Acessar a política de IAM de uma reserva

Recupera a política do Identity and Access Management (IAM) para uma reserva do BigQuery. A política define quais principais têm quais papéis e é usada para visualizar as configurações de controle de acesso do recurso.

Exemplo de código

Java

Antes de testar esta amostra, siga as instruções de configuração do Java no Guia de início rápido do BigQuery: como usar bibliotecas de cliente. Para mais informações, consulte a documentação de referência da API BigQuery em Java.

Para autenticar no BigQuery, configure o Application Default Credentials. Para mais informações, acesse Configurar a autenticação para bibliotecas de cliente.

import com.google.api.gax.rpc.ApiException;
import com.google.api.gax.rpc.NotFoundException;
import com.google.cloud.bigquery.reservation.v1.ReservationName;
import com.google.cloud.bigquery.reservation.v1.ReservationServiceClient;
import com.google.iam.v1.Binding;
import com.google.iam.v1.GetIamPolicyRequest;
import com.google.iam.v1.Policy;
import java.io.IOException;

public class GetIamPolicy {

  /**
   * Retrieves the IAM policy for a specified BigQuery reservation. An IAM policy is a collection
   * of bindings that associates one or more principals with a single role.
   *
   * @param projectId The Google Cloud project ID (for example, "example-project-id").
   * @param location The geographic location of the reservation (for example, "us-central1").
   * @param reservationId The ID of the reservation to retrieve the IAM policy for (for example,
   *     "example-reservation").
   */
  public static void getReservationIamPolicy(
      String projectId, String location, String reservationId) {
    ReservationName resource = ReservationName.of(projectId, location, reservationId);

    GetIamPolicyRequest request =
        GetIamPolicyRequest.newBuilder().setResource(resource.toString()).build();

    try (ReservationServiceClient client = ReservationServiceClient.create()) {
      Policy policy = client.getIamPolicy(request);
      System.out.printf("Got IAM policy for reservation: %s%n", resource);
      for (Binding binding : policy.getBindingsList()) {
        System.out.printf("  Role: %s%n", binding.getRole());
        System.out.printf("  Members: %s%n", binding.getMembersList());
      }
    } catch (NotFoundException err) {
      System.err.printf(
          "error: reservation '%s' not found: %s%n", resource, err.getMessage());
    } catch (ApiException | IOException err) {
      System.err.printf(
          "error: failed to get IAM policy for reservation '%s': %s%n", resource, err.getMessage());
    }
  }

Node.js

Antes de testar esta amostra, siga as instruções de configuração do Node.js no Guia de início rápido do BigQuery: como usar bibliotecas de cliente. Para mais informações, consulte a documentação de referência da API BigQuery em Node.js.

Para autenticar no BigQuery, configure o Application Default Credentials. Para mais informações, acesse Configurar a autenticação para bibliotecas de cliente.

const {
  ReservationServiceClient,
} = require('@google-cloud/bigquery-reservation').v1;
const {status} = require('@grpc/grpc-js');

const client = new ReservationServiceClient();

/**
 * Gets the IAM policy for a reservation.
 * An IAM policy is a collection of bindings that associates one or more members,
 * such as service accounts or users, with a single role.
 *
 * @param {string} projectId - Google Cloud project ID, for example "example-project-id".
 * @param {string} location - Location of the reservation, for example "us-central1".
 * @param {string} reservationId - ID of the reservation, for example "example-reservation".
 */
async function getReservationIamPolicy(
  projectId,
  location = 'us-central1',
  reservationId = 'example-reservation',
) {
  const resource = `projects/${projectId}/locations/${location}/reservations/${reservationId}`;
  const request = {
    resource,
  };

  try {
    const [policy] = await client.getIamPolicy(request);

    console.log(`Policy for reservation ${reservationId}:`);
    if (policy.bindings && policy.bindings.length > 0) {
      console.log(JSON.stringify(policy.bindings, null, 2));
    } else {
      console.log('This reservation has no policy bindings.');
    }
  } catch (err) {
    if (err.code === status.NOT_FOUND) {
      console.log(
        `Reservation '${reservationId}' not found in project '${projectId}' at location '${location}'.`,
      );
    } else {
      console.error('Error getting IAM policy:', err);
    }
  }
}

Python

Antes de testar esta amostra, siga as instruções de configuração do Python no Guia de início rápido do BigQuery: como usar bibliotecas de cliente. Para mais informações, consulte a documentação de referência da API BigQuery em Python.

Para autenticar no BigQuery, configure o Application Default Credentials. Para mais informações, acesse Configurar a autenticação para bibliotecas de cliente.

from google.api_core.exceptions import NotFound
from google.cloud import bigquery_reservation_v1

client = bigquery_reservation_v1.ReservationServiceClient()


def get_reservation_iam_policy(project_id: str, location: str, reservation_id: str):
    """Gets the IAM policy for a reservation.

    An IAM policy is a collection of bindings that associates one or more
    principals with a single role. This sample demonstrates how to retrieve
    the policy for a reservation.

    Args:
        project_id: The Google Cloud project ID.
        location: The geographic location of the reservation, such as "us-central1".
        reservation_id: The ID of the reservation to get the policy for.
    """
    resource = client.reservation_path(project_id, location, reservation_id)

    try:
        policy = client.get_iam_policy(resource=resource)

        print(f"Got IAM policy for reservation: {resource}")
        for binding in policy.bindings:
            print(f"  Role: {binding.role}")
            print(f"  Members: {binding.members}")
    except NotFound:
        print(f"Reservation not found: {resource}")

A seguir

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