication is enabled.
*/
isReplicated: boolean = false;
/**
* Indicates if tree tables are supported by this driver.
*/
treeSupport = true;
/**
* Gets list of supported column data types by a driver.
*
* @see https://www.tutorialspoint.com/mysql/mysql-data-types.htm
* @see https://dev.mysql.com/doc/refman/8.0/en/data-types.html
*/
supportedDataTypes: ColumnType[] = [
// numeric types
"bit",
"int",
"integer", // synonym for int
"tinyint",
"smallint",
"mediumint",
"bigint",
"float",
"double",
"double precision", // synonym for double
"real", // synonym for double
"decimal",
"dec", // synonym for decimal
"numeric", // synonym for decimal
"fixed", // synonym for decimal
"bool", // synonym for tinyint
"boolean", // synonym for tinyint
// date and time types
"date",
"datetime",
"timestamp",
"time",
"year",
// string types
"char",
"nchar", // synonym for national char
"national char",
"varchar",
"nvarchar", // synonym for national varchar
"national varchar",
"blob",
"text",
"tinyblob",
"tinytext",
"mediumblob",
"mediumtext",
"longblob",
"longtext",
"enum",
"binary",
"varbinary",
// json data type
"json",
// spatial data types
"geometry",
"point",
"linestring",
"polygon",
"multipoint",
"multilinestring",
"multipolygon",
"geometrycollection"
];
/**
* Gets list of spatial column data types.
*/
spatialTypes: ColumnType[] = [
"geometry",
"point",
"linestring",
"polygon",
"multipoint",
"multilinestring",
"multipolygon",
"geometrycollection"
];
/**
* Gets list of column data types that support length by a driver.
*/
withLengthColumnTypes: ColumnType[] = [
"char",
"varchar",
"nvarchar",
"binary",
"varbinary"
];
/**
* Gets list of column data types that support length by a driver.
*/
withWidthColumnTypes: ColumnType[] = [
"bit",
"tinyint",
"smallint",
"mediumint",
"int",
"integer",
"bigint"
];
/**
* Gets list of column data types that support precision by a driver.
*/
withPrecisionColumnTypes: ColumnType[] = [
"decimal",
"dec",
"numeric",
"fixed",
"float",
"double",
"double precision",
"real",
"time",
"datetime",
"timestamp"
];
/**
* Gets list of column data types that supports scale by a driver.
*/
withScaleColumnTypes: ColumnType[] = [
"decimal",
"dec",
"numeric",
"fixed",
"float",
"double",
"double precision",
"real"
];
/**
* Gets list of column data types that supports UNSIGNED and ZEROFILL attributes.
*/
unsignedAndZerofillTypes: ColumnType[] = [
"int",
"integer",
"smallint",
"tinyint",
"mediumint",
"bigint",
"decimal",
"dec",
"numeric",
"fixed",
"float",
"double",
"double precision",
"real"
];
/**
* ORM has special columns and we need to know what database column types should be for those columns.
* Column types are driver dependant.
*/
mappedDataTypes: MappedColumnTypes = {
createDate: "datetime",
createDatePrecision: 6,
createDateDefault: "CURRENT_TIMESTAMP(6)",
updateDate: "datetime",
updateDatePrecision: 6,
updateDateDefault: "CURRENT_TIMESTAMP(6)",
deleteDate: "datetime",
deleteDatePrecision: 6,
deleteDateNullable: true,
version: "int",
treeLevel: "int",
migrationId: "int",
migrationName: "varchar",
migrationTimestamp: "bigint",
cacheId: "int",
cacheIdentifier: "varchar",
cacheTime: "bigint",
cacheDuration: "int",
cacheQuery: "text",
cacheResult: "text",
metadataType: "varchar",
metadataDatabase: "varchar",
metadataSchema: "varchar",
metadataTable: "varchar",
metadataName: "varchar",
metadataValue: "text",
};
/**
* Default values of length, precision and scale depends on column data type.
* Used in the cases when length/precision/scale is not specified by user.
*/
dataTypeDefaults: DataTypeDefaults = {
"varchar": { length: 255 },
"nvarchar": { length: 255 },
"national varchar": { length: 255 },
"char": { length: 1 },
"binary": { length: 1 },
"varbinary": { length: 255 },
"decimal": { precision: 10, scale: 0 },
"dec": { precision: 10, scale: 0 },
"numeric": { precision: 10, scale: 0 },
"fixed": { precision: 10, scale: 0 },
"float": { precision: 12 },
"double": { precision: 22 },
"time": { precision: 0 },
"datetime": { precision: 0 },
"timestamp": { precision: 0 },
"bit": { width: 1 },
"int": { width: 11 },
"integer": { width: 11 },
"tinyint": { width: 4 },
"smallint": { width: 6 },
"mediumint": { width: 9 },
"bigint": { width: 20 }
};
/**
* Max length allowed by MySQL for aliases.
