列出数据政策

列出指定项目中的所有数据政策。

代码示例

Node.js

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

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

const {DataPolicyServiceClient} =
  require('@google-cloud/bigquery-datapolicies').v2;
const {status} = require('@grpc/grpc-js');

const client = new DataPolicyServiceClient();

/**
 * Lists all data policies in a given project and location.
 *
 * Data policies define rules for data masking, row-level security, or column-level security.
 *
 * @param {string} projectId The Google Cloud project ID. (for example, 'example-project-id')
 * @param {string} location The Google Cloud location of the data policies. (For example, 'us')
 */
async function listDataPolicies(projectId, location) {
  const parent = `projects/${projectId}/locations/${location}`;

  const request = {
    parent,
  };

  try {
    console.log(
      `Listing data policies for project: ${projectId} in location: ${location}`,
    );
    const [dataPolicies] = await client.listDataPolicies(request);

    if (dataPolicies.length === 0) {
      console.log(
        `No data policies found in location ${location} for project ${projectId}.`,
      );
      return;
    }

    console.log('Data Policies:');
    for (const dataPolicy of dataPolicies) {
      console.log(`  Data Policy Name: ${dataPolicy.name}`);
      console.log(`    ID: ${dataPolicy.dataPolicyId}`);
      console.log(`    Type: ${dataPolicy.dataPolicyType}`);
      if (dataPolicy.policyTag) {
        console.log(`    Policy Tag: ${dataPolicy.policyTag}`);
      }
      if (dataPolicy.grantees && dataPolicy.grantees.length > 0) {
        console.log(`    Grantees: ${dataPolicy.grantees.join(', ')}`);
      }
      if (dataPolicy.dataMaskingPolicy) {
        if (dataPolicy.dataMaskingPolicy.predefinedExpression) {
          console.log(
            `    Data Masking Predefined Expression: ${dataPolicy.dataMaskingPolicy.predefinedExpression}`,
          );
        } else if (dataPolicy.dataMaskingPolicy.routine) {
          console.log(
            `    Data Masking Routine: ${dataPolicy.dataMaskingPolicy.routine}`,
          );
        }
      }
    }

    console.log(`Successfully listed ${dataPolicies.length} data policies.`);
  } catch (err) {
    if (err.code === status.NOT_FOUND) {
      console.error(
        `Error: The project or location '${location}' for project '${projectId}' was not found. ` +
          'Make sure the project ID and location are correct and that the BigQuery Data Policy API is enabled.',
      );
    } else if (err.code === status.PERMISSION_DENIED) {
      console.error(
        `Error: Permission denied when listing data policies for project '${projectId}' in location '${location}'. ` +
          'Make sure the authenticated account has the necessary permissions (For example, bigquery.datapolicies.list).',
      );
    } else {
      console.error(`Error listing data policies: ${err.message}`);
    }
  }
}

Python

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

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

import google.api_core.exceptions
from google.cloud import bigquery_datapolicies_v2

client = bigquery_datapolicies_v2.DataPolicyServiceClient()


def list_data_policies(project_id: str, location: str) -> None:
    """Lists all data policies in a specified project.

    Args:
        project_id: The Google Cloud project ID.
        location: The geographic location of the data policies (for example, "us", "us-central1").
    """

    parent = f"projects/{project_id}/locations/{location}"

    try:
        request = bigquery_datapolicies_v2.ListDataPoliciesRequest(parent=parent)

        print(
            f"Listing data policies for project '{project_id}' in location '{location}':"
        )
        page_result = client.list_data_policies(request=request)

        found_policies = False
        for data_policy in page_result:
            found_policies = True
            print(f"  Data Policy Name: {data_policy.name}")
            print(f"  Data Policy ID: {data_policy.data_policy_id}")
            print(f"  Data Policy Type: {data_policy.data_policy_type.name}")
            if data_policy.policy_tag:
                print(f"  Policy Tag: {data_policy.policy_tag}")
            if data_policy.grantees:
                print(f"  Grantees: {', '.join(data_policy.grantees)}")
            print("-" * 20)

        if not found_policies:
            print("No data policies found.")

    except google.api_core.exceptions.NotFound as e:
        print(f"Error: The specified project or location was not found or accessible.")
        print(f"Details: {e}")
        print(
            "Make sure the project ID and location are correct and you have the necessary permissions."
        )
    except Exception as e:
        print(f"An unexpected error occurred: {e}")

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。