Conectar-se pelo Cloud Build

MySQL   |  PostgreSQL   |  SQL Server

Nesta página, você confere informações e exemplos de como se conectar a uma instância do Cloud SQL usando um serviço em execução no Cloud Build.

O Cloud SQL é um serviço de banco de dados totalmente gerenciado que ajuda a configurar, manter, gerenciar e administrar seus bancos de dados relacionais na nuvem.

O Cloud Build é um serviço que executa seus builds na infraestrutura do Google Cloud .

Configurar uma instância do Cloud SQL

1. Ative a API Cloud SQL Admin no projeto do Google Cloud do qual você está se conectando, caso ainda não tenha feito isso:

   Enable the API

2. Crie uma instância do Cloud SQL para PostgreSQL. Recomendamos que você escolha um local da instância do Cloud SQL na mesma região do serviço do Cloud Run para melhorar a latência, evitar alguns custos de rede e reduzir os riscos de falha entre regiões.

   Por padrão, o Cloud SQL atribui um endereço IP público a uma nova instância. Você também tem a opção de atribuir um endereço IP privado. Para mais informações sobre as opções de conectividade de ambos, consulte a página Visão geral da conexão.

Configurar um repositório do Artifact Registry

1. Se ainda não tiver feito isso, ative a API Artifact Registry no projeto do Google Cloud do qual você está se conectando:

   Enable the API

2. Criar um Artifact Registry do Docker. Para melhorar a latência, reduzir o risco de falha entre regiões e evitar custos de rede adicionais, recomendamos que você escolha um local do Artifact Registry na mesma região do serviço do Cloud Run.

Configure o Cloud Build

As etapas para configurar o Cloud Build dependem do tipo de endereço IP atribuído à instância do Cloud SQL.

IP público (padrão)

Verifique se sua conta de serviço do Cloud Build tem os papéis e permissões do IAM necessários para se conectar à instância do Cloud SQL. A conta de serviço do Cloud Build está listada na página IAM do Console do Google Cloud como Principal.[YOUR-PROJECT-NUMBER]@cloudbuild.gserviceaccount.com

Para mostrar essa conta de serviço no console do Google Cloud, marque a caixa de seleção Incluir concessões de papéis fornecidos pelo Google.

A conta de serviço do Cloud Build precisa do papel do IAM Cloud SQL Client.

Se a conta de serviço do Cloud Build pertencer a um projeto diferente da instância do Cloud SQL, a API Cloud SQL Admin e o papel precisarão ser adicionados aos dois projetos.

IP particular

Para se conectar à instância do Cloud SQL por um IP privado, o Cloud Build precisa estar na mesma rede VPC da instância do Cloud SQL. Para configurar isso:

1. Configure uma conexão privada entre a rede VPC da instância do Cloud SQL e a rede do produtor de serviços.
2. Crie um pool particular do Cloud Build.

Depois de configurado, o aplicativo poderá se conectar diretamente usando o endereço IP privado e a porta 5432 da instância quando a versão for executada no pool.

Conecte-se ao Cloud SQL

Depois de configurar o Cloud Build, conecte-se à instância do Cloud SQL.

IP público (padrão)

Para caminhos de IP público, o Cloud Build é compatível com soquetes Unix e TCP.

Conectar com TCP

Python

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

import os
import ssl

import sqlalchemy


def connect_tcp_socket() -> sqlalchemy.engine.base.Engine:
    """Initializes a TCP connection pool for a Cloud SQL instance of Postgres."""
    # Note: Saving credentials in environment variables is convenient, but not
    # secure - consider a more secure solution such as
    # Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
    # keep secrets safe.
    db_host = os.environ[
        "INSTANCE_HOST"
    ]  # e.g. '127.0.0.1' ('172.17.0.1' if deployed to GAE Flex)
    db_user = os.environ["DB_USER"]  # e.g. 'my-db-user'
    db_pass = os.environ["DB_PASS"]  # e.g. 'my-db-password'
    db_name = os.environ["DB_NAME"]  # e.g. 'my-database'
    db_port = os.environ["DB_PORT"]  # e.g. 5432

    pool = sqlalchemy.create_engine(
        # Equivalent URL:
        # postgresql+pg8000://<db_user>:<db_pass>@<db_host>:<db_port>/<db_name>
        sqlalchemy.engine.url.URL.create(
            drivername="postgresql+pg8000",
            username=db_user,
            password=db_pass,
            host=db_host,
            port=db_port,
            database=db_name,
        ),
        # ...
    )
    return pool

Java

Para conferir esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

Observação:

• CLOUD_SQL_CONNECTION_NAME precisa ser representado como <MEU-PROJETO>:<REGIÃO-DA-INSTÂNCIA>:<NOME-DA-INSTÂNCIA>
• O uso do argumento ipTypes=PRIVATE forçará o SocketFactory a se conectar ao IP privado associado de uma instância
• Consulte os requisitos de versão de fábrica do soquete JDBC para o arquivo pom.xml aqui.

import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
import javax.sql.DataSource;

public class TcpConnectionPoolFactory extends ConnectionPoolFactory {

  // Note: Saving credentials in environment variables is convenient, but not
  // secure - consider a more secure solution such as
  // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
  // keep secrets safe.
  private static final String DB_USER = System.getenv("DB_USER");
  private static final String DB_PASS = System.getenv("DB_PASS");
  private static final String DB_NAME = System.getenv("DB_NAME");

  private static final String INSTANCE_HOST = System.getenv("INSTANCE_HOST");
  private static final String DB_PORT = System.getenv("DB_PORT");


  public static DataSource createConnectionPool() {
    // The configuration object specifies behaviors for the connection pool.
    HikariConfig config = new HikariConfig();

