Аутентификация при помощи файла сервисного аккаунта

package main

import (
  "context"
  "database/sql"
  "os"

  "github.com/ydb-platform/ydb-go-sdk/v3"
  yc "github.com/ydb-platform/ydb-go-yc"
)

func main() {
  ctx, cancel := context.WithCancel(context.Background())
  defer cancel()
  nativeDriver, err := ydb.Open(ctx,
    os.Getenv("YDB_CONNECTION_STRING"),
    yc.WithServiceAccountKeyFileCredentials(
      os.Getenv("YDB_SERVICE_ACCOUNT_KEY_FILE_CREDENTIALS"),
    ),
    yc.WithInternalCA(), // append Yandex Cloud certificates
  )
  if err != nil {
    panic(err)
  }
  defer nativeDriver.Close(ctx)
  connector, err := ydb.Connector(nativeDriver)
  if err != nil {
    panic(err)
  }
  db := sql.OpenDB(connector)
  defer db.Close()
  ...
}

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Properties;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class ServiceAccountAuthJdbcExample {
    public static void main(String[] args) throws SQLException {
        String jdbcUrl = System.getenv().getOrDefault(
                "YDB_JDBC_URL", "jdbc:ydb:grpc://localhost:2136/local");

        String saKeyFile = System.getenv("YDB_SERVICE_ACCOUNT_KEY_FILE_CREDENTIALS");
        if (saKeyFile == null || saKeyFile.isEmpty()) {
            throw new IllegalStateException(
                    "Задайте переменную окружения YDB_SERVICE_ACCOUNT_KEY_FILE_CREDENTIALS");
        }

        Properties props = new Properties();
        props.setProperty("saKeyFile", saKeyFile);

        try (Connection connection = DriverManager.getConnection(jdbcUrl, props);
             Statement statement = connection.createStatement();
             ResultSet rs = statement.executeQuery("SELECT 1")) {
            if (rs.next()) {
                System.out.println("SELECT 1 = " + rs.getInt(1));
            }
        }
    }
}

import os
import asyncio
import ydb
import ydb.iam

async def ydb_init():
    async with ydb.aio.Driver(
        endpoint=os.environ["YDB_ENDPOINT"],
        database=os.environ["YDB_DATABASE"],
        # service account key should be in the local file,
        # and SA_KEY_FILE environment variable should point to it
        credentials=ydb.iam.ServiceAccountCredentials.from_file(os.environ["SA_KEY_FILE"]),
    ) as driver:
        await driver.wait()
        ...

asyncio.run(ydb_init())

import os
import sqlalchemy as sa
import ydb.iam

engine = sa.create_engine(
    "yql+ydb://localhost:2136/local",
    connect_args={
        "credentials": ydb.iam.ServiceAccountCredentials.from_file(
            os.environ["YDB_SERVICE_ACCOUNT_KEY_FILE_CREDENTIALS"]
        )
    }
)
with engine.connect() as connection:
    result = connection.execute(sa.text("SELECT 1"))