* @see https://dev.mysql.com/doc/refman/5.5/en/identifiers.html
*/
maxAliasLength = 63;
// -------------------------------------------------------------------------
// Constructor
// -------------------------------------------------------------------------
constructor(connection: Connection) {
this.connection = connection;
this.options = connection.options as AuroraDataApiConnectionOptions;
// load mysql package
this.loadDependencies();
this.client = new this.DataApiDriver(
this.options.region,
this.options.secretArn,
this.options.resourceArn,
this.options.database,
(query: string, parameters?: any[]) => this.connection.logger.logQuery(query, parameters),
this.options.serviceConfigOptions
);
// validate options to make sure everything is set
// todo: revisit validation with replication in mind
// if (!(this.options.host || (this.options.extra && this.options.extra.socketPath)) && !this.options.socketPath)
// throw new DriverOptionNotSetError("socketPath and host");
// if (!this.options.username)
// throw new DriverOptionNotSetError("username");
// if (!this.options.database)
// throw new DriverOptionNotSetError("database");
// todo: check what is going on when connection is setup without database and how to connect to a database then?
// todo: provide options to auto-create a database if it does not exist yet
}
// -------------------------------------------------------------------------
// Public Methods
// -------------------------------------------------------------------------
/**
* Performs connection to the database.
*/
async connect(): Promise<void> {
}
/**
* Makes any action after connection (e.g. create extensions in Postgres driver).
*/
afterConnect(): Promise<void> {
return Promise.resolve();
}
/**
* Closes connection with the database.
*/
async disconnect(): Promise<void> {
}
/**
* Creates a schema builder used to build and sync a schema.
*/
createSchemaBuilder() {
return new RdbmsSchemaBuilder(this.connection);
}
/**
* Creates a query runner used to execute database queries.
*/
createQueryRunner(mode: "master"|"slave" = "master") {
return new AuroraDataApiQueryRunner(this);
}
/**
* Replaces parameters in the given sql with special escaping character
* and an array of parameter names to be passed to a query.
*/
escapeQueryWithParameters(sql: string, parameters: ObjectLiteral, nativeParameters: ObjectLiteral): [string, any[]] {
const escapedParameters: any[] = Object.keys(nativeParameters).map(key => nativeParameters[key]);
if (!parameters || !Object.keys(parameters).length)
return [sql, escapedParameters];
const keys = Object.keys(parameters).map(parameter => "(:(\\.\\.\\.)?" + parameter + "\\b)").join("|");
sql = sql.replace(new RegExp(keys, "g"), (key: string) => {
let value: any;
if (key.substr(0, 4) === ":...") {
value = parameters[key.substr(4)];
} else {
value = parameters[key.substr(1)];
}
if (value instanceof Function) {
return value();
} else {
escapedParameters.push(value);
return "?";
}
}); // todo: make replace only in value statements, otherwise problems
return [sql, escapedParameters];
}
/**
* Escapes a column name.
*/
escape(columnName: string): string {
return "`" + columnName + "`";
}
/**
* Build full table name with database name, schema name and table name.
* E.g. "myDB"."mySchema"."myTable"
*/
buildTableName(tableName: string, schema?: string, database?: string): string {
return database ? `${database}.${tableName}` : tableName;
}
/**
* Prepares given value to a value to be persisted, based on its column type and metadata.
*/
preparePersistentValue(value: any, columnMetadata: ColumnMetadata): any {
if (columnMetadata.transformer)
value = ApplyValueTransformers.transformTo(columnMetadata.transformer, value);
if (value === null || value === undefined)
return value;
if (columnMetadata.type === Boolean) {
return value === true ? 1 : 0;
} else if (columnMetadata.type === "date") {
return DateUtils.mixedDateToDateString(value);
} else if (columnMetadata.type === "time") {
return DateUtils.mixedDateToTimeString(value);
} else if (columnMetadata.type === "json") {
return JSON.stringify(value);
} else if (columnMetadata.type === "timestamp" || columnMetadata.type === "datetime" || columnMetadata.type === Date) {
return DateUtils.mixedDateToDate(value);
} else if (columnMetadata.type === "simple-array") {
return DateUtils.simpleArrayToString(value);
} else if (columnMetadata.type === "simple-json") {
return DateUtils.simpleJsonToString(value);
} else if (columnMetadata.type === "enum" || columnMetadata.type === "simple-enum") {
return "" + value;
}
return value;
}
/**
* Prepares given value to a value to be persisted, based on its column type or metadata.