    // The following URL is equivalent to setting the config options below:
    // jdbc:postgresql://<INSTANCE_HOST>:<DB_PORT>/<DB_NAME>?user=<DB_USER>&password=<DB_PASS>
    // See the link below for more info on building a JDBC URL for the Cloud SQL JDBC Socket Factory
    // https://github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory#creating-the-jdbc-url

    // Configure which instance and what database user to connect with.
    config.setJdbcUrl(String.format("jdbc:postgresql://%s:%s/%s", INSTANCE_HOST, DB_PORT, DB_NAME));
    config.setUsername(DB_USER); // e.g. "root", "postgres"
    config.setPassword(DB_PASS); // e.g. "my-password"


    // ... Specify additional connection properties here.
    // ...

    // Initialize the connection pool using the configuration object.
    return new HikariDataSource(config);
  }
}

Node.js

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

const Knex = require('knex');
const fs = require('fs');

// createTcpPool initializes a TCP connection pool for a Cloud SQL
// instance of Postgres.
const createTcpPool = async config => {
  // Note: Saving credentials in environment variables is convenient, but not
  // secure - consider a more secure solution such as
  // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
  // keep secrets safe.
  const dbConfig = {
    client: 'pg',
    connection: {
      host: process.env.INSTANCE_HOST, // e.g. '127.0.0.1'
      port: process.env.DB_PORT, // e.g. '5432'
      user: process.env.DB_USER, // e.g. 'my-user'
      password: process.env.DB_PASS, // e.g. 'my-user-password'
      database: process.env.DB_NAME, // e.g. 'my-database'
    },
    // ... Specify additional properties here.
    ...config,
  };
  // Establish a connection to the database.
  return Knex(dbConfig);
};

Go

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

package cloudsql

import (
	"database/sql"
	"fmt"
	"log"
	"os"

	// Note: If connecting using the App Engine Flex Go runtime, use
	// "github.com/jackc/pgx/stdlib" instead, since v5 requires
	// Go modules which are not supported by App Engine Flex.
	_ "github.com/jackc/pgx/v5/stdlib"
)

// connectTCPSocket initializes a TCP connection pool for a Cloud SQL
// instance of Postgres.
func connectTCPSocket() (*sql.DB, error) {
	mustGetenv := func(k string) string {
		v := os.Getenv(k)
		if v == "" {
			log.Fatalf("Fatal Error in connect_tcp.go: %s environment variable not set.", k)
		}
		return v
	}
	// Note: Saving credentials in environment variables is convenient, but not
	// secure - consider a more secure solution such as
	// Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
	// keep secrets safe.
	var (
		dbUser    = mustGetenv("DB_USER")       // e.g. 'my-db-user'
		dbPwd     = mustGetenv("DB_PASS")       // e.g. 'my-db-password'
		dbTCPHost = mustGetenv("INSTANCE_HOST") // e.g. '127.0.0.1' ('172.17.0.1' if deployed to GAE Flex)
		dbPort    = mustGetenv("DB_PORT")       // e.g. '5432'
		dbName    = mustGetenv("DB_NAME")       // e.g. 'my-database'
	)

	dbURI := fmt.Sprintf("host=%s user=%s password=%s port=%s database=%s",
		dbTCPHost, dbUser, dbPwd, dbPort, dbName)


	// dbPool is the pool of database connections.
	dbPool, err := sql.Open("pgx", dbURI)
	if err != nil {
		return nil, fmt.Errorf("sql.Open: %w", err)
	}

	// ...

	return dbPool, nil
}

C#

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub (em inglês).

using Npgsql;
using System;

namespace CloudSql
{
    public class PostgreSqlTcp
    {
        public static NpgsqlConnectionStringBuilder NewPostgreSqlTCPConnectionString()
        {
            // Equivalent connection string:
            // "Uid=<DB_USER>;Pwd=<DB_PASS>;Host=<INSTANCE_HOST>;Database=<DB_NAME>;"
            var connectionString = new NpgsqlConnectionStringBuilder()
            {
                // Note: Saving credentials in environment variables is convenient, but not
                // secure - consider a more secure solution such as
                // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
                // keep secrets safe.
                Host = Environment.GetEnvironmentVariable("INSTANCE_HOST"),     // e.g. '127.0.0.1'
                // Set Host to 'cloudsql' when deploying to App Engine Flexible environment
                Username = Environment.GetEnvironmentVariable("DB_USER"), // e.g. 'my-db-user'
                Password = Environment.GetEnvironmentVariable("DB_PASS"), // e.g. 'my-db-password'
                Database = Environment.GetEnvironmentVariable("DB_NAME"), // e.g. 'my-database'

                // The Cloud SQL proxy provides encryption between the proxy and instance.
                SslMode = SslMode.Disable,
            };
            connectionString.Pooling = true;
            // Specify additional properties here.
            return connectionString;
        }
    }
}

Ruby

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

tcp: &tcp
  adapter: postgresql
  # Configure additional properties here.
  # Note: Saving credentials in environment variables is convenient, but not
  # secure - consider a more secure solution such as
  # Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
  # keep secrets safe.
  username: <%= ENV["DB_USER"] %>  # e.g. "my-database-user"
  password: <%= ENV["DB_PASS"] %> # e.g. "my-database-password"
  database: <%= ENV.fetch("DB_NAME") { "vote_development" } %>
  host: <%= ENV.fetch("INSTANCE_HOST") { "127.0.0.1" }%> # '172.17.0.1' if deployed to GAE Flex
  port: <%= ENV.fetch("DB_PORT") { 5432 }%>

