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import { entityKind } from 'drizzle-orm/entity'
import { TransactionRollbackError } from 'drizzle-orm/errors'
import { type Logger, NoopLogger } from 'drizzle-orm/logger'
import type { RelationalSchemaConfig, TablesRelationalConfig } from 'drizzle-orm/relations'
import type { QueryWithTypings, SQL, SQLWrapper } from 'drizzle-orm/sql/sql'
import type { YdbDialect } from '../ydb/dialect.js'
import { mapYdbQueryError } from '../ydb/errors.js'
import type {
YdbExecuteOptions,
YdbExecutor,
YdbQueryResult,
YdbTransactionalExecutor,
} from '../ydb/driver.js'
import type { YdbTransactionConfig } from '../ydb/driver.js'
import { type YdbSelectedFieldsOrdered, mapResultRow, rowToArray } from './result-mapping.js'
import type {
YdbSchemaDefinition,
YdbSchemaRelations,
YdbSchemaWithoutTables,
} from './schema.types.js'
import { YdbTransaction } from './transaction.js'
export interface YdbPreparedQueryConfig {
execute: unknown
all: unknown
get: unknown
values: unknown
}
export interface YdbSessionOptions {
logger?: Logger | undefined
}
type SelectedFieldsOrdered = YdbSelectedFieldsOrdered
export type YdbQuerySource = SQL | SQLWrapper | QueryWithTypings
export type YdbBatchQuery = YdbQuerySource | YdbPreparedQuery | YdbRunnablePreparedQuery
type YdbRunnablePreparedQuery = {
prepare(name?: string): Pick<YdbPreparedQuery, 'execute' | 'all' | 'get' | 'values'>
}
function isQueryWithTypings(query: YdbQuerySource): query is QueryWithTypings {
return 'sql' in query && 'params' in query && Array.isArray(query.params)
}
function isRunnablePreparedQuery(query: unknown): query is SQLWrapper & YdbRunnablePreparedQuery {
return (
!!query &&
typeof query === 'object' &&
'prepare' in query &&
typeof query.prepare === 'function'
)
}
function supportsTransactions(
client: YdbExecutor | YdbTransactionalExecutor
): client is YdbTransactionalExecutor {
return 'transaction' in client && typeof client.transaction === 'function'
}
function normalizeQuery(query: YdbQuerySource, dialect: YdbDialect): QueryWithTypings {
Iif (isQueryWithTypings(query)) {
return query as QueryWithTypings
}
return dialect.sqlToQuery(query.getSQL())
}
function findTransactionRollbackError(error: unknown): TransactionRollbackError | undefined {
let current = error
while (current instanceof Error) {
if (current instanceof TransactionRollbackError) {
return current
}
current = current.cause
}
return undefined
}
function attachResultMeta(rows: unknown[], result: YdbQueryResult): unknown[] {
Object.defineProperties(rows, {
rowCount: {
configurable: true,
enumerable: false,
value: result.rowCount,
},
command: {
configurable: true,
enumerable: false,
value: result.command,
},
meta: {
configurable: true,
enumerable: false,
value: result.meta,
},
})
return rows
}
export class YdbPreparedQuery<T extends YdbPreparedQueryConfig = YdbPreparedQueryConfig> {
static readonly [entityKind] = 'YdbPreparedQuery'
readonly #client: YdbExecutor
readonly #query: QueryWithTypings
readonly #logger: Logger
readonly #fields: SelectedFieldsOrdered | undefined
readonly #responseInArrayMode: boolean
readonly #customResultMapper:
| ((rows: unknown[][], mapColumnValue?: (value: unknown) => unknown) => T['execute'])
| undefined
constructor(
client: YdbExecutor,
query: QueryWithTypings,
logger: Logger,
fields: SelectedFieldsOrdered | undefined,
responseInArrayMode: boolean,
customResultMapper?: (
rows: unknown[][],
mapColumnValue?: (value: unknown) => unknown
) => T['execute']
) {
this.#client = client
this.#query = query
this.#logger = logger
this.#fields = fields
this.#responseInArrayMode = responseInArrayMode
this.#customResultMapper = customResultMapper
}
getQuery(): QueryWithTypings {
return this.#query
}
isResponseInArrayMode(): boolean {
return this.#responseInArrayMode
}
mapResult(response: unknown, _isFromBatch?: boolean): unknown {
Iif (!Array.isArray(response)) {
return response
}
if (this.#customResultMapper) {
let rows = this.#fields
? response.map((row) => rowToArray(this.#fields as any, row as any))
: (response as unknown[][])
return this.#customResultMapper(rows as unknown[][], (value) => value)
}
if (!this.#fields) {
return response
}
return (response as Array<unknown[] | Record<string, unknown>>).map((row) =>
mapResultRow(this.#fields as any, row, undefined)
)
}
async #run(method: 'execute' | 'all', arrayMode: boolean): Promise<unknown[]> {
let options: YdbExecuteOptions = {
arrayMode,
}
if (this.#query.typings !== undefined) {
options.typings = this.#query.typings
}
this.#logger.logQuery(this.#query.sql, this.#query.params)
try {
let result = await this.#client.execute(
this.#query.sql,
this.#query.params,
method,
options
)
return attachResultMeta(result.rows, result)
} catch (error) {
throw mapYdbQueryError(this.#query.sql, this.#query.params, error)