*/
prepareHydratedValue(value: any, columnMetadata: ColumnMetadata): any {
if (value === null || value === undefined)
return columnMetadata.transformer ? ApplyValueTransformers.transformFrom(columnMetadata.transformer, value) : value;
if (columnMetadata.type === Boolean || columnMetadata.type === "bool" || columnMetadata.type === "boolean") {
value = value ? true : false;
} else if (columnMetadata.type === "datetime" || columnMetadata.type === Date) {
value = DateUtils.normalizeHydratedDate(value);
} else if (columnMetadata.type === "date") {
value = DateUtils.mixedDateToDateString(value);
} else if (columnMetadata.type === "json") {
value = typeof value === "string" ? JSON.parse(value) : value;
} else if (columnMetadata.type === "time") {
value = DateUtils.mixedTimeToString(value);
} else if (columnMetadata.type === "simple-array") {
value = DateUtils.stringToSimpleArray(value);
} else if (columnMetadata.type === "simple-json") {
value = DateUtils.stringToSimpleJson(value);
} else if ((columnMetadata.type === "enum" || columnMetadata.type === "simple-enum")
&& columnMetadata.enum
&& !isNaN(value)
&& columnMetadata.enum.indexOf(parseInt(value)) >= 0) {
// convert to number if that exists in possible enum options
value = parseInt(value);
}
if (columnMetadata.transformer)
value = ApplyValueTransformers.transformFrom(columnMetadata.transformer, value);
return value;
}
/**
* Creates a database type from a given column metadata.
*/
normalizeType(column: { type: ColumnType, length?: number|string, precision?: number|null, scale?: number }): string {
if (column.type === Number || column.type === "integer") {
return "int";
} else if (column.type === String) {
return "varchar";
} else if (column.type === Date) {
return "datetime";
} else if ((column.type as any) === Buffer) {
return "blob";
} else if (column.type === Boolean) {
return "tinyint";
} else if (column.type === "uuid") {
return "varchar";
} else if (column.type === "simple-array" || column.type === "simple-json") {
return "text";
} else if (column.type === "simple-enum") {
return "enum";
} else if (column.type === "double precision" || column.type === "real") {
return "double";
} else if (column.type === "dec" || column.type === "numeric" || column.type === "fixed") {
return "decimal";
} else if (column.type === "bool" || column.type === "boolean") {
return "tinyint";
} else if (column.type === "nvarchar" || column.type === "national varchar") {
return "varchar";
} else if (column.type === "nchar" || column.type === "national char") {
return "char";
} else {
return column.type as string || "";
}
}
/**
* Normalizes "default" value of the column.
*/
normalizeDefault(columnMetadata: ColumnMetadata): string {
const defaultValue = columnMetadata.default;
if ((columnMetadata.type === "enum" || columnMetadata.type === "simple-enum") && defaultValue !== undefined) {
return `'${defaultValue}'`;
}
if (typeof defaultValue === "number") {
return "" + defaultValue;
} else if (typeof defaultValue === "boolean") {
return defaultValue === true ? "1" : "0";
} else if (typeof defaultValue === "function") {
return defaultValue();
} else if (typeof defaultValue === "string") {
return `'${defaultValue}'`;
} else if (defaultValue === null) {
return `null`;
} else {
return defaultValue;
}
}
/**
* Normalizes "isUnique" value of the column.
*/
normalizeIsUnique(column: ColumnMetadata): boolean {
return column.entityMetadata.indices.some(idx => idx.isUnique && idx.columns.length === 1 && idx.columns[0] === column);
}
/**
* Returns default column lengths, which is required on column creation.
*/
getColumnLength(column: ColumnMetadata|TableColumn): string {
if (column.length)
return column.length.toString();
/**
* fix https://github.com/typeorm/typeorm/issues/1139
*/
if (column.generationStrategy === "uuid")
return "36";
switch (column.type) {
case String:
case "varchar":
case "nvarchar":
case "national varchar":
return "255";
case "varbinary":
return "255";
default:
return "";
}
}
/**
* Creates column type definition including length, precision and scale
*/
createFullType(column: TableColumn): string {
let type = column.type;
// used 'getColumnLength()' method, because MySQL requires column length for `varchar`, `nvarchar` and `varbinary` data types
if (this.getColumnLength(column)) {
type += `(${this.getColumnLength(column)})`;
} else if (column.width) {
type += `(${column.width})`;
} else if (column.precision !== null && column.precision !== undefined && column.scale !== null && column.scale !== undefined) {
type += `(${column.precision},${column.scale})`;
} else if (column.precision !== null && column.precision !== undefined) {
type += `(${column.precision})`;
}
if (column.isArray)
type += " array";
return type;
}
/**
* Obtains a new database connection to a master server.