PHP

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

namespace Google\Cloud\Samples\CloudSQL\Postgres;

use PDO;
use PDOException;
use RuntimeException;
use TypeError;

class DatabaseTcp
{
    public static function initTcpDatabaseConnection(): PDO
    {
        try {
            // Note: Saving credentials in environment variables is convenient, but not
            // secure - consider a more secure solution such as
            // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
            // keep secrets safe.
            $username = getenv('DB_USER'); // e.g. 'your_db_user'
            $password = getenv('DB_PASS'); // e.g. 'your_db_password'
            $dbName = getenv('DB_NAME'); // e.g. 'your_db_name'
            $instanceHost = getenv('INSTANCE_HOST'); // e.g. '127.0.0.1' ('172.17.0.1' for GAE Flex)

            // Connect using TCP
            $dsn = sprintf('pgsql:dbname=%s;host=%s', $dbName, $instanceHost);

            // Connect to the database
            $conn = new PDO(
                $dsn,
                $username,
                $password,
                # ...
            );
        } catch (TypeError $e) {
            throw new RuntimeException(
                sprintf(
                    'Invalid or missing configuration! Make sure you have set ' .
                        '$username, $password, $dbName, and $instanceHost (for TCP mode). ' .
                        'The PHP error was %s',
                    $e->getMessage()
                ),
                $e->getCode(),
                $e
            );
        } catch (PDOException $e) {
            throw new RuntimeException(
                sprintf(
                    'Could not connect to the Cloud SQL Database. Check that ' .
                        'your username and password are correct, that the Cloud SQL ' .
                        'proxy is running, and that the database exists and is ready ' .
                        'for use. For more assistance, refer to %s. The PDO error was %s',
                    'https://cloud.google.com/sql/docs/postgres/connect-external-app',
                    $e->getMessage()
                ),
                $e->getCode(),
                $e
            );
        }

        return $conn;
    }
}

Conectar-se com soquetes Unix

Depois de configurá-lo corretamente, conecte o serviço ao soquete de domínio do Unix da instância do Cloud SQL que foi acessado no sistema de arquivos do ambiente por este caminho: /cloudsql/INSTANCE_CONNECTION_NAME.

O INSTANCE_CONNECTION_NAME usa o formato project:region:instance-id. Encontre-o na página de Visão geral da instância no console do Google Cloud ou executando este comando:

gcloud sql instances describe [INSTANCE_NAME]

Essas conexões são criptografadas automaticamente sem qualquer configuração extra.

Os exemplos de código mostrados abaixo são trechos de exemplos mais completos no site do GitHub. Clique em View on GitHub para ver mais

Observação: o padrão do PostgreSQL exige um sufixo .s.PGSQL.5432 no caminho do soquete. Algumas bibliotecas aplicam esse sufixo automaticamente, mas outras exigem que você especifique o caminho do soquete da seguinte forma:

/cloudsql/INSTANCE_CONNECTION_NAME/.s.PGSQL.5432

Aviso: sistemas operacionais baseados no Linux têm um tamanho máximo de 108 caracteres para o caminho do soquete. Se o tamanho total do caminho exceder esse limite, não será possível se conectar a um soquete por meio do Cloud Build.

Python

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub (em inglês).

import os

import sqlalchemy


def connect_unix_socket() -> sqlalchemy.engine.base.Engine:
    """Initializes a Unix socket connection pool for a Cloud SQL instance of Postgres."""
    # Note: Saving credentials in environment variables is convenient, but not
    # secure - consider a more secure solution such as
    # Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
    # keep secrets safe.
    db_user = os.environ["DB_USER"]  # e.g. 'my-database-user'
    db_pass = os.environ["DB_PASS"]  # e.g. 'my-database-password'
    db_name = os.environ["DB_NAME"]  # e.g. 'my-database'
    unix_socket_path = os.environ[
        "INSTANCE_UNIX_SOCKET"
    ]  # e.g. '/cloudsql/project:region:instance'

    pool = sqlalchemy.create_engine(
        # Equivalent URL:
        # postgresql+pg8000://<db_user>:<db_pass>@/<db_name>
        #                         ?unix_sock=<INSTANCE_UNIX_SOCKET>/.s.PGSQL.5432
        # Note: Some drivers require the `unix_sock` query parameter to use a different key.
        # For example, 'psycopg2' uses the path set to `host` in order to connect successfully.
        sqlalchemy.engine.url.URL.create(
            drivername="postgresql+pg8000",
            username=db_user,
            password=db_pass,
            database=db_name,
            query={"unix_sock": f"{unix_socket_path}/.s.PGSQL.5432"},
        ),
        # ...
    )
    return pool

Java

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub (em inglês).

import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
import javax.sql.DataSource;

public class ConnectorConnectionPoolFactory extends ConnectionPoolFactory {

  // Note: Saving credentials in environment variables is convenient, but not
  // secure - consider a more secure solution such as
  // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
  // keep secrets safe.
  private static final String INSTANCE_CONNECTION_NAME =
      System.getenv("INSTANCE_CONNECTION_NAME");
  private static final String INSTANCE_UNIX_SOCKET = System.getenv("INSTANCE_UNIX_SOCKET");
  private static final String DB_USER = System.getenv("DB_USER");
  private static final String DB_PASS = System.getenv("DB_PASS");
  private static final String DB_NAME = System.getenv("DB_NAME");

  public static DataSource createConnectionPool() {
    // The configuration object specifies behaviors for the connection pool.
    HikariConfig config = new HikariConfig();