}
}
async execute(): Promise<T['execute']> {
let rows = await this.#run('execute', this.#responseInArrayMode)
return this.mapResult(rows) as T['execute']
}
async all(): Promise<T['all']> {
let rows = await this.#run('all', this.#responseInArrayMode)
return this.mapResult(rows) as T['all']
}
async get(): Promise<T['get']> {
let rows = await this.#run('all', this.#responseInArrayMode)
let result = this.mapResult(rows)
return (Array.isArray(result) ? result[0] : result) as T['get']
}
async values(): Promise<T['values']> {
let rows = await this.#run('all', true)
return rows as T['values']
}
}
export class YdbSession {
static readonly [entityKind] = 'YdbSession'
readonly #logger: Logger
readonly #client: YdbExecutor | YdbTransactionalExecutor
readonly #dialect: YdbDialect
constructor(
client: YdbExecutor | YdbTransactionalExecutor,
dialect: YdbDialect,
options: YdbSessionOptions = {}
) {
this.#client = client
this.#dialect = dialect
this.#logger = options.logger ?? new NoopLogger()
}
prepareQuery<T extends YdbPreparedQueryConfig = YdbPreparedQueryConfig>(
query: YdbQuerySource,
fields?: SelectedFieldsOrdered,
_name?: string,
isResponseInArrayMode = false,
customResultMapper?: (
rows: unknown[][],
mapColumnValue?: (value: unknown) => unknown
) => T['execute']
): YdbPreparedQuery<T> {
return new YdbPreparedQuery<T>(
this.#client,
normalizeQuery(query, this.#dialect),
this.#logger,
fields,
isResponseInArrayMode,
customResultMapper
)
}
async execute<T = unknown>(query: YdbQuerySource, options?: YdbExecuteOptions): Promise<T> {
if (isRunnablePreparedQuery(query)) {
return query.prepare().execute() as Promise<T>
}
let prepared = this.prepareQuery<YdbPreparedQueryConfig & { execute: T }>(
query,
undefined,
undefined,
false
)
Iif (options?.arrayMode === true) {
return prepared.values() as Promise<T>
}
return prepared.execute() as Promise<T>
}
async all<T = unknown>(query: YdbQuerySource, options?: YdbExecuteOptions): Promise<T[]> {
if (isRunnablePreparedQuery(query)) {
return query.prepare().all() as Promise<T[]>
}
let prepared = this.prepareQuery<YdbPreparedQueryConfig & { all: T[] }>(
query,
undefined,
undefined,
false
)
Iif (options?.arrayMode === true) {
return prepared.values() as Promise<T[]>
}
return prepared.all() as Promise<T[]>
}
async get<T = unknown>(query: YdbQuerySource): Promise<T> {
if (isRunnablePreparedQuery(query)) {
return query.prepare().get() as Promise<T>
}
return this.prepareQuery<YdbPreparedQueryConfig & { get: T }>(
query,
undefined,
undefined,
false
).get()
}
async values<T extends unknown[] = unknown[]>(query: YdbQuerySource): Promise<T[]> {
if (isRunnablePreparedQuery(query)) {
return query.prepare().values() as Promise<T[]>
}
return this.prepareQuery<YdbPreparedQueryConfig & { values: T[] }>(
query,
undefined,
undefined,
true
).values()
}
async batch<T extends readonly YdbBatchQuery[]>(
queries: T
): Promise<{ [K in keyof T]: unknown }> {
let results: unknown[] = []
for (let query of queries) {
Iif (query instanceof YdbPreparedQuery) {
results.push(await query.execute())
continue
}
Eif (isRunnablePreparedQuery(query)) {
results.push(await query.prepare().execute())
continue
}
results.push(await this.execute(query as YdbQuerySource))
}
return results as { [K in keyof T]: unknown }
}
async count(query: YdbQuerySource): Promise<number> {
let rows = await this.values<[number | bigint | string]>(query)
let value = rows[0]?.[0]
return Number(value ?? 0)
}
async transaction<T>(
transaction: (tx: YdbTransaction) => Promise<T>,
config?: YdbTransactionConfig
): Promise<T>
async transaction<
T,
TSchemaDefinition extends YdbSchemaDefinition = YdbSchemaWithoutTables,
TSchemaRelations extends TablesRelationalConfig = YdbSchemaRelations<TSchemaDefinition>,
>(
transaction: (tx: YdbTransaction<TSchemaDefinition, TSchemaRelations>) => Promise<T>,
config: YdbTransactionConfig | undefined,
schema: RelationalSchemaConfig<TSchemaRelations> | undefined
): Promise<T>
async transaction<
T,
TSchemaDefinition extends YdbSchemaDefinition = YdbSchemaWithoutTables,
TSchemaRelations extends TablesRelationalConfig = YdbSchemaRelations<TSchemaDefinition>,
>(
transaction: (tx: YdbTransaction<TSchemaDefinition, TSchemaRelations>) => Promise<T>,
config?: YdbTransactionConfig,
schema?: RelationalSchemaConfig<TSchemaRelations>
): Promise<T> {
if (!supportsTransactions(this.#client)) {
throw new Error('Transactions are not supported')
}
try {
return await this.#client.transaction(async (txClient) => {
let session = new YdbSession(txClient, this.#dialect, { logger: this.#logger })
let tx = new YdbTransaction<TSchemaDefinition, TSchemaRelations>(
this.#dialect,
session,
schema
)
return transaction(tx)
}, config)
} catch (error) {
let rollbackError = findTransactionRollbackError(error)
Eif (rollbackError) {
throw rollbackError
}
throw error
}
}
}
|