* Used for replication.
* If replication is not setup then returns default connection's database connection.
*/
obtainMasterConnection(): Promise<any> {
return new Promise<any>((ok, fail) => {
if (this.poolCluster) {
this.poolCluster.getConnection("MASTER", (err: any, dbConnection: any) => {
err ? fail(err) : ok(this.prepareDbConnection(dbConnection));
});
} else if (this.pool) {
this.pool.getConnection((err: any, dbConnection: any) => {
err ? fail(err) : ok(this.prepareDbConnection(dbConnection));
});
} else {
fail(new Error(`Connection is not established with mysql database`));
}
});
}
/**
* Obtains a new database connection to a slave server.
* Used for replication.
* If replication is not setup then returns master (default) connection's database connection.
*/
obtainSlaveConnection(): Promise<any> {
if (!this.poolCluster)
return this.obtainMasterConnection();
return new Promise<any>((ok, fail) => {
this.poolCluster.getConnection("SLAVE*", (err: any, dbConnection: any) => {
err ? fail(err) : ok(dbConnection);
});
});
}
/**
* Creates generated map of values generated or returned by database after INSERT query.
*/
createGeneratedMap(metadata: EntityMetadata, insertResult: any) {
const generatedMap = metadata.generatedColumns.reduce((map, generatedColumn) => {
let value: any;
if (generatedColumn.generationStrategy === "increment" && insertResult.insertId) {
value = insertResult.insertId;
// } else if (generatedColumn.generationStrategy === "uuid") {
// console.log("getting db value:", generatedColumn.databaseName);
// value = generatedColumn.getEntityValue(uuidMap);
}
return OrmUtils.mergeDeep(map, generatedColumn.createValueMap(value));
}, {} as ObjectLiteral);
return Object.keys(generatedMap).length > 0 ? generatedMap : undefined;
}
/**
* Differentiate columns of this table and columns from the given column metadatas columns
* and returns only changed.
*/
findChangedColumns(tableColumns: TableColumn[], columnMetadatas: ColumnMetadata[]): ColumnMetadata[] {
return columnMetadatas.filter(columnMetadata => {
const tableColumn = tableColumns.find(c => c.name === columnMetadata.databaseName);
if (!tableColumn)
return false; // we don't need new columns, we only need exist and changed
// console.log("table:", columnMetadata.entityMetadata.tableName);
// console.log("name:", tableColumn.name, columnMetadata.databaseName);
// console.log("type:", tableColumn.type, this.normalizeType(columnMetadata));
// console.log("length:", tableColumn.length, columnMetadata.length);
// console.log("width:", tableColumn.width, columnMetadata.width);
// console.log("precision:", tableColumn.precision, columnMetadata.precision);
// console.log("scale:", tableColumn.scale, columnMetadata.scale);
// console.log("zerofill:", tableColumn.zerofill, columnMetadata.zerofill);
// console.log("unsigned:", tableColumn.unsigned, columnMetadata.unsigned);
// console.log("asExpression:", tableColumn.asExpression, columnMetadata.asExpression);
// console.log("generatedType:", tableColumn.generatedType, columnMetadata.generatedType);
// console.log("comment:", tableColumn.comment, columnMetadata.comment);
// console.log("default:", tableColumn.default, columnMetadata.default);
// console.log("enum:", tableColumn.enum, columnMetadata.enum);
// console.log("default changed:", !this.compareDefaultValues(this.normalizeDefault(columnMetadata), tableColumn.default));
// console.log("onUpdate:", tableColumn.onUpdate, columnMetadata.onUpdate);
// console.log("isPrimary:", tableColumn.isPrimary, columnMetadata.isPrimary);
// console.log("isNullable:", tableColumn.isNullable, columnMetadata.isNullable);
// console.log("isUnique:", tableColumn.isUnique, this.normalizeIsUnique(columnMetadata));
// console.log("isGenerated:", tableColumn.isGenerated, columnMetadata.isGenerated);
// console.log((columnMetadata.generationStrategy !== "uuid" && tableColumn.isGenerated !== columnMetadata.isGenerated));
// console.log("==========================================");
let columnMetadataLength = columnMetadata.length;
if (!columnMetadataLength && columnMetadata.generationStrategy === "uuid") { // fixing #3374
columnMetadataLength = this.getColumnLength(columnMetadata);