    // The following URL is equivalent to setting the config options below:
    // jdbc:postgresql:///<DB_NAME>?cloudSqlInstance=<INSTANCE_CONNECTION_NAME>&
    // socketFactory=com.google.cloud.sql.postgres.SocketFactory&user=<DB_USER>&password=<DB_PASS>
    // See the link below for more info on building a JDBC URL for the Cloud SQL JDBC Socket Factory
    // https://github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory#creating-the-jdbc-url

    // Configure which instance and what database user to connect with.
    config.setJdbcUrl(String.format("jdbc:postgresql:///%s", DB_NAME));
    config.setUsername(DB_USER); // e.g. "root", _postgres"
    config.setPassword(DB_PASS); // e.g. "my-password"

    config.addDataSourceProperty("socketFactory", "com.google.cloud.sql.postgres.SocketFactory");
    config.addDataSourceProperty("cloudSqlInstance", INSTANCE_CONNECTION_NAME);

    // Unix sockets are not natively supported in Java, so it is necessary to use the Cloud SQL
    // Java Connector to connect. When setting INSTANCE_UNIX_SOCKET, the connector will 
    // call an external package that will enable Unix socket connections.
    // Note: For Java users, the Cloud SQL Java Connector can provide authenticated connections
    // which is usually preferable to using the Cloud SQL Proxy with Unix sockets.
    // See https://github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory for details.
    if (INSTANCE_UNIX_SOCKET != null) {
      config.addDataSourceProperty("unixSocketPath", INSTANCE_UNIX_SOCKET);
    }


    // cloudSqlRefreshStrategy set to "lazy" is used to perform a
    // refresh when needed, rather than on a scheduled interval.
    // This is recommended for serverless environments to
    // avoid background refreshes from throttling CPU.
    config.addDataSourceProperty("cloudSqlRefreshStrategy", "lazy");

    // ... Specify additional connection properties here.
    // ...

    // Initialize the connection pool using the configuration object.
    return new HikariDataSource(config);
  }
}

Node.js

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub (em inglês).

const Knex = require('knex');

// createUnixSocketPool initializes a Unix socket connection pool for
// a Cloud SQL instance of Postgres.
const createUnixSocketPool = async config => {
  // Note: Saving credentials in environment variables is convenient, but not
  // secure - consider a more secure solution such as
  // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
  // keep secrets safe.
  return Knex({
    client: 'pg',
    connection: {
      user: process.env.DB_USER, // e.g. 'my-user'
      password: process.env.DB_PASS, // e.g. 'my-user-password'
      database: process.env.DB_NAME, // e.g. 'my-database'
      host: process.env.INSTANCE_UNIX_SOCKET, // e.g. '/cloudsql/project:region:instance'
    },
    // ... Specify additional properties here.
    ...config,
  });
};

C#

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub (em inglês).

using Npgsql;
using System;

namespace CloudSql
{
    public class PostgreSqlUnix
    {
        public static NpgsqlConnectionStringBuilder NewPostgreSqlUnixSocketConnectionString()
        {
            // Equivalent connection string:
            // "Server=<INSTANCE_UNIX_SOCKET>;Uid=<DB_USER>;Pwd=<DB_PASS>;Database=<DB_NAME>"
            var connectionString = new NpgsqlConnectionStringBuilder()
            {
                // The Cloud SQL proxy provides encryption between the proxy and instance.
                SslMode = SslMode.Disable,

                // Note: Saving credentials in environment variables is convenient, but not
                // secure - consider a more secure solution such as
                // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
                // keep secrets safe.
                Host = Environment.GetEnvironmentVariable("INSTANCE_UNIX_SOCKET"), // e.g. '/cloudsql/project:region:instance'
                Username = Environment.GetEnvironmentVariable("DB_USER"), // e.g. 'my-db-user
                Password = Environment.GetEnvironmentVariable("DB_PASS"), // e.g. 'my-db-password'
                Database = Environment.GetEnvironmentVariable("DB_NAME"), // e.g. 'my-database'
            };
            connectionString.Pooling = true;
            // Specify additional properties here.
            return connectionString;
        }
    }
}

Go

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub (em inglês).

package cloudsql

import (
	"database/sql"
	"fmt"
	"log"
	"os"

	// Note: If connecting using the App Engine Flex Go runtime, use
	// "github.com/jackc/pgx/stdlib" instead, since v5 requires
	// Go modules which are not supported by App Engine Flex.
	_ "github.com/jackc/pgx/v5/stdlib"
)

// connectUnixSocket initializes a Unix socket connection pool for
// a Cloud SQL instance of Postgres.
func connectUnixSocket() (*sql.DB, error) {
	mustGetenv := func(k string) string {
		v := os.Getenv(k)
		if v == "" {
			log.Fatalf("Fatal Error in connect_unix.go: %s environment variable not set.\n", k)
		}
		return v
	}
	// Note: Saving credentials in environment variables is convenient, but not
	// secure - consider a more secure solution such as
	// Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
	// keep secrets safe.
	var (
		dbUser         = mustGetenv("DB_USER")              // e.g. 'my-db-user'
		dbPwd          = mustGetenv("DB_PASS")              // e.g. 'my-db-password'
		unixSocketPath = mustGetenv("INSTANCE_UNIX_SOCKET") // e.g. '/cloudsql/project:region:instance'
		dbName         = mustGetenv("DB_NAME")              // e.g. 'my-database'
	)

	dbURI := fmt.Sprintf("user=%s password=%s database=%s host=%s",
		dbUser, dbPwd, dbName, unixSocketPath)

