描述数据库 - Amazon Timestream
Amazon Web Services 文档中描述的 Amazon Web Services 服务或功能可能因区域而异。要查看适用于中国区域的差异,请参阅 中国的 Amazon Web Services 服务入门 (PDF)

从2025年6月20日起,亚马逊Timestream版 LiveAnalytics 将不再向新客户开放。如果您想使用亚马逊 Timestream LiveAnalytics,请在该日期之前注册。现有客户可以继续照常使用该服务。有关更多信息,请参阅 Amazon Timestream 以了解 LiveAnalytics 可用性变更。

本文属于机器翻译版本。若本译文内容与英语原文存在差异,则一律以英文原文为准。

描述数据库

您可以使用以下代码片段来获取有关新创建的数据库的属性的信息。

注意

这些代码片段基于上的完整示例应用程序。GitHub有关如何开始使用示例应用程序的更多信息,请参阅示例应用程序

Java
public void describeDatabase() { System.out.println("Describing database"); final DescribeDatabaseRequest describeDatabaseRequest = new DescribeDatabaseRequest(); describeDatabaseRequest.setDatabaseName(DATABASE_NAME); try { DescribeDatabaseResult result = amazonTimestreamWrite.describeDatabase(describeDatabaseRequest); final Database databaseRecord = result.getDatabase(); final String databaseId = databaseRecord.getArn(); System.out.println("Database " + DATABASE_NAME + " has id " + databaseId); } catch (final Exception e) { System.out.println("Database doesn't exist = " + e); throw e; } }
Java v2
public void describeDatabase() { System.out.println("Describing database"); final DescribeDatabaseRequest describeDatabaseRequest = DescribeDatabaseRequest.builder() .databaseName(DATABASE_NAME).build(); try { DescribeDatabaseResponse response = timestreamWriteClient.describeDatabase(describeDatabaseRequest); final Database databaseRecord = response.database(); final String databaseId = databaseRecord.arn(); System.out.println("Database " + DATABASE_NAME + " has id " + databaseId); } catch (final Exception e) { System.out.println("Database doesn't exist = " + e); throw e; } }
Go
describeDatabaseOutput, err := writeSvc.DescribeDatabase(describeDatabaseInput) if err != nil { fmt.Println("Error:") fmt.Println(err) } else { fmt.Println("Describe database is successful, below is the output:") fmt.Println(describeDatabaseOutput) }
Python
def describe_database(self): print("Describing database") try: result = self.client.describe_database(DatabaseName=Constant.DATABASE_NAME) print("Database [%s] has id [%s]" % (Constant.DATABASE_NAME, result['Database']['Arn'])) except self.client.exceptions.ResourceNotFoundException: print("Database doesn't exist") except Exception as err: print("Describe database failed:", err)
Node.js

以下代码段使用 Amazon 适用于 JavaScript v3 的 SDK。有关如何安装客户端和用法的更多信息,请参阅 Timestream Write Client- Amazon 适用于 JavaScript v3 的 SDK

另请参阅类 DescribeDatabaseCommandDescribeDatabase

import { TimestreamWriteClient, DescribeDatabaseCommand } from "@aws-sdk/client-timestream-write"; const writeClient = new TimestreamWriteClient({ region: "us-east-1" }); const params = { DatabaseName: "testDbFromNode" }; const command = new DescribeDatabaseCommand(params); try { const data = await writeClient.send(command); console.log(`Database ${data.Database.DatabaseName} has id ${data.Database.Arn}`); } catch (error) { if (error.code === 'ResourceNotFoundException') { console.log("Database doesn't exist."); } else { console.log("Describe database failed.", error); throw error; } }

以下代码段使用适用于 JavaScript V2 的 Amazon SDK 风格。它基于 Node.js 示例 Amazon Timestream 中的示例 LiveAnalytics 应用程序,供其上使用。 GitHub

async function describeDatabase () { console.log("Describing Database"); const params = { DatabaseName: constants.DATABASE_NAME }; const promise = writeClient.describeDatabase(params).promise(); await promise.then( (data) => { console.log(`Database ${data.Database.DatabaseName} has id ${data.Database.Arn}`); }, (err) => { if (err.code === 'ResourceNotFoundException') { console.log("Database doesn't exist."); } else { console.log("Describe database failed.", err); throw err; } } ); }
.NET
public async Task DescribeDatabase() { Console.WriteLine("Describing Database"); try { var describeDatabaseRequest = new DescribeDatabaseRequest { DatabaseName = Constants.DATABASE_NAME }; DescribeDatabaseResponse response = await writeClient.DescribeDatabaseAsync(describeDatabaseRequest); Console.WriteLine($"Database {Constants.DATABASE_NAME} has id:{response.Database.Arn}"); } catch (ResourceNotFoundException) { Console.WriteLine("Database does not exist."); } catch (Exception e) { Console.WriteLine("Describe database failed:" + e.ToString()); } }