}
return tableColumn.name !== columnMetadata.databaseName
|| tableColumn.type !== this.normalizeType(columnMetadata)
|| tableColumn.length !== columnMetadataLength
|| tableColumn.width !== columnMetadata.width
|| tableColumn.precision !== columnMetadata.precision
|| tableColumn.scale !== columnMetadata.scale
|| tableColumn.zerofill !== columnMetadata.zerofill
|| tableColumn.unsigned !== columnMetadata.unsigned
|| tableColumn.asExpression !== columnMetadata.asExpression
|| tableColumn.generatedType !== columnMetadata.generatedType
// || tableColumn.comment !== columnMetadata.comment // todo
|| !this.compareDefaultValues(this.normalizeDefault(columnMetadata), tableColumn.default)
|| (tableColumn.enum && columnMetadata.enum && !OrmUtils.isArraysEqual(tableColumn.enum, columnMetadata.enum.map(val => val + "")))
|| tableColumn.onUpdate !== columnMetadata.onUpdate
|| tableColumn.isPrimary !== columnMetadata.isPrimary
|| tableColumn.isNullable !== columnMetadata.isNullable
|| tableColumn.isUnique !== this.normalizeIsUnique(columnMetadata)
|| (columnMetadata.generationStrategy !== "uuid" && tableColumn.isGenerated !== columnMetadata.isGenerated);
});
}
/**
* Returns true if driver supports RETURNING / OUTPUT statement.
*/
isReturningSqlSupported(): boolean {
return false;
}
/**
* Returns true if driver supports uuid values generation on its own.
*/
isUUIDGenerationSupported(): boolean {
return false;
}
/**
* Creates an escaped parameter.
*/
createParameter(parameterName: string, index: number): string {
return "?";
}
// -------------------------------------------------------------------------
// Protected Methods
// -------------------------------------------------------------------------
/**
* Loads all driver dependencies.
*/
protected loadDependencies(): void {
this.DataApiDriver = PlatformTools.load("typeorm-aurora-data-api-driver");
// Driver uses rollup for publishing, which has issues when using typeorm in combination with webpack
// See https://github.com/webpack/webpack/issues/4742#issuecomment-295556787
this.DataApiDriver = this.DataApiDriver.default || this.DataApiDriver;
}
/**
* Creates a new connection pool for a given database credentials.
*/
protected createConnectionOptions(options: AuroraDataApiConnectionOptions, credentials: AuroraDataApiConnectionCredentialsOptions): Promise<any> {
credentials = Object.assign({}, credentials, DriverUtils.buildDriverOptions(credentials)); // todo: do it better way
// build connection options for the driver
return Object.assign({}, {
resourceArn: options.resourceArn,
secretArn: options.secretArn,
database: options.database,
region: options.region,
type: options.type,
}, {
host: credentials.host,
user: credentials.username,
password: credentials.password,
database: credentials.database,
port: credentials.port,
ssl: options.ssl
},
options.extra || {});
}
/**
* Creates a new connection pool for a given database credentials.
*/
protected async createPool(connectionOptions: any): Promise<any> {
return {};
}
/**
* Attaches all required base handlers to a database connection, such as the unhandled error handler.
*/
private prepareDbConnection(connection: any): any {
const { logger } = this.connection;
/*
Attaching an error handler to connection errors is essential, as, otherwise, errors raised will go unhandled and
cause the hosting app to crash.
*/
if (connection.listeners("error").length === 0) {
connection.on("error", (error: any) => logger.log("warn", `MySQL connection raised an error. ${error}`));
}
return connection;
}
/**
* Checks if "DEFAULT" values in the column metadata and in the database are equal.
*/
protected compareDefaultValues(columnMetadataValue: string, databaseValue: string): boolean {
if (typeof columnMetadataValue === "string" && typeof databaseValue === "string") {
// we need to cut out "'" because in mysql we can understand returned value is a string or a function
// as result compare cannot understand if default is really changed or not
columnMetadataValue = columnMetadataValue.replace(/^'+|'+$/g, "");
databaseValue = databaseValue.replace(/^'+|'+$/g, "");
}
return columnMetadataValue === databaseValue;
}
}