	// dbPool is the pool of database connections.
	dbPool, err := sql.Open("pgx", dbURI)
	if err != nil {
		return nil, fmt.Errorf("sql.Open: %w", err)
	}

	// ...

	return dbPool, nil
}

Ruby

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub (em inglês).

unix: &unix
  adapter: postgresql
  # Configure additional properties here.
  # Note: Saving credentials in environment variables is convenient, but not
  # secure - consider a more secure solution such as
  # Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
  # keep secrets safe.
  username: <%= ENV["DB_USER"] %>  # e.g. "my-database-user"
  password: <%= ENV["DB_PASS"] %> # e.g. "my-database-password"
  database: <%= ENV.fetch("DB_NAME") { "vote_development" } %>
  # Specify the Unix socket path as host
  host: "<%= ENV["INSTANCE_UNIX_SOCKET"] %>"

PHP

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub (em inglês).

namespace Google\Cloud\Samples\CloudSQL\Postgres;

use PDO;
use PDOException;
use RuntimeException;
use TypeError;

class DatabaseUnix
{
    public static function initUnixDatabaseConnection(): PDO
    {
        try {
            // Note: Saving credentials in environment variables is convenient, but not
            // secure - consider a more secure solution such as
            // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
            // keep secrets safe.
            $username = getenv('DB_USER'); // e.g. 'your_db_user'
            $password = getenv('DB_PASS'); // e.g. 'your_db_password'
            $dbName = getenv('DB_NAME'); // e.g. 'your_db_name'
            $instanceUnixSocket = getenv('INSTANCE_UNIX_SOCKET'); // e.g. '/cloudsql/project:region:instance'

            // Connect using UNIX sockets
            $dsn = sprintf(
                'pgsql:dbname=%s;host=%s',
                $dbName,
                $instanceUnixSocket
            );

            // Connect to the database.
            $conn = new PDO(
                $dsn,
                $username,
                $password,
                # ...
            );
        } catch (TypeError $e) {
            throw new RuntimeException(
                sprintf(
                    'Invalid or missing configuration! Make sure you have set ' .
                        '$username, $password, $dbName, ' .
                        'and $instanceUnixSocket (for UNIX socket mode). ' .
                        'The PHP error was %s',
                    $e->getMessage()
                ),
                (int) $e->getCode(),
                $e
            );
        } catch (PDOException $e) {
            throw new RuntimeException(
                sprintf(
                    'Could not connect to the Cloud SQL Database. Check that ' .
                        'your username and password are correct, that the Cloud SQL ' .
                        'proxy is running, and that the database exists and is ready ' .
                        'for use. For more assistance, refer to %s. The PDO error was %s',
                    'https://cloud.google.com/sql/docs/postgres/connect-external-app',
                    $e->getMessage()
                ),
                (int) $e->getCode(),
                $e
            );
        }

        return $conn;
    }
}

É possível usar o proxy de autenticação do Cloud SQL em uma etapa do Cloud Build para permitir conexões com o banco de dados. Essa configuração:

1. Cria o contêiner e o envia para o Artifact Registry.
2. Cria um segundo contêiner, copiando o binário do proxy de autenticação do Cloud SQL.
• Os contêineres criados pelo Cloud Build não precisam ser enviados a nenhum registro e são descartados na conclusão da criação.
3. Usando o segundo contêiner, inicia o proxy de autenticação do Cloud SQL e executa todos os comandos de migração.

steps:
  - id: install-proxy
    name: gcr.io/cloud-builders/wget
    entrypoint: sh
    args:
      - -c
      - |
        wget -O /workspace/cloud-sql-proxy https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/2.14.3
        chmod +x /workspace/cloud-sql-proxy

 - id: migrate
    waitFor: ['install-proxy']
    name: YOUR_CONTAINER_IMAGE_NAME
    entrypoint: sh
    env:
      - "DATABASE_NAME=${_DATABASE_NAME}"
      - "DATABASE_USER=${_DATABASE_USER}"
      - "DATABASE_PORT=${_DATABASE_PORT}"
      - "INSTANCE_CONNECTION_NAME=${_INSTANCE_CONNECTION_NAME}"
    secretEnv:
      - DATABASE_PASS
    args:
      - "-c"
      - |
        /workspace/cloud-sql-proxy ${_INSTANCE_CONNECTION_NAME} --port ${_DATABASE_PORT} & sleep 2;
        # Cloud SQL Proxy is now up and running, add your own logic below to connect
        python migrate.py # For example

  options:
    dynamic_substitutions: true

  substitutions:
    _DATABASE_USER: myuser
    _DATABASE_NAME: mydatabase
    _INSTANCE_CONNECTION_NAME: ${PROJECT_ID}:us-central1:myinstance
    _DATABASE_PORT: '5432'
    _DATABASE_PASSWORD_KEY: database_password
    _AR_REPO_REGION: us-central1
    _AR_REPO_NAME: my-docker-repo
    _IMAGE_NAME: ${_AR_REPO_REGION}-docker.pkg.dev/${PROJECT_ID}/${_AR_REPO_NAME}/sample-sql-proxy

  availableSecrets:
    secretManager:
      - versionName: projects/$PROJECT_ID/secrets/${_DATABASE_PASSWORD_KEY}/versions/latest
        env: "DATABASE_PASS"

O exemplo de código do Cloud Build mostra como executar um script hipotético migrate.py após implantar o aplicativo de exemplo anterior para atualizar o banco de dados do Cloud SQL usando o proxy de autenticação do Cloud SQL e o Cloud Build. Para executar esta amostra de código do Cloud Build, siga as etapas necessárias:

