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使用 Amazon Keyspaces 的代码示例 Amazon SDKs
以下代码示例展示了如何将 Amazon Keyspaces 与 Amazon 软件开发套件 (SDK)。
基础知识是向您展示如何在服务中执行基本操作的代码示例。
操作是大型程序的代码摘录,必须在上下文中运行。您可以通过操作了解如何调用单个服务函数,还可以通过函数相关场景的上下文查看操作。
有关完整列表 Amazon SDK开发者指南和代码示例,请参阅将此服务与 Amazon SDK。本主题还包括有关入门的信息以及有关先前SDK版本的详细信息。
开始使用
以下代码示例展示了如何开始使用 Amazon Keyspaces。
- .NET
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- Amazon SDK for .NET
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注意
还有更多相关信息 GitHub。查找完整的示例,学习如何设置和运行 Amazon 代码示例存储库
。 namespace KeyspacesActions; public class HelloKeyspaces { private static ILogger logger = null!; static async Task Main(string[] args) { // Set up dependency injection for Amazon Keyspaces (for Apache Cassandra). using var host = Host.CreateDefaultBuilder(args) .ConfigureLogging(logging => logging.AddFilter("System", LogLevel.Debug) .AddFilter<DebugLoggerProvider>("Microsoft", LogLevel.Information) .AddFilter<ConsoleLoggerProvider>("Microsoft", LogLevel.Trace)) .ConfigureServices((_, services) => services.AddAWSService<IAmazonKeyspaces>() .AddTransient<KeyspacesWrapper>() ) .Build(); logger = LoggerFactory.Create(builder => { builder.AddConsole(); }) .CreateLogger<HelloKeyspaces>(); var keyspacesClient = host.Services.GetRequiredService<IAmazonKeyspaces>(); var keyspacesWrapper = new KeyspacesWrapper(keyspacesClient); Console.WriteLine("Hello, Amazon Keyspaces! Let's list your keyspaces:"); await keyspacesWrapper.ListKeyspaces(); } }
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有关API详细信息,请参阅ListKeyspaces中的 Amazon SDK for .NET API参考。
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- Java
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- SDK适用于 Java 2.x
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注意
还有更多相关信息 GitHub。查找完整的示例,学习如何设置和运行 Amazon 代码示例存储库
。 import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.keyspaces.KeyspacesClient; import software.amazon.awssdk.services.keyspaces.model.KeyspaceSummary; import software.amazon.awssdk.services.keyspaces.model.KeyspacesException; import software.amazon.awssdk.services.keyspaces.model.ListKeyspacesRequest; import software.amazon.awssdk.services.keyspaces.model.ListKeyspacesResponse; import java.util.List; /** * Before running this Java (v2) code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class HelloKeyspaces { public static void main(String[] args) { Region region = Region.US_EAST_1; KeyspacesClient keyClient = KeyspacesClient.builder() .region(region) .build(); listKeyspaces(keyClient); } public static void listKeyspaces(KeyspacesClient keyClient) { try { ListKeyspacesRequest keyspacesRequest = ListKeyspacesRequest.builder() .maxResults(10) .build(); ListKeyspacesResponse response = keyClient.listKeyspaces(keyspacesRequest); List<KeyspaceSummary> keyspaces = response.keyspaces(); for (KeyspaceSummary keyspace : keyspaces) { System.out.println("The name of the keyspace is " + keyspace.keyspaceName()); } } catch (KeyspacesException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
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有关API详细信息,请参阅ListKeyspaces中的 Amazon SDK for Java 2.x API参考。
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- Kotlin
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- SDK对于 Kotlin 来说
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注意
还有更多相关信息 GitHub。查找完整的示例,学习如何设置和运行 Amazon 代码示例存储库
。 /** Before running this Kotlin code example, set up your development environment, including your credentials. For more information, see the following documentation topic: https://docs.aws.amazon.com/sdk-for-kotlin/latest/developer-guide/setup.html */ suspend fun main() { listKeyspaces() } suspend fun listKeyspaces() { val keyspacesRequest = ListKeyspacesRequest { maxResults = 10 } KeyspacesClient { region = "us-east-1" }.use { keyClient -> val response = keyClient.listKeyspaces(keyspacesRequest) response.keyspaces?.forEach { keyspace -> println("The name of the keyspace is ${keyspace.keyspaceName}") } } }
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有关API详细信息,请参阅ListKeyspaces
中的 Amazon SDK以供API参考 Kotlin。
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- Python
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- SDK适用于 Python (Boto3)
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注意
还有更多相关信息 GitHub。查找完整的示例,学习如何设置和运行 Amazon 代码示例存储库
。 import boto3 def hello_keyspaces(keyspaces_client): """ Use the AWS SDK for Python (Boto3) to create an Amazon Keyspaces (for Apache Cassandra) client and list the keyspaces in your account. This example uses the default settings specified in your shared credentials and config files. :param keyspaces_client: A Boto3 Amazon Keyspaces Client object. This object wraps the low-level Amazon Keyspaces service API. """ print("Hello, Amazon Keyspaces! Let's list some of your keyspaces:\n") for ks in keyspaces_client.list_keyspaces(maxResults=5).get("keyspaces", []): print(ks["keyspaceName"]) print(f"\t{ks['resourceArn']}") if __name__ == "__main__": hello_keyspaces(boto3.client("keyspaces"))
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有关API详细信息,请参阅ListKeyspaces中的 Amazon SDK供参考 Python (Boto3) API。
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代码示例
创建 Amazon CloudFormation 资源
基础知识