更新 IAM 政策

更改表的 IAM 政策。

深入探索

如需查看包含此代码示例的详细文档，请参阅以下内容：

• 使用 IAM 控制对资源的访问权限

代码示例

Go

试用此示例之前，请按照 BigQuery 快速入门：使用客户端库中的 Go 设置说明进行操作。如需了解详情，请参阅 BigQuery Go API 参考文档。

如需向 BigQuery 进行身份验证，请设置应用默认凭据。 如需了解详情，请参阅为客户端库设置身份验证。

import (
	"context"
	"fmt"

	"cloud.google.com/go/bigquery"
	"cloud.google.com/go/iam"
)

// updateIAMPolicy demonstrates updating the ACL on a BigQuery table by adding a new entry to
// an existing policy.
func updateIAMPolicy(projectID, datasetID, tableID string) error {
	// projectID := "my-project-id"
	// datasetID := "mydataset"
	// tableID := "mytable"
	ctx := context.Background()
	client, err := bigquery.NewClient(ctx, projectID)
	if err != nil {
		return fmt.Errorf("bigquery.NewClient: %w", err)
	}
	defer client.Close()

	table := client.Dataset(datasetID).Table(tableID)
	policy, err := table.IAM().Policy(ctx)
	if err != nil {
		return fmt.Errorf("failed to get table policy: %w", err)
	}
	newRole := iam.RoleName("roles/bigquery.dataViewer")
	newMember := "allAuthenticatedUsers"
	policy.Add(newMember, newRole)

	if err := table.IAM().SetPolicy(ctx, policy); err != nil {
		return fmt.Errorf("failed to set new table policy: %w", err)
	}

	return nil
}

Java

试用此示例之前，请按照 BigQuery 快速入门：使用客户端库中的 Java 设置说明进行操作。如需了解详情，请参阅 BigQuery Java API 参考文档。

如需向 BigQuery 进行身份验证，请设置应用默认凭据。 如需了解详情，请参阅为客户端库设置身份验证。

import com.google.cloud.Identity;
import com.google.cloud.Policy;
import com.google.cloud.Role;
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.TableId;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

// Sample to update iam policy in table
public class UpdateIamPolicy {

  public static void main(String[] args) {
    // TODO(developer): Replace these variables before running the sample.
    String datasetName = "MY_DATASET_NAME";
    String tableName = "MY_TABLE_NAME";
    updateIamPolicy(datasetName, tableName);
  }

  public static void updateIamPolicy(String datasetName, String tableName) {
    try {
      // Initialize client that will be used to send requests. This client only needs to be created
      // once, and can be reused for multiple requests.
      BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();

      TableId tableId = TableId.of(datasetName, tableName);

      Policy policy = bigquery.getIamPolicy(tableId);
      Map<Role, Set<Identity>> binding = new HashMap<>(policy.getBindings());
      binding.remove(Role.of("roles/bigquery.dataViewer"));

      policy.toBuilder().setBindings(binding).build();
      bigquery.setIamPolicy(tableId, policy);

      System.out.println("Iam policy updated successfully");
    } catch (BigQueryException e) {
      System.out.println("Iam policy was not updated. \n" + e.toString());
    }
  }
}

后续步骤

如需搜索和过滤其他 Google Cloud 产品的代码示例，请参阅 Google Cloud 示例浏览器。