1. Crie um nome de pasta sql-proxy.
2. Crie um arquivo Dockerfile na pasta sql-proxy com a única linha de código a seguir no conteúdo do arquivo:

       FROM gcr.io/gcp-runtimes/ubuntu_20_0_4
       

3. Crie um arquivo cloudbuild.yaml na pasta sql-proxy.
4. Atualize o cloudbuild.yaml arquivo:
   1. Copie o código de amostra do Cloud Build anterior e cole-o no arquivo cloudbuild.yaml.
   2. Substitua os valores de marcador a seguir pelos valores usados no projeto:
      • mydatabase
      • myuser
      • myinstance
5. Crie um secret chamado database_password no Secret Manager.
   • Para que a conta de serviço do Cloud Build acesse esse secret, é necessário conceder a ela o papel de Acessador de secrets do Gerenciador de secrets no IAM. Para mais informações, consulte Como usar secrets do Gerenciador de secrets.
6. Crie um arquivo de script migrate.py na pasta sql-proxy.
   • O script pode fazer referência às seguintes variáveis de ambiente e ao secret criado no arquivo cloudbuild.yaml usando os seguintes exemplos:
     • os.getenv('DATABASE_NAME')
     • os.getenv('DATABASE_USER')
     • os.getenv('DATABASE_PASS')
     • os.getenv('INSTANCE_CONNECTION_NAME')
   • Para fazer referência às mesmas variáveis de um script de Bash (por exemplo: migrate.sh), use os exemplos a seguir.
     • $DATABASE_NAME
     • $DATABASE_USER
     • $DATABASE_PASS
     • $INSTANCE_CONNECTION_NAME
7. Execute o seguinte comando gcloud builds submit para criar um contêiner com o proxy de autenticação do Cloud SQL, inicie esse proxy e execute o script migrate.py:

       gcloud builds submit --config cloudbuild.yaml
       

IP particular

Para caminhos de IP particulares, o aplicativo se conecta diretamente à instância via pools particulares. Esse método usa TCP para a conexão direta com a instância do Cloud SQL sem usar o proxy de autenticação do Cloud SQL.

Conectar com TCP

Conecte-se usando o endereço IP privado da sua instância do Cloud SQL como o host e a porta 5432.

Python

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

import os
import ssl

import sqlalchemy


def connect_tcp_socket() -> sqlalchemy.engine.base.Engine:
    """Initializes a TCP connection pool for a Cloud SQL instance of Postgres."""
    # Note: Saving credentials in environment variables is convenient, but not
    # secure - consider a more secure solution such as
    # Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
    # keep secrets safe.
    db_host = os.environ[
        "INSTANCE_HOST"
    ]  # e.g. '127.0.0.1' ('172.17.0.1' if deployed to GAE Flex)
    db_user = os.environ["DB_USER"]  # e.g. 'my-db-user'
    db_pass = os.environ["DB_PASS"]  # e.g. 'my-db-password'
    db_name = os.environ["DB_NAME"]  # e.g. 'my-database'
    db_port = os.environ["DB_PORT"]  # e.g. 5432

    pool = sqlalchemy.create_engine(
        # Equivalent URL:
        # postgresql+pg8000://<db_user>:<db_pass>@<db_host>:<db_port>/<db_name>
        sqlalchemy.engine.url.URL.create(
            drivername="postgresql+pg8000",
            username=db_user,
            password=db_pass,
            host=db_host,
            port=db_port,
            database=db_name,
        ),
        # ...
    )
    return pool

Java

Para conferir esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

Observação:

• CLOUD_SQL_CONNECTION_NAME precisa ser representado como <MEU-PROJETO>:<REGIÃO-DA-INSTÂNCIA>:<NOME-DA-INSTÂNCIA>
• O uso do argumento ipTypes=PRIVATE forçará o SocketFactory a se conectar ao IP privado associado de uma instância
• Consulte os requisitos de versão de fábrica do soquete JDBC para o arquivo pom.xml aqui.

import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
import javax.sql.DataSource;

public class TcpConnectionPoolFactory extends ConnectionPoolFactory {

  // Note: Saving credentials in environment variables is convenient, but not
  // secure - consider a more secure solution such as
  // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
  // keep secrets safe.
  private static final String DB_USER = System.getenv("DB_USER");
  private static final String DB_PASS = System.getenv("DB_PASS");
  private static final String DB_NAME = System.getenv("DB_NAME");

  private static final String INSTANCE_HOST = System.getenv("INSTANCE_HOST");
  private static final String DB_PORT = System.getenv("DB_PORT");


  public static DataSource createConnectionPool() {
    // The configuration object specifies behaviors for the connection pool.
    HikariConfig config = new HikariConfig();

    // The following URL is equivalent to setting the config options below:
    // jdbc:postgresql://<INSTANCE_HOST>:<DB_PORT>/<DB_NAME>?user=<DB_USER>&password=<DB_PASS>
    // See the link below for more info on building a JDBC URL for the Cloud SQL JDBC Socket Factory
    // https://github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory#creating-the-jdbc-url

    // Configure which instance and what database user to connect with.
    config.setJdbcUrl(String.format("jdbc:postgresql://%s:%s/%s", INSTANCE_HOST, DB_PORT, DB_NAME));
    config.setUsername(DB_USER); // e.g. "root", "postgres"
    config.setPassword(DB_PASS); // e.g. "my-password"


    // ... Specify additional connection properties here.
    // ...

    // Initialize the connection pool using the configuration object.
    return new HikariDataSource(config);
  }
}

Node.js

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

const Knex = require('knex');
const fs = require('fs');

// createTcpPool initializes a TCP connection pool for a Cloud SQL
// instance of Postgres.
const createTcpPool = async config => {
  // Note: Saving credentials in environment variables is convenient, but not
  // secure - consider a more secure solution such as
  // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
  // keep secrets safe.
  const dbConfig = {
    client: 'pg',
    connection: {
      host: process.env.INSTANCE_HOST, // e.g. '127.0.0.1'
      port: process.env.DB_PORT, // e.g. '5432'
      user: process.env.DB_USER, // e.g. 'my-user'
      password: process.env.DB_PASS, // e.g. 'my-user-password'
      database: process.env.DB_NAME, // e.g. 'my-database'
    },
    // ... Specify additional properties here.
    ...config,
  };
  // Establish a connection to the database.
  return Knex(dbConfig);
};

Go

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

package cloudsql

import (
	"database/sql"
	"fmt"
	"log"
	"os"

	// Note: If connecting using the App Engine Flex Go runtime, use
	// "github.com/jackc/pgx/stdlib" instead, since v5 requires
	// Go modules which are not supported by App Engine Flex.
	_ "github.com/jackc/pgx/v5/stdlib"
)

// connectTCPSocket initializes a TCP connection pool for a Cloud SQL
// instance of Postgres.
func connectTCPSocket() (*sql.DB, error) {
	mustGetenv := func(k string) string {
		v := os.Getenv(k)
		if v == "" {
			log.Fatalf("Fatal Error in connect_tcp.go: %s environment variable not set.", k)
		}
		return v
	}
	// Note: Saving credentials in environment variables is convenient, but not
	// secure - consider a more secure solution such as
	// Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
	// keep secrets safe.
	var (
		dbUser    = mustGetenv("DB_USER")       // e.g. 'my-db-user'
		dbPwd     = mustGetenv("DB_PASS")       // e.g. 'my-db-password'
		dbTCPHost = mustGetenv("INSTANCE_HOST") // e.g. '127.0.0.1' ('172.17.0.1' if deployed to GAE Flex)
		dbPort    = mustGetenv("DB_PORT")       // e.g. '5432'
		dbName    = mustGetenv("DB_NAME")       // e.g. 'my-database'
	)

	dbURI := fmt.Sprintf("host=%s user=%s password=%s port=%s database=%s",
		dbTCPHost, dbUser, dbPwd, dbPort, dbName)


	// dbPool is the pool of database connections.
	dbPool, err := sql.Open("pgx", dbURI)
	if err != nil {
		return nil, fmt.Errorf("sql.Open: %w", err)
	}

	// ...

	return dbPool, nil
}

C#

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub (em inglês).

using Npgsql;
using System;

namespace CloudSql
{
    public class PostgreSqlTcp
    {
        public static NpgsqlConnectionStringBuilder NewPostgreSqlTCPConnectionString()
        {
            // Equivalent connection string:
            // "Uid=<DB_USER>;Pwd=<DB_PASS>;Host=<INSTANCE_HOST>;Database=<DB_NAME>;"
            var connectionString = new NpgsqlConnectionStringBuilder()
            {
                // Note: Saving credentials in environment variables is convenient, but not
                // secure - consider a more secure solution such as
                // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
                // keep secrets safe.
                Host = Environment.GetEnvironmentVariable("INSTANCE_HOST"),     // e.g. '127.0.0.1'
                // Set Host to 'cloudsql' when deploying to App Engine Flexible environment
                Username = Environment.GetEnvironmentVariable("DB_USER"), // e.g. 'my-db-user'
                Password = Environment.GetEnvironmentVariable("DB_PASS"), // e.g. 'my-db-password'
                Database = Environment.GetEnvironmentVariable("DB_NAME"), // e.g. 'my-database'

                // The Cloud SQL proxy provides encryption between the proxy and instance.
                SslMode = SslMode.Disable,
            };
            connectionString.Pooling = true;
            // Specify additional properties here.
            return connectionString;
        }
    }
}

Ruby

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

tcp: &tcp
  adapter: postgresql
  # Configure additional properties here.
  # Note: Saving credentials in environment variables is convenient, but not
  # secure - consider a more secure solution such as
  # Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
  # keep secrets safe.
  username: <%= ENV["DB_USER"] %>  # e.g. "my-database-user"
  password: <%= ENV["DB_PASS"] %> # e.g. "my-database-password"
  database: <%= ENV.fetch("DB_NAME") { "vote_development" } %>
  host: <%= ENV.fetch("INSTANCE_HOST") { "127.0.0.1" }%> # '172.17.0.1' if deployed to GAE Flex
  port: <%= ENV.fetch("DB_PORT") { 5432 }%>

PHP

Para ver esse snippet no contexto de um aplicativo da Web, consulte o README no GitHub.

namespace Google\Cloud\Samples\CloudSQL\Postgres;

use PDO;
use PDOException;
use RuntimeException;
use TypeError;

class DatabaseTcp
{
    public static function initTcpDatabaseConnection(): PDO
    {
        try {
            // Note: Saving credentials in environment variables is convenient, but not
            // secure - consider a more secure solution such as
            // Cloud Secret Manager (https://cloud.google.com/secret-manager) to help
            // keep secrets safe.
            $username = getenv('DB_USER'); // e.g. 'your_db_user'
            $password = getenv('DB_PASS'); // e.g. 'your_db_password'
            $dbName = getenv('DB_NAME'); // e.g. 'your_db_name'
            $instanceHost = getenv('INSTANCE_HOST'); // e.g. '127.0.0.1' ('172.17.0.1' for GAE Flex)

            // Connect using TCP
            $dsn = sprintf('pgsql:dbname=%s;host=%s', $dbName, $instanceHost);

            // Connect to the database
            $conn = new PDO(
                $dsn,
                $username,
                $password,
                # ...
            );
        } catch (TypeError $e) {
            throw new RuntimeException(
                sprintf(
                    'Invalid or missing configuration! Make sure you have set ' .
                        '$username, $password, $dbName, and $instanceHost (for TCP mode). ' .
                        'The PHP error was %s',
                    $e->getMessage()
                ),
                $e->getCode(),
                $e
            );
        } catch (PDOException $e) {
            throw new RuntimeException(
                sprintf(
                    'Could not connect to the Cloud SQL Database. Check that ' .
                        'your username and password are correct, that the Cloud SQL ' .
                        'proxy is running, and that the database exists and is ready ' .
                        'for use. For more assistance, refer to %s. The PDO error was %s',
                    'https://cloud.google.com/sql/docs/postgres/connect-external-app',
                    $e->getMessage()
                ),
                $e->getCode(),
                $e
            );
        }

        return $conn;
    }
}

Em seguida, crie uma etapa do Cloud Build para executar o código diretamente.

steps:
  - id: "docker-build"
    name: "gcr.io/cloud-builders/docker"
    args: ["build", "-t", "${_IMAGE_NAME}", "sql-private-pool/."]

  - id: "docker-push"
    name: "gcr.io/cloud-builders/docker"
    args: ["push", "${_IMAGE_NAME}"]

  - id: "migration"
    name: "${_IMAGE_NAME}"
    dir: sql-private-pool
    env:
      - "DATABASE_NAME=mydatabase"
      - "DATABASE_USER=myuser"
      - "DATABASE_HOST=${_DATABASE_HOST}"
      - "DATABASE_TYPE=${_DATABASE_TYPE}"
    secretEnv:
      - DATABASE_PASS
    entrypoint: python   # for example
    args: ["migrate.py"] # for example

options:
  pool:
    name: projects/$PROJECT_ID/locations/us-central1/workerPools/private-pool
  dynamicSubstitutions: true

substitutions:
  _DATABASE_PASSWORD_KEY: database_password
  _DATABASE_TYPE: postgres
  _AR_REPO_REGION: us-central1
  _AR_REPO_NAME: my-docker-repo
  _IMAGE_NAME: ${_AR_REPO_REGION}-docker.pkg.dev/${PROJECT_ID}/${_AR_REPO_NAME}/sample-private-pool

availableSecrets:
  secretManager:
    - versionName: projects/$PROJECT_ID/secrets/${_DATABASE_PASSWORD_KEY}/versions/latest
      env: DATABASE_PASS

A amostra de código do Cloud Build acima mostra como executar um script hipotético de migração após implantar o aplicativo de amostra acima para atualizar o banco de dados do Cloud SQL usando o Cloud Build. Para executar esta amostra de código do Cloud Build, siga as etapas necessárias:

1. Crie um nome de pasta sql-private-pool.
2. Crie um arquivo Dockerfile na pasta sql-private-pool com a única linha de código a seguir no conteúdo do arquivo:

   FROM gcr.io/gcp-runtimes/ubuntu_20_0_4

3. Crie um arquivo cloudbuild.yaml na pasta sql-private-pool.
4. Atualize o cloudbuild.yaml arquivo:
   1. Copie o código de amostra do Cloud Build acima e cole-o no arquivo cloudbuild.yaml.
   2. Substitua os valores de marcador a seguir pelos valores usados no projeto:
      • mydatabase
      • myuser
      • No formulário, databasehost, host:port.
5. Crie um secret chamado database_password no Secret Manager.
   • Para que a conta de serviço do Cloud Build acesse esse secret, é necessário conceder a ele o papel de Acessor de secrets do Gerenciador de secrets no IAM. Para mais informações, consulte Como usar secrets do Gerenciador de secrets.
6. Crie um arquivo de script migrate.py na pasta sql-proxy.
   • O script pode fazer referência às seguintes variáveis de ambiente e ao secret criado no arquivo cloudbuild.yaml usando os seguintes exemplos:
     • os.getenv('DATABASE_NAME')
     • os.getenv('DATABASE_USER')
     • os.getenv('DATABASE_PASS')
     • os.getenv('DATABASE_HOST')
   • Para fazer referência às mesmas variáveis de um script de Bash (por exemplo: migrate.sh), use os exemplos a seguir.
     • $DATABASE_NAME
     • $DATABASE_USER
     • $DATABASE_PASS
     • $DATABASE_HOST
7. Execute o seguinte comando gcloud builds submit para criar um contêiner com o proxy de autenticação do Cloud SQL, inicie esse proxy e execute o script migrate.py:

   gcloud builds submit --config cloudbuild.yaml

Práticas recomendadas e outras informações

Use o proxy do Cloud SQL Auth ao testar seu aplicativo localmente. Consulte o guia de início rápido para o uso do proxy de autenticação do Cloud SQL e confira instruções detalhadas.

Se preferir, teste usando o Cloud SQL Proxy por meio de um contêiner do Docker.

Migrações de esquema de banco de dados

Ao configurar o Cloud Build para se conectar ao Cloud SQL, é possível executar tarefas de migração de esquema de banco de dados no Cloud Build usando o mesmo código implantado em qualquer outra plataforma sem servidor.

Como usar o Gerenciador de secrets

Use o Secret Manager para incluir informações confidenciais nos